refactor(@xen-orchestra/backups): rename exportDeltaVm to exportIncrementalVm and importDeltaVM to importIncrementalVm

getAdaptersByRemote , RemoteTimeoutError and runTasks

.eslintrc.js

@@ -28,7 +28,7 @@ module.exports = {
       },
     },
     {
-      files: ['*.{spec,test}.{,c,m}js'],
+      files: ['*.{integ,spec,test}.{,c,m}js'],
       rules: {
         'n/no-unpublished-require': 'off',
         'n/no-unpublished-import': 'off',

@vates/diff/.USAGE.md

@@ -0,0 +1,32 @@
+```js
+import diff from '@vates/diff'
+
+diff('foo bar baz', 'Foo qux')
+// → [ 0, 'F', 4, 'qux', 7, '' ]
+//
+// Differences of the second string from the first one:
+// - at position 0, it contains `F`
+// - at position 4, it contains `qux`
+// - at position 7, it ends
+
+diff('Foo qux', 'foo bar baz')
+// → [ 0, 'f', 4, 'bar', 7, ' baz' ]
+//
+// Differences of the second string from the first one:
+// - at position 0, it contains f`
+// - at position 4, it contains `bar`
+// - at position 7, it contains `baz`
+
+// works with all collections that supports
+// - `.length`
+// - `collection[index]`
+// - `.slice(start, end)`
+//
+// which includes:
+// - arrays
+// - strings
+// - `Buffer`
+// - `TypedArray`
+diff([0, 1, 2], [3, 4])
+// → [ 0, [ 3, 4 ], 2, [] ]
+```

@vates/diff/.npmignore

@@ -0,0 +1 @@
+../../scripts/npmignore

@vates/diff/README.md

@@ -0,0 +1,65 @@
+<!-- DO NOT EDIT MANUALLY, THIS FILE HAS BEEN GENERATED -->
+
+# @vates/diff
+
+[![Package Version](https://badgen.net/npm/v/@vates/diff)](https://npmjs.org/package/@vates/diff) ![License](https://badgen.net/npm/license/@vates/diff) [![PackagePhobia](https://badgen.net/bundlephobia/minzip/@vates/diff)](https://bundlephobia.com/result?p=@vates/diff) [![Node compatibility](https://badgen.net/npm/node/@vates/diff)](https://npmjs.org/package/@vates/diff)
+
+> Computes differences between two arrays, buffers or strings
+
+## Install
+
+Installation of the [npm package](https://npmjs.org/package/@vates/diff):
+
+```sh
+npm install --save @vates/diff
+```
+
+## Usage
+
+```js
+import diff from '@vates/diff'
+
+diff('foo bar baz', 'Foo qux')
+// → [ 0, 'F', 4, 'qux', 7, '' ]
+//
+// Differences of the second string from the first one:
+// - at position 0, it contains `F`
+// - at position 4, it contains `qux`
+// - at position 7, it ends
+
+diff('Foo qux', 'foo bar baz')
+// → [ 0, 'f', 4, 'bar', 7, ' baz' ]
+//
+// Differences of the second string from the first one:
+// - at position 0, it contains f`
+// - at position 4, it contains `bar`
+// - at position 7, it contains `baz`
+
+// works with all collections that supports
+// - `.length`
+// - `collection[index]`
+// - `.slice(start, end)`
+//
+// which includes:
+// - arrays
+// - strings
+// - `Buffer`
+// - `TypedArray`
+diff([0, 1, 2], [3, 4])
+// → [ 0, [ 3, 4 ], 2, [] ]
+```
+
+## Contributions
+
+Contributions are _very_ welcomed, either on the documentation or on
+the code.
+
+You may:
+
+- report any [issue](https://github.com/vatesfr/xen-orchestra/issues)
+  you've encountered;
+- fork and create a pull request.
+
+## License
+
+[ISC](https://spdx.org/licenses/ISC) © [Vates SAS](https://vates.fr)

@vates/diff/index.js

@@ -0,0 +1,37 @@
+'use strict'
+
+/**
+ * Compare two data arrays, buffers or strings and invoke the provided callback function for each difference.
+ *
+ * @template {Array|Buffer|string} T
+ * @param {Array|Buffer|string} data1 - The first data array or buffer to compare.
+ * @param {T} data2 - The second data array or buffer to compare.
+ * @param {(index: number, diff: T) => void} [cb] - The callback function to invoke for each difference. If not provided, an array of differences will be returned.
+ * @returns {Array<number|T>|undefined} - An array of differences if no callback is provided, otherwise undefined.
+ */
+module.exports = function diff(data1, data2, cb) {
+  let result
+  if (cb === undefined) {
+    result = []
+    cb = result.push.bind(result)
+  }
+
+  const n1 = data1.length
+  const n2 = data2.length
+  const n = Math.min(n1, n2)
+  for (let i = 0; i < n; ++i) {
+    if (data1[i] !== data2[i]) {
+      let j = i + 1
+      while (j < n && data1[j] !== data2[j]) {
+        ++j
+      }
+      cb(i, data2.slice(i, j))
+      i = j
+    }
+  }
+  if (n1 !== n2) {
+    cb(n, n1 < n2 ? data2.slice(n) : data2.slice(0, 0))
+  }
+
+  return result
+}

@vates/diff/index.test.js

@@ -0,0 +1,51 @@
+'use strict'
+
+const assert = require('node:assert/strict')
+const test = require('test')
+
+const diff = require('./index.js')
+
+test('data of equal length', function () {
+  const data1 = 'foo bar baz'
+  const data2 = 'baz bar foo'
+  assert.deepEqual(diff(data1, data2), [0, 'baz', 8, 'foo'])
+})
+
+test('data1 is longer', function () {
+  const data1 = 'foo bar'
+  const data2 = 'foo'
+  assert.deepEqual(diff(data1, data2), [3, ''])
+})
+
+test('data2 is longer', function () {
+  const data1 = 'foo'
+  const data2 = 'foo bar'
+  assert.deepEqual(diff(data1, data2), [3, ' bar'])
+})
+
+test('with arrays', function () {
+  const data1 = 'foo bar baz'.split('')
+  const data2 = 'baz bar foo'.split('')
+  assert.deepEqual(diff(data1, data2), [0, 'baz'.split(''), 8, 'foo'.split('')])
+})
+
+test('with buffers', function () {
+  const data1 = Buffer.from('foo bar baz')
+  const data2 = Buffer.from('baz bar foo')
+  assert.deepEqual(diff(data1, data2), [0, Buffer.from('baz'), 8, Buffer.from('foo')])
+})
+
+test('cb param', function () {
+  const data1 = 'foo bar baz'
+  const data2 = 'baz bar foo'
+
+  const calls = []
+  const cb = (...args) => calls.push(args)
+
+  diff(data1, data2, cb)
+
+  assert.deepEqual(calls, [
+    [0, 'baz'],
+    [8, 'foo'],
+  ])
+})

@vates/diff/package.json

@@ -0,0 +1,36 @@
+{
+  "private": false,
+  "name": "@vates/diff",
+  "description": "Computes differences between two arrays, buffers or strings",
+  "keywords": [
+    "array",
+    "binary",
+    "buffer",
+    "diff",
+    "differences",
+    "string"
+  ],
+  "homepage": "https://github.com/vatesfr/xen-orchestra/tree/master/@vates/diff",
+  "bugs": "https://github.com/vatesfr/xen-orchestra/issues",
+  "repository": {
+    "directory": "@vates/diff",
+    "type": "git",
+    "url": "https://github.com/vatesfr/xen-orchestra.git"
+  },
+  "author": {
+    "name": "Vates SAS",
+    "url": "https://vates.fr"
+  },
+  "license": "ISC",
+  "version": "0.1.0",
+  "engines": {
+    "node": ">=8.10"
+  },
+  "scripts": {
+    "postversion": "npm publish --access public",
+    "test": "node--test"
+  },
+  "devDependencies": {
+    "test": "^3.3.0"
+  }
+}

@vates/fuse-vhd/package.json

@@ -21,7 +21,7 @@
     "fuse-native": "^2.2.6",
     "lru-cache": "^7.14.0",
     "promise-toolbox": "^0.21.0",
-    "vhd-lib": "^4.2.1"
+    "vhd-lib": "^4.4.0"
   },
   "scripts": {
     "postversion": "npm publish --access public"

@vates/nbd-client/index.js

@@ -18,8 +18,11 @@ const {
   OPTS_MAGIC,
   NBD_CMD_DISC,
 } = require('./constants.js')
-const { fromCallback } = require('promise-toolbox')
+const { fromCallback, pRetry, pDelay, pTimeout } = require('promise-toolbox')
 const { readChunkStrict } = require('@vates/read-chunk')
+const { createLogger } = require('@xen-orchestra/log')
+
+const { warn } = createLogger('vates:nbd-client')
 
 // documentation is here : https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md
 
@@ -32,18 +35,34 @@ module.exports = class NbdClient {
   #exportName
   #exportSize
 
+  #waitBeforeReconnect
+  #readAhead
+  #readBlockRetries
+  #reconnectRetry
+  #connectTimeout
+
   // AFAIK, there is no guaranty the server answers in the same order as the queries
   // so we handle a backlog of command waiting for response and handle concurrency manually
 
   #waitingForResponse // there is already a listenner waiting for a response
   #nextCommandQueryId = BigInt(0)
   #commandQueryBacklog // map of command waiting for an response queryId => { size/*in byte*/, resolve, reject}
+  #connected = false
 
-  constructor({ address, port = NBD_DEFAULT_PORT, exportname, cert }) {
+  #reconnectingPromise
+  constructor(
+    { address, port = NBD_DEFAULT_PORT, exportname, cert },
+    { connectTimeout = 6e4, waitBeforeReconnect = 1e3, readAhead = 10, readBlockRetries = 5, reconnectRetry = 5 } = {}
+  ) {
     this.#serverAddress = address
     this.#serverPort = port
     this.#exportName = exportname
     this.#serverCert = cert
+    this.#waitBeforeReconnect = waitBeforeReconnect
+    this.#readAhead = readAhead
+    this.#readBlockRetries = readBlockRetries
+    this.#reconnectRetry = reconnectRetry
+    this.#connectTimeout = connectTimeout
   }
 
   get exportSize() {
@@ -78,24 +97,55 @@ module.exports = class NbdClient {
     })
   }
 
-  async connect() {
-    // first we connect to the serve without tls, and then we upgrade the connection
+  async #connect() {
+    // first we connect to the server without tls, and then we upgrade the connection
     // to tls during the handshake
     await this.#unsecureConnect()
     await this.#handshake()
-
+    this.#connected = true
     // reset internal state if we reconnected a nbd client
     this.#commandQueryBacklog = new Map()
     this.#waitingForResponse = false
   }
+  async connect() {
+    return pTimeout.call(this.#connect(), this.#connectTimeout)
+  }
 
   async disconnect() {
+    if (!this.#connected) {
+      return
+    }
+
     const buffer = Buffer.alloc(28)
     buffer.writeInt32BE(NBD_REQUEST_MAGIC, 0) // it is a nbd request
     buffer.writeInt16BE(0, 4) // no command flags for a disconnect
     buffer.writeInt16BE(NBD_CMD_DISC, 6) // we want to disconnect from nbd server
     await this.#write(buffer)
     await this.#serverSocket.destroy()
+    this.#serverSocket = undefined
+    this.#connected = false
+  }
+
+  #clearReconnectPromise = () => {
+    this.#reconnectingPromise = undefined
+  }
+
+  async #reconnect() {
+    await this.disconnect().catch(() => {})
+    await pDelay(this.#waitBeforeReconnect) // need to let the xapi clean things on its side
+    await this.connect()
+  }
+
+  async reconnect() {
+    // we need to ensure reconnections do not occur in parallel
+    if (this.#reconnectingPromise === undefined) {
+      this.#reconnectingPromise = pRetry(() => this.#reconnect(), {
+        tries: this.#reconnectRetry,
+      })
+      this.#reconnectingPromise.then(this.#clearReconnectPromise, this.#clearReconnectPromise)
+    }
+
+    return this.#reconnectingPromise
   }
 
   // we can use individual read/write from the socket here since there is no concurrency
@@ -173,7 +223,6 @@ module.exports = class NbdClient {
     this.#commandQueryBacklog.forEach(({ reject }) => {
       reject(error)
     })
-    await this.disconnect()
   }
 
   async #readBlockResponse() {
@@ -181,7 +230,6 @@ module.exports = class NbdClient {
     if (this.#waitingForResponse) {
       return
     }
-
     try {
       this.#waitingForResponse = true
       const magic = await this.#readInt32()
@@ -206,7 +254,8 @@ module.exports = class NbdClient {
       query.resolve(data)
       this.#waitingForResponse = false
       if (this.#commandQueryBacklog.size > 0) {
-        await this.#readBlockResponse()
+        // it doesn't throw directly but will throw all relevant promise on failure
+        this.#readBlockResponse()
       }
     } catch (error) {
       // reject all the promises
@@ -217,6 +266,11 @@ module.exports = class NbdClient {
   }
 
   async readBlock(index, size = NBD_DEFAULT_BLOCK_SIZE) {
+    // we don't want to add anything in backlog while reconnecting
+    if (this.#reconnectingPromise) {
+      await this.#reconnectingPromise
+    }
+
     const queryId = this.#nextCommandQueryId
     this.#nextCommandQueryId++
 
@@ -231,19 +285,67 @@ module.exports = class NbdClient {
     buffer.writeInt32BE(size, 24)
 
     return new Promise((resolve, reject) => {
+      function decoratedReject(error) {
+        error.index = index
+        error.size = size
+        reject(error)
+      }
+
       // this will handle one block response, but it can be another block
       // since server does not guaranty to handle query in order
       this.#commandQueryBacklog.set(queryId, {
         size,
         resolve,
-        reject,
+        reject: decoratedReject,
       })
       // really send the command to the server
-      this.#write(buffer).catch(reject)
+      this.#write(buffer).catch(decoratedReject)
 
       // #readBlockResponse never throws directly
       // but if it fails it will reject all the promises in the backlog
       this.#readBlockResponse()
     })
   }
+
+  async *readBlocks(indexGenerator) {
+    // default : read all blocks
+    if (indexGenerator === undefined) {
+      const exportSize = this.#exportSize
+      const chunkSize = 2 * 1024 * 1024
+      indexGenerator = function* () {
+        const nbBlocks = Math.ceil(exportSize / chunkSize)
+        for (let index = 0; index < nbBlocks; index++) {
+          yield { index, size: chunkSize }
+        }
+      }
+    }
+    const readAhead = []
+    const readAheadMaxLength = this.#readAhead
+    const makeReadBlockPromise = (index, size) => {
+      const promise = pRetry(() => this.readBlock(index, size), {
+        tries: this.#readBlockRetries,
+        onRetry: async err => {
+          warn('will retry reading block ', index, err)
+          await this.reconnect()
+        },
+      })
+      // error is handled during unshift
+      promise.catch(() => {})
+      return promise
+    }
+
+    // read all blocks, but try to keep readAheadMaxLength promise waiting ahead
+    for (const { index, size } of indexGenerator()) {
+      // stack readAheadMaxLength promises before starting to handle the results
+      if (readAhead.length === readAheadMaxLength) {
+        // any error will stop reading blocks
+        yield readAhead.shift()
+      }
+
+      readAhead.push(makeReadBlockPromise(index, size))
+    }
+    while (readAhead.length > 0) {
+      yield readAhead.shift()
+    }
+  }
 }

@vates/nbd-client/package.json

@@ -13,16 +13,17 @@
     "url": "https://vates.fr"
   },
   "license": "ISC",
-  "version": "1.0.1",
+  "version": "1.2.0",
   "engines": {
     "node": ">=14.0"
   },
   "dependencies": {
     "@vates/async-each": "^1.0.0",
-    "@vates/read-chunk": "^1.0.1",
+    "@vates/read-chunk": "^1.1.1",
     "@xen-orchestra/async-map": "^0.1.2",
+    "@xen-orchestra/log": "^0.6.0",
     "promise-toolbox": "^0.21.0",
-    "xen-api": "^1.2.7"
+    "xen-api": "^1.3.1"
   },
   "devDependencies": {
     "tap": "^16.3.0",
@@ -30,6 +31,6 @@
   },
   "scripts": {
     "postversion": "npm publish --access public",
-    "test-integration": "tap *.spec.js"
+    "test-integration": "tap --lines 70 --functions 36 --branches 54 --statements 69 *.integ.js"
   }
 }

@vates/read-chunk/.USAGE.md

@@ -24,3 +24,25 @@ import { readChunkStrict } from '@vates/read-chunk'
 
 const chunk = await readChunkStrict(stream, 1024)
 ```
+
+### `skip(stream, size)`
+
+Skips a given number of bytes from a stream.
+
+Returns the number of bytes actually skipped, which may be less than the requested size if the stream has ended.
+
+```js
+import { skip } from '@vates/read-chunk'
+
+const bytesSkipped = await skip(stream, 2 * 1024 * 1024 * 1024)
+```
+
+### `skipStrict(stream, size)`
+
+Skips a given number of bytes from a stream and throws if the stream ended before enough stream has been skipped.
+
+```js
+import { skipStrict } from '@vates/read-chunk'
+
+await skipStrict(stream, 2 * 1024 * 1024 * 1024)
+```

@vates/read-chunk/README.md

@@ -43,6 +43,28 @@ import { readChunkStrict } from '@vates/read-chunk'
 const chunk = await readChunkStrict(stream, 1024)
 ```
 
+### `skip(stream, size)`
+
+Skips a given number of bytes from a stream.
+
+Returns the number of bytes actually skipped, which may be less than the requested size if the stream has ended.
+
+```js
+import { skip } from '@vates/read-chunk'
+
+const bytesSkipped = await skip(stream, 2 * 1024 * 1024 * 1024)
+```
+
+### `skipStrict(stream, size)`
+
+Skips a given number of bytes from a stream and throws if the stream ended before enough stream has been skipped.
+
+```js
+import { skipStrict } from '@vates/read-chunk'
+
+await skipStrict(stream, 2 * 1024 * 1024 * 1024)
+```
+
 ## Contributions
 
 Contributions are _very_ welcomed, either on the documentation or on

@vates/read-chunk/index.js

@@ -1,18 +1,36 @@
 'use strict'
 
+const assert = require('assert')
+
 /**
  * Read a chunk of data from a stream.
  *
+ * The returned promise is rejected if there is an error while reading the stream.
+ *
+ * For streams in object mode, the returned promise resolves to a single object read from the stream.
+ *
+ * For streams in binary mode, the returned promise resolves to a Buffer or a string if an encoding has been specified using the `stream.setEncoding()` method.
+ *
+ * If `size` bytes are not available to be read, `null` will be returned *unless* the stream has ended, in which case all of the data remaining will be returned.
+ *
  * @param {Readable} stream - A readable stream to read from.
- * @param {number} size - The number of bytes to read.
- * @returns {Promise<Buffer|null>} - A Promise that resolves to a Buffer of up to size bytes if available, or null if end of stream is reached. The Promise is rejected if there is an error while reading from the stream.
+ * @param {number} [size] - The number of bytes to read for binary streams (ignored for object streams).
+ * @returns {Promise<Buffer|string|unknown|null>} - A Promise that resolves to the read chunk if available, or null if end of stream is reached.
  */
 const readChunk = (stream, size) =>
-  stream.closed || stream.readableEnded
+  stream.errored != null
+    ? Promise.reject(stream.errored)
+    : stream.closed || stream.readableEnded
     ? Promise.resolve(null)
-    : size === 0
-    ? Promise.resolve(Buffer.alloc(0))
     : new Promise((resolve, reject) => {
+        if (size !== undefined) {
+          assert(size > 0)
+
+          // per Node documentation:
+          // > The size argument must be less than or equal to 1 GiB.
+          assert(size < 1073741824)
+        }
+
         function onEnd() {
           resolve(null)
           removeListeners()
@@ -43,9 +61,17 @@ exports.readChunk = readChunk
 /**
  * Read a chunk of data from a stream.
  *
+ * The returned promise is rejected if there is an error while reading the stream.
+ *
+ * For streams in object mode, the returned promise resolves to a single object read from the stream.
+ *
+ * For streams in binary mode, the returned promise resolves to a Buffer or a string if an encoding has been specified using the `stream.setEncoding()` method.
+ *
+ * If `size` bytes are not available to be read, the returned promise is rejected.
+ *
  * @param {Readable} stream - A readable stream to read from.
- * @param {number} size - The number of bytes to read.
- * @returns {Promise<Buffer>} - A Promise that resolves to a Buffer of size bytes. The Promise is rejected if there is an error while reading from the stream.
+ * @param {number} [size] - The number of bytes to read for binary streams (ignored for object streams).
+ * @returns {Promise<Buffer|string|unknown>} - A Promise that resolves to the read chunk.
  */
 exports.readChunkStrict = async function readChunkStrict(stream, size) {
   const chunk = await readChunk(stream, size)
@@ -54,7 +80,7 @@ exports.readChunkStrict = async function readChunkStrict(stream, size) {
   }
 
   if (size !== undefined && chunk.length !== size) {
-    const error = new Error('stream has ended with not enough data')
+    const error = new Error(`stream has ended with not enough data (actual: ${chunk.length}, expected: ${size})`)
     Object.defineProperties(error, {
       chunk: {
         value: chunk,
@@ -65,3 +91,69 @@ exports.readChunkStrict = async function readChunkStrict(stream, size) {
 
   return chunk
 }
+
+/**
+ * Skips a given number of bytes from a readable stream.
+ *
+ * @param {Readable} stream - A readable stream to skip bytes from.
+ * @param {number} size - The number of bytes to skip.
+ * @returns {Promise<number>} A Promise that resolves to the number of bytes actually skipped. If the end of the stream is reached before all bytes are skipped, the Promise resolves to the number of bytes that were skipped before the end of the stream was reached. The Promise is rejected if there is an error while reading from the stream.
+ */
+async function skip(stream, size) {
+  return stream.errored != null
+    ? Promise.reject(stream.errored)
+    : size === 0 || stream.closed || stream.readableEnded
+    ? Promise.resolve(0)
+    : new Promise((resolve, reject) => {
+        let left = size
+        function onEnd() {
+          resolve(size - left)
+          removeListeners()
+        }
+        function onError(error) {
+          reject(error)
+          removeListeners()
+        }
+        function onReadable() {
+          const data = stream.read()
+          left -= data === null ? 0 : data.length
+          if (left > 0) {
+            // continue to read
+          } else {
+            // if more than wanted has been read, push back the rest
+            if (left < 0) {
+              stream.unshift(data.slice(left))
+            }
+
+            resolve(size)
+            removeListeners()
+          }
+        }
+        function removeListeners() {
+          stream.removeListener('end', onEnd)
+          stream.removeListener('error', onError)
+          stream.removeListener('readable', onReadable)
+        }
+        stream.on('end', onEnd)
+        stream.on('error', onError)
+        stream.on('readable', onReadable)
+        onReadable()
+      })
+}
+exports.skip = skip
+
+/**
+ * Skips a given number of bytes from a stream.
+ *
+ * @param {Readable} stream - A readable stream to skip bytes from.
+ * @param {number} size - The number of bytes to skip.
+ * @returns {Promise<void>} - A Promise that resolves when the exact number of bytes have been skipped. The Promise is rejected if there is an error while reading from the stream or the stream ends before the exact number of bytes have been skipped.
+ */
+exports.skipStrict = async function skipStrict(stream, size) {
+  const bytesSkipped = await skip(stream, size)
+  if (bytesSkipped !== size) {
+    const error = new Error(`stream has ended with not enough data (actual: ${bytesSkipped}, expected: ${size})`)
+    error.bytesSkipped = bytesSkipped
+    throw error
+  }
+}

@vates/read-chunk/index.test.js

@@ -5,12 +5,58 @@ const assert = require('node:assert').strict
 
 const { Readable } = require('stream')
 
-const { readChunk, readChunkStrict } = require('./')
+const { readChunk, readChunkStrict, skip, skipStrict } = require('./')
 
 const makeStream = it => Readable.from(it, { objectMode: false })
 makeStream.obj = Readable.from
 
+const rejectionOf = promise =>
+  promise.then(
+    value => {
+      throw value
+    },
+    error => error
+  )
+
+const makeErrorTests = fn => {
+  it('rejects if the stream errors', async () => {
+    const error = new Error()
+    const stream = makeStream([])
+
+    const pError = rejectionOf(fn(stream, 10))
+    stream.destroy(error)
+
+    assert.strict(await pError, error)
+  })
+
+  // only supported for Node >= 18
+  if (process.versions.node.split('.')[0] >= 18) {
+    it('rejects if the stream has already errored', async () => {
+      const error = new Error()
+      const stream = makeStream([])
+
+      await new Promise(resolve => {
+        stream.once('error', resolve).destroy(error)
+      })
+
+      assert.strict(await rejectionOf(fn(stream, 10)), error)
+    })
+  }
+}
+
 describe('readChunk', () => {
+  it('rejects if size is less than or equal to 0', async () => {
+    const error = await rejectionOf(readChunk(makeStream([]), 0))
+    assert.strictEqual(error.code, 'ERR_ASSERTION')
+  })
+
+  it('rejects if size is greater than or equal to 1 GiB', async () => {
+    const error = await rejectionOf(readChunk(makeStream([]), 1024 * 1024 * 1024))
+    assert.strictEqual(error.code, 'ERR_ASSERTION')
+  })
+
+  makeErrorTests(readChunk)
+
   it('returns null if stream is empty', async () => {
     assert.strictEqual(await readChunk(makeStream([])), null)
   })
@@ -38,10 +84,6 @@ describe('readChunk', () => {
     it('returns less data if stream ends', async () => {
       assert.deepEqual(await readChunk(makeStream(['foo', 'bar']), 10), Buffer.from('foobar'))
     })
-
-    it('returns an empty buffer if the specified size is 0', async () => {
-      assert.deepEqual(await readChunk(makeStream(['foo', 'bar']), 0), Buffer.alloc(0))
-    })
   })
 
   describe('with object stream', () => {
@@ -52,14 +94,6 @@ describe('readChunk', () => {
   })
 })
 
-const rejectionOf = promise =>
-  promise.then(
-    value => {
-      throw value
-    },
-    error => error
-  )
-
 describe('readChunkStrict', function () {
   it('throws if stream is empty', async () => {
     const error = await rejectionOf(readChunkStrict(makeStream([])))
@@ -71,7 +105,43 @@ describe('readChunkStrict', function () {
   it('throws if stream ends with not enough data', async () => {
     const error = await rejectionOf(readChunkStrict(makeStream(['foo', 'bar']), 10))
     assert(error instanceof Error)
-    assert.strictEqual(error.message, 'stream has ended with not enough data')
+    assert.strictEqual(error.message, 'stream has ended with not enough data (actual: 6, expected: 10)')
     assert.deepEqual(error.chunk, Buffer.from('foobar'))
   })
 })
+
+describe('skip', function () {
+  makeErrorTests(skip)
+
+  it('returns 0 if size is 0', async () => {
+    assert.strictEqual(await skip(makeStream(['foo']), 0), 0)
+  })
+
+  it('returns 0 if the stream is already ended', async () => {
+    const stream = await makeStream([])
+    await readChunk(stream)
+
+    assert.strictEqual(await skip(stream, 10), 0)
+  })
+
+  it('skips a number of bytes', async () => {
+    const stream = makeStream('foo bar')
+
+    assert.strictEqual(await skip(stream, 4), 4)
+    assert.deepEqual(await readChunk(stream, 4), Buffer.from('bar'))
+  })
+
+  it('returns less size if stream ends', async () => {
+    assert.deepEqual(await skip(makeStream('foo bar'), 10), 7)
+  })
+})
+
+describe('skipStrict', function () {
+  it('throws if stream ends with not enough data', async () => {
+    const error = await rejectionOf(skipStrict(makeStream('foo bar'), 10))
+
+    assert(error instanceof Error)
+    assert.strictEqual(error.message, 'stream has ended with not enough data (actual: 7, expected: 10)')
+    assert.deepEqual(error.bytesSkipped, 7)
+  })
+})

@vates/read-chunk/package.json

@@ -19,7 +19,7 @@
     "type": "git",
     "url": "https://github.com/vatesfr/xen-orchestra.git"
   },
-  "version": "1.0.1",
+  "version": "1.1.1",
   "engines": {
     "node": ">=8.10"
   },

@vates/stream-reader/.USAGE.md

@@ -0,0 +1,42 @@
+```js
+import StreamReader from '@vates/stream-reader'
+
+const reader = new StreamReader(stream)
+```
+
+### `.read([size])`
+
+- returns the next available chunk of data
+- like `stream.read()`, a number of bytes can be specified
+- returns with less data than expected if stream has ended
+- returns `null` if the stream has ended and no data has been read
+
+```js
+const chunk = await reader.read(512)
+```
+
+### `.readStrict([size])`
+
+Similar behavior to `readChunk` but throws if the stream ended before the requested data could be read.
+
+```js
+const chunk = await reader.readStrict(512)
+```
+
+### `.skip(size)`
+
+Skips a given number of bytes from a stream.
+
+Returns the number of bytes actually skipped, which may be less than the requested size if the stream has ended.
+
+```js
+const bytesSkipped = await reader.skip(2 * 1024 * 1024 * 1024)
+```
+
+### `.skipStrict(size)`
+
+Skips a given number of bytes from a stream and throws if the stream ended before enough stream has been skipped.
+
+```js
+await reader.skipStrict(2 * 1024 * 1024 * 1024)
+```

@vates/stream-reader/.npmignore

@@ -0,0 +1 @@
+../../scripts/npmignore

@vates/stream-reader/README.md

@@ -0,0 +1,75 @@
+<!-- DO NOT EDIT MANUALLY, THIS FILE HAS BEEN GENERATED -->
+
+# @vates/stream-reader
+
+[![Package Version](https://badgen.net/npm/v/@vates/stream-reader)](https://npmjs.org/package/@vates/stream-reader) ![License](https://badgen.net/npm/license/@vates/stream-reader) [![PackagePhobia](https://badgen.net/bundlephobia/minzip/@vates/stream-reader)](https://bundlephobia.com/result?p=@vates/stream-reader) [![Node compatibility](https://badgen.net/npm/node/@vates/stream-reader)](https://npmjs.org/package/@vates/stream-reader)
+
+> Efficiently reads and skips chunks of a given size in a stream
+
+## Install
+
+Installation of the [npm package](https://npmjs.org/package/@vates/stream-reader):
+
+```sh
+npm install --save @vates/stream-reader
+```
+
+## Usage
+
+```js
+import StreamReader from '@vates/stream-reader'
+
+const reader = new StreamReader(stream)
+```
+
+### `.read([size])`
+
+- returns the next available chunk of data
+- like `stream.read()`, a number of bytes can be specified
+- returns with less data than expected if stream has ended
+- returns `null` if the stream has ended and no data has been read
+
+```js
+const chunk = await reader.read(512)
+```
+
+### `.readStrict([size])`
+
+Similar behavior to `readChunk` but throws if the stream ended before the requested data could be read.
+
+```js
+const chunk = await reader.readStrict(512)
+```
+
+### `.skip(size)`
+
+Skips a given number of bytes from a stream.
+
+Returns the number of bytes actually skipped, which may be less than the requested size if the stream has ended.
+
+```js
+const bytesSkipped = await reader.skip(2 * 1024 * 1024 * 1024)
+```
+
+### `.skipStrict(size)`
+
+Skips a given number of bytes from a stream and throws if the stream ended before enough stream has been skipped.
+
+```js
+await reader.skipStrict(2 * 1024 * 1024 * 1024)
+```
+
+## Contributions
+
+Contributions are _very_ welcomed, either on the documentation or on
+the code.
+
+You may:
+
+- report any [issue](https://github.com/vatesfr/xen-orchestra/issues)
+  you've encountered;
+- fork and create a pull request.
+
+## License
+
+[ISC](https://spdx.org/licenses/ISC) © [Vates SAS](https://vates.fr)

@vates/stream-reader/index.js

@@ -0,0 +1,123 @@
+'use strict'
+
+const assert = require('node:assert')
+const { finished, Readable } = require('node:stream')
+
+const noop = Function.prototype
+
+// Inspired by https://github.com/nodejs/node/blob/85705a47958c9ae5dbaa1f57456db19bdefdc494/lib/internal/streams/readable.js#L1107
+class StreamReader {
+  #ended = false
+  #error
+  #executor = resolve => {
+    this.#resolve = resolve
+  }
+  #stream
+  #resolve = noop
+
+  constructor(stream) {
+    stream = typeof stream.pipe === 'function' ? stream : Readable.from(stream)
+
+    this.#stream = stream
+
+    stream.on('readable', () => this.#resolve())
+
+    finished(stream, { writable: false }, error => {
+      this.#error = error
+      this.#ended = true
+      this.#resolve()
+    })
+  }
+
+  async read(size) {
+    if (size !== undefined) {
+      assert(size > 0)
+    }
+
+    do {
+      if (this.#ended) {
+        if (this.#error) {
+          throw this.#error
+        }
+        return null
+      }
+
+      const value = this.#stream.read(size)
+      if (value !== null) {
+        return value
+      }
+
+      await new Promise(this.#executor)
+    } while (true)
+  }
+
+  async readStrict(size) {
+    const chunk = await this.read(size)
+    if (chunk === null) {
+      throw new Error('stream has ended without data')
+    }
+
+    if (size !== undefined && chunk.length !== size) {
+      const error = new Error(`stream has ended with not enough data (actual: ${chunk.length}, expected: ${size})`)
+      Object.defineProperties(error, {
+        chunk: {
+          value: chunk,
+        },
+      })
+      throw error
+    }
+
+    return chunk
+  }
+
+  async skip(size) {
+    if (size === 0) {
+      return size
+    }
+
+    let toSkip = size
+    do {
+      if (this.#ended) {
+        if (this.#error) {
+          throw this.#error
+        }
+        return size - toSkip
+      }
+
+      const data = this.#stream.read()
+      if (data !== null) {
+        toSkip -= data === null ? 0 : data.length
+        if (toSkip > 0) {
+          // continue to read
+        } else {
+          // if more than wanted has been read, push back the rest
+          if (toSkip < 0) {
+            this.#stream.unshift(data.slice(toSkip))
+          }
+
+          return size
+        }
+      }
+
+      await new Promise(this.#executor)
+    } while (true)
+  }
+
+  async skipStrict(size) {
+    const bytesSkipped = await this.skip(size)
+    if (bytesSkipped !== size) {
+      const error = new Error(`stream has ended with not enough data (actual: ${bytesSkipped}, expected: ${size})`)
+      error.bytesSkipped = bytesSkipped
+      throw error
+    }
+  }
+}
+
+StreamReader.prototype[Symbol.asyncIterator] = async function* asyncIterator() {
+  let chunk
+  while ((chunk = await this.read()) !== null) {
+    yield chunk
+  }
+}
+
+module.exports = StreamReader

@vates/stream-reader/index.test.js

@@ -0,0 +1,141 @@
+'use strict'
+
+const { describe, it } = require('test')
+const assert = require('node:assert').strict
+
+const { Readable } = require('stream')
+
+const StreamReader = require('./index.js')
+
+const makeStream = it => Readable.from(it, { objectMode: false })
+makeStream.obj = Readable.from
+
+const rejectionOf = promise =>
+  promise.then(
+    value => {
+      throw value
+    },
+    error => error
+  )
+
+const makeErrorTests = method => {
+  it('rejects if the stream errors', async () => {
+    const error = new Error()
+    const stream = makeStream([])
+
+    const pError = rejectionOf(new StreamReader(stream)[method](10))
+    stream.destroy(error)
+
+    assert.strict(await pError, error)
+  })
+
+  it('rejects if the stream has already errored', async () => {
+    const error = new Error()
+    const stream = makeStream([])
+
+    await new Promise(resolve => {
+      stream.once('error', resolve).destroy(error)
+    })
+
+    assert.strict(await rejectionOf(new StreamReader(stream)[method](10)), error)
+  })
+}
+
+describe('read()', () => {
+  it('rejects if size is less than or equal to 0', async () => {
+    const error = await rejectionOf(new StreamReader(makeStream([])).read(0))
+    assert.strictEqual(error.code, 'ERR_ASSERTION')
+  })
+
+  it('returns null if stream is empty', async () => {
+    assert.strictEqual(await new StreamReader(makeStream([])).read(), null)
+  })
+
+  makeErrorTests('read')
+
+  it('returns null if the stream is already ended', async () => {
+    const reader = new StreamReader(makeStream([]))
+
+    await reader.read()
+
+    assert.strictEqual(await reader.read(), null)
+  })
+
+  describe('with binary stream', () => {
+    it('returns the first chunk of data', async () => {
+      assert.deepEqual(await new StreamReader(makeStream(['foo', 'bar'])).read(), Buffer.from('foo'))
+    })
+
+    it('returns a chunk of the specified size (smaller than first)', async () => {
+      assert.deepEqual(await new StreamReader(makeStream(['foo', 'bar'])).read(2), Buffer.from('fo'))
+    })
+
+    it('returns a chunk of the specified size (larger than first)', async () => {
+      assert.deepEqual(await new StreamReader(makeStream(['foo', 'bar'])).read(4), Buffer.from('foob'))
+    })
+
+    it('returns less data if stream ends', async () => {
+      assert.deepEqual(await new StreamReader(makeStream(['foo', 'bar'])).read(10), Buffer.from('foobar'))
+    })
+  })
+
+  describe('with object stream', () => {
+    it('returns the first chunk of data verbatim', async () => {
+      const chunks = [{}, {}]
+      assert.strictEqual(await new StreamReader(makeStream.obj(chunks)).read(), chunks[0])
+    })
+  })
+})
+
+describe('readStrict()', function () {
+  it('throws if stream is empty', async () => {
+    const error = await rejectionOf(new StreamReader(makeStream([])).readStrict())
+    assert(error instanceof Error)
+    assert.strictEqual(error.message, 'stream has ended without data')
+    assert.strictEqual(error.chunk, undefined)
+  })
+
+  it('throws if stream ends with not enough data', async () => {
+    const error = await rejectionOf(new StreamReader(makeStream(['foo', 'bar'])).readStrict(10))
+    assert(error instanceof Error)
+    assert.strictEqual(error.message, 'stream has ended with not enough data (actual: 6, expected: 10)')
+    assert.deepEqual(error.chunk, Buffer.from('foobar'))
+  })
+})
+
+describe('skip()', function () {
+  makeErrorTests('skip')
+
+  it('returns 0 if size is 0', async () => {
+    assert.strictEqual(await new StreamReader(makeStream(['foo'])).skip(0), 0)
+  })
+
+  it('returns 0 if the stream is already ended', async () => {
+    const reader = new StreamReader(makeStream([]))
+
+    await reader.read()
+
+    assert.strictEqual(await reader.skip(10), 0)
+  })
+
+  it('skips a number of bytes', async () => {
+    const reader = new StreamReader(makeStream('foo bar'))
+
+    assert.strictEqual(await reader.skip(4), 4)
+    assert.deepEqual(await reader.read(4), Buffer.from('bar'))
+  })
+
+  it('returns less size if stream ends', async () => {
+    assert.deepEqual(await new StreamReader(makeStream('foo bar')).skip(10), 7)
+  })
+})
+
+describe('skipStrict()', function () {
+  it('throws if stream ends with not enough data', async () => {
+    const error = await rejectionOf(new StreamReader(makeStream('foo bar')).skipStrict(10))
+
+    assert(error instanceof Error)
+    assert.strictEqual(error.message, 'stream has ended with not enough data (actual: 7, expected: 10)')
+    assert.deepEqual(error.bytesSkipped, 7)
+  })
+})

@vates/stream-reader/package.json

@@ -0,0 +1,39 @@
+{
+  "private": false,
+  "name": "@vates/stream-reader",
+  "description": "Efficiently reads and skips chunks of a given size in a stream",
+  "keywords": [
+    "async",
+    "chunk",
+    "data",
+    "node",
+    "promise",
+    "read",
+    "reader",
+    "skip",
+    "stream"
+  ],
+  "homepage": "https://github.com/vatesfr/xen-orchestra/tree/master/@vates/stream-reader",
+  "bugs": "https://github.com/vatesfr/xen-orchestra/issues",
+  "repository": {
+    "directory": "@vates/stream-reader",
+    "type": "git",
+    "url": "https://github.com/vatesfr/xen-orchestra.git"
+  },
+  "author": {
+    "name": "Vates SAS",
+    "url": "https://vates.fr"
+  },
+  "license": "ISC",
+  "version": "0.1.0",
+  "engines": {
+    "node": ">=10"
+  },
+  "scripts": {
+    "postversion": "npm publish --access public",
+    "test": "node--test"
+  },
+  "devDependencies": {
+    "test": "^3.3.0"
+  }
+}

@vates/task/.USAGE.md

@@ -2,7 +2,12 @@
 import { Task } from '@vates/task'
 
 const task = new Task({
-  name: 'my task',
+  // data in this object will be sent along the *start* event
+  //
+  // property names should be chosen as not to clash with properties used by `Task` or `combineEvents`
+  data: {
+    name: 'my task',
+  },
 
   // if defined, a new detached task is created
   //
@@ -25,8 +30,19 @@ const task = new Task({
 // this field is settable once before being observed
 task.id
 
+// contains the current status of the task
+//
+// possible statuses are:
+// - pending
+// - success
+// - failure
+// - aborted
 task.status
-await task.abort()
+
+// Triggers the abort signal associated to the task.
+//
+// This simply requests the task to abort, it will be up to the task to handle or not this signal.
+task.abort(reason)
 
 // if fn rejects, the task will be marked as failed
 const result = await task.runInside(fn)
@@ -34,7 +50,11 @@ const result = await task.runInside(fn)
 // if fn rejects, the task will be marked as failed
 // if fn resolves, the task will be marked as succeeded
 const result = await task.run(fn)
+```
 
+Inside a task:
+
+```js
 // the abort signal of the current task if any, otherwise is `undefined`
 Task.abortSignal
 
@@ -52,3 +72,43 @@ Task.warning(message, data)
 // - progress
 Task.set(property, value)
 ```
+
+### `combineEvents`
+
+Create a consolidated log from individual events.
+
+It can be used directly as an `onProgress` callback:
+
+```js
+import { makeOnProgress } from '@vates/task/combineEvents'
+
+const onProgress = makeOnProgress({
+  // This function is called each time a root task starts.
+  //
+  // It will be called for as many times as there are tasks created with this `onProgress` function.
+  onRootTaskStart(taskLog) {
+    // `taskLog` is an object reflecting the state of this task and all its subtasks,
+    // and will be mutated in real-time to reflect the changes of the task.
+  },
+
+  // This function is called each time a root task ends.
+  onRootTaskEnd(taskLog) {},
+
+  // This function is called each time a root task or a subtask is updated.
+  //
+  // `taskLog.$root` can be used to uncondionally access the root task.
+  onTaskUpdate(taskLog) {},
+})
+
+Task.run({ data: { name: 'my task' }, onProgress }, asyncFn)
+```
+
+It can also be fed event logs directly:
+
+```js
+import { makeOnProgress } from '@vates/task/combineEvents'
+
+const onProgress = makeOnProgress({ onRootTaskStart, onRootTaskEnd, onTaskUpdate })
+
+eventLogs.forEach(onProgress)
+```

@vates/task/README.md

@@ -18,7 +18,12 @@ npm install --save @vates/task
 import { Task } from '@vates/task'
 
 const task = new Task({
-  name: 'my task',
+  // data in this object will be sent along the *start* event
+  //
+  // property names should be chosen as not to clash with properties used by `Task` or `combineEvents`
+  data: {
+    name: 'my task',
+  },
 
   // if defined, a new detached task is created
   //
@@ -41,8 +46,19 @@ const task = new Task({
 // this field is settable once before being observed
 task.id
 
+// contains the current status of the task
+//
+// possible statuses are:
+// - pending
+// - success
+// - failure
+// - aborted
 task.status
-await task.abort()
+
+// Triggers the abort signal associated to the task.
+//
+// This simply requests the task to abort, it will be up to the task to handle or not this signal.
+task.abort(reason)
 
 // if fn rejects, the task will be marked as failed
 const result = await task.runInside(fn)
@@ -50,7 +66,11 @@ const result = await task.runInside(fn)
 // if fn rejects, the task will be marked as failed
 // if fn resolves, the task will be marked as succeeded
 const result = await task.run(fn)
+```
 
+Inside a task:
+
+```js
 // the abort signal of the current task if any, otherwise is `undefined`
 Task.abortSignal
 
@@ -69,6 +89,46 @@ Task.warning(message, data)
 Task.set(property, value)
 ```
 
+### `combineEvents`
+
+Create a consolidated log from individual events.
+
+It can be used directly as an `onProgress` callback:
+
+```js
+import { makeOnProgress } from '@vates/task/combineEvents'
+
+const onProgress = makeOnProgress({
+  // This function is called each time a root task starts.
+  //
+  // It will be called for as many times as there are tasks created with this `onProgress` function.
+  onRootTaskStart(taskLog) {
+    // `taskLog` is an object reflecting the state of this task and all its subtasks,
+    // and will be mutated in real-time to reflect the changes of the task.
+  },
+
+  // This function is called each time a root task ends.
+  onRootTaskEnd(taskLog) {},
+
+  // This function is called each time a root task or a subtask is updated.
+  //
+  // `taskLog.$root` can be used to uncondionally access the root task.
+  onTaskUpdate(taskLog) {},
+})
+
+Task.run({ data: { name: 'my task' }, onProgress }, asyncFn)
+```
+
+It can also be fed event logs directly:
+
+```js
+import { makeOnProgress } from '@vates/task/combineEvents'
+
+const onProgress = makeOnProgress({ onRootTaskStart, onRootTaskEnd, onTaskUpdate })
+
+eventLogs.forEach(onProgress)
+```
+
 ## Contributions
 
 Contributions are _very_ welcomed, either on the documentation or on

@vates/task/combineEvents.js

@@ -0,0 +1,77 @@
+'use strict'
+
+const assert = require('node:assert').strict
+
+const noop = Function.prototype
+
+function omit(source, keys, target = { __proto__: null }) {
+  for (const key of Object.keys(source)) {
+    if (!keys.has(key)) {
+      target[key] = source[key]
+    }
+  }
+  return target
+}
+
+const IGNORED_START_PROPS = new Set([
+  'end',
+  'infos',
+  'properties',
+  'result',
+  'status',
+  'tasks',
+  'timestamp',
+  'type',
+  'warnings',
+])
+
+exports.makeOnProgress = function ({ onRootTaskEnd = noop, onRootTaskStart = noop, onTaskUpdate = noop }) {
+  const taskLogs = new Map()
+  return function onProgress(event) {
+    const { id, type } = event
+    let taskLog
+    if (type === 'start') {
+      taskLog = omit(event, IGNORED_START_PROPS)
+      taskLog.start = event.timestamp
+      taskLog.status = 'pending'
+      taskLogs.set(id, taskLog)
+
+      const { parentId } = event
+      if (parentId === undefined) {
+        Object.defineProperty(taskLog, '$root', { value: taskLog })
+
+        // start of a root task
+        onRootTaskStart(taskLog)
+      } else {
+        // start of a subtask
+        const parent = taskLogs.get(parentId)
+        assert.notEqual(parent, undefined)
+
+        // inject a (non-enumerable) reference to the parent and the root task
+        Object.defineProperties(taskLog, { $parent: { value: parent }, $root: { value: parent.$root } })
+        ;(parent.tasks ?? (parent.tasks = [])).push(taskLog)
+      }
+    } else {
+      taskLog = taskLogs.get(id)
+      assert.notEqual(taskLog, undefined)
+
+      if (type === 'info' || type === 'warning') {
+        const key = type + 's'
+        const { data, message } = event
+        ;(taskLog[key] ?? (taskLog[key] = [])).push({ data, message })
+      } else if (type === 'property') {
+        ;(taskLog.properties ?? (taskLog.properties = { __proto__: null }))[event.name] = event.value
+      } else if (type === 'end') {
+        taskLog.end = event.timestamp
+        taskLog.result = event.result
+        taskLog.status = event.status
+      }
+
+      if (type === 'end' && taskLog.$root === taskLog) {
+        onRootTaskEnd(taskLog)
+      }
+    }
+
+    onTaskUpdate(taskLog)
+  }
+}

@vates/task/combineEvents.test.js

@@ -0,0 +1,67 @@
+'use strict'
+
+const assert = require('node:assert').strict
+const { describe, it } = require('test')
+
+const { makeOnProgress } = require('./combineEvents.js')
+const { Task } = require('./index.js')
+
+describe('makeOnProgress()', function () {
+  it('works', async function () {
+    const events = []
+    let log
+    const task = new Task({
+      data: { name: 'task' },
+      onProgress: makeOnProgress({
+        onRootTaskStart(log_) {
+          assert.equal(log, undefined)
+          log = log_
+          events.push('onRootTaskStart')
+        },
+        onRootTaskEnd(log_) {
+          assert.equal(log_, log)
+          events.push('onRootTaskEnd')
+        },
+
+        onTaskUpdate(log_) {
+          assert.equal(log_.$root, log)
+          events.push('onTaskUpdate')
+        },
+      }),
+    })
+
+    assert.equal(events.length, 0)
+
+    await task.run(async () => {
+      assert.equal(events[0], 'onRootTaskStart')
+      assert.equal(events[1], 'onTaskUpdate')
+      assert.equal(log.name, 'task')
+
+      Task.set('progress', 0)
+      assert.equal(events[2], 'onTaskUpdate')
+      assert.equal(log.properties.progress, 0)
+
+      Task.info('foo', {})
+      assert.equal(events[3], 'onTaskUpdate')
+      assert.deepEqual(log.infos, [{ data: {}, message: 'foo' }])
+
+      await Task.run({ data: { name: 'subtask' } }, () => {
+        assert.equal(events[4], 'onTaskUpdate')
+        assert.equal(log.tasks[0].name, 'subtask')
+
+        Task.warning('bar', {})
+        assert.equal(events[5], 'onTaskUpdate')
+        assert.deepEqual(log.tasks[0].warnings, [{ data: {}, message: 'bar' }])
+      })
+      assert.equal(events[6], 'onTaskUpdate')
+      assert.equal(log.tasks[0].status, 'success')
+
+      Task.set('progress', 100)
+      assert.equal(events[7], 'onTaskUpdate')
+      assert.equal(log.properties.progress, 100)
+    })
+    assert.equal(events[8], 'onRootTaskEnd')
+    assert.equal(events[9], 'onTaskUpdate')
+    assert.equal(log.status, 'success')
+  })
+})

@vates/task/index.js

@@ -11,13 +11,15 @@ function define(object, property, value) {
 const noop = Function.prototype
 
 const ABORTED = 'aborted'
-const ABORTING = 'aborting'
 const FAILURE = 'failure'
 const PENDING = 'pending'
 const SUCCESS = 'success'
-exports.STATUS = { ABORTED, ABORTING, FAILURE, PENDING, SUCCESS }
+exports.STATUS = { ABORTED, FAILURE, PENDING, SUCCESS }
+
+// stored in the global context so that various versions of the library can interact.
+const asyncStorageKey = '@vates/task@0'
+const asyncStorage = global[asyncStorageKey] ?? (global[asyncStorageKey] = new AsyncLocalStorage())
 
-const asyncStorage = new AsyncLocalStorage()
 const getTask = () => asyncStorage.getStore()
 
 exports.Task = class Task {
@@ -66,7 +68,6 @@ exports.Task = class Task {
 
   #abortController = new AbortController()
   #onProgress
-  #parent
 
   get id() {
     return (this.id = Math.random().toString(36).slice(2))
@@ -82,16 +83,14 @@ exports.Task = class Task {
     return this.#status
   }
 
-  constructor({ name, onProgress }) {
-    this.#startData = { name }
+  constructor({ data = {}, onProgress } = {}) {
+    this.#startData = data
 
     if (onProgress !== undefined) {
       this.#onProgress = onProgress
     } else {
       const parent = getTask()
       if (parent !== undefined) {
-        this.#parent = parent
-
         const { signal } = parent.#abortController
         signal.addEventListener('abort', () => {
           this.#abortController.abort(signal.reason)
@@ -106,8 +105,12 @@ exports.Task = class Task {
 
     const { signal } = this.#abortController
     signal.addEventListener('abort', () => {
-      if (this.status === PENDING) {
-        this.#status = this.#running ? ABORTING : ABORTED
+      if (this.status === PENDING && !this.#running) {
+        this.#maybeStart()
+
+        const status = ABORTED
+        this.#status = status
+        this.#emit('end', { result: signal.reason, status })
       }
     })
   }
@@ -123,14 +126,12 @@ exports.Task = class Task {
     this.#onProgress(data)
   }
 
-  #handleMaybeAbortion(result) {
-    if (this.status === ABORTING) {
-      this.#status = ABORTED
-      this.#emit('end', { status: ABORTED, result })
-      return true
+  #maybeStart() {
+    const startData = this.#startData
+    if (startData !== undefined) {
+      this.#startData = undefined
+      this.#emit('start', startData)
     }
-
-    return false;
   }
 
   async run(fn) {
@@ -148,22 +149,19 @@ exports.Task = class Task {
     assert.equal(this.#running, false)
     this.#running = true
 
-    const startData = this.#startData
-    if (startData !== undefined) {
-      this.#startData = undefined
-      this.#emit('start', startData)
-    }
+    this.#maybeStart()
 
     try {
       const result = await asyncStorage.run(this, fn)
-      this.#handleMaybeAbortion(result)
       this.#running = false
       return result
     } catch (result) {
-      if (!this.#handleMaybeAbortion(result)) {
-        this.#status = FAILURE
-        this.#emit('end', { status: FAILURE, result })
-      }
+      const { signal } = this.#abortController
+      const aborted = signal.aborted && result === signal.reason
+      const status = aborted ? ABORTED : FAILURE
+
+      this.#status = status
+      this.#emit('end', { status, result })
       throw result
     }
   }

@vates/task/index.test.js

@@ -0,0 +1,341 @@
+'use strict'
+
+const assert = require('node:assert').strict
+const { describe, it } = require('test')
+
+const { Task } = require('./index.js')
+
+const noop = Function.prototype
+
+function assertEvent(task, expected, eventIndex = -1) {
+  const logs = task.$events
+  const actual = logs[eventIndex < 0 ? logs.length + eventIndex : eventIndex]
+
+  assert.equal(typeof actual, 'object')
+  assert.equal(typeof actual.id, 'string')
+  assert.equal(typeof actual.timestamp, 'number')
+  for (const keys of Object.keys(expected)) {
+    assert.equal(actual[keys], expected[keys])
+  }
+}
+
+// like new Task() but with a custom onProgress which adds event to task.$events
+function createTask(opts) {
+  const events = []
+  const task = new Task({ ...opts, onProgress: events.push.bind(events) })
+  task.$events = events
+  return task
+}
+
+describe('Task', function () {
+  describe('contructor', function () {
+    it('data properties are passed to the start event', async function () {
+      const data = { foo: 0, bar: 1 }
+      const task = createTask({ data })
+      await task.run(noop)
+      assertEvent(task, { ...data, type: 'start' }, 0)
+    })
+  })
+
+  it('subtasks events are passed to root task', async function () {
+    const task = createTask()
+    const result = {}
+
+    await task.run(async () => {
+      await new Task().run(() => result)
+    })
+
+    assert.equal(task.$events.length, 4)
+    assertEvent(task, { type: 'start', parentId: task.id }, 1)
+    assertEvent(task, { type: 'end', status: 'success', result }, 2)
+  })
+
+  describe('.abortSignal', function () {
+    it('is undefined when run outside a task', function () {
+      assert.equal(Task.abortSignal, undefined)
+    })
+
+    it('is the current abort signal when run inside a task', async function () {
+      const task = createTask()
+      await task.run(() => {
+        const { abortSignal } = Task
+        assert.equal(abortSignal.aborted, false)
+        task.abort()
+        assert.equal(abortSignal.aborted, true)
+      })
+    })
+  })
+
+  describe('.abort()', function () {
+    it('aborts if the task throws fails with the abort reason', async function () {
+      const task = createTask()
+      const reason = {}
+
+      await task
+        .run(() => {
+          task.abort(reason)
+
+          Task.abortSignal.throwIfAborted()
+        })
+        .catch(noop)
+
+      assert.equal(task.status, 'aborted')
+
+      assert.equal(task.$events.length, 2)
+      assertEvent(task, { type: 'start' }, 0)
+      assertEvent(task, { type: 'end', status: 'aborted', result: reason }, 1)
+    })
+
+    it('does not abort if the task fails without the abort reason', async function () {
+      const task = createTask()
+      const result = new Error()
+
+      await task
+        .run(() => {
+          task.abort({})
+
+          throw result
+        })
+        .catch(noop)
+
+      assert.equal(task.status, 'failure')
+
+      assert.equal(task.$events.length, 2)
+      assertEvent(task, { type: 'start' }, 0)
+      assertEvent(task, { type: 'end', status: 'failure', result }, 1)
+    })
+
+    it('does not abort if the task succeed', async function () {
+      const task = createTask()
+      const result = {}
+
+      await task
+        .run(() => {
+          task.abort({})
+
+          return result
+        })
+        .catch(noop)
+
+      assert.equal(task.status, 'success')
+
+      assert.equal(task.$events.length, 2)
+      assertEvent(task, { type: 'start' }, 0)
+      assertEvent(task, { type: 'end', status: 'success', result }, 1)
+    })
+
+    it('aborts before task is running', function () {
+      const task = createTask()
+      const reason = {}
+
+      task.abort(reason)
+
+      assert.equal(task.status, 'aborted')
+
+      assert.equal(task.$events.length, 2)
+      assertEvent(task, { type: 'start' }, 0)
+      assertEvent(task, { type: 'end', status: 'aborted', result: reason }, 1)
+    })
+  })
+
+  describe('.info()', function () {
+    it('does nothing when run outside a task', function () {
+      Task.info('foo')
+    })
+
+    it('emits an info message when run inside a task', async function () {
+      const task = createTask()
+      await task.run(() => {
+        Task.info('foo')
+        assertEvent(task, {
+          data: undefined,
+          message: 'foo',
+          type: 'info',
+        })
+      })
+    })
+  })
+
+  describe('.set()', function () {
+    it('does nothing when run outside a task', function () {
+      Task.set('progress', 10)
+    })
+
+    it('emits an info message when run inside a task', async function () {
+      const task = createTask()
+      await task.run(() => {
+        Task.set('progress', 10)
+        assertEvent(task, {
+          name: 'progress',
+          type: 'property',
+          value: 10,
+        })
+      })
+    })
+  })
+
+  describe('.warning()', function () {
+    it('does nothing when run outside a task', function () {
+      Task.warning('foo')
+    })
+
+    it('emits an warning message when run inside a task', async function () {
+      const task = createTask()
+      await task.run(() => {
+        Task.warning('foo')
+        assertEvent(task, {
+          data: undefined,
+          message: 'foo',
+          type: 'warning',
+        })
+      })
+    })
+  })
+
+  describe('#id', function () {
+    it('can be set', function () {
+      const task = createTask()
+      task.id = 'foo'
+      assert.equal(task.id, 'foo')
+    })
+
+    it('cannot be set more than once', function () {
+      const task = createTask()
+      task.id = 'foo'
+
+      assert.throws(() => {
+        task.id = 'bar'
+      }, TypeError)
+    })
+
+    it('is randomly generated if not set', function () {
+      assert.notEqual(createTask().id, createTask().id)
+    })
+
+    it('cannot be set after being observed', function () {
+      const task = createTask()
+      noop(task.id)
+
+      assert.throws(() => {
+        task.id = 'bar'
+      }, TypeError)
+    })
+  })
+
+  describe('#status', function () {
+    it('starts as pending', function () {
+      assert.equal(createTask().status, 'pending')
+    })
+
+    it('changes to success when finish without error', async function () {
+      const task = createTask()
+      await task.run(noop)
+      assert.equal(task.status, 'success')
+    })
+
+    it('changes to failure when finish with error', async function () {
+      const task = createTask()
+      await task
+        .run(() => {
+          throw Error()
+        })
+        .catch(noop)
+      assert.equal(task.status, 'failure')
+    })
+
+    it('changes to aborted after run is complete', async function () {
+      const task = createTask()
+      await task
+        .run(() => {
+          task.abort()
+          assert.equal(task.status, 'pending')
+          Task.abortSignal.throwIfAborted()
+        })
+        .catch(noop)
+      assert.equal(task.status, 'aborted')
+    })
+
+    it('changes to aborted if aborted when not running', async function () {
+      const task = createTask()
+      task.abort()
+      assert.equal(task.status, 'aborted')
+    })
+  })
+
+  function makeRunTests(run) {
+    it('starts the task', async function () {
+      const task = createTask()
+      await run(task, () => {
+        assertEvent(task, { type: 'start' })
+      })
+    })
+
+    it('finishes the task on success', async function () {
+      const task = createTask()
+      await run(task, () => 'foo')
+      assert.equal(task.status, 'success')
+      assertEvent(task, {
+        status: 'success',
+        result: 'foo',
+        type: 'end',
+      })
+    })
+
+    it('fails the task on error', async function () {
+      const task = createTask()
+      const e = new Error()
+      await run(task, () => {
+        throw e
+      }).catch(noop)
+
+      assert.equal(task.status, 'failure')
+      assertEvent(task, {
+        status: 'failure',
+        result: e,
+        type: 'end',
+      })
+    })
+  }
+  describe('.run', function () {
+    makeRunTests((task, fn) => task.run(fn))
+  })
+  describe('.wrap', function () {
+    makeRunTests((task, fn) => task.wrap(fn)())
+  })
+
+  function makeRunInsideTests(run) {
+    it('starts the task', async function () {
+      const task = createTask()
+      await run(task, () => {
+        assertEvent(task, { type: 'start' })
+      })
+    })
+
+    it('does not finish the task on success', async function () {
+      const task = createTask()
+      await run(task, () => 'foo')
+      assert.equal(task.status, 'pending')
+    })
+
+    it('fails the task on error', async function () {
+      const task = createTask()
+      const e = new Error()
+      await run(task, () => {
+        throw e
+      }).catch(noop)
+
+      assert.equal(task.status, 'failure')
+      assertEvent(task, {
+        status: 'failure',
+        result: e,
+        type: 'end',
+      })
+    })
+  }
+  describe('.runInside', function () {
+    makeRunInsideTests((task, fn) => task.runInside(fn))
+  })
+  describe('.wrapInside', function () {
+    makeRunInsideTests((task, fn) => task.wrapInside(fn)())
+  })
+})

@vates/task/package.json

@@ -13,11 +13,19 @@
     "url": "https://vates.fr"
   },
   "license": "ISC",
-  "version": "0.0.1",
+  "version": "0.1.2",
   "engines": {
     "node": ">=14"
   },
+  "devDependencies": {
+    "test": "^3.3.0"
+  },
   "scripts": {
-    "postversion": "npm publish --access public"
+    "postversion": "npm publish --access public",
+    "test": "node--test"
+  },
+  "exports": {
+    ".": "./index.js",
+    "./combineEvents": "./combineEvents.js"
   }
 }

@xen-orchestra/backups-cli/package.json

@@ -7,8 +7,8 @@
   "bugs": "https://github.com/vatesfr/xen-orchestra/issues",
   "dependencies": {
     "@xen-orchestra/async-map": "^0.1.2",
-    "@xen-orchestra/backups": "^0.32.0",
-    "@xen-orchestra/fs": "^3.3.2",
+    "@xen-orchestra/backups": "^0.36.1",
+    "@xen-orchestra/fs": "^3.3.4",
     "filenamify": "^4.1.0",
     "getopts": "^2.2.5",
     "lodash": "^4.17.15",
@@ -27,7 +27,7 @@
   "scripts": {
     "postversion": "npm publish --access public"
   },
-  "version": "1.0.2",
+  "version": "1.0.6",
   "license": "AGPL-3.0-or-later",
   "author": {
     "name": "Vates SAS",

@xen-orchestra/backups/Backup.js

@@ -1,295 +0,0 @@
-'use strict'
-
-const { asyncMap, asyncMapSettled } = require('@xen-orchestra/async-map')
-const Disposable = require('promise-toolbox/Disposable')
-const ignoreErrors = require('promise-toolbox/ignoreErrors')
-const pTimeout = require('promise-toolbox/timeout')
-const { compileTemplate } = require('@xen-orchestra/template')
-const { limitConcurrency } = require('limit-concurrency-decorator')
-
-const { extractIdsFromSimplePattern } = require('./extractIdsFromSimplePattern.js')
-const { PoolMetadataBackup } = require('./_PoolMetadataBackup.js')
-const { Task } = require('./Task.js')
-const { VmBackup } = require('./_VmBackup.js')
-const { XoMetadataBackup } = require('./_XoMetadataBackup.js')
-const createStreamThrottle = require('./_createStreamThrottle.js')
-
-const noop = Function.prototype
-
-const getAdaptersByRemote = adapters => {
-  const adaptersByRemote = {}
-  adapters.forEach(({ adapter, remoteId }) => {
-    adaptersByRemote[remoteId] = adapter
-  })
-  return adaptersByRemote
-}
-
-const runTask = (...args) => Task.run(...args).catch(noop) // errors are handled by logs
-
-const DEFAULT_SETTINGS = {
-  getRemoteTimeout: 300e3,
-  reportWhen: 'failure',
-}
-
-const DEFAULT_VM_SETTINGS = {
-  bypassVdiChainsCheck: false,
-  checkpointSnapshot: false,
-  concurrency: 2,
-  copyRetention: 0,
-  deleteFirst: false,
-  exportRetention: 0,
-  fullInterval: 0,
-  healthCheckSr: undefined,
-  healthCheckVmsWithTags: [],
-  maxExportRate: 0,
-  maxMergedDeltasPerRun: Infinity,
-  offlineBackup: false,
-  offlineSnapshot: false,
-  snapshotRetention: 0,
-  timeout: 0,
-  useNbd: false,
-  unconditionalSnapshot: false,
-  vmTimeout: 0,
-}
-
-const DEFAULT_METADATA_SETTINGS = {
-  retentionPoolMetadata: 0,
-  retentionXoMetadata: 0,
-}
-
-class RemoteTimeoutError extends Error {
-  constructor(remoteId) {
-    super('timeout while getting the remote ' + remoteId)
-    this.remoteId = remoteId
-  }
-}
-
-exports.Backup = class Backup {
-  constructor({ config, getAdapter, getConnectedRecord, job, schedule }) {
-    this._config = config
-    this._getRecord = getConnectedRecord
-    this._job = job
-    this._schedule = schedule
-
-    this._getSnapshotNameLabel = compileTemplate(config.snapshotNameLabelTpl, {
-      '{job.name}': job.name,
-      '{vm.name_label}': vm => vm.name_label,
-    })
-
-    const { type } = job
-    const baseSettings = { ...DEFAULT_SETTINGS }
-    if (type === 'backup') {
-      Object.assign(baseSettings, DEFAULT_VM_SETTINGS, config.defaultSettings, config.vm?.defaultSettings)
-      this.run = this._runVmBackup
-    } else if (type === 'metadataBackup') {
-      Object.assign(baseSettings, DEFAULT_METADATA_SETTINGS, config.defaultSettings, config.metadata?.defaultSettings)
-      this.run = this._runMetadataBackup
-    } else {
-      throw new Error(`No runner for the backup type ${type}`)
-    }
-    Object.assign(baseSettings, job.settings[''])
-
-    this._baseSettings = baseSettings
-    this._settings = { ...baseSettings, ...job.settings[schedule.id] }
-
-    const { getRemoteTimeout } = this._settings
-    this._getAdapter = async function (remoteId) {
-      try {
-        const disposable = await pTimeout.call(getAdapter(remoteId), getRemoteTimeout, new RemoteTimeoutError(remoteId))
-
-        return new Disposable(() => disposable.dispose(), {
-          adapter: disposable.value,
-          remoteId,
-        })
-      } catch (error) {
-        // See https://github.com/vatesfr/xen-orchestra/commit/6aa6cfba8ec939c0288f0fa740f6dfad98c43cbb
-        runTask(
-          {
-            name: 'get remote adapter',
-            data: { type: 'remote', id: remoteId },
-          },
-          () => Promise.reject(error)
-        )
-      }
-    }
-  }
-
-  async _runMetadataBackup() {
-    const schedule = this._schedule
-    const job = this._job
-    const remoteIds = extractIdsFromSimplePattern(job.remotes)
-    if (remoteIds.length === 0) {
-      throw new Error('metadata backup job cannot run without remotes')
-    }
-
-    const config = this._config
-    const poolIds = extractIdsFromSimplePattern(job.pools)
-    const isEmptyPools = poolIds.length === 0
-    const isXoMetadata = job.xoMetadata !== undefined
-    if (!isXoMetadata && isEmptyPools) {
-      throw new Error('no metadata mode found')
-    }
-
-    const settings = this._settings
-
-    const { retentionPoolMetadata, retentionXoMetadata } = settings
-
-    if (
-      (retentionPoolMetadata === 0 && retentionXoMetadata === 0) ||
-      (!isXoMetadata && retentionPoolMetadata === 0) ||
-      (isEmptyPools && retentionXoMetadata === 0)
-    ) {
-      throw new Error('no retentions corresponding to the metadata modes found')
-    }
-
-    await Disposable.use(
-      Disposable.all(
-        poolIds.map(id =>
-          this._getRecord('pool', id).catch(error => {
-            // See https://github.com/vatesfr/xen-orchestra/commit/6aa6cfba8ec939c0288f0fa740f6dfad98c43cbb
-            runTask(
-              {
-                name: 'get pool record',
-                data: { type: 'pool', id },
-              },
-              () => Promise.reject(error)
-            )
-          })
-        )
-      ),
-      Disposable.all(remoteIds.map(id => this._getAdapter(id))),
-      async (pools, remoteAdapters) => {
-        // remove adapters that failed (already handled)
-        remoteAdapters = remoteAdapters.filter(_ => _ !== undefined)
-        if (remoteAdapters.length === 0) {
-          return
-        }
-        remoteAdapters = getAdaptersByRemote(remoteAdapters)
-
-        // remove pools that failed (already handled)
-        pools = pools.filter(_ => _ !== undefined)
-
-        const promises = []
-        if (pools.length !== 0 && settings.retentionPoolMetadata !== 0) {
-          promises.push(
-            asyncMap(pools, async pool =>
-              runTask(
-                {
-                  name: `Starting metadata backup for the pool (${pool.$id}). (${job.id})`,
-                  data: {
-                    id: pool.$id,
-                    pool,
-                    poolMaster: await ignoreErrors.call(pool.$xapi.getRecord('host', pool.master)),
-                    type: 'pool',
-                  },
-                },
-                () =>
-                  new PoolMetadataBackup({
-                    config,
-                    job,
-                    pool,
-                    remoteAdapters,
-                    schedule,
-                    settings,
-                  }).run()
-              )
-            )
-          )
-        }
-
-        if (job.xoMetadata !== undefined && settings.retentionXoMetadata !== 0) {
-          promises.push(
-            runTask(
-              {
-                name: `Starting XO metadata backup. (${job.id})`,
-                data: {
-                  type: 'xo',
-                },
-              },
-              () =>
-                new XoMetadataBackup({
-                  config,
-                  job,
-                  remoteAdapters,
-                  schedule,
-                  settings,
-                }).run()
-            )
-          )
-        }
-        await Promise.all(promises)
-      }
-    )
-  }
-
-  async _runVmBackup() {
-    const job = this._job
-
-    // FIXME: proper SimpleIdPattern handling
-    const getSnapshotNameLabel = this._getSnapshotNameLabel
-    const schedule = this._schedule
-    const settings = this._settings
-
-    const throttleStream = createStreamThrottle(settings.maxExportRate)
-
-    const config = this._config
-    await Disposable.use(
-      Disposable.all(
-        extractIdsFromSimplePattern(job.srs).map(id =>
-          this._getRecord('SR', id).catch(error => {
-            runTask(
-              {
-                name: 'get SR record',
-                data: { type: 'SR', id },
-              },
-              () => Promise.reject(error)
-            )
-          })
-        )
-      ),
-      Disposable.all(extractIdsFromSimplePattern(job.remotes).map(id => this._getAdapter(id))),
-      () => (settings.healthCheckSr !== undefined ? this._getRecord('SR', settings.healthCheckSr) : undefined),
-      async (srs, remoteAdapters, healthCheckSr) => {
-        // remove adapters that failed (already handled)
-        remoteAdapters = remoteAdapters.filter(_ => _ !== undefined)
-
-        // remove srs that failed (already handled)
-        srs = srs.filter(_ => _ !== undefined)
-
-        if (remoteAdapters.length === 0 && srs.length === 0 && settings.snapshotRetention === 0) {
-          return
-        }
-
-        const vmIds = extractIdsFromSimplePattern(job.vms)
-
-        Task.info('vms', { vms: vmIds })
-
-        remoteAdapters = getAdaptersByRemote(remoteAdapters)
-
-        const allSettings = this._job.settings
-        const baseSettings = this._baseSettings
-
-        const handleVm = vmUuid =>
-          runTask({ name: 'backup VM', data: { type: 'VM', id: vmUuid } }, () =>
-            Disposable.use(this._getRecord('VM', vmUuid), vm =>
-              new VmBackup({
-                baseSettings,
-                config,
-                getSnapshotNameLabel,
-                healthCheckSr,
-                job,
-                remoteAdapters,
-                schedule,
-                settings: { ...settings, ...allSettings[vm.uuid] },
-                srs,
-                throttleStream,
-                vm,
-              }).run()
-            )
-          )
-        const { concurrency } = settings
-        await asyncMapSettled(vmIds, concurrency === 0 ? handleVm : limitConcurrency(concurrency)(handleVm))
-      }
-    )
-  }
-}

@xen-orchestra/backups/HealthCheckVmBackup.js

@@ -3,12 +3,14 @@
 const { Task } = require('./Task')
 
 exports.HealthCheckVmBackup = class HealthCheckVmBackup {
-  #xapi
   #restoredVm
+  #timeout
+  #xapi
 
-  constructor({ restoredVm, xapi }) {
+  constructor({ restoredVm, timeout = 10 * 60 * 1000, xapi }) {
     this.#restoredVm = restoredVm
     this.#xapi = xapi
+    this.#timeout = timeout
   }
 
   async run() {
@@ -23,7 +25,12 @@ exports.HealthCheckVmBackup = class HealthCheckVmBackup {
 
         // remove vifs
         await Promise.all(restoredVm.$VIFs.map(vif => xapi.callAsync('VIF.destroy', vif.$ref)))
-
+        const waitForScript = restoredVm.tags.includes('xo-backup-health-check-xenstore')
+        if (waitForScript) {
+          await restoredVm.set_xenstore_data({
+            'vm-data/xo-backup-health-check': 'planned',
+          })
+        }
         const start = new Date()
         // start Vm
 
@@ -34,7 +41,7 @@ exports.HealthCheckVmBackup = class HealthCheckVmBackup {
           false // Skip pre-boot checks?
         )
         const started = new Date()
-        const timeout = 10 * 60 * 1000
+        const timeout = this.#timeout
         const startDuration = started - start
 
         let remainingTimeout = timeout - startDuration
@@ -52,12 +59,52 @@ exports.HealthCheckVmBackup = class HealthCheckVmBackup {
         remainingTimeout -= running - started
 
         if (remainingTimeout < 0) {
-          throw new Error(`local xapi  did not get Runnig state for VM ${restoredId} after ${timeout / 1000} second`)
+          throw new Error(`local xapi  did not get Running state for VM ${restoredId} after ${timeout / 1000} second`)
         }
         // wait for the guest tool version to be defined
         await xapi.waitObjectState(restoredVm.guest_metrics, gm => gm?.PV_drivers_version?.major !== undefined, {
           timeout: remainingTimeout,
         })
+
+        const guestToolsReady = new Date()
+        remainingTimeout -= guestToolsReady - running
+        if (remainingTimeout < 0) {
+          throw new Error(`local xapi  did not get he guest tools check ${restoredId} after ${timeout / 1000} second`)
+        }
+
+        if (waitForScript) {
+          const startedRestoredVm = await xapi.waitObjectState(
+            restoredVm.$ref,
+            vm =>
+              vm?.xenstore_data !== undefined &&
+              (vm.xenstore_data['vm-data/xo-backup-health-check'] === 'success' ||
+                vm.xenstore_data['vm-data/xo-backup-health-check'] === 'failure'),
+            {
+              timeout: remainingTimeout,
+            }
+          )
+          const scriptOk = new Date()
+          remainingTimeout -= scriptOk - guestToolsReady
+          if (remainingTimeout < 0) {
+            throw new Error(
+              `Backup health check script did not update vm-data/xo-backup-health-check of ${restoredId} after ${
+                timeout / 1000
+              } second, got ${
+                startedRestoredVm.xenstore_data['vm-data/xo-backup-health-check']
+              } instead of 'success' or 'failure'`
+            )
+          }
+
+          if (startedRestoredVm.xenstore_data['vm-data/xo-backup-health-check'] !== 'success') {
+            const message = startedRestoredVm.xenstore_data['vm-data/xo-backup-health-check-error']
+            if (message) {
+              throw new Error(`Backup health check script failed with message ${message} for VM ${restoredId} `)
+            } else {
+              throw new Error(`Backup health check script failed for VM ${restoredId} `)
+            }
+          }
+          Task.info('Backup health check script successfully executed')
+        }
       }
     )
   }

@xen-orchestra/backups/ImportVmBackup.js

@@ -3,7 +3,7 @@
 const assert = require('assert')
 
 const { formatFilenameDate } = require('./_filenameDate.js')
-const { importDeltaVm } = require('./_deltaVm.js')
+const { importIncrementalVm } = require('./_incrementalVm.js')
 const { Task } = require('./Task.js')
 const { watchStreamSize } = require('./_watchStreamSize.js')
 
@@ -49,7 +49,7 @@ exports.ImportVmBackup = class ImportVmBackup {
 
         const vmRef = isFull
           ? await xapi.VM_import(backup, srRef)
-          : await importDeltaVm(backup, await xapi.getRecord('SR', srRef), {
+          : await importIncrementalVm(backup, await xapi.getRecord('SR', srRef), {
               ...this._importDeltaVmSettings,
               detectBase: false,
             })

@xen-orchestra/backups/RemoteAdapter.js

@@ -10,14 +10,7 @@ const groupBy = require('lodash/groupBy.js')
 const pickBy = require('lodash/pickBy.js')
 const { dirname, join, normalize, resolve } = require('path')
 const { createLogger } = require('@xen-orchestra/log')
-const {
-  createVhdDirectoryFromStream,
-  createVhdStreamWithLength,
-  openVhd,
-  VhdAbstract,
-  VhdDirectory,
-  VhdSynthetic,
-} = require('vhd-lib')
+const { createVhdDirectoryFromStream, openVhd, VhdAbstract, VhdDirectory, VhdSynthetic } = require('vhd-lib')
 const { deduped } = require('@vates/disposable/deduped.js')
 const { decorateMethodsWith } = require('@vates/decorate-with')
 const { compose } = require('@vates/compose')
@@ -35,11 +28,10 @@ const { isMetadataFile } = require('./_backupType.js')
 const { isValidXva } = require('./_isValidXva.js')
 const { listPartitions, LVM_PARTITION_TYPE } = require('./_listPartitions.js')
 const { lvs, pvs } = require('./_lvm.js')
-const { watchStreamSize } = require('./_watchStreamSize')
+const { watchStreamSize } = require('./_watchStreamSize.js')
 // @todo : this import is marked extraneous , sould be fixed when lib is published
 const { mount } = require('@vates/fuse-vhd')
 const { asyncEach } = require('@vates/async-each')
-const { strictEqual } = require('assert')
 
 const DIR_XO_CONFIG_BACKUPS = 'xo-config-backups'
 exports.DIR_XO_CONFIG_BACKUPS = DIR_XO_CONFIG_BACKUPS
@@ -666,7 +658,7 @@ class RemoteAdapter {
     return path
   }
 
-  async writeVhd(path, input, { checksum = true, validator = noop, writeBlockConcurrency, nbdClient } = {}) {
+  async writeVhd(path, input, { checksum = true, validator = noop, writeBlockConcurrency } = {}) {
     const handler = this._handler
     if (this.useVhdDirectory()) {
       const dataPath = `${dirname(path)}/data/${uuidv4()}.vhd`
@@ -677,42 +669,21 @@ class RemoteAdapter {
           await input.task
           return validator.apply(this, arguments)
         },
-        nbdClient,
       })
       await VhdAbstract.createAlias(handler, path, dataPath)
       return size
     } else {
-      const inputWithSize = await createVhdStreamWithLength(input)
-      return this.outputStream(path, inputWithSize, { checksum, validator, expectedSize: inputWithSize.length })
+      return this.outputStream(path, input, { checksum, validator })
     }
   }
 
-  async outputStream(path, input, { checksum = true, validator = noop, expectedSize } = {}) {
+  async outputStream(path, input, { checksum = true, validator = noop } = {}) {
     const container = watchStreamSize(input)
-
     await this._handler.outputStream(path, input, {
       checksum,
       dirMode: this._dirMode,
       async validator() {
         await input.task
-        if (expectedSize !== undefined) {
-          // check that we read all the stream
-          strictEqual(
-            container.size,
-            expectedSize,
-            `transferred size ${container.size}, expected file size : ${expectedSize}`
-          )
-        }
-        let size
-        try {
-          size = await this._handler.getSize(path)
-        } catch (err) {
-          // can fail is the remote is encrypted
-        }
-        if (size !== undefined) {
-          // check that everything is written to disk
-          strictEqual(size, container.size, `written size ${size}, transfered size : ${container.size}`)
-        }
         return validator.apply(this, arguments)
       },
     })
@@ -748,7 +719,7 @@ class RemoteAdapter {
 
   async readDeltaVmBackup(metadata, ignoredVdis) {
     const handler = this._handler
-    const { vbds, vhds, vifs, vm } = metadata
+    const { vbds, vhds, vifs, vm, vmSnapshot } = metadata
     const dir = dirname(metadata._filename)
     const vdis = ignoredVdis === undefined ? metadata.vdis : pickBy(metadata.vdis, vdi => !ignoredVdis.has(vdi.uuid))
 
@@ -763,7 +734,7 @@ class RemoteAdapter {
       vdis,
       version: '1.0.0',
       vifs,
-      vm,
+      vm: { ...vm, suspend_VDI: vmSnapshot.suspend_VDI },
     }
   }
 
@@ -775,7 +746,49 @@ class RemoteAdapter {
     // _filename is a private field used to compute the backup id
     //
     // it's enumerable to make it cacheable
-    return { ...JSON.parse(await this._handler.readFile(path)), _filename: path }
+    const metadata = { ...JSON.parse(await this._handler.readFile(path)), _filename: path }
+
+    // backups created on XenServer < 7.1 via JSON in XML-RPC transports have boolean values encoded as integers, which make them unusable with more recent XAPIs
+    if (typeof metadata.vm.is_a_template === 'number') {
+      const properties = {
+        vbds: ['bootable', 'unpluggable', 'storage_lock', 'empty', 'currently_attached'],
+        vdis: [
+          'sharable',
+          'read_only',
+          'storage_lock',
+          'managed',
+          'missing',
+          'is_a_snapshot',
+          'allow_caching',
+          'metadata_latest',
+        ],
+        vifs: ['currently_attached', 'MAC_autogenerated'],
+        vm: ['is_a_template', 'is_control_domain', 'ha_always_run', 'is_a_snapshot', 'is_snapshot_from_vmpp'],
+        vmSnapshot: ['is_a_template', 'is_control_domain', 'ha_always_run', 'is_snapshot_from_vmpp'],
+      }
+
+      function fixBooleans(obj, properties) {
+        properties.forEach(property => {
+          if (typeof obj[property] === 'number') {
+            obj[property] = obj[property] === 1
+          }
+        })
+      }
+
+      for (const [key, propertiesInKey] of Object.entries(properties)) {
+        const value = metadata[key]
+        if (value !== undefined) {
+          // some properties of the metadata are collections indexed by the opaqueRef
+          const isCollection = Object.keys(value).some(subKey => subKey.startsWith('OpaqueRef:'))
+          if (isCollection) {
+            Object.values(value).forEach(subValue => fixBooleans(subValue, propertiesInKey))
+          } else {
+            fixBooleans(value, propertiesInKey)
+          }
+        }
+      }
+    }
+    return metadata
   }
 }
 

@xen-orchestra/backups/RestoreMetadataBackup.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const { DIR_XO_POOL_METADATA_BACKUPS } = require('./RemoteAdapter.js')
-const { PATH_DB_DUMP } = require('./_PoolMetadataBackup.js')
+const { PATH_DB_DUMP } = require('./_backupJob/PoolMetadataBackup.js')
 
 exports.RestoreMetadataBackup = class RestoreMetadataBackup {
   constructor({ backupId, handler, xapi }) {

@xen-orchestra/backups/_VmBackup.js

@@ -1,501 +0,0 @@
-'use strict'
-
-const assert = require('assert')
-const findLast = require('lodash/findLast.js')
-const groupBy = require('lodash/groupBy.js')
-const ignoreErrors = require('promise-toolbox/ignoreErrors')
-const keyBy = require('lodash/keyBy.js')
-const mapValues = require('lodash/mapValues.js')
-const { asyncMap } = require('@xen-orchestra/async-map')
-const { createLogger } = require('@xen-orchestra/log')
-const { decorateMethodsWith } = require('@vates/decorate-with')
-const { defer } = require('golike-defer')
-const { formatDateTime } = require('@xen-orchestra/xapi')
-
-const { DeltaBackupWriter } = require('./writers/DeltaBackupWriter.js')
-const { DeltaReplicationWriter } = require('./writers/DeltaReplicationWriter.js')
-const { exportDeltaVm } = require('./_deltaVm.js')
-const { forkStreamUnpipe } = require('./_forkStreamUnpipe.js')
-const { FullBackupWriter } = require('./writers/FullBackupWriter.js')
-const { FullReplicationWriter } = require('./writers/FullReplicationWriter.js')
-const { getOldEntries } = require('./_getOldEntries.js')
-const { Task } = require('./Task.js')
-const { watchStreamSize } = require('./_watchStreamSize.js')
-
-const { debug, warn } = createLogger('xo:backups:VmBackup')
-
-class AggregateError extends Error {
-  constructor(errors, message) {
-    super(message)
-    this.errors = errors
-  }
-}
-
-const asyncEach = async (iterable, fn, thisArg = iterable) => {
-  for (const item of iterable) {
-    await fn.call(thisArg, item)
-  }
-}
-
-const forkDeltaExport = deltaExport =>
-  Object.create(deltaExport, {
-    streams: {
-      value: mapValues(deltaExport.streams, forkStreamUnpipe),
-    },
-  })
-
-class VmBackup {
-  constructor({
-    config,
-    getSnapshotNameLabel,
-    healthCheckSr,
-    job,
-    remoteAdapters,
-    remotes,
-    schedule,
-    settings,
-    srs,
-    throttleStream,
-    vm,
-  }) {
-    if (vm.other_config['xo:backup:job'] === job.id && 'start' in vm.blocked_operations) {
-      // don't match replicated VMs created by this very job otherwise they
-      // will be replicated again and again
-      throw new Error('cannot backup a VM created by this very job')
-    }
-
-    this.config = config
-    this.job = job
-    this.remoteAdapters = remoteAdapters
-    this.scheduleId = schedule.id
-    this.timestamp = undefined
-
-    // VM currently backed up
-    this.vm = vm
-    const { tags } = this.vm
-
-    // VM (snapshot) that is really exported
-    this.exportedVm = undefined
-
-    this._fullVdisRequired = undefined
-    this._getSnapshotNameLabel = getSnapshotNameLabel
-    this._isDelta = job.mode === 'delta'
-    this._healthCheckSr = healthCheckSr
-    this._jobId = job.id
-    this._jobSnapshots = undefined
-    this._throttleStream = throttleStream
-    this._xapi = vm.$xapi
-
-    // Base VM for the export
-    this._baseVm = undefined
-
-    // Settings for this specific run (job, schedule, VM)
-    if (tags.includes('xo-memory-backup')) {
-      settings.checkpointSnapshot = true
-    }
-    if (tags.includes('xo-offline-backup')) {
-      settings.offlineSnapshot = true
-    }
-    this._settings = settings
-
-    // Create writers
-    {
-      const writers = new Set()
-      this._writers = writers
-
-      const [BackupWriter, ReplicationWriter] = this._isDelta
-        ? [DeltaBackupWriter, DeltaReplicationWriter]
-        : [FullBackupWriter, FullReplicationWriter]
-
-      const allSettings = job.settings
-      Object.keys(remoteAdapters).forEach(remoteId => {
-        const targetSettings = {
-          ...settings,
-          ...allSettings[remoteId],
-        }
-        if (targetSettings.exportRetention !== 0) {
-          writers.add(new BackupWriter({ backup: this, remoteId, settings: targetSettings }))
-        }
-      })
-      srs.forEach(sr => {
-        const targetSettings = {
-          ...settings,
-          ...allSettings[sr.uuid],
-        }
-        if (targetSettings.copyRetention !== 0) {
-          writers.add(new ReplicationWriter({ backup: this, sr, settings: targetSettings }))
-        }
-      })
-    }
-  }
-
-  // calls fn for each function, warns of any errors, and throws only if there are no writers left
-  async _callWriters(fn, step, parallel = true) {
-    const writers = this._writers
-    const n = writers.size
-    if (n === 0) {
-      return
-    }
-
-    async function callWriter(writer) {
-      const { name } = writer.constructor
-      try {
-        debug('writer step starting', { step, writer: name })
-        await fn(writer)
-        debug('writer step succeeded', { duration: step, writer: name })
-      } catch (error) {
-        writers.delete(writer)
-
-        warn('writer step failed', { error, step, writer: name })
-
-        // these two steps are the only one that are not already in their own sub tasks
-        if (step === 'writer.checkBaseVdis()' || step === 'writer.beforeBackup()') {
-          Task.warning(
-            `the writer ${name} has failed the step ${step} with error ${error.message}. It won't be used anymore in this job execution.`
-          )
-        }
-
-        throw error
-      }
-    }
-    if (n === 1) {
-      const [writer] = writers
-      return callWriter(writer)
-    }
-
-    const errors = []
-    await (parallel ? asyncMap : asyncEach)(writers, async function (writer) {
-      try {
-        await callWriter(writer)
-      } catch (error) {
-        errors.push(error)
-      }
-    })
-    if (writers.size === 0) {
-      throw new AggregateError(errors, 'all targets have failed, step: ' + step)
-    }
-  }
-
-  // ensure the VM itself does not have any backup metadata which would be
-  // copied on manual snapshots and interfere with the backup jobs
-  async _cleanMetadata() {
-    const { vm } = this
-    if ('xo:backup:job' in vm.other_config) {
-      await vm.update_other_config({
-        'xo:backup:datetime': null,
-        'xo:backup:deltaChainLength': null,
-        'xo:backup:exported': null,
-        'xo:backup:job': null,
-        'xo:backup:schedule': null,
-        'xo:backup:vm': null,
-      })
-    }
-  }
-
-  async _snapshot() {
-    const { vm } = this
-    const xapi = this._xapi
-
-    const settings = this._settings
-
-    const doSnapshot =
-      settings.unconditionalSnapshot ||
-      this._isDelta ||
-      (!settings.offlineBackup && vm.power_state === 'Running') ||
-      settings.snapshotRetention !== 0
-    if (doSnapshot) {
-      await Task.run({ name: 'snapshot' }, async () => {
-        if (!settings.bypassVdiChainsCheck) {
-          await vm.$assertHealthyVdiChains()
-        }
-
-        const snapshotRef = await vm[settings.checkpointSnapshot ? '$checkpoint' : '$snapshot']({
-          ignoreNobakVdis: true,
-          name_label: this._getSnapshotNameLabel(vm),
-          unplugVusbs: true,
-        })
-        this.timestamp = Date.now()
-
-        await xapi.setFieldEntries('VM', snapshotRef, 'other_config', {
-          'xo:backup:datetime': formatDateTime(this.timestamp),
-          'xo:backup:job': this._jobId,
-          'xo:backup:schedule': this.scheduleId,
-          'xo:backup:vm': vm.uuid,
-        })
-
-        this.exportedVm = await xapi.getRecord('VM', snapshotRef)
-
-        return this.exportedVm.uuid
-      })
-    } else {
-      this.exportedVm = vm
-      this.timestamp = Date.now()
-    }
-  }
-
-  async _copyDelta() {
-    const { exportedVm } = this
-    const baseVm = this._baseVm
-    const fullVdisRequired = this._fullVdisRequired
-
-    const isFull = fullVdisRequired === undefined || fullVdisRequired.size !== 0
-
-    await this._callWriters(writer => writer.prepare({ isFull }), 'writer.prepare()')
-
-    const deltaExport = await exportDeltaVm(exportedVm, baseVm, {
-      fullVdisRequired,
-    })
-    const sizeContainers = mapValues(deltaExport.streams, stream => watchStreamSize(stream))
-    deltaExport.streams = mapValues(deltaExport.streams, this._throttleStream)
-
-    const timestamp = Date.now()
-
-    await this._callWriters(
-      writer =>
-        writer.transfer({
-          deltaExport: forkDeltaExport(deltaExport),
-          sizeContainers,
-          timestamp,
-        }),
-      'writer.transfer()'
-    )
-
-    this._baseVm = exportedVm
-
-    if (baseVm !== undefined) {
-      await exportedVm.update_other_config(
-        'xo:backup:deltaChainLength',
-        String(+(baseVm.other_config['xo:backup:deltaChainLength'] ?? 0) + 1)
-      )
-    }
-
-    // not the case if offlineBackup
-    if (exportedVm.is_a_snapshot) {
-      await exportedVm.update_other_config('xo:backup:exported', 'true')
-    }
-
-    const size = Object.values(sizeContainers).reduce((sum, { size }) => sum + size, 0)
-    const end = Date.now()
-    const duration = end - timestamp
-    debug('transfer complete', {
-      duration,
-      speed: duration !== 0 ? (size * 1e3) / 1024 / 1024 / duration : 0,
-      size,
-    })
-
-    await this._callWriters(writer => writer.cleanup(), 'writer.cleanup()')
-  }
-
-  async _copyFull() {
-    const { compression } = this.job
-    const stream = this._throttleStream(
-      await this._xapi.VM_export(this.exportedVm.$ref, {
-        compress: Boolean(compression) && (compression === 'native' ? 'gzip' : 'zstd'),
-        useSnapshot: false,
-      })
-    )
-    const sizeContainer = watchStreamSize(stream)
-
-    const timestamp = Date.now()
-
-    await this._callWriters(
-      writer =>
-        writer.run({
-          sizeContainer,
-          stream: forkStreamUnpipe(stream),
-          timestamp,
-        }),
-      'writer.run()'
-    )
-
-    const { size } = sizeContainer
-    const end = Date.now()
-    const duration = end - timestamp
-    debug('transfer complete', {
-      duration,
-      speed: duration !== 0 ? (size * 1e3) / 1024 / 1024 / duration : 0,
-      size,
-    })
-  }
-
-  async _fetchJobSnapshots() {
-    const jobId = this._jobId
-    const vmRef = this.vm.$ref
-    const xapi = this._xapi
-
-    const snapshotsRef = await xapi.getField('VM', vmRef, 'snapshots')
-    const snapshotsOtherConfig = await asyncMap(snapshotsRef, ref => xapi.getField('VM', ref, 'other_config'))
-
-    const snapshots = []
-    snapshotsOtherConfig.forEach((other_config, i) => {
-      if (other_config['xo:backup:job'] === jobId) {
-        snapshots.push({ other_config, $ref: snapshotsRef[i] })
-      }
-    })
-    snapshots.sort((a, b) => (a.other_config['xo:backup:datetime'] < b.other_config['xo:backup:datetime'] ? -1 : 1))
-    this._jobSnapshots = snapshots
-  }
-
-  async _removeUnusedSnapshots() {
-    const allSettings = this.job.settings
-    const baseSettings = this._baseSettings
-    const baseVmRef = this._baseVm?.$ref
-
-    const snapshotsPerSchedule = groupBy(this._jobSnapshots, _ => _.other_config['xo:backup:schedule'])
-    const xapi = this._xapi
-    await asyncMap(Object.entries(snapshotsPerSchedule), ([scheduleId, snapshots]) => {
-      const settings = {
-        ...baseSettings,
-        ...allSettings[scheduleId],
-        ...allSettings[this.vm.uuid],
-      }
-      return asyncMap(getOldEntries(settings.snapshotRetention, snapshots), ({ $ref }) => {
-        if ($ref !== baseVmRef) {
-          return xapi.VM_destroy($ref)
-        }
-      })
-    })
-  }
-
-  async _selectBaseVm() {
-    const xapi = this._xapi
-
-    let baseVm = findLast(this._jobSnapshots, _ => 'xo:backup:exported' in _.other_config)
-    if (baseVm === undefined) {
-      debug('no base VM found')
-      return
-    }
-
-    const fullInterval = this._settings.fullInterval
-    const deltaChainLength = +(baseVm.other_config['xo:backup:deltaChainLength'] ?? 0) + 1
-    if (!(fullInterval === 0 || fullInterval > deltaChainLength)) {
-      debug('not using base VM becaust fullInterval reached')
-      return
-    }
-
-    const srcVdis = keyBy(await xapi.getRecords('VDI', await this.vm.$getDisks()), '$ref')
-
-    // resolve full record
-    baseVm = await xapi.getRecord('VM', baseVm.$ref)
-
-    const baseUuidToSrcVdi = new Map()
-    await asyncMap(await baseVm.$getDisks(), async baseRef => {
-      const [baseUuid, snapshotOf] = await Promise.all([
-        xapi.getField('VDI', baseRef, 'uuid'),
-        xapi.getField('VDI', baseRef, 'snapshot_of'),
-      ])
-      const srcVdi = srcVdis[snapshotOf]
-      if (srcVdi !== undefined) {
-        baseUuidToSrcVdi.set(baseUuid, srcVdi)
-      } else {
-        debug('ignore snapshot VDI because no longer present on VM', {
-          vdi: baseUuid,
-        })
-      }
-    })
-
-    const presentBaseVdis = new Map(baseUuidToSrcVdi)
-    await this._callWriters(
-      writer => presentBaseVdis.size !== 0 && writer.checkBaseVdis(presentBaseVdis, baseVm),
-      'writer.checkBaseVdis()',
-      false
-    )
-
-    if (presentBaseVdis.size === 0) {
-      debug('no base VM found')
-      return
-    }
-
-    const fullVdisRequired = new Set()
-    baseUuidToSrcVdi.forEach((srcVdi, baseUuid) => {
-      if (presentBaseVdis.has(baseUuid)) {
-        debug('found base VDI', {
-          base: baseUuid,
-          vdi: srcVdi.uuid,
-        })
-      } else {
-        debug('missing base VDI', {
-          base: baseUuid,
-          vdi: srcVdi.uuid,
-        })
-        fullVdisRequired.add(srcVdi.uuid)
-      }
-    })
-
-    this._baseVm = baseVm
-    this._fullVdisRequired = fullVdisRequired
-  }
-
-  async _healthCheck() {
-    const settings = this._settings
-
-    if (this._healthCheckSr === undefined) {
-      return
-    }
-
-    // check if current VM has tags
-    const { tags } = this.vm
-    const intersect = settings.healthCheckVmsWithTags.some(t => tags.includes(t))
-
-    if (settings.healthCheckVmsWithTags.length !== 0 && !intersect) {
-      return
-    }
-
-    await this._callWriters(writer => writer.healthCheck(this._healthCheckSr), 'writer.healthCheck()')
-  }
-
-  async run($defer) {
-    const settings = this._settings
-    assert(
-      !settings.offlineBackup || settings.snapshotRetention === 0,
-      'offlineBackup is not compatible with snapshotRetention'
-    )
-
-    await this._callWriters(async writer => {
-      await writer.beforeBackup()
-      $defer(async () => {
-        await writer.afterBackup()
-      })
-    }, 'writer.beforeBackup()')
-
-    await this._fetchJobSnapshots()
-
-    if (this._isDelta) {
-      await this._selectBaseVm()
-    }
-
-    await this._cleanMetadata()
-    await this._removeUnusedSnapshots()
-
-    const { vm } = this
-    const isRunning = vm.power_state === 'Running'
-    const startAfter = isRunning && (settings.offlineBackup ? 'backup' : settings.offlineSnapshot && 'snapshot')
-    if (startAfter) {
-      await vm.$callAsync('clean_shutdown')
-    }
-
-    try {
-      await this._snapshot()
-      if (startAfter === 'snapshot') {
-        ignoreErrors.call(vm.$callAsync('start', false, false))
-      }
-
-      if (this._writers.size !== 0) {
-        await (this._isDelta ? this._copyDelta() : this._copyFull())
-      }
-    } finally {
-      if (startAfter) {
-        ignoreErrors.call(vm.$callAsync('start', false, false))
-      }
-
-      await this._fetchJobSnapshots()
-      await this._removeUnusedSnapshots()
-    }
-    await this._healthCheck()
-  }
-}
-exports.VmBackup = VmBackup
-
-decorateMethodsWith(VmBackup, {
-  run: defer,
-})

@xen-orchestra/backups/_backupJob/AbstractBackupJob.js

@@ -0,0 +1,51 @@
+'use strict'
+
+const Disposable = require('promise-toolbox/Disposable')
+const pTimeout = require('promise-toolbox/timeout')
+const { compileTemplate } = require('@xen-orchestra/template')
+const { runTask } = require('./runTask.js')
+const { RemoteTimeoutError } = require('./RemoteTimeoutError.js')
+
+exports.DEFAULT_SETTINGS = {
+  getRemoteTimeout: 300e3,
+  reportWhen: 'failure',
+}
+
+exports.AbstractBackupJob = class AbstractBackupJob {
+  constructor({ config, getAdapter, getConnectedRecord, job, schedule }) {
+    this._config = config
+    this._getRecord = getConnectedRecord
+    this._job = job
+    this._schedule = schedule
+
+    this._getSnapshotNameLabel = compileTemplate(config.snapshotNameLabelTpl, {
+      '{job.name}': job.name,
+      '{vm.name_label}': vm => vm.name_label,
+    })
+
+    const baseSettings = this._computeBaseSettings(config, job)
+    this._baseSettings = baseSettings
+    this._settings = { ...baseSettings, ...job.settings[schedule.id] }
+
+    const { getRemoteTimeout } = this._settings
+    this._getAdapter = async function (remoteId) {
+      try {
+        const disposable = await pTimeout.call(getAdapter(remoteId), getRemoteTimeout, new RemoteTimeoutError(remoteId))
+
+        return new Disposable(() => disposable.dispose(), {
+          adapter: disposable.value,
+          remoteId,
+        })
+      } catch (error) {
+        // See https://github.com/vatesfr/xen-orchestra/commit/6aa6cfba8ec939c0288f0fa740f6dfad98c43cbb
+        runTask(
+          {
+            name: 'get remote adapter',
+            data: { type: 'remote', id: remoteId },
+          },
+          () => Promise.reject(error)
+        )
+      }
+    }
+  }
+}

@xen-orchestra/backups/_backupJob/MetadatasBackupJob.js

@@ -0,0 +1,134 @@
+'use strict'
+
+const { asyncMap } = require('@xen-orchestra/async-map')
+const Disposable = require('promise-toolbox/Disposable')
+const ignoreErrors = require('promise-toolbox/ignoreErrors')
+
+const { extractIdsFromSimplePattern } = require('../extractIdsFromSimplePattern.js')
+const { PoolMetadataBackup } = require('./PoolMetadataBackup.js')
+const { XoMetadataBackup } = require('./XoMetadataBackup.js')
+const { DEFAULT_SETTINGS, AbstractBackupJob } = require('./AbstractBackupJob.js')
+const { runTask } = require('./runTask.js')
+const { getAdaptersByRemote } = require('./getAdaptersByRemote.js')
+
+const DEFAULT_METADATA_SETTINGS = {
+  retentionPoolMetadata: 0,
+  retentionXoMetadata: 0,
+}
+
+exports.MetadatasBackupJob = class MetadatasBackupJob extends AbstractBackupJob {
+  _computeBaseSettings(config, job) {
+    const baseSettings = { ...DEFAULT_SETTINGS }
+    Object.assign(baseSettings, DEFAULT_METADATA_SETTINGS, config.defaultSettings, config.metadata?.defaultSettings)
+    Object.assign(baseSettings, job.settings[''])
+    return baseSettings
+  }
+
+  async run() {
+    const schedule = this._schedule
+    const job = this._job
+    const remoteIds = extractIdsFromSimplePattern(job.remotes)
+    if (remoteIds.length === 0) {
+      throw new Error('metadata backup job cannot run without remotes')
+    }
+
+    const config = this._config
+    const poolIds = extractIdsFromSimplePattern(job.pools)
+    const isEmptyPools = poolIds.length === 0
+    const isXoMetadata = job.xoMetadata !== undefined
+    if (!isXoMetadata && isEmptyPools) {
+      throw new Error('no metadata mode found')
+    }
+
+    const settings = this._settings
+
+    const { retentionPoolMetadata, retentionXoMetadata } = settings
+
+    if (
+      (retentionPoolMetadata === 0 && retentionXoMetadata === 0) ||
+      (!isXoMetadata && retentionPoolMetadata === 0) ||
+      (isEmptyPools && retentionXoMetadata === 0)
+    ) {
+      throw new Error('no retentions corresponding to the metadata modes found')
+    }
+
+    await Disposable.use(
+      Disposable.all(
+        poolIds.map(id =>
+          this._getRecord('pool', id).catch(error => {
+            // See https://github.com/vatesfr/xen-orchestra/commit/6aa6cfba8ec939c0288f0fa740f6dfad98c43cbb
+            runTask(
+              {
+                name: 'get pool record',
+                data: { type: 'pool', id },
+              },
+              () => Promise.reject(error)
+            )
+          })
+        )
+      ),
+      Disposable.all(remoteIds.map(id => this._getAdapter(id))),
+      async (pools, remoteAdapters) => {
+        // remove adapters that failed (already handled)
+        remoteAdapters = remoteAdapters.filter(_ => _ !== undefined)
+        if (remoteAdapters.length === 0) {
+          return
+        }
+        remoteAdapters = getAdaptersByRemote(remoteAdapters)
+
+        // remove pools that failed (already handled)
+        pools = pools.filter(_ => _ !== undefined)
+
+        const promises = []
+        if (pools.length !== 0 && settings.retentionPoolMetadata !== 0) {
+          promises.push(
+            asyncMap(pools, async pool =>
+              runTask(
+                {
+                  name: `Starting metadata backup for the pool (${pool.$id}). (${job.id})`,
+                  data: {
+                    id: pool.$id,
+                    pool,
+                    poolMaster: await ignoreErrors.call(pool.$xapi.getRecord('host', pool.master)),
+                    type: 'pool',
+                  },
+                },
+                () =>
+                  new PoolMetadataBackup({
+                    config,
+                    job,
+                    pool,
+                    remoteAdapters,
+                    schedule,
+                    settings,
+                  }).run()
+              )
+            )
+          )
+        }
+
+        if (job.xoMetadata !== undefined && settings.retentionXoMetadata !== 0) {
+          promises.push(
+            runTask(
+              {
+                name: `Starting XO metadata backup. (${job.id})`,
+                data: {
+                  type: 'xo',
+                },
+              },
+              () =>
+                new XoMetadataBackup({
+                  config,
+                  job,
+                  remoteAdapters,
+                  schedule,
+                  settings,
+                }).run()
+            )
+          )
+        }
+        await Promise.all(promises)
+      }
+    )
+  }
+}

@xen-orchestra/backups/_backupJob/PoolMetadataBackup.js

@@ -2,10 +2,10 @@
 
 const { asyncMap } = require('@xen-orchestra/async-map')
 
-const { DIR_XO_POOL_METADATA_BACKUPS } = require('./RemoteAdapter.js')
-const { forkStreamUnpipe } = require('./_forkStreamUnpipe.js')
-const { formatFilenameDate } = require('./_filenameDate.js')
-const { Task } = require('./Task.js')
+const { DIR_XO_POOL_METADATA_BACKUPS } = require('../RemoteAdapter.js')
+const { forkStreamUnpipe } = require('./forkStreamUnpipe.js')
+const { formatFilenameDate } = require('../_filenameDate.js')
+const { Task } = require('../Task.js')
 
 const PATH_DB_DUMP = '/pool/xmldbdump'
 exports.PATH_DB_DUMP = PATH_DB_DUMP

@xen-orchestra/backups/_backupJob/RemoteTimeoutError.js

@@ -0,0 +1,8 @@
+'use strict'
+class RemoteTimeoutError extends Error {
+  constructor(remoteId) {
+    super('timeout while getting the remote ' + remoteId)
+    this.remoteId = remoteId
+  }
+}
+exports.RemoteTimeoutError = RemoteTimeoutError

@xen-orchestra/backups/_backupJob/VmBackup/AbstractVMBackup.js

@@ -0,0 +1,87 @@
+'use strict'
+
+const { asyncMap } = require('@xen-orchestra/async-map')
+const { createLogger } = require('@xen-orchestra/log')
+const { Task } = require('../../Task.js')
+
+const { debug, warn } = createLogger('xo:backups:AbstractVmBackup')
+
+class AggregateError extends Error {
+  constructor(errors, message) {
+    super(message)
+    this.errors = errors
+  }
+}
+
+const asyncEach = async (iterable, fn, thisArg = iterable) => {
+  for (const item of iterable) {
+    await fn.call(thisArg, item)
+  }
+}
+
+exports.AbstractVmBackup = class AbstractVmBackup {
+  // calls fn for each function, warns of any errors, and throws only if there are no writers left
+  async _callWriters(fn, step, parallel = true) {
+    const writers = this._writers
+    const n = writers.size
+    if (n === 0) {
+      return
+    }
+
+    async function callWriter(writer) {
+      const { name } = writer.constructor
+      try {
+        debug('writer step starting', { step, writer: name })
+        await fn(writer)
+        debug('writer step succeeded', { duration: step, writer: name })
+      } catch (error) {
+        writers.delete(writer)
+
+        warn('writer step failed', { error, step, writer: name })
+
+        // these two steps are the only one that are not already in their own sub tasks
+        if (step === 'writer.checkBaseVdis()' || step === 'writer.beforeBackup()') {
+          Task.warning(
+            `the writer ${name} has failed the step ${step} with error ${error.message}. It won't be used anymore in this job execution.`
+          )
+        }
+
+        throw error
+      }
+    }
+    if (n === 1) {
+      const [writer] = writers
+      return callWriter(writer)
+    }
+
+    const errors = []
+    await (parallel ? asyncMap : asyncEach)(writers, async function (writer) {
+      try {
+        await callWriter(writer)
+      } catch (error) {
+        errors.push(error)
+      }
+    })
+    if (writers.size === 0) {
+      throw new AggregateError(errors, 'all targets have failed, step: ' + step)
+    }
+  }
+
+  async _healthCheck() {
+    const settings = this._settings
+
+    if (this._healthCheckSr === undefined) {
+      return
+    }
+
+    // check if current VM has tags
+    const { tags } = this.vm
+    const intersect = settings.healthCheckVmsWithTags.some(t => tags.includes(t))
+
+    if (settings.healthCheckVmsWithTags.length !== 0 && !intersect) {
+      return
+    }
+
+    await this._callWriters(writer => writer.healthCheck(this._healthCheckSr), 'writer.healthCheck()')
+  }
+}

@xen-orchestra/backups/_backupJob/VmBackup/AbstractXapiVmBackup.js

@@ -0,0 +1,258 @@
+'use strict'
+
+const assert = require('assert')
+const groupBy = require('lodash/groupBy.js')
+const ignoreErrors = require('promise-toolbox/ignoreErrors')
+const { asyncMap } = require('@xen-orchestra/async-map')
+const { decorateMethodsWith } = require('@vates/decorate-with')
+const { defer } = require('golike-defer')
+const { formatDateTime } = require('@xen-orchestra/xapi')
+
+const { getOldEntries } = require('../../_getOldEntries.js')
+const { Task } = require('../../Task.js')
+const { AbstractVmBackup } = require('./AbstractVMBackup.js')
+
+class AbstractXapiVmBackup extends AbstractVmBackup {
+  constructor({
+    config,
+    getSnapshotNameLabel,
+    healthCheckSr,
+    job,
+    remoteAdapters,
+    remotes,
+    schedule,
+    settings,
+    srs,
+    throttleStream,
+    vm,
+  }) {
+    super()
+    if (vm.other_config['xo:backup:job'] === job.id && 'start' in vm.blocked_operations) {
+      // don't match replicated VMs created by this very job otherwise they
+      // will be replicated again and again
+      throw new Error('cannot backup a VM created by this very job')
+    }
+
+    this.config = config
+    this.job = job
+    this.remoteAdapters = remoteAdapters
+    this.scheduleId = schedule.id
+    this.timestamp = undefined
+
+    // VM currently backed up
+    this.vm = vm
+    const { tags } = this.vm
+
+    // VM (snapshot) that is really exported
+    this.exportedVm = undefined
+
+    this._fullVdisRequired = undefined
+    this._getSnapshotNameLabel = getSnapshotNameLabel
+    this._isIncremental = job.mode === 'delta'
+    this._healthCheckSr = healthCheckSr
+    this._jobId = job.id
+    this._jobSnapshots = undefined
+    this._throttleStream = throttleStream
+    this._xapi = vm.$xapi
+
+    // Base VM for the export
+    this._baseVm = undefined
+
+    // Settings for this specific run (job, schedule, VM)
+    if (tags.includes('xo-memory-backup')) {
+      settings.checkpointSnapshot = true
+    }
+    if (tags.includes('xo-offline-backup')) {
+      settings.offlineSnapshot = true
+    }
+    this._settings = settings
+
+    // Create writers
+    {
+      const writers = new Set()
+      this._writers = writers
+
+      const [BackupWriter, ReplicationWriter] = this._getWriters()
+
+      const allSettings = job.settings
+      Object.keys(remoteAdapters).forEach(remoteId => {
+        const targetSettings = {
+          ...settings,
+          ...allSettings[remoteId],
+        }
+        if (targetSettings.exportRetention !== 0) {
+          writers.add(new BackupWriter({ backup: this, remoteId, settings: targetSettings }))
+        }
+      })
+      srs.forEach(sr => {
+        const targetSettings = {
+          ...settings,
+          ...allSettings[sr.uuid],
+        }
+        if (targetSettings.copyRetention !== 0) {
+          writers.add(new ReplicationWriter({ backup: this, sr, settings: targetSettings }))
+        }
+      })
+    }
+  }
+
+  // ensure the VM itself does not have any backup metadata which would be
+  // copied on manual snapshots and interfere with the backup jobs
+  async _cleanMetadata() {
+    const { vm } = this
+    if ('xo:backup:job' in vm.other_config) {
+      await vm.update_other_config({
+        'xo:backup:datetime': null,
+        'xo:backup:deltaChainLength': null,
+        'xo:backup:exported': null,
+        'xo:backup:job': null,
+        'xo:backup:schedule': null,
+        'xo:backup:vm': null,
+      })
+    }
+  }
+
+  async _snapshot() {
+    const { vm } = this
+    const xapi = this._xapi
+
+    const settings = this._settings
+
+    if (this._mustDoSnapshot()) {
+      await Task.run({ name: 'snapshot' }, async () => {
+        if (!settings.bypassVdiChainsCheck) {
+          await vm.$assertHealthyVdiChains()
+        }
+
+        const snapshotRef = await vm[settings.checkpointSnapshot ? '$checkpoint' : '$snapshot']({
+          ignoreNobakVdis: true,
+          name_label: this._getSnapshotNameLabel(vm),
+          unplugVusbs: true,
+        })
+        this.timestamp = Date.now()
+
+        await xapi.setFieldEntries('VM', snapshotRef, 'other_config', {
+          'xo:backup:datetime': formatDateTime(this.timestamp),
+          'xo:backup:job': this._jobId,
+          'xo:backup:schedule': this.scheduleId,
+          'xo:backup:vm': vm.uuid,
+        })
+
+        this.exportedVm = await xapi.getRecord('VM', snapshotRef)
+
+        return this.exportedVm.uuid
+      })
+    } else {
+      this.exportedVm = vm
+      this.timestamp = Date.now()
+    }
+  }
+
+  async _fetchJobSnapshots() {
+    const jobId = this._jobId
+    const vmRef = this.vm.$ref
+    const xapi = this._xapi
+
+    const snapshotsRef = await xapi.getField('VM', vmRef, 'snapshots')
+    const snapshotsOtherConfig = await asyncMap(snapshotsRef, ref => xapi.getField('VM', ref, 'other_config'))
+
+    const snapshots = []
+    snapshotsOtherConfig.forEach((other_config, i) => {
+      if (other_config['xo:backup:job'] === jobId) {
+        snapshots.push({ other_config, $ref: snapshotsRef[i] })
+      }
+    })
+    snapshots.sort((a, b) => (a.other_config['xo:backup:datetime'] < b.other_config['xo:backup:datetime'] ? -1 : 1))
+    this._jobSnapshots = snapshots
+  }
+
+  async _removeUnusedSnapshots() {
+    const allSettings = this.job.settings
+    const baseSettings = this._baseSettings
+    const baseVmRef = this._baseVm?.$ref
+
+    const snapshotsPerSchedule = groupBy(this._jobSnapshots, _ => _.other_config['xo:backup:schedule'])
+    const xapi = this._xapi
+    await asyncMap(Object.entries(snapshotsPerSchedule), ([scheduleId, snapshots]) => {
+      const settings = {
+        ...baseSettings,
+        ...allSettings[scheduleId],
+        ...allSettings[this.vm.uuid],
+      }
+      return asyncMap(getOldEntries(settings.snapshotRetention, snapshots), ({ $ref }) => {
+        if ($ref !== baseVmRef) {
+          return xapi.VM_destroy($ref)
+        }
+      })
+    })
+  }
+
+  async copy() {
+    throw new Error('Not implemented')
+  }
+
+  _getWriters() {
+    throw new Error('Not implemented')
+  }
+
+  _mustDoSnapshot() {
+    throw new Error('Not implemented')
+  }
+
+  async _selectBaseVm() {
+    throw new Error('Not implemented')
+  }
+
+  async run($defer) {
+    const settings = this._settings
+    assert(
+      !settings.offlineBackup || settings.snapshotRetention === 0,
+      'offlineBackup is not compatible with snapshotRetention'
+    )
+
+    await this._callWriters(async writer => {
+      await writer.beforeBackup()
+      $defer(async () => {
+        await writer.afterBackup()
+      })
+    }, 'writer.beforeBackup()')
+
+    await this._fetchJobSnapshots()
+
+    await this._selectBaseVm()
+
+    await this._cleanMetadata()
+    await this._removeUnusedSnapshots()
+
+    const { vm } = this
+    const isRunning = vm.power_state === 'Running'
+    const startAfter = isRunning && (settings.offlineBackup ? 'backup' : settings.offlineSnapshot && 'snapshot')
+    if (startAfter) {
+      await vm.$callAsync('clean_shutdown')
+    }
+
+    try {
+      await this._snapshot()
+      if (startAfter === 'snapshot') {
+        ignoreErrors.call(vm.$callAsync('start', false, false))
+      }
+
+      if (this._writers.size !== 0) {
+        await this._copy()
+      }
+    } finally {
+      if (startAfter) {
+        ignoreErrors.call(vm.$callAsync('start', false, false))
+      }
+
+      await this._fetchJobSnapshots()
+      await this._removeUnusedSnapshots()
+    }
+    await this._healthCheck()
+  }
+}
+exports.AbstractXapiVmBackup = AbstractXapiVmBackup
+
+decorateMethodsWith(AbstractXapiVmBackup, {
+  run: defer,
+})

@xen-orchestra/backups/_backupJob/VmBackup/FullXapiVmBackup.js

@@ -0,0 +1,61 @@
+'use strict'
+
+const { createLogger } = require('@xen-orchestra/log')
+
+const { forkStreamUnpipe } = require('../forkStreamUnpipe.js')
+const { FullRemoteWriter } = require('./writers/FullRemoteWriter.js')
+const { FullXapiWriter } = require('./writers/FullXapiWriter.js')
+const { watchStreamSize } = require('../../_watchStreamSize.js')
+const { AbstractXapiVmBackup } = require('./AbstractXapiVmBackup.js')
+
+const { debug } = createLogger('xo:backups:FullXapiVmBackup')
+
+exports.FullXapiVmBackup = class FullXapiVmBackup extends AbstractXapiVmBackup {
+  _getWriters() {
+    return [FullRemoteWriter, FullXapiWriter]
+  }
+
+  _mustDoSnapshot() {
+    const { vm } = this
+
+    const settings = this._settings
+    return (
+      settings.unconditionalSnapshot ||
+      (!settings.offlineBackup && vm.power_state === 'Running') ||
+      settings.snapshotRetention !== 0
+    )
+  }
+  _selectBaseVm() {}
+
+  async _copy() {
+    const { compression } = this.job
+    const stream = this._throttleStream(
+      await this._xapi.VM_export(this.exportedVm.$ref, {
+        compress: Boolean(compression) && (compression === 'native' ? 'gzip' : 'zstd'),
+        useSnapshot: false,
+      })
+    )
+    const sizeContainer = watchStreamSize(stream)
+
+    const timestamp = Date.now()
+
+    await this._callWriters(
+      writer =>
+        writer.run({
+          sizeContainer,
+          stream: forkStreamUnpipe(stream),
+          timestamp,
+        }),
+      'writer.run()'
+    )
+
+    const { size } = sizeContainer
+    const end = Date.now()
+    const duration = end - timestamp
+    debug('transfer complete', {
+      duration,
+      speed: duration !== 0 ? (size * 1e3) / 1024 / 1024 / duration : 0,
+      size,
+    })
+  }
+}

@xen-orchestra/backups/_backupJob/VmBackup/IncrementalXapiVmBackup.js

@@ -0,0 +1,170 @@
+'use strict'
+
+const findLast = require('lodash/findLast.js')
+const keyBy = require('lodash/keyBy.js')
+const mapValues = require('lodash/mapValues.js')
+const vhdStreamValidator = require('vhd-lib/vhdStreamValidator.js')
+const { asyncMap } = require('@xen-orchestra/async-map')
+const { createLogger } = require('@xen-orchestra/log')
+const { pipeline } = require('node:stream')
+
+const { IncrementalRemoteWriter } = require('./writers/IncrementalRemoteWriter.js')
+const { IncrementalXapiWriter } = require('./writers/IncrementalXapiWriter.js')
+const { exportIncrementalVm } = require('../../_incrementalVm.js')
+const { forkStreamUnpipe } = require('../forkStreamUnpipe.js')
+const { Task } = require('../../Task.js')
+const { watchStreamSize } = require('../../_watchStreamSize.js')
+const { AbstractXapiVmBackup } = require('./AbstractXapiVmBackup.js')
+
+const { debug } = createLogger('xo:backups:IncrementalXapiVmBackup')
+
+const forkDeltaExport = deltaExport =>
+  Object.create(deltaExport, {
+    streams: {
+      value: mapValues(deltaExport.streams, forkStreamUnpipe),
+    },
+  })
+
+const noop = Function.prototype
+
+exports.IncrementalXapiVmBackup = class IncrementalXapiVmBackup extends AbstractXapiVmBackup {
+  _getWriters() {
+    return [IncrementalRemoteWriter, IncrementalXapiWriter]
+  }
+
+  _mustDoSnapshot() {
+    return true
+  }
+
+  async _copy() {
+    const { exportedVm } = this
+    const baseVm = this._baseVm
+    const fullVdisRequired = this._fullVdisRequired
+
+    const isFull = fullVdisRequired === undefined || fullVdisRequired.size !== 0
+
+    await this._callWriters(writer => writer.prepare({ isFull }), 'writer.prepare()')
+
+    const deltaExport = await exportIncrementalVm(exportedVm, baseVm, {
+      fullVdisRequired,
+    })
+    // since NBD is network based, if one disk use nbd , all the disk use them
+    // except the suspended VDI
+    if (Object.values(deltaExport.streams).some(({ _nbd }) => _nbd)) {
+      Task.info('Transfer data using NBD')
+    }
+    const sizeContainers = mapValues(deltaExport.streams, stream => watchStreamSize(stream))
+
+    if (this._settings.validateVhdStreams) {
+      deltaExport.streams = mapValues(deltaExport.streams, stream => pipeline(stream, vhdStreamValidator, noop))
+    }
+
+    deltaExport.streams = mapValues(deltaExport.streams, this._throttleStream)
+
+    const timestamp = Date.now()
+
+    await this._callWriters(
+      writer =>
+        writer.transfer({
+          deltaExport: forkDeltaExport(deltaExport),
+          sizeContainers,
+          timestamp,
+        }),
+      'writer.transfer()'
+    )
+
+    this._baseVm = exportedVm
+
+    if (baseVm !== undefined) {
+      await exportedVm.update_other_config(
+        'xo:backup:deltaChainLength',
+        String(+(baseVm.other_config['xo:backup:deltaChainLength'] ?? 0) + 1)
+      )
+    }
+
+    // not the case if offlineBackup
+    if (exportedVm.is_a_snapshot) {
+      await exportedVm.update_other_config('xo:backup:exported', 'true')
+    }
+
+    const size = Object.values(sizeContainers).reduce((sum, { size }) => sum + size, 0)
+    const end = Date.now()
+    const duration = end - timestamp
+    debug('transfer complete', {
+      duration,
+      speed: duration !== 0 ? (size * 1e3) / 1024 / 1024 / duration : 0,
+      size,
+    })
+
+    await this._callWriters(writer => writer.cleanup(), 'writer.cleanup()')
+  }
+
+  async _selectBaseVm() {
+    const xapi = this._xapi
+
+    let baseVm = findLast(this._jobSnapshots, _ => 'xo:backup:exported' in _.other_config)
+    if (baseVm === undefined) {
+      debug('no base VM found')
+      return
+    }
+
+    const fullInterval = this._settings.fullInterval
+    const deltaChainLength = +(baseVm.other_config['xo:backup:deltaChainLength'] ?? 0) + 1
+    if (!(fullInterval === 0 || fullInterval > deltaChainLength)) {
+      debug('not using base VM becaust fullInterval reached')
+      return
+    }
+
+    const srcVdis = keyBy(await xapi.getRecords('VDI', await this.vm.$getDisks()), '$ref')
+
+    // resolve full record
+    baseVm = await xapi.getRecord('VM', baseVm.$ref)
+
+    const baseUuidToSrcVdi = new Map()
+    await asyncMap(await baseVm.$getDisks(), async baseRef => {
+      const [baseUuid, snapshotOf] = await Promise.all([
+        xapi.getField('VDI', baseRef, 'uuid'),
+        xapi.getField('VDI', baseRef, 'snapshot_of'),
+      ])
+      const srcVdi = srcVdis[snapshotOf]
+      if (srcVdi !== undefined) {
+        baseUuidToSrcVdi.set(baseUuid, srcVdi)
+      } else {
+        debug('ignore snapshot VDI because no longer present on VM', {
+          vdi: baseUuid,
+        })
+      }
+    })
+
+    const presentBaseVdis = new Map(baseUuidToSrcVdi)
+    await this._callWriters(
+      writer => presentBaseVdis.size !== 0 && writer.checkBaseVdis(presentBaseVdis, baseVm),
+      'writer.checkBaseVdis()',
+      false
+    )
+
+    if (presentBaseVdis.size === 0) {
+      debug('no base VM found')
+      return
+    }
+
+    const fullVdisRequired = new Set()
+    baseUuidToSrcVdi.forEach((srcVdi, baseUuid) => {
+      if (presentBaseVdis.has(baseUuid)) {
+        debug('found base VDI', {
+          base: baseUuid,
+          vdi: srcVdi.uuid,
+        })
+      } else {
+        debug('missing base VDI', {
+          base: baseUuid,
+          vdi: srcVdi.uuid,
+        })
+        fullVdisRequired.add(srcVdi.uuid)
+      }
+    })
+
+    this._baseVm = baseVm
+    this._fullVdisRequired = fullVdisRequired
+  }
+}

@xen-orchestra/backups/_backupJob/VmBackup/writers/FullRemoteWriter.js

@@ -1,13 +1,13 @@
 'use strict'
 
-const { formatFilenameDate } = require('../_filenameDate.js')
-const { getOldEntries } = require('../_getOldEntries.js')
-const { Task } = require('../Task.js')
+const { formatFilenameDate } = require('../../../_filenameDate.js')
+const { getOldEntries } = require('../../../_getOldEntries.js')
+const { Task } = require('../../../Task.js')
 
-const { MixinBackupWriter } = require('./_MixinBackupWriter.js')
+const { MixinRemoteWriter } = require('./_MixinRemoteWriter.js')
 const { AbstractFullWriter } = require('./_AbstractFullWriter.js')
 
-exports.FullBackupWriter = class FullBackupWriter extends MixinBackupWriter(AbstractFullWriter) {
+exports.FullRemoteWriter = class FullRemoteWriter extends MixinRemoteWriter(AbstractFullWriter) {
   constructor(props) {
     super(props)
 

@xen-orchestra/backups/_backupJob/VmBackup/writers/FullXapiWriter.js

@@ -4,15 +4,15 @@ const ignoreErrors = require('promise-toolbox/ignoreErrors')
 const { asyncMap, asyncMapSettled } = require('@xen-orchestra/async-map')
 const { formatDateTime } = require('@xen-orchestra/xapi')
 
-const { formatFilenameDate } = require('../_filenameDate.js')
-const { getOldEntries } = require('../_getOldEntries.js')
-const { Task } = require('../Task.js')
+const { formatFilenameDate } = require('../../../_filenameDate.js')
+const { getOldEntries } = require('../../../_getOldEntries.js')
+const { Task } = require('../../../Task.js')
 
 const { AbstractFullWriter } = require('./_AbstractFullWriter.js')
-const { MixinReplicationWriter } = require('./_MixinReplicationWriter.js')
+const { MixinXapiWriter } = require('./_MixinXapiWriter.js')
 const { listReplicatedVms } = require('./_listReplicatedVms.js')
 
-exports.FullReplicationWriter = class FullReplicationWriter extends MixinReplicationWriter(AbstractFullWriter) {
+exports.FullXapiWriter = class FullXapiWriter extends MixinXapiWriter(AbstractFullWriter) {
   constructor(props) {
     super(props)
 
@@ -21,6 +21,7 @@ exports.FullReplicationWriter = class FullReplicationWriter extends MixinReplica
         name: 'export',
         data: {
           id: props.sr.uuid,
+          name_label: this._sr.name_label,
           type: 'SR',
 
           // necessary?

@xen-orchestra/backups/_backupJob/VmBackup/writers/IncrementalRemoteWriter.js

@@ -11,20 +11,19 @@ const { decorateClass } = require('@vates/decorate-with')
 const { defer } = require('golike-defer')
 const { dirname } = require('path')
 
-const { formatFilenameDate } = require('../_filenameDate.js')
-const { getOldEntries } = require('../_getOldEntries.js')
-const { Task } = require('../Task.js')
+const { formatFilenameDate } = require('../../../_filenameDate.js')
+const { getOldEntries } = require('../../../_getOldEntries.js')
+const { Task } = require('../../../Task.js')
 
-const { MixinBackupWriter } = require('./_MixinBackupWriter.js')
-const { AbstractDeltaWriter } = require('./_AbstractDeltaWriter.js')
+const { MixinRemoteWriter } = require('./_MixinRemoteWriter.js')
+const { AbstractIncrementalWriter } = require('./_AbstractIncrementalWriter.js')
 const { checkVhd } = require('./_checkVhd.js')
 const { packUuid } = require('./_packUuid.js')
 const { Disposable } = require('promise-toolbox')
-const NbdClient = require('@vates/nbd-client')
 
-const { debug, warn, info } = createLogger('xo:backups:DeltaBackupWriter')
+const { warn } = createLogger('xo:backups:DeltaBackupWriter')
 
-class DeltaBackupWriter extends MixinBackupWriter(AbstractDeltaWriter) {
+class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrementalWriter) {
   async checkBaseVdis(baseUuidToSrcVdi) {
     const { handler } = this._adapter
     const backup = this._backup
@@ -200,41 +199,12 @@ class DeltaBackupWriter extends MixinBackupWriter(AbstractDeltaWriter) {
             await checkVhd(handler, parentPath)
           }
 
-          const vdiRef = vm.$xapi.getObject(vdi.uuid).$ref
-
-          let nbdClient
-          if (this._backup.config.useNbd && adapter.useVhdDirectory()) {
-            debug('useNbd is enabled', { vdi: id, path })
-            // get nbd if possible
-            try {
-              // this will always take the first host in the list
-              const [nbdInfo] = await vm.$xapi.call('VDI.get_nbd_info', vdiRef)
-              debug('got NBD info', { nbdInfo, vdi: id, path })
-              nbdClient = new NbdClient(nbdInfo)
-              await nbdClient.connect()
-
-              // this will inform the xapi that we don't need this anymore
-              // and will detach the vdi from dom0
-              $defer(() => nbdClient.disconnect())
-
-              info('NBD client ready', { vdi: id, path })
-              Task.info('NBD used')
-            } catch (error) {
-              Task.warning('NBD configured but unusable', { error })
-              nbdClient = undefined
-              warn('error connecting to NBD server', { error, vdi: id, path })
-            }
-          } else {
-            debug('useNbd is disabled', { vdi: id, path })
-          }
-
           transferSize += await adapter.writeVhd(path, deltaExport.streams[`${id}.vhd`], {
             // no checksum for VHDs, because they will be invalidated by
             // merges and chainings
             checksum: false,
             validator: tmpPath => checkVhd(handler, tmpPath),
             writeBlockConcurrency: this._backup.config.writeBlockConcurrency,
-            nbdClient,
           })
 
           if (isDelta) {
@@ -257,6 +227,6 @@ class DeltaBackupWriter extends MixinBackupWriter(AbstractDeltaWriter) {
     // TODO: run cleanup?
   }
 }
-exports.DeltaBackupWriter = decorateClass(DeltaBackupWriter, {
+exports.IncrementalRemoteWriter = decorateClass(IncrementalRemoteWriter, {
   _transfer: defer,
 })

@xen-orchestra/backups/_backupJob/VmBackup/writers/IncrementalXapiWriter.js

@@ -4,16 +4,16 @@ const { asyncMap, asyncMapSettled } = require('@xen-orchestra/async-map')
 const ignoreErrors = require('promise-toolbox/ignoreErrors')
 const { formatDateTime } = require('@xen-orchestra/xapi')
 
-const { formatFilenameDate } = require('../_filenameDate.js')
-const { getOldEntries } = require('../_getOldEntries.js')
-const { importDeltaVm, TAG_COPY_SRC } = require('../_deltaVm.js')
-const { Task } = require('../Task.js')
+const { formatFilenameDate } = require('../../../_filenameDate.js')
+const { getOldEntries } = require('../../../_getOldEntries.js')
+const { importIncrementalVm, TAG_COPY_SRC } = require('../../../_incrementalVm.js')
+const { Task } = require('../../../Task.js')
 
-const { AbstractDeltaWriter } = require('./_AbstractDeltaWriter.js')
-const { MixinReplicationWriter } = require('./_MixinReplicationWriter.js')
+const { AbstractIncrementalWriter } = require('./_AbstractIncrementalWriter.js')
+const { MixinXapiWriter } = require('./_MixinXapiWriter.js')
 const { listReplicatedVms } = require('./_listReplicatedVms.js')
 
-exports.DeltaReplicationWriter = class DeltaReplicationWriter extends MixinReplicationWriter(AbstractDeltaWriter) {
+exports.IncrementalXapiWriter = class IncrementalXapiWriter extends MixinXapiWriter(AbstractIncrementalWriter) {
   async checkBaseVdis(baseUuidToSrcVdi, baseVm) {
     const sr = this._sr
     const replicatedVm = listReplicatedVms(sr.$xapi, this._backup.job.id, sr.uuid, this._backup.vm.uuid).find(
@@ -45,11 +45,13 @@ exports.DeltaReplicationWriter = class DeltaReplicationWriter extends MixinRepli
       data: {
         id: this._sr.uuid,
         isFull,
+        name_label: this._sr.name_label,
         type: 'SR',
       },
     })
     this.transfer = task.wrapFn(this.transfer)
-    this.cleanup = task.wrapFn(this.cleanup, true)
+    this.cleanup = task.wrapFn(this.cleanup)
+    this.healthCheck = task.wrapFn(this.healthCheck, true)
 
     return task.run(() => this._prepare())
   }
@@ -88,7 +90,7 @@ exports.DeltaReplicationWriter = class DeltaReplicationWriter extends MixinRepli
 
     let targetVmRef
     await Task.run({ name: 'transfer' }, async () => {
-      targetVmRef = await importDeltaVm(
+      targetVmRef = await importIncrementalVm(
         {
           __proto__: deltaExport,
           vm: {

@xen-orchestra/backups/_backupJob/VmBackup/writers/_AbstractIncrementalWriter.js

@@ -2,7 +2,7 @@
 
 const { AbstractWriter } = require('./_AbstractWriter.js')
 
-exports.AbstractDeltaWriter = class AbstractDeltaWriter extends AbstractWriter {
+exports.AbstractIncrementalWriter = class AbstractIncrementalWriter extends AbstractWriter {
   checkBaseVdis(baseUuidToSrcVdi, baseVm) {
     throw new Error('Not implemented')
   }

@xen-orchestra/backups/_backupJob/VmBackup/writers/_MixinRemoteWriter.js

@@ -4,17 +4,17 @@ const { createLogger } = require('@xen-orchestra/log')
 const { join } = require('path')
 
 const assert = require('assert')
-const { formatFilenameDate } = require('../_filenameDate.js')
-const { getVmBackupDir } = require('../_getVmBackupDir.js')
-const { HealthCheckVmBackup } = require('../HealthCheckVmBackup.js')
-const { ImportVmBackup } = require('../ImportVmBackup.js')
-const { Task } = require('../Task.js')
-const MergeWorker = require('../merge-worker/index.js')
+const { formatFilenameDate } = require('../../../_filenameDate.js')
+const { getVmBackupDir } = require('../../../_getVmBackupDir.js')
+const { HealthCheckVmBackup } = require('../../../HealthCheckVmBackup.js')
+const { ImportVmBackup } = require('../../../ImportVmBackup.js')
+const { Task } = require('../../../Task.js')
+const MergeWorker = require('../../../merge-worker/index.js')
 
 const { info, warn } = createLogger('xo:backups:MixinBackupWriter')
 
-exports.MixinBackupWriter = (BaseClass = Object) =>
-  class MixinBackupWriter extends BaseClass {
+exports.MixinRemoteWriter = (BaseClass = Object) =>
+  class MixinRemoteWriter extends BaseClass {
     #lock
 
     constructor({ remoteId, ...rest }) {
@@ -80,7 +80,7 @@ exports.MixinBackupWriter = (BaseClass = Object) =>
       assert.notStrictEqual(
         this._metadataFileName,
         undefined,
-        'Metadata file name should be defined before making a healthcheck'
+        'Metadata file name should be defined before making a health check'
       )
       return Task.run(
         {

@xen-orchestra/backups/_backupJob/VmBackup/writers/_MixinXapiWriter.js

@@ -1,8 +1,8 @@
 'use strict'
 
-const { Task } = require('../Task')
+const { Task } = require('../../../Task')
 const assert = require('node:assert/strict')
-const { HealthCheckVmBackup } = require('../HealthCheckVmBackup')
+const { HealthCheckVmBackup } = require('../../../HealthCheckVmBackup')
 
 function extractOpaqueRef(str) {
   const OPAQUE_REF_RE = /OpaqueRef:[0-9a-z-]+/
@@ -12,8 +12,8 @@ function extractOpaqueRef(str) {
   }
   return matches[0]
 }
-exports.MixinReplicationWriter = (BaseClass = Object) =>
-  class MixinReplicationWriter extends BaseClass {
+exports.MixinXapiWriter = (BaseClass = Object) =>
+  class MixinXapiWriter extends BaseClass {
     constructor({ sr, ...rest }) {
       super(rest)
 

@xen-orchestra/backups/_backupJob/XapiVmBackupJob.js

@@ -0,0 +1,138 @@
+'use strict'
+
+const { asyncMapSettled } = require('@xen-orchestra/async-map')
+const Disposable = require('promise-toolbox/Disposable')
+const { limitConcurrency } = require('limit-concurrency-decorator')
+
+const { extractIdsFromSimplePattern } = require('../extractIdsFromSimplePattern.js')
+const { Task } = require('../Task.js')
+const { createStreamThrottle } = require('./createStreamThrottle.js')
+const { DEFAULT_SETTINGS, AbstractBackupJob } = require('./AbstractBackupJob.js')
+const { runTask } = require('./runTask.js')
+const { getAdaptersByRemote } = require('./getAdaptersByRemote.js')
+const { IncrementalXapiVmBackup } = require('./VmBackup/IncrementalXapiVmBackup.js')
+const { FullXapiVmBackup } = require('./VmBackup/FullXapiVmBackup.js')
+
+const DEFAULT_XAPI_VM_SETTINGS = {
+  bypassVdiChainsCheck: false,
+  checkpointSnapshot: false,
+  concurrency: 2,
+  copyRetention: 0,
+  deleteFirst: false,
+  exportRetention: 0,
+  fullInterval: 0,
+  healthCheckSr: undefined,
+  healthCheckVmsWithTags: [],
+  maxExportRate: 0,
+  maxMergedDeltasPerRun: Infinity,
+  offlineBackup: false,
+  offlineSnapshot: false,
+  snapshotRetention: 0,
+  timeout: 0,
+  useNbd: false,
+  unconditionalSnapshot: false,
+  validateVhdStreams: false,
+  vmTimeout: 0,
+}
+
+exports.XapiVmBackupJob = class XapiVmBackupJob extends AbstractBackupJob {
+  _computeBaseSettings(config, job) {
+    const baseSettings = { ...DEFAULT_SETTINGS }
+    Object.assign(baseSettings, DEFAULT_XAPI_VM_SETTINGS, config.defaultSettings, config.vm?.defaultSettings)
+    Object.assign(baseSettings, job.settings[''])
+    return baseSettings
+  }
+
+  async run() {
+    const job = this._job
+
+    // FIXME: proper SimpleIdPattern handling
+    const getSnapshotNameLabel = this._getSnapshotNameLabel
+    const schedule = this._schedule
+    const settings = this._settings
+
+    const throttleStream = createStreamThrottle(settings.maxExportRate)
+
+    const config = this._config
+    await Disposable.use(
+      Disposable.all(
+        extractIdsFromSimplePattern(job.srs).map(id =>
+          this._getRecord('SR', id).catch(error => {
+            runTask(
+              {
+                name: 'get SR record',
+                data: { type: 'SR', id },
+              },
+              () => Promise.reject(error)
+            )
+          })
+        )
+      ),
+      Disposable.all(extractIdsFromSimplePattern(job.remotes).map(id => this._getAdapter(id))),
+      () => (settings.healthCheckSr !== undefined ? this._getRecord('SR', settings.healthCheckSr) : undefined),
+      async (srs, remoteAdapters, healthCheckSr) => {
+        // remove adapters that failed (already handled)
+        remoteAdapters = remoteAdapters.filter(_ => _ !== undefined)
+
+        // remove srs that failed (already handled)
+        srs = srs.filter(_ => _ !== undefined)
+
+        if (remoteAdapters.length === 0 && srs.length === 0 && settings.snapshotRetention === 0) {
+          return
+        }
+
+        const vmIds = extractIdsFromSimplePattern(job.vms)
+
+        Task.info('vms', { vms: vmIds })
+
+        remoteAdapters = getAdaptersByRemote(remoteAdapters)
+
+        const allSettings = this._job.settings
+        const baseSettings = this._baseSettings
+
+        const handleVm = vmUuid => {
+          const taskStart = { name: 'backup VM', data: { type: 'VM', id: vmUuid } }
+
+          return this._getRecord('VM', vmUuid).then(
+            disposableVm =>
+              Disposable.use(disposableVm, vm => {
+                taskStart.data.name_label = vm.name_label
+                return runTask(taskStart, () => {
+                  const opts = {
+                    baseSettings,
+                    config,
+                    getSnapshotNameLabel,
+                    healthCheckSr,
+                    job,
+                    remoteAdapters,
+                    schedule,
+                    settings: { ...settings, ...allSettings[vm.uuid] },
+                    srs,
+                    throttleStream,
+                    vm,
+                  }
+                  let vmBackup
+                  if (job.mode === 'delta') {
+                    vmBackup = new IncrementalXapiVmBackup(opts)
+                  } else {
+                    if (job.mode === 'full') {
+                      vmBackup = new FullXapiVmBackup(opts)
+                    } else {
+                      throw new Error(`Job mode ${job.mode} not implemented`)
+                    }
+                  }
+                  return vmBackup.run()
+                })
+              }),
+            error =>
+              runTask(taskStart, () => {
+                throw error
+              })
+          )
+        }
+        const { concurrency } = settings
+        await asyncMapSettled(vmIds, concurrency === 0 ? handleVm : limitConcurrency(concurrency)(handleVm))
+      }
+    )
+  }
+}

@xen-orchestra/backups/_backupJob/XoMetadataBackup.js

@@ -2,9 +2,9 @@
 
 const { asyncMap } = require('@xen-orchestra/async-map')
 
-const { DIR_XO_CONFIG_BACKUPS } = require('./RemoteAdapter.js')
-const { formatFilenameDate } = require('./_filenameDate.js')
-const { Task } = require('./Task.js')
+const { DIR_XO_CONFIG_BACKUPS } = require('../RemoteAdapter.js')
+const { formatFilenameDate } = require('../_filenameDate.js')
+const { Task } = require('../Task.js')
 
 exports.XoMetadataBackup = class XoMetadataBackup {
   constructor({ config, job, remoteAdapters, schedule, settings }) {

@xen-orchestra/backups/_backupJob/createStreamThrottle.js

@@ -6,7 +6,7 @@ const identity = require('lodash/identity.js')
 
 const noop = Function.prototype
 
-module.exports = function createStreamThrottle(rate) {
+exports.createStreamThrottle = function createStreamThrottle(rate) {
   if (rate === 0) {
     return identity
   }

@xen-orchestra/backups/_backupJob/getAdaptersByRemote.js

@@ -0,0 +1,9 @@
+'use strict'
+const getAdaptersByRemote = adapters => {
+  const adaptersByRemote = {}
+  adapters.forEach(({ adapter, remoteId }) => {
+    adaptersByRemote[remoteId] = adapter
+  })
+  return adaptersByRemote
+}
+exports.getAdaptersByRemote = getAdaptersByRemote

@xen-orchestra/backups/_backupJob/runTask.js

@@ -0,0 +1,6 @@
+'use strict'
+const { Task } = require('../Task.js')
+const noop = Function.prototype
+const runTask = (...args) => Task.run(...args).catch(noop) // errors are handled by logs
+
+exports.runTask = runTask

@xen-orchestra/backups/_backupWorker.js

@@ -13,10 +13,10 @@ const { createDebounceResource } = require('@vates/disposable/debounceResource.j
 const { decorateMethodsWith } = require('@vates/decorate-with')
 const { deduped } = require('@vates/disposable/deduped.js')
 const { getHandler } = require('@xen-orchestra/fs')
+const { instantiateBackupJob } = require('./backupJob.js')
 const { parseDuration } = require('@vates/parse-duration')
 const { Xapi } = require('@xen-orchestra/xapi')
 
-const { Backup } = require('./Backup.js')
 const { RemoteAdapter } = require('./RemoteAdapter.js')
 const { Task } = require('./Task.js')
 
@@ -48,7 +48,7 @@ class BackupWorker {
   }
 
   run() {
-    return new Backup({
+    return instantiateBackupJob({
       config: this.#config,
       getAdapter: remoteId => this.getAdapter(this.#remotes[remoteId]),
       getConnectedRecord: Disposable.factory(async function* getConnectedRecord(type, uuid) {

@xen-orchestra/backups/_cleanVm.integ.js

@@ -3,7 +3,6 @@
 const { beforeEach, afterEach, test, describe } = require('test')
 const assert = require('assert').strict
 
-const rimraf = require('rimraf')
 const tmp = require('tmp')
 const fs = require('fs-extra')
 const uuid = require('uuid')
@@ -14,6 +13,7 @@ const { VHDFOOTER, VHDHEADER } = require('./tests.fixtures.js')
 const { VhdFile, Constants, VhdDirectory, VhdAbstract } = require('vhd-lib')
 const { checkAliases } = require('./_cleanVm')
 const { dirname, basename } = require('path')
+const { rimraf } = require('rimraf')
 
 let tempDir, adapter, handler, jobId, vdiId, basePath, relativePath
 const rootPath = 'xo-vm-backups/VMUUID/'

@xen-orchestra/backups/_incrementalVm.js

@@ -33,7 +33,7 @@ const resolveUuid = async (xapi, cache, uuid, type) => {
   return ref
 }
 
-exports.exportDeltaVm = async function exportDeltaVm(
+exports.exportIncrementalVm = async function exportIncrementalVm(
   vm,
   baseVm,
   {
@@ -143,18 +143,18 @@ exports.exportDeltaVm = async function exportDeltaVm(
   )
 }
 
-exports.importDeltaVm = defer(async function importDeltaVm(
+exports.importIncrementalVm = defer(async function importIncrementalVm(
   $defer,
-  deltaVm,
+  incrementalVm,
   sr,
   { cancelToken = CancelToken.none, detectBase = true, mapVdisSrs = {}, newMacAddresses = false } = {}
 ) {
-  const { version } = deltaVm
+  const { version } = incrementalVm
   if (compareVersions(version, '1.0.0') < 0) {
     throw new Error(`Unsupported delta backup version: ${version}`)
   }
 
-  const vmRecord = deltaVm.vm
+  const vmRecord = incrementalVm.vm
   const xapi = sr.$xapi
 
   let baseVm
@@ -183,15 +183,15 @@ exports.importDeltaVm = defer(async function importDeltaVm(
         baseVdis[vbd.VDI] = vbd.$VDI
       }
     })
-  const vdiRecords = deltaVm.vdis
+  const vdiRecords = incrementalVm.vdis
 
   // 0. Create suspend_VDI
   let suspendVdi
-  if (vmRecord.power_state === 'Suspended') {
+  if (vmRecord.suspend_VDI !== undefined && vmRecord.suspend_VDI !== 'OpaqueRef:NULL') {
     const vdi = vdiRecords[vmRecord.suspend_VDI]
     if (vdi === undefined) {
       Task.warning('Suspend VDI not available for this suspended VM', {
-        vm: pick(vmRecord, 'uuid', 'name_label'),
+        vm: pick(vmRecord, 'uuid', 'name_label', 'suspend_VDI'),
       })
     } else {
       suspendVdi = await xapi.getRecord(
@@ -240,7 +240,7 @@ exports.importDeltaVm = defer(async function importDeltaVm(
   await asyncMap(await xapi.getField('VM', vmRef, 'VBDs'), ref => ignoreErrors.call(xapi.call('VBD.destroy', ref)))
 
   // 3. Create VDIs & VBDs.
-  const vbdRecords = deltaVm.vbds
+  const vbdRecords = incrementalVm.vbds
   const vbds = groupBy(vbdRecords, 'VDI')
   const newVdis = {}
   await asyncMap(Object.keys(vdiRecords), async vdiRef => {
@@ -309,7 +309,7 @@ exports.importDeltaVm = defer(async function importDeltaVm(
     }
   })
 
-  const { streams } = deltaVm
+  const { streams } = incrementalVm
 
   await Promise.all([
     // Import VDI contents.
@@ -326,7 +326,7 @@ exports.importDeltaVm = defer(async function importDeltaVm(
     }),
 
     // Create VIFs.
-    asyncMap(Object.values(deltaVm.vifs), vif => {
+    asyncMap(Object.values(incrementalVm.vifs), vif => {
       let network = vif.$network$uuid && xapi.getObjectByUuid(vif.$network$uuid, undefined)
 
       if (network === undefined) {
@@ -358,8 +358,8 @@ exports.importDeltaVm = defer(async function importDeltaVm(
   ])
 
   await Promise.all([
-    deltaVm.vm.ha_always_run && xapi.setField('VM', vmRef, 'ha_always_run', true),
-    xapi.setField('VM', vmRef, 'name_label', deltaVm.vm.name_label),
+    incrementalVm.vm.ha_always_run && xapi.setField('VM', vmRef, 'ha_always_run', true),
+    xapi.setField('VM', vmRef, 'name_label', incrementalVm.vm.name_label),
   ])
 
   return vmRef

@xen-orchestra/backups/backupJob.js

@@ -0,0 +1,21 @@
+'use strict'
+
+const { MetadatasBackupJob } = require('./_backupJob/MetadatasBackupJob.js')
+const { XapiVmBackupJob } = require('./_backupJob/XapiVMBackupJobs.js')
+
+exports.instantiateBackupJob = function instantiateBackupJob({
+  config,
+  getAdapter,
+  getConnectedRecord,
+  job,
+  schedule,
+}) {
+  switch (job.type) {
+    case 'backup':
+      return new XapiVmBackupJob({ config, getAdapter, getConnectedRecord, job, schedule })
+    case 'metadataBackup':
+      return new MetadatasBackupJob({ config, getAdapter, getConnectedRecord, job, schedule })
+    default:
+      throw new Error(`No runner for the backup type ${job.type}`)
+  }
+}

@xen-orchestra/backups/docs/VM backups/README.md

@@ -94,13 +94,13 @@ In case any incoherence is detected, the file is deleted so it will be fully gen
 job.start(data: { mode: Mode, reportWhen: ReportWhen })
 ├─ task.info(message: 'vms', data: { vms: string[] })
 ├─ task.warning(message: string)
-├─ task.start(data: { type: 'VM', id: string })
+├─ task.start(data: { type: 'VM', id: string, name_label?: string })
 │  ├─ task.warning(message: string)
 |  ├─ task.start(message: 'clean-vm')
 │  │  └─ task.end
 │  ├─ task.start(message: 'snapshot')
 │  │  └─ task.end
-│  ├─ task.start(message: 'export', data: { type: 'SR' | 'remote', id: string, isFull: boolean })
+│  ├─ task.start(message: 'export', data: { type: 'SR' | 'remote', id: string, name_label?: string, isFull: boolean })
 │  │  ├─ task.warning(message: string)
 │  │  ├─ task.start(message: 'transfer')
 │  │  │  ├─ task.warning(message: string)

@xen-orchestra/backups/docs/healthcheck/example.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# This script must be executed at the start of the machine.
+#
+# It must run as root to be able to use xenstore-read and xenstore-write
+
+# fail in case of error or undefined variable
+set -eu
+
+# stop there if a health check is not in progress
+if [ "$(xenstore-read vm-data/xo-backup-health-check 2>&1)" != planned ]
+then
+  exit
+fi
+
+# not necessary, but informs XO that this script has started which helps diagnose issues
+xenstore-write vm-data/xo-backup-health-check running
+
+# put your test here
+#
+# in this example, the command `sqlite3` is used to validate the health of a database
+# and its output is captured and passed to XO via the XenStore in case of error
+if output=$(sqlite3 ~/my-database.sqlite3 .table 2>&1)
+then
+  # inform XO everything is ok
+  xenstore-write vm-data/xo-backup-health-check success
+else
+  # inform XO there is an issue
+  xenstore-write vm-data/xo-backup-health-check failure
+
+  # more info about the issue can be written to `vm-data/health-check-error`
+  #
+  # it will be shown in XO
+  xenstore-write vm-data/xo-backup-health-check-error "$output"
+fi

@xen-orchestra/backups/package.json

@@ -8,13 +8,13 @@
     "type": "git",
     "url": "https://github.com/vatesfr/xen-orchestra.git"
   },
-  "version": "0.32.0",
+  "version": "0.36.1",
   "engines": {
     "node": ">=14.6"
   },
   "scripts": {
     "postversion": "npm publish --access public",
-    "test": "node--test"
+    "test-integration": "node--test *.integ.js"
   },
   "dependencies": {
     "@kldzj/stream-throttle": "^1.1.1",
@@ -24,10 +24,10 @@
     "@vates/decorate-with": "^2.0.0",
     "@vates/disposable": "^0.1.4",
     "@vates/fuse-vhd": "^1.0.0",
-    "@vates/nbd-client": "^1.0.1",
+    "@vates/nbd-client": "^1.2.0",
     "@vates/parse-duration": "^0.1.1",
     "@xen-orchestra/async-map": "^0.1.2",
-    "@xen-orchestra/fs": "^3.3.2",
+    "@xen-orchestra/fs": "^3.3.4",
     "@xen-orchestra/log": "^0.6.0",
     "@xen-orchestra/template": "^0.1.0",
     "compare-versions": "^5.0.1",
@@ -42,17 +42,17 @@
     "promise-toolbox": "^0.21.0",
     "proper-lockfile": "^4.1.2",
     "uuid": "^9.0.0",
-    "vhd-lib": "^4.2.1",
+    "vhd-lib": "^4.4.0",
     "yazl": "^2.5.1"
   },
   "devDependencies": {
-    "rimraf": "^4.1.1",
+    "rimraf": "^5.0.1",
     "sinon": "^15.0.1",
     "test": "^3.2.1",
     "tmp": "^0.2.1"
   },
   "peerDependencies": {
-    "@xen-orchestra/xapi": "^2.0.0"
+    "@xen-orchestra/xapi": "^2.2.0"
   },
   "license": "AGPL-3.0-or-later",
   "author": {

@xen-orchestra/cr-seed-cli/package.json

@@ -18,7 +18,7 @@
   "preferGlobal": true,
   "dependencies": {
     "golike-defer": "^0.5.1",
-    "xen-api": "^1.2.7"
+    "xen-api": "^1.3.1"
   },
   "scripts": {
     "postversion": "npm publish"

@xen-orchestra/fs/package.json

@@ -1,7 +1,7 @@
 {
   "private": false,
   "name": "@xen-orchestra/fs",
-  "version": "3.3.2",
+  "version": "3.3.4",
   "license": "AGPL-3.0-or-later",
   "description": "The File System for Xen Orchestra backups.",
   "homepage": "https://github.com/vatesfr/xen-orchestra/tree/master/@xen-orchestra/fs",
@@ -29,7 +29,7 @@
     "@vates/async-each": "^1.0.0",
     "@vates/coalesce-calls": "^0.1.0",
     "@vates/decorate-with": "^2.0.0",
-    "@vates/read-chunk": "^1.0.1",
+    "@vates/read-chunk": "^1.1.1",
     "@xen-orchestra/async-map": "^0.1.2",
     "@xen-orchestra/log": "^0.6.0",
     "bind-property-descriptor": "^2.0.0",
@@ -53,7 +53,9 @@
     "@babel/preset-env": "^7.8.0",
     "cross-env": "^7.0.2",
     "dotenv": "^16.0.0",
-    "rimraf": "^4.1.1",
+    "rimraf": "^5.0.1",
+    "sinon": "^15.0.4",
+    "test": "^3.3.0",
     "tmp": "^0.2.1"
   },
   "scripts": {
@@ -63,7 +65,9 @@
     "prebuild": "yarn run clean",
     "predev": "yarn run clean",
     "prepublishOnly": "yarn run build",
-    "postversion": "npm publish"
+    "pretest": "yarn run build",
+    "postversion": "npm publish",
+    "test": "node--test ./dist/"
   },
   "author": {
     "name": "Vates SAS",

@xen-orchestra/fs/src/_copyStreamToBuffer.test.js

@@ -1,4 +1,5 @@
-/* eslint-env jest */
+import { describe, it } from 'test'
+import { strict as assert } from 'assert'
 
 import { Readable } from 'readable-stream'
 import copyStreamToBuffer from './_copyStreamToBuffer.js'
@@ -16,6 +17,6 @@ describe('copyStreamToBuffer', () => {
 
     await copyStreamToBuffer(stream, buffer)
 
-    expect(buffer.toString()).toBe('hel')
+    assert.equal(buffer.toString(), 'hel')
   })
 })

@xen-orchestra/fs/src/_createBufferFromStream.test.js

@@ -1,4 +1,5 @@
-/* eslint-env jest */
+import { describe, it } from 'test'
+import { strict as assert } from 'assert'
 
 import { Readable } from 'readable-stream'
 import createBufferFromStream from './_createBufferFromStream.js'
@@ -14,6 +15,6 @@ describe('createBufferFromStream', () => {
 
     const buffer = await createBufferFromStream(stream)
 
-    expect(buffer.toString()).toBe('hello')
+    assert.equal(buffer.toString(), 'hello')
   })
 })

@xen-orchestra/fs/src/_encryptor.test.js

@@ -1,4 +1,6 @@
-/* eslint-env jest */
+import { describe, it } from 'test'
+import { strict as assert } from 'assert'
+
 import { Readable } from 'node:stream'
 import { _getEncryptor } from './_encryptor'
 import crypto from 'crypto'
@@ -25,13 +27,13 @@ algorithms.forEach(algorithm => {
     it('handle buffer', () => {
       const encrypted = encryptor.encryptData(buffer)
       if (algorithm !== 'none') {
-        expect(encrypted.equals(buffer)).toEqual(false) // encrypted should be different
+        assert.equal(encrypted.equals(buffer), false) // encrypted should be different
         // ivlength, auth tag, padding
-        expect(encrypted.length).not.toEqual(buffer.length)
+        assert.notEqual(encrypted.length, buffer.length)
       }
 
       const decrypted = encryptor.decryptData(encrypted)
-      expect(decrypted.equals(buffer)).toEqual(true)
+      assert.equal(decrypted.equals(buffer), true)
     })
 
     it('handle stream', async () => {
@@ -39,12 +41,12 @@ algorithms.forEach(algorithm => {
       stream.length = buffer.length
       const encrypted = encryptor.encryptStream(stream)
       if (algorithm !== 'none') {
-        expect(encrypted.length).toEqual(undefined)
+        assert.equal(encrypted.length, undefined)
       }
 
       const decrypted = encryptor.decryptStream(encrypted)
       const decryptedBuffer = await streamToBuffer(decrypted)
-      expect(decryptedBuffer.equals(buffer)).toEqual(true)
+      assert.equal(decryptedBuffer.equals(buffer), true)
     })
   })
 })

@xen-orchestra/fs/src/_guessAwsRegion.test.js

@@ -1,4 +1,5 @@
-/* eslint-env jest */
+import { describe, it } from 'test'
+import { strict as assert } from 'assert'
 
 import guessAwsRegion from './_guessAwsRegion.js'
 
@@ -6,12 +7,12 @@ describe('guessAwsRegion', () => {
   it('should return region from AWS URL', async () => {
     const region = guessAwsRegion('s3.test-region.amazonaws.com')
 
-    expect(region).toBe('test-region')
+    assert.equal(region, 'test-region')
   })
 
   it('should return default region if none is found is AWS URL', async () => {
     const region = guessAwsRegion('s3.amazonaws.com')
 
-    expect(region).toBe('us-east-1')
+    assert.equal(region, 'us-east-1')
   })
 })

@xen-orchestra/fs/src/abstract.test.js

@@ -1,11 +1,13 @@
-/* eslint-env jest */
+import { after, beforeEach, describe, it } from 'test'
+import { strict as assert } from 'assert'
+import sinon from 'sinon'
 
 import { DEFAULT_ENCRYPTION_ALGORITHM, _getEncryptor } from './_encryptor'
 import { Disposable, pFromCallback, TimeoutError } from 'promise-toolbox'
 import { getSyncedHandler } from '.'
+import { rimraf } from 'rimraf'
 import AbstractHandler from './abstract'
 import fs from 'fs-extra'
-import rimraf from 'rimraf'
 import tmp from 'tmp'
 
 const TIMEOUT = 10e3
@@ -24,7 +26,7 @@ class TestHandler extends AbstractHandler {
 
 const noop = Function.prototype
 
-jest.useFakeTimers()
+const clock = sinon.useFakeTimers()
 
 describe('closeFile()', () => {
   it(`throws in case of timeout`, async () => {
@@ -33,8 +35,8 @@ describe('closeFile()', () => {
     })
 
     const promise = testHandler.closeFile({ fd: undefined, path: '' })
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -45,8 +47,8 @@ describe('getInfo()', () => {
     })
 
     const promise = testHandler.getInfo()
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -57,8 +59,8 @@ describe('getSize()', () => {
     })
 
     const promise = testHandler.getSize('')
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -69,8 +71,8 @@ describe('list()', () => {
     })
 
     const promise = testHandler.list('.')
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -81,8 +83,8 @@ describe('openFile()', () => {
     })
 
     const promise = testHandler.openFile('path')
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -93,8 +95,8 @@ describe('rename()', () => {
     })
 
     const promise = testHandler.rename('oldPath', 'newPath')
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -105,8 +107,8 @@ describe('rmdir()', () => {
     })
 
     const promise = testHandler.rmdir('dir')
-    jest.advanceTimersByTime(TIMEOUT)
-    await expect(promise).rejects.toThrowError(TimeoutError)
+    clock.tick(TIMEOUT)
+    await assert.rejects(promise, TimeoutError)
   })
 })
 
@@ -115,14 +117,14 @@ describe('encryption', () => {
   beforeEach(async () => {
     dir = await pFromCallback(cb => tmp.dir(cb))
   })
-  afterAll(async () => {
+  after(async () => {
     await rimraf(dir)
   })
 
   it('sync should NOT create metadata if missing (not encrypted)', async () => {
     await Disposable.use(getSyncedHandler({ url: `file://${dir}` }), noop)
 
-    expect(await fs.readdir(dir)).toEqual([])
+    assert.deepEqual(await fs.readdir(dir), [])
   })
 
   it('sync should create metadata if missing (encrypted)', async () => {
@@ -131,12 +133,12 @@ describe('encryption', () => {
       noop
     )
 
-    expect(await fs.readdir(dir)).toEqual(['encryption.json', 'metadata.json'])
+    assert.deepEqual(await fs.readdir(dir), ['encryption.json', 'metadata.json'])
 
     const encryption = JSON.parse(await fs.readFile(`${dir}/encryption.json`, 'utf-8'))
-    expect(encryption.algorithm).toEqual(DEFAULT_ENCRYPTION_ALGORITHM)
+    assert.equal(encryption.algorithm, DEFAULT_ENCRYPTION_ALGORITHM)
     // encrypted , should not be parsable
-    expect(async () => JSON.parse(await fs.readFile(`${dir}/metadata.json`))).rejects.toThrowError()
+    assert.rejects(async () => JSON.parse(await fs.readFile(`${dir}/metadata.json`)))
   })
 
   it('sync should not modify existing metadata', async () => {
@@ -146,9 +148,9 @@ describe('encryption', () => {
     await Disposable.use(await getSyncedHandler({ url: `file://${dir}` }), noop)
 
     const encryption = JSON.parse(await fs.readFile(`${dir}/encryption.json`, 'utf-8'))
-    expect(encryption.algorithm).toEqual('none')
+    assert.equal(encryption.algorithm, 'none')
     const metadata = JSON.parse(await fs.readFile(`${dir}/metadata.json`, 'utf-8'))
-    expect(metadata.random).toEqual('NOTSORANDOM')
+    assert.equal(metadata.random, 'NOTSORANDOM')
   })
 
   it('should modify metadata if empty', async () => {
@@ -160,11 +162,11 @@ describe('encryption', () => {
       noop
     )
     let encryption = JSON.parse(await fs.readFile(`${dir}/encryption.json`, 'utf-8'))
-    expect(encryption.algorithm).toEqual(DEFAULT_ENCRYPTION_ALGORITHM)
+    assert.equal(encryption.algorithm, DEFAULT_ENCRYPTION_ALGORITHM)
 
     await Disposable.use(getSyncedHandler({ url: `file://${dir}` }), noop)
     encryption = JSON.parse(await fs.readFile(`${dir}/encryption.json`, 'utf-8'))
-    expect(encryption.algorithm).toEqual('none')
+    assert.equal(encryption.algorithm, 'none')
   })
 
   it(
@@ -178,9 +180,9 @@ describe('encryption', () => {
       const handler = yield getSyncedHandler({ url: `file://${dir}?encryptionKey="73c1838d7d8a6088ca2317fb5f29cd91"` })
 
       const encryption = JSON.parse(await fs.readFile(`${dir}/encryption.json`, 'utf-8'))
-      expect(encryption.algorithm).toEqual(DEFAULT_ENCRYPTION_ALGORITHM)
+      assert.equal(encryption.algorithm, DEFAULT_ENCRYPTION_ALGORITHM)
       const metadata = JSON.parse(await handler.readFile(`./metadata.json`))
-      expect(metadata.random).toEqual('NOTSORANDOM')
+      assert.equal(metadata.random, 'NOTSORANDOM')
     })
   )
 
@@ -198,9 +200,9 @@ describe('encryption', () => {
 
     // remote is now non empty : can't modify key anymore
     await fs.writeFile(`${dir}/nonempty.json`, 'content')
-    await expect(
+    await assert.rejects(
       Disposable.use(getSyncedHandler({ url: `file://${dir}?encryptionKey="73c1838d7d8a6088ca2317fb5f29cd10"` }), noop)
-    ).rejects.toThrowError()
+    )
   })
 
   it('sync should fail when changing algorithm', async () => {
@@ -213,8 +215,8 @@ describe('encryption', () => {
     // remote is now non empty : can't modify key anymore
     await fs.writeFile(`${dir}/nonempty.json`, 'content')
 
-    await expect(
+    await assert.rejects(
       Disposable.use(getSyncedHandler({ url: `file://${dir}?encryptionKey="73c1838d7d8a6088ca2317fb5f29cd91"` }), noop)
-    ).rejects.toThrowError()
+    )
   })
 })

@xen-orchestra/fs/src/fs.test.js

@@ -1,4 +1,5 @@
-/* eslint-env jest */
+import { after, afterEach, before, beforeEach, describe, it } from 'test'
+import { strict as assert } from 'assert'
 
 import 'dotenv/config'
 import { forOwn, random } from 'lodash'
@@ -53,11 +54,11 @@ handlers.forEach(url => {
       })
     }
 
-    beforeAll(async () => {
+    before(async () => {
       handler = getHandler({ url }).addPrefix(`xo-fs-tests-${Date.now()}`)
       await handler.sync()
     })
-    afterAll(async () => {
+    after(async () => {
       await handler.forget()
       handler = undefined
     })
@@ -72,67 +73,63 @@ handlers.forEach(url => {
 
     describe('#type', () => {
       it('returns the type of the remote', () => {
-        expect(typeof handler.type).toBe('string')
+        assert.equal(typeof handler.type, 'string')
       })
     })
 
     describe('#getInfo()', () => {
       let info
-      beforeAll(async () => {
+      before(async () => {
         info = await handler.getInfo()
       })
 
       it('should return an object with info', async () => {
-        expect(typeof info).toBe('object')
+        assert.equal(typeof info, 'object')
       })
 
       it('should return correct type of attribute', async () => {
         if (info.size !== undefined) {
-          expect(typeof info.size).toBe('number')
+          assert.equal(typeof info.size, 'number')
         }
         if (info.used !== undefined) {
-          expect(typeof info.used).toBe('number')
+          assert.equal(typeof info.used, 'number')
         }
       })
     })
 
     describe('#getSize()', () => {
-      beforeEach(() => handler.outputFile('file', TEST_DATA))
+      before(() => handler.outputFile('file', TEST_DATA))
 
       testWithFileDescriptor('file', 'r', async () => {
-        expect(await handler.getSize('file')).toEqual(TEST_DATA_LEN)
+        assert.equal(await handler.getSize('file'), TEST_DATA_LEN)
       })
     })
 
     describe('#list()', () => {
       it(`should list the content of folder`, async () => {
         await handler.outputFile('file', TEST_DATA)
-        await expect(await handler.list('.')).toEqual(['file'])
+        assert.deepEqual(await handler.list('.'), ['file'])
       })
 
       it('can prepend the directory to entries', async () => {
         await handler.outputFile('dir/file', '')
-        expect(await handler.list('dir', { prependDir: true })).toEqual(['/dir/file'])
-      })
-
-      it('can prepend the directory to entries', async () => {
-        await handler.outputFile('dir/file', '')
-        expect(await handler.list('dir', { prependDir: true })).toEqual(['/dir/file'])
+        assert.deepEqual(await handler.list('dir', { prependDir: true }), ['/dir/file'])
       })
 
       it('throws ENOENT if no such directory', async () => {
-        expect((await rejectionOf(handler.list('dir'))).code).toBe('ENOENT')
+        await handler.rmtree('dir')
+        assert.equal((await rejectionOf(handler.list('dir'))).code, 'ENOENT')
       })
 
       it('can returns empty for missing directory', async () => {
-        expect(await handler.list('dir', { ignoreMissing: true })).toEqual([])
+        assert.deepEqual(await handler.list('dir', { ignoreMissing: true }), [])
       })
     })
 
     describe('#mkdir()', () => {
       it('creates a directory', async () => {
         await handler.mkdir('dir')
-        await expect(await handler.list('.')).toEqual(['dir'])
+        assert.deepEqual(await handler.list('.'), ['dir'])
       })
 
       it('does not throw on existing directory', async () => {
@@ -143,15 +140,15 @@ handlers.forEach(url => {
       it('throws ENOTDIR on existing file', async () => {
         await handler.outputFile('file', '')
         const error = await rejectionOf(handler.mkdir('file'))
-        expect(error.code).toBe('ENOTDIR')
+        assert.equal(error.code, 'ENOTDIR')
       })
     })
 
     describe('#mktree()', () => {
       it('creates a tree of directories', async () => {
         await handler.mktree('dir/dir')
-        await expect(await handler.list('.')).toEqual(['dir'])
-        await expect(await handler.list('dir')).toEqual(['dir'])
+        assert.deepEqual(await handler.list('.'), ['dir'])
+        assert.deepEqual(await handler.list('dir'), ['dir'])
       })
 
       it('does not throw on existing directory', async () => {
@@ -162,26 +159,27 @@ handlers.forEach(url => {
       it('throws ENOTDIR on existing file', async () => {
         await handler.outputFile('dir/file', '')
         const error = await rejectionOf(handler.mktree('dir/file'))
-        expect(error.code).toBe('ENOTDIR')
+        assert.equal(error.code, 'ENOTDIR')
       })
 
       it('throws ENOTDIR on existing file in path', async () => {
         await handler.outputFile('file', '')
         const error = await rejectionOf(handler.mktree('file/dir'))
-        expect(error.code).toBe('ENOTDIR')
+        assert.equal(error.code, 'ENOTDIR')
       })
     })
 
     describe('#outputFile()', () => {
       it('writes data to a file', async () => {
         await handler.outputFile('file', TEST_DATA)
-        expect(await handler.readFile('file')).toEqual(TEST_DATA)
+        assert.deepEqual(await handler.readFile('file'), TEST_DATA)
       })
 
       it('throws on existing files', async () => {
+        await handler.unlink('file')
         await handler.outputFile('file', '')
         const error = await rejectionOf(handler.outputFile('file', ''))
-        expect(error.code).toBe('EEXIST')
+        assert.equal(error.code, 'EEXIST')
       })
 
       it("shouldn't timeout in case of the respect of the parallel execution restriction", async () => {
@@ -192,7 +190,7 @@ handlers.forEach(url => {
     })
 
     describe('#read()', () => {
-      beforeEach(() => handler.outputFile('file', TEST_DATA))
+      before(() => handler.outputFile('file', TEST_DATA))
 
       const start = random(TEST_DATA_LEN)
       const size = random(TEST_DATA_LEN)
@@ -200,8 +198,8 @@ handlers.forEach(url => {
       testWithFileDescriptor('file', 'r', async ({ file }) => {
         const buffer = Buffer.alloc(size)
         const result = await handler.read(file, buffer, start)
-        expect(result.buffer).toBe(buffer)
-        expect(result).toEqual({
+        assert.deepEqual(result.buffer, buffer)
+        assert.deepEqual(result, {
           buffer,
           bytesRead: Math.min(size, TEST_DATA_LEN - start),
         })
@@ -211,12 +209,13 @@ handlers.forEach(url => {
     describe('#readFile', () => {
       it('returns a buffer containing the contents of the file', async () => {
         await handler.outputFile('file', TEST_DATA)
-        expect(await handler.readFile('file')).toEqual(TEST_DATA)
+        assert.deepEqual(await handler.readFile('file'), TEST_DATA)
       })
 
       it('throws on missing file', async () => {
+        await handler.unlink('file')
         const error = await rejectionOf(handler.readFile('file'))
-        expect(error.code).toBe('ENOENT')
+        assert.equal(error.code, 'ENOENT')
       })
     })
 
@@ -225,19 +224,19 @@ handlers.forEach(url => {
         await handler.outputFile('file', TEST_DATA)
         await handler.rename('file', `file2`)
 
-        expect(await handler.list('.')).toEqual(['file2'])
-        expect(await handler.readFile(`file2`)).toEqual(TEST_DATA)
+        assert.deepEqual(await handler.list('.'), ['file2'])
+        assert.deepEqual(await handler.readFile(`file2`), TEST_DATA)
       })
       it(`should rename the file and create dest directory`, async () => {
         await handler.outputFile('file', TEST_DATA)
         await handler.rename('file', `sub/file2`)
 
-        expect(await handler.list('sub')).toEqual(['file2'])
-        expect(await handler.readFile(`sub/file2`)).toEqual(TEST_DATA)
+        assert.deepEqual(await handler.list('sub'), ['file2'])
+        assert.deepEqual(await handler.readFile(`sub/file2`), TEST_DATA)
       })
       it(`should fail with enoent if source file is missing`, async () => {
         const error = await rejectionOf(handler.rename('file', `sub/file2`))
-        expect(error.code).toBe('ENOENT')
+        assert.equal(error.code, 'ENOENT')
       })
     })
 
@@ -245,14 +244,15 @@ handlers.forEach(url => {
       it('should remove an empty directory', async () => {
         await handler.mkdir('dir')
         await handler.rmdir('dir')
-        expect(await handler.list('.')).toEqual([])
+        assert.deepEqual(await handler.list('.'), [])
       })
 
       it(`should throw on non-empty directory`, async () => {
         await handler.outputFile('dir/file', '')
 
         const error = await rejectionOf(handler.rmdir('.'))
-        await expect(error.code).toEqual('ENOTEMPTY')
+        assert.equal(error.code, 'ENOTEMPTY')
+        await handler.unlink('dir/file')
       })
 
       it('does not throw on missing directory', async () => {
@@ -265,7 +265,7 @@ handlers.forEach(url => {
         await handler.outputFile('dir/file', '')
         await handler.rmtree('dir')
 
-        expect(await handler.list('.')).toEqual([])
+        assert.deepEqual(await handler.list('.'), [])
       })
     })
 
@@ -273,9 +273,9 @@ handlers.forEach(url => {
       it('tests the remote appears to be working', async () => {
         const answer = await handler.test()
 
-        expect(answer.success).toBe(true)
-        expect(typeof answer.writeRate).toBe('number')
-        expect(typeof answer.readRate).toBe('number')
+        assert.equal(answer.success, true)
+        assert.equal(typeof answer.writeRate, 'number')
+        assert.equal(typeof answer.readRate, 'number')
       })
     })
 
@@ -284,7 +284,7 @@ handlers.forEach(url => {
         await handler.outputFile('file', TEST_DATA)
         await handler.unlink('file')
 
-        await expect(await handler.list('.')).toEqual([])
+        assert.deepEqual(await handler.list('.'), [])
       })
 
       it('does not throw on missing file', async () => {
@@ -294,6 +294,7 @@ handlers.forEach(url => {
 
     describe('#write()', () => {
       beforeEach(() => handler.outputFile('file', TEST_DATA))
+      afterEach(() => handler.unlink('file'))
 
       const PATCH_DATA_LEN = Math.ceil(TEST_DATA_LEN / 2)
       const PATCH_DATA = unsecureRandomBytes(PATCH_DATA_LEN)
@@ -322,7 +323,7 @@ handlers.forEach(url => {
           describe(title, () => {
             testWithFileDescriptor('file', 'r+', async ({ file }) => {
               await handler.write(file, PATCH_DATA, offset)
-              await expect(await handler.readFile('file')).toEqual(expected)
+              assert.deepEqual(await handler.readFile('file'), expected)
             })
           })
         }
@@ -330,6 +331,7 @@ handlers.forEach(url => {
     })
 
     describe('#truncate()', () => {
+      afterEach(() => handler.unlink('file'))
       forOwn(
         {
           'shrinks file': (() => {
@@ -348,7 +350,7 @@ handlers.forEach(url => {
           it(title, async () => {
             await handler.outputFile('file', TEST_DATA)
             await handler.truncate('file', length)
-            await expect(await handler.readFile('file')).toEqual(expected)
+            assert.deepEqual(await handler.readFile('file'), expected)
           })
         }
       )

@xen-orchestra/lite/package.json

@@ -18,6 +18,7 @@
     "@novnc/novnc": "^1.3.0",
     "@types/d3-time-format": "^4.0.0",
     "@types/lodash-es": "^4.17.6",
+    "@types/marked": "^4.0.8",
     "@vueuse/core": "^9.5.0",
     "@vueuse/math": "^9.5.0",
     "complex-matcher": "^0.7.0",
@@ -25,13 +26,14 @@
     "decorator-synchronized": "^0.6.0",
     "echarts": "^5.3.3",
     "highlight.js": "^11.6.0",
-    "human-format": "^1.0.0",
+    "human-format": "^1.1.0",
+    "iterable-backoff": "^0.1.0",
     "json-rpc-2.0": "^1.3.0",
     "json5": "^2.2.1",
     "limit-concurrency-decorator": "^0.5.0",
     "lodash-es": "^4.17.21",
     "make-error": "^1.3.6",
-    "markdown-it": "^13.0.1",
+    "marked": "^4.2.12",
     "pinia": "^2.0.14",
     "placement.js": "^1.0.0-beta.5",
     "vue": "^3.2.37",

@xen-orchestra/lite/src/App.vue

@@ -1,25 +1,5 @@
 <template>
-  <UiModal
-    v-if="isSslModalOpen"
-    :icon="faServer"
-    color="error"
-    @close="clearUnreachableHostsUrls"
-  >
-    <template #title>{{ $t("unreachable-hosts") }}</template>
-    <template #subtitle>{{ $t("following-hosts-unreachable") }}</template>
-    <p>{{ $t("allow-self-signed-ssl") }}</p>
-    <ul>
-      <li v-for="url in unreachableHostsUrls" :key="url.hostname">
-        <a :href="url.href" rel="noopener" target="_blank">{{ url.href }}</a>
-      </li>
-    </ul>
-    <template #buttons>
-      <UiButton color="success" @click="reload">
-        {{ $t("unreachable-hosts-reload-page") }}
-      </UiButton>
-      <UiButton @click="clearUnreachableHostsUrls">{{ $t("cancel") }}</UiButton>
-    </template>
-  </UiModal>
+  <UnreachableHostsModal />
   <div v-if="!$route.meta.hasStoryNav && !xenApiStore.isConnected">
     <AppLogin />
   </div>
@@ -41,21 +21,14 @@ import AppHeader from "@/components/AppHeader.vue";
 import AppLogin from "@/components/AppLogin.vue";
 import AppNavigation from "@/components/AppNavigation.vue";
 import AppTooltips from "@/components/AppTooltips.vue";
-import UiButton from "@/components/ui/UiButton.vue";
-import UiModal from "@/components/ui/UiModal.vue";
+import UnreachableHostsModal from "@/components/UnreachableHostsModal.vue";
 import { useChartTheme } from "@/composables/chart-theme.composable";
-import { useHostStore } from "@/stores/host.store";
+import { usePoolStore } from "@/stores/pool.store";
 import { useUiStore } from "@/stores/ui.store";
 import { useXenApiStore } from "@/stores/xen-api.store";
-import { faServer } from "@fortawesome/free-solid-svg-icons";
 import { useActiveElement, useMagicKeys, whenever } from "@vueuse/core";
 import { logicAnd } from "@vueuse/math";
-import { difference } from "lodash";
-import { computed, ref, watch, watchEffect } from "vue";
-import { useRoute } from "vue-router";
-
-const unreachableHostsUrls = ref<URL[]>([]);
-const clearUnreachableHostsUrls = () => (unreachableHostsUrls.value = []);
+import { computed } from "vue";
 
 let link = document.querySelector(
   "link[rel~='icon']"
@@ -70,7 +43,7 @@ link.href = favicon;
 document.title = "XO Lite";
 
 const xenApiStore = useXenApiStore();
-const hostStore = useHostStore();
+const { pool } = usePoolStore().subscribe();
 useChartTheme();
 const uiStore = useUiStore();
 
@@ -92,34 +65,14 @@ if (import.meta.env.DEV) {
   );
 }
 
-const route = useRoute();
-
-watchEffect(() => {
-  if (route.meta.hasStoryNav) {
-    return;
-  }
-
-  if (xenApiStore.isConnected) {
-    xenApiStore.init();
-  }
-});
-
-watch(
-  () => hostStore.allRecords,
-  (hosts, previousHosts) => {
-    difference(hosts, previousHosts).forEach((host) => {
-      const url = new URL("http://localhost");
-      url.protocol = window.location.protocol;
-      url.hostname = host.address;
-      fetch(url, { mode: "no-cors" }).catch(() =>
-        unreachableHostsUrls.value.push(url)
-      );
-    });
+whenever(
+  () => pool.value?.$ref,
+  async (poolRef) => {
+    const xenApi = xenApiStore.getXapi();
+    await xenApi.injectWatchEvent(poolRef);
+    await xenApi.startWatch();
   }
 );
-
-const isSslModalOpen = computed(() => unreachableHostsUrls.value.length > 0);
-const reload = () => window.location.reload();
 </script>
 
 <style lang="postcss">

@xen-orchestra/lite/src/assets/base.css

@@ -38,6 +38,11 @@ code * {
   color: var(--color-extra-blue-d20);
 }
 
-.link:active {
+.link:active,
+.link.router-link-active {
   color: var(--color-extra-blue-d40);
 }
+
+.link.router-link-active {
+  text-decoration: underline;
+}

@xen-orchestra/lite/src/assets/reset.css

@@ -12,13 +12,23 @@ html {
   font-family: Poppins, sans-serif;
 }
 
-body, h1, h2, h3, h4, h5, h6, p, ol, ul {
+body,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+p,
+ol,
+ul {
   margin: 0;
   padding: 0;
   font-weight: normal;
 }
 
-ol, ul {
+ol,
+ul {
   list-style: none;
 }
 

@xen-orchestra/lite/src/assets/theme.css

@@ -1,75 +1,85 @@
 :root {
   --color-blue-scale-000: #000000;
-  --color-blue-scale-100: #1A1B38;
-  --color-blue-scale-200: #595A6F;
-  --color-blue-scale-300: #9899A5;
-  --color-blue-scale-400: #E5E5E7;
-  --color-blue-scale-500: #FFFFFF;
+  --color-blue-scale-100: #1a1b38;
+  --color-blue-scale-200: #595a6f;
+  --color-blue-scale-300: #9899a5;
+  --color-blue-scale-400: #e5e5e7;
+  --color-blue-scale-500: #ffffff;
 
-  --color-extra-blue-l60: #D1CEFB;
-  --color-extra-blue-l40: #BBB5F9;
-  --color-extra-blue-l20: #A39DF8;
-  --color-extra-blue-base: #8F84FF;
-  --color-extra-blue-d20: #716AC6;
-  --color-extra-blue-d40: #554F94;
+  --color-extra-blue-l60: #d1cefb;
+  --color-extra-blue-l40: #bbb5f9;
+  --color-extra-blue-l20: #a39df8;
+  --color-extra-blue-base: #8f84ff;
+  --color-extra-blue-d20: #716ac6;
+  --color-extra-blue-d40: #554f94;
   --color-extra-blue-d60: #383563;
 
-  --color-green-infra-l60: #B5DBCA;
-  --color-green-infra-l40: #91C9B0;
-  --color-green-infra-l20: #70B795;
-  --color-green-infra-base: #55A57B;
+  --color-green-infra-l60: #b5dbca;
+  --color-green-infra-l40: #91c9b0;
+  --color-green-infra-l20: #70b795;
+  --color-green-infra-base: #55a57b;
   --color-green-infra-d20: #438463;
-  --color-green-infra-d40: #32634A;
+  --color-green-infra-d40: #32634a;
   --color-green-infra-d60: #214231;
 
-  --color-orange-world-l60: #F2CDA8;
-  --color-orange-world-l40: #EBB57D;
-  --color-orange-world-l20: #E59D56;
-  --color-orange-world-base: #EF7F18;
-  --color-orange-world-d20: #BF6612;
-  --color-orange-world-d40: #864F1F;
-  --color-orange-world-d60: #5A3514;
+  --color-orange-world-l60: #f2cda8;
+  --color-orange-world-l40: #ebb57d;
+  --color-orange-world-l20: #e59d56;
+  --color-orange-world-base: #ef7f18;
+  --color-orange-world-d20: #bf6612;
+  --color-orange-world-d40: #864f1f;
+  --color-orange-world-d60: #5a3514;
 
-  --color-red-vates-l60: #DDA5A7;
-  --color-red-vates-l40: #CE787C;
-  --color-red-vates-l20: #BF4F51;
-  --color-red-vates-base: #BE1621;
-  --color-red-vates-d20: #8E2221;
-  --color-red-vates-d40: #6A1919;
+  --color-red-vates-l60: #dda5a7;
+  --color-red-vates-l40: #ce787c;
+  --color-red-vates-l20: #bf4f51;
+  --color-red-vates-base: #be1621;
+  --color-red-vates-d20: #8e2221;
+  --color-red-vates-d40: #6a1919;
   --color-red-vates-d60: #471010;
 
   --color-grayscale-200: #585757;
 
-  --background-color-primary: #FFFFFF;
-  --background-color-secondary: #F6F6F7;
-  --background-color-extra-blue: #F4F3FE;
-  --background-color-green-infra: #ECF5F2;
-  --background-color-orange-world: #FBF2E9;
-  --background-color-red-vates: #F5E8E9;
+  --background-color-primary: #ffffff;
+  --background-color-secondary: #f6f6f7;
+  --background-color-extra-blue: #f4f3fe;
+  --background-color-green-infra: #ecf5f2;
+  --background-color-orange-world: #fbf2e9;
+  --background-color-red-vates: #f5e8e9;
 
   --shadow-100: 0 0.1rem 0.1rem rgba(20, 20, 30, 0.06);
-  --shadow-200: 0 0.1rem 0.3rem rgba(20, 20, 30, 0.1), 0 0.2rem 0.1rem rgba(20, 20, 30, 0.06), 0 0.1rem 0.1rem rgba(20, 20, 30, 0.08);
-  --shadow-300: 0 0.3rem 0.5rem rgba(20, 20, 30, 0.1), 0 0.1rem 1.8rem rgba(20, 20, 30, 0.06), 0 0.6rem 1.0rem rgba(20, 20, 30, 0.08);
-  --shadow-400: 0 1.1rem 1.5rem rgba(20, 20, 30, 0.1), 0 0.9rem 4.6rem rgba(20, 20, 30, 0.06), 0 2.4rem 3.8rem rgba(20, 20, 30, 0.04);
+  --shadow-200: 0 0.1rem 0.3rem rgba(20, 20, 30, 0.1),
+    0 0.2rem 0.1rem rgba(20, 20, 30, 0.06),
+    0 0.1rem 0.1rem rgba(20, 20, 30, 0.08);
+  --shadow-300: 0 0.3rem 0.5rem rgba(20, 20, 30, 0.1),
+    0 0.1rem 1.8rem rgba(20, 20, 30, 0.06), 0 0.6rem 1rem rgba(20, 20, 30, 0.08);
+  --shadow-400: 0 1.1rem 1.5rem rgba(20, 20, 30, 0.1),
+    0 0.9rem 4.6rem rgba(20, 20, 30, 0.06),
+    0 2.4rem 3.8rem rgba(20, 20, 30, 0.04);
 }
 
 :root.dark {
-  --color-blue-scale-000: #FFFFFF;
-  --color-blue-scale-100: #E5E5E7;
-  --color-blue-scale-200: #9899A5;
-  --color-blue-scale-300: #595A6F;
-  --color-blue-scale-400: #1A1B38;
+  --color-blue-scale-000: #ffffff;
+  --color-blue-scale-100: #e5e5e7;
+  --color-blue-scale-200: #9899a5;
+  --color-blue-scale-300: #595a6f;
+  --color-blue-scale-400: #1a1b38;
   --color-blue-scale-500: #000000;
 
-  --background-color-primary: #14141D;
-  --background-color-secondary: #17182A;
-  --background-color-extra-blue: #35335D;
-  --background-color-green-infra: #243B3D;
+  --background-color-primary: #14141d;
+  --background-color-secondary: #17182a;
+  --background-color-extra-blue: #35335d;
+  --background-color-green-infra: #243b3d;
   --background-color-orange-world: #493328;
-  --background-color-red-vates: #3C1A28;
+  --background-color-red-vates: #3c1a28;
 
   --shadow-100: 0 0.1rem 0.1rem rgba(20, 20, 30, 0.12);
-  --shadow-200: 0 0.1rem 0.3rem rgba(20, 20, 30, 0.2), 0 0.2rem 0.1rem rgba(20, 20, 30, 0.12), 0 0.1rem 0.1rem rgba(20, 20, 30, 0.16);
-  --shadow-300: 0 0.3rem 0.5rem rgba(20, 20, 30, 0.2), 0 0.1rem 1.8rem rgba(20, 20, 30, 0.12), 0 0.6rem 1.0rem rgba(20, 20, 30, 0.16);
-  --shadow-400: 0 1.1rem 1.5rem rgba(20, 20, 30, 0.2), 0 0.9rem 4.6rem rgba(20, 20, 30, 0.12), 0 2.4rem 3.8rem rgba(20, 20, 30, 0.08);
+  --shadow-200: 0 0.1rem 0.3rem rgba(20, 20, 30, 0.2),
+    0 0.2rem 0.1rem rgba(20, 20, 30, 0.12),
+    0 0.1rem 0.1rem rgba(20, 20, 30, 0.16);
+  --shadow-300: 0 0.3rem 0.5rem rgba(20, 20, 30, 0.2),
+    0 0.1rem 1.8rem rgba(20, 20, 30, 0.12), 0 0.6rem 1rem rgba(20, 20, 30, 0.16);
+  --shadow-400: 0 1.1rem 1.5rem rgba(20, 20, 30, 0.2),
+    0 0.9rem 4.6rem rgba(20, 20, 30, 0.12),
+    0 2.4rem 3.8rem rgba(20, 20, 30, 0.08);
 }

@xen-orchestra/lite/src/components/AppMarkdown.vue

@@ -3,10 +3,10 @@
 </template>
 
 <script lang="ts" setup>
-import { type Ref, computed, ref } from "vue";
+import markdown from "@/libs/markdown";
 import { useEventListener } from "@vueuse/core";
 import "highlight.js/styles/github-dark.css";
-import { markdown } from "@/libs/markdown";
+import { computed, type Ref, ref } from "vue";
 
 const rootElement = ref() as Ref<HTMLElement>;
 
@@ -14,7 +14,7 @@ const props = defineProps<{
   content: string;
 }>();
 
-const html = computed(() => markdown.render(props.content ?? ""));
+const html = computed(() => markdown.parse(props.content ?? ""));
 
 useEventListener(
   rootElement,
@@ -96,6 +96,7 @@ useEventListener(
       position: absolute;
       z-index: 1;
       right: 1rem;
+      top: 0.4rem;
       cursor: pointer;
       color: white;
       border: none;

@xen-orchestra/lite/src/components/AppTooltip.vue

@@ -1,15 +1,15 @@
 <template>
   <div v-if="!isDisabled" ref="tooltipElement" class="app-tooltip">
     <span class="triangle" />
-    <span class="label">{{ content }}</span>
+    <span class="label">{{ options.content }}</span>
   </div>
 </template>
 
 <script lang="ts" setup>
-import { isEmpty, isFunction, isString } from "lodash-es";
+import type { TooltipOptions } from "@/stores/tooltip.store";
+import { isString } from "lodash-es";
 import place from "placement.js";
 import { computed, ref, watchEffect } from "vue";
-import type { TooltipOptions } from "@/stores/tooltip.store";
 
 const props = defineProps<{
   target: HTMLElement;
@@ -18,29 +18,13 @@ const props = defineProps<{
 
 const tooltipElement = ref<HTMLElement>();
 
-const content = computed(() =>
-  isString(props.options) ? props.options : props.options.content
+const isDisabled = computed(() =>
+  isString(props.options.content)
+    ? props.options.content.trim() === ""
+    : props.options.content === false
 );
 
-const isDisabled = computed(() => {
-  if (isEmpty(content.value)) {
-    return true;
-  }
-
-  if (isString(props.options)) {
-    return false;
-  }
-
-  if (isFunction(props.options.disabled)) {
-    return props.options.disabled(props.target);
-  }
-
-  return props.options.disabled ?? false;
-});
-
-const placement = computed(() =>
-  isString(props.options) ? "top" : props.options.placement ?? "top"
-);
+const placement = computed(() => props.options.placement ?? "top");
 
 watchEffect(() => {
   if (tooltipElement.value) {

@xen-orchestra/lite/src/components/CollectionFilter.vue

@@ -14,7 +14,12 @@
     </UiActionButton>
   </UiFilterGroup>
 
-  <UiModal v-if="isOpen" :icon="faFilter" @submit.prevent="handleSubmit">
+  <UiModal
+    v-if="isOpen"
+    :icon="faFilter"
+    @submit.prevent="handleSubmit"
+    @close="handleCancel"
+  >
     <div class="rows">
       <CollectionFilterRow
         v-for="(newFilter, index) in newFilters"

@xen-orchestra/lite/src/components/CollectionSorter.vue

@@ -17,7 +17,12 @@
     </UiActionButton>
   </UiFilterGroup>
 
-  <UiModal v-if="isOpen" :icon="faSort" @submit.prevent="handleSubmit">
+  <UiModal
+    v-if="isOpen"
+    :icon="faSort"
+    @submit.prevent="handleSubmit"
+    @close="handleCancel"
+  >
     <div class="form-widgets">
       <FormWidget :label="$t('sort-by')">
         <select v-model="newSortProperty">

@xen-orchestra/lite/src/components/CollectionTable.vue

@@ -18,24 +18,27 @@
     />
   </div>
 
-  <UiTable>
-    <template #header>
-      <td v-if="isSelectable">
-        <input v-model="areAllSelected" type="checkbox" />
-      </td>
-      <slot name="header" />
-    </template>
-
-    <tr v-for="item in filteredAndSortedCollection" :key="item[idProperty]">
-      <td v-if="isSelectable">
-        <input
-          v-model="selected"
-          :value="item[props.idProperty]"
-          type="checkbox"
-        />
-      </td>
-      <slot :item="item" name="row" />
-    </tr>
+  <UiTable vertical-border>
+    <thead>
+      <tr>
+        <td v-if="isSelectable">
+          <input v-model="areAllSelected" type="checkbox" />
+        </td>
+        <slot name="head-row" />
+      </tr>
+    </thead>
+    <tbody>
+      <tr v-for="item in filteredAndSortedCollection" :key="item[idProperty]">
+        <td v-if="isSelectable">
+          <input
+            v-model="selected"
+            :value="item[props.idProperty]"
+            type="checkbox"
+          />
+        </td>
+        <slot :item="item" name="body-row" />
+      </tr>
+    </tbody>
   </UiTable>
 </template>
 

@xen-orchestra/lite/src/components/ObjectNotFoundWrapper.vue

@@ -1,33 +1,31 @@
 <template>
-  <div class="wrapper-spinner" v-if="store.isLoading">
+  <div v-if="!isReady" class="wrapper-spinner">
     <UiSpinner class="spinner" />
   </div>
-  <ObjectNotFoundView :id="id" v-else-if="isRecordNotFound" />
+  <ObjectNotFoundView v-else-if="isRecordNotFound" :id="id" />
   <slot v-else />
 </template>
+
 <script lang="ts" setup>
-import ObjectNotFoundView from "@/views/ObjectNotFoundView.vue";
 import UiSpinner from "@/components/ui/UiSpinner.vue";
-import { useHostStore } from "@/stores/host.store";
-import { useVmStore } from "@/stores/vm.store";
+import ObjectNotFoundView from "@/views/ObjectNotFoundView.vue";
 import { computed } from "vue";
 import { useRouter } from "vue-router";
 
-const storeByType = {
-  vm: useVmStore,
-  host: useHostStore,
-};
+const props = defineProps<{
+  isReady: boolean;
+  uuidChecker: (uuid: string) => boolean;
+  id?: string;
+}>();
 
-const props = defineProps<{ objectType: "vm" | "host"; id?: string }>();
-
-const store = storeByType[props.objectType]();
 const { currentRoute } = useRouter();
 
 const id = computed(
   () => props.id ?? (currentRoute.value.params.uuid as string)
 );
+
 const isRecordNotFound = computed(
-  () => store.isReady && !store.hasRecordByUuid(id.value)
+  () => props.isReady && !props.uuidChecker(id.value)
 );
 </script>
 

@xen-orchestra/lite/src/components/RemoteConsole.vue

@@ -3,9 +3,16 @@
 </template>
 
 <script lang="ts" setup>
-import { onBeforeUnmount, ref, watchEffect } from "vue";
+import { fibonacci } from "iterable-backoff";
+import { computed, onBeforeUnmount, ref, watch, watchEffect } from "vue";
 import VncClient from "@novnc/novnc/core/rfb";
 import { useXenApiStore } from "@/stores/xen-api.store";
+import { promiseTimeout } from "@vueuse/shared";
+
+const N_TOTAL_TRIES = 8;
+const FIBONACCI_MS_ARRAY: number[] = Array.from(
+  fibonacci().toMs().take(N_TOTAL_TRIES)
+);
 
 const props = defineProps<{
   location: string;
@@ -14,37 +21,84 @@ const props = defineProps<{
 
 const vmConsoleContainer = ref<HTMLDivElement>();
 const xenApiStore = useXenApiStore();
-let vncClient: VncClient | undefined;
+const url = computed(() => {
+  if (xenApiStore.currentSessionId == null) {
+    return;
+  }
+  const _url = new URL(props.location);
+  _url.protocol = window.location.protocol === "https:" ? "wss:" : "ws:";
+  _url.searchParams.set("session_id", xenApiStore.currentSessionId);
+  return _url;
+});
 
-const clearVncClient = () => {
-  if (vncClient !== undefined) {
-    if (vncClient._rfbConnectionState !== "disconnected") {
-      vncClient.disconnect();
+let vncClient: VncClient | undefined;
+let nConnectionAttempts = 0;
+
+const handleDisconnectionEvent = () => {
+  clearVncClient();
+
+  if (props.isConsoleAvailable) {
+    nConnectionAttempts++;
+
+    if (nConnectionAttempts > N_TOTAL_TRIES) {
+      console.error(
+        "The number of reconnection attempts has been exceeded for:",
+        props.location
+      );
+      return;
     }
-    vncClient = undefined;
+
+    console.error(
+      `Connection lost for the remote console: ${
+        props.location
+      }. New attempt in ${FIBONACCI_MS_ARRAY[nConnectionAttempts - 1]}ms`
+    );
+    createVncConnection();
   }
 };
+const handleConnectionEvent = () => (nConnectionAttempts = 0);
 
+const clearVncClient = () => {
+  if (vncClient === undefined) {
+    return;
+  }
+
+  vncClient.removeEventListener("disconnect", handleDisconnectionEvent);
+  vncClient.removeEventListener("connect", handleConnectionEvent);
+
+  if (vncClient._rfbConnectionState !== "disconnected") {
+    vncClient.disconnect();
+  }
+
+  vncClient = undefined;
+};
+
+const createVncConnection = async () => {
+  if (nConnectionAttempts !== 0) {
+    await promiseTimeout(FIBONACCI_MS_ARRAY[nConnectionAttempts - 1]);
+  }
+
+  vncClient = new VncClient(vmConsoleContainer.value!, url.value!.toString(), {
+    wsProtocols: ["binary"],
+  });
+  vncClient.scaleViewport = true;
+
+  vncClient.addEventListener("disconnect", handleDisconnectionEvent);
+  vncClient.addEventListener("connect", handleConnectionEvent);
+};
+
+watch(url, clearVncClient);
 watchEffect(() => {
   if (
-    !vmConsoleContainer.value ||
-    !xenApiStore.currentSessionId ||
+    url.value === undefined ||
+    vmConsoleContainer.value === undefined ||
     !props.isConsoleAvailable
   ) {
     return;
   }
 
-  clearVncClient();
-
-  const url = new URL(props.location);
-  url.protocol = window.location.protocol === "https:" ? "wss:" : "ws:";
-  url.searchParams.set("session_id", xenApiStore.currentSessionId);
-
-  vncClient = new VncClient(vmConsoleContainer.value, url.toString(), {
-    wsProtocols: ["binary"],
-  });
-
-  vncClient.scaleViewport = true;
+  nConnectionAttempts = 0;
+  createVncConnection();
 });
 
 onBeforeUnmount(() => {

@xen-orchestra/lite/src/components/UnreachableHostsModal.vue

@@ -0,0 +1,59 @@
+<template>
+  <UiModal
+    v-if="isSslModalOpen"
+    :icon="faServer"
+    color="error"
+    @close="clearUnreachableHostsUrls"
+  >
+    <template #title>{{ $t("unreachable-hosts") }}</template>
+    <div class="description">
+      <p>{{ $t("following-hosts-unreachable") }}</p>
+      <p>{{ $t("allow-self-signed-ssl") }}</p>
+      <ul>
+        <li v-for="url in unreachableHostsUrls" :key="url">
+          <a :href="url" class="link" rel="noopener" target="_blank">{{
+            url
+          }}</a>
+        </li>
+      </ul>
+    </div>
+    <template #buttons>
+      <UiButton color="success" @click="reload">
+        {{ $t("unreachable-hosts-reload-page") }}
+      </UiButton>
+      <UiButton @click="clearUnreachableHostsUrls">{{ $t("cancel") }}</UiButton>
+    </template>
+  </UiModal>
+</template>
+
+<script lang="ts" setup>
+import { faServer } from "@fortawesome/free-solid-svg-icons";
+import UiModal from "@/components/ui/UiModal.vue";
+import UiButton from "@/components/ui/UiButton.vue";
+import { computed, ref, watch } from "vue";
+import { difference } from "lodash";
+import { useHostStore } from "@/stores/host.store";
+
+const { records: hosts } = useHostStore().subscribe();
+const unreachableHostsUrls = ref<Set<string>>(new Set());
+const clearUnreachableHostsUrls = () => unreachableHostsUrls.value.clear();
+const isSslModalOpen = computed(() => unreachableHostsUrls.value.size > 0);
+const reload = () => window.location.reload();
+
+watch(hosts, (nextHosts, previousHosts) => {
+  difference(nextHosts, previousHosts).forEach((host) => {
+    const url = new URL("http://localhost");
+    url.protocol = window.location.protocol;
+    url.hostname = host.address;
+    fetch(url, { mode: "no-cors" }).catch(() =>
+      unreachableHostsUrls.value.add(url.toString())
+    );
+  });
+});
+</script>
+
+<style lang="postcss" scoped>
+.description p {
+  margin: 1rem 0;
+}
+</style>

@xen-orchestra/lite/src/components/component-story/ComponentStory.vue

@@ -19,6 +19,7 @@
           class="preset-tab"
           @click="open"
         >
+          <UiIcon :icon="faSliders" />
           Presets
         </UiTab>
       </template>
@@ -105,6 +106,7 @@ import UiButton from "@/components/ui/UiButton.vue";
 import UiCard from "@/components/ui/UiCard.vue";
 import UiCardTitle from "@/components/ui/UiCardTitle.vue";
 import UiCounter from "@/components/ui/UiCounter.vue";
+import UiIcon from "@/components/ui/icon/UiIcon.vue";
 import UiTab from "@/components/ui/UiTab.vue";
 import UiTabBar from "@/components/ui/UiTabBar.vue";
 import {
@@ -116,6 +118,7 @@ import {
   ModelParam,
   type Param,
 } from "@/libs/story/story-param";
+import { faSliders } from "@fortawesome/free-solid-svg-icons";
 import "highlight.js/styles/github-dark.css";
 import { uniqueId, upperFirst } from "lodash-es";
 import { computed, reactive, ref, watch, watchEffect } from "vue";
@@ -174,8 +177,8 @@ if (propParams.value.length !== 0) {
   selectedTab.value = TAB.SETTINGS;
 }
 
-const propValues = reactive<Record<string, any>>({});
-const settingValues = reactive<Record<string, any>>({});
+const propValues = ref<Record<string, any>>({});
+const settingValues = ref<Record<string, any>>({});
 const eventsLog = ref<
   { id: string; name: string; args: { name: string; value: any }[] }[]
 >([]);
@@ -183,13 +186,13 @@ const unreadEventsCount = ref(0);
 
 const resetProps = () => {
   propParams.value.forEach((param) => {
-    propValues[param.name] = param.getPresetValue();
+    propValues.value[param.name] = param.getPresetValue();
   });
 };
 
 const resetSettings = () => {
   settingParams.value.forEach((param) => {
-    settingValues[param.name] = param.getPresetValue();
+    settingValues.value[param.name] = param.getPresetValue();
   });
 };
 
@@ -234,13 +237,13 @@ const slotProperties = computed(() => {
   const properties: Record<string, any> = {};
 
   propParams.value.forEach(({ name }) => {
-    properties[name] = propValues[name];
+    properties[name] = propValues.value[name];
   });
 
   eventParams.value.forEach((eventParam) => {
     properties[`on${upperFirst(eventParam.name)}`] = (...args: any[]) => {
       if (eventParam.isVModel()) {
-        propValues[eventParam.rawName] = args[0];
+        propValues.value[eventParam.rawName] = args[0];
       }
       const logArgs = Object.keys(eventParam.getArguments()).map(
         (argName, index) => ({
@@ -260,7 +263,7 @@ const slotSettings = computed(() => {
   const result: Record<string, any> = {};
 
   settingParams.value.forEach(({ name }) => {
-    result[name] = settingValues[name];
+    result[name] = settingValues.value[name];
   });
 
   return result;
@@ -284,13 +287,13 @@ const applyPreset = (preset: {
 }) => {
   if (preset.props !== undefined) {
     Object.entries(preset.props).forEach(([name, value]) => {
-      propValues[name] = value;
+      propValues.value[name] = value;
     });
   }
 
   if (preset.settings !== undefined) {
     Object.entries(preset.settings).forEach(([name, value]) => {
-      settingValues[name] = value;
+      settingValues.value[name] = value;
     });
   }
 };

@xen-orchestra/lite/src/components/component-story/StorySettingParams.vue

@@ -2,7 +2,7 @@
   <StoryParamsTable>
     <thead>
       <tr>
-        <th>Prop</th>
+        <th>Setting</th>
         <th><!--Widget--></th>
         <th>Help</th>
       </tr>

@xen-orchestra/lite/src/components/infra/InfraHostItem.vue

@@ -1,12 +1,5 @@
 <template>
-  <li
-    v-if="host"
-    class="infra-host-item"
-    v-tooltip="{
-      content: host.name_label,
-      disabled: isTooltipDisabled,
-    }"
-  >
+  <li v-if="host !== undefined" class="infra-host-item">
     <InfraItemLabel
       :active="isCurrentHost"
       :icon="faServer"
@@ -15,10 +8,10 @@
       {{ host.name_label || "(Host)" }}
       <template #actions>
         <InfraAction
-          :icon="faStar"
-          class="master-icon"
           v-if="isPoolMaster"
           v-tooltip="'Master'"
+          :icon="faStar"
+          class="master-icon"
         />
         <InfraAction
           :icon="isExpanded ? faAngleDown : faAngleUp"
@@ -32,8 +25,13 @@
 </template>
 
 <script lang="ts" setup>
-import { computed } from "vue";
+import InfraAction from "@/components/infra/InfraAction.vue";
+import InfraItemLabel from "@/components/infra/InfraItemLabel.vue";
+import InfraVmList from "@/components/infra/InfraVmList.vue";
 import { vTooltip } from "@/directives/tooltip.directive";
+import { useHostStore } from "@/stores/host.store";
+import { usePoolStore } from "@/stores/pool.store";
+import { useUiStore } from "@/stores/ui.store";
 import {
   faAngleDown,
   faAngleUp,
@@ -41,25 +39,18 @@ import {
   faStar,
 } from "@fortawesome/free-solid-svg-icons";
 import { useToggle } from "@vueuse/core";
-import InfraAction from "@/components/infra/InfraAction.vue";
-import InfraItemLabel from "@/components/infra/InfraItemLabel.vue";
-import InfraVmList from "@/components/infra/InfraVmList.vue";
-import { hasEllipsis } from "@/libs/utils";
-import { useHostStore } from "@/stores/host.store";
-import { usePoolStore } from "@/stores/pool.store";
-import { useUiStore } from "@/stores/ui.store";
+import { computed } from "vue";
 
 const props = defineProps<{
   hostOpaqueRef: string;
 }>();
 
-const hostStore = useHostStore();
-const host = computed(() => hostStore.getRecord(props.hostOpaqueRef));
+const { getByOpaqueRef } = useHostStore().subscribe();
+const host = computed(() => getByOpaqueRef(props.hostOpaqueRef));
 
-const poolStore = usePoolStore();
-const isPoolMaster = computed(
-  () => poolStore.pool?.master === props.hostOpaqueRef
-);
+const { pool } = usePoolStore().subscribe();
+
+const isPoolMaster = computed(() => pool.value?.master === props.hostOpaqueRef);
 
 const uiStore = useUiStore();
 
@@ -67,17 +58,16 @@ const isCurrentHost = computed(
   () => props.hostOpaqueRef === uiStore.currentHostOpaqueRef
 );
 const [isExpanded, toggle] = useToggle(true);
-
-const isTooltipDisabled = (target: HTMLElement) =>
-  !hasEllipsis(target.querySelector(".text"));
 </script>
 
 <style lang="postcss" scoped>
-.infra-host-item:deep(.link) {
+.infra-host-item:deep(.link),
+.infra-host-item:deep(.link-placeholder) {
   padding-left: 3rem;
 }
 
-.infra-vm-list:deep(.link) {
+.infra-vm-list:deep(.link),
+.infra-vm-list:deep(.link-placeholder) {
   padding-left: 4.5rem;
 }
 

@xen-orchestra/lite/src/components/infra/InfraHostList.vue

@@ -1,26 +1,24 @@
 <template>
   <ul class="infra-host-list">
-    <li v-if="isLoading">{{ $t("loading-hosts") }}</li>
-    <li v-else-if="hasError" class="text-error">
+    <li v-if="hasError" class="text-error">
       {{ $t("error-no-data") }}
     </li>
+    <li v-else-if="!isReady">{{ $t("loading-hosts") }}</li>
     <template v-else>
       <InfraHostItem
-        v-for="opaqueRef in opaqueRefs"
-        :key="opaqueRef"
-        :host-opaque-ref="opaqueRef"
+        v-for="host in hosts"
+        :key="host.$ref"
+        :host-opaque-ref="host.$ref"
       />
     </template>
   </ul>
 </template>
 
 <script lang="ts" setup>
-import { storeToRefs } from "pinia";
 import InfraHostItem from "@/components/infra/InfraHostItem.vue";
 import { useHostStore } from "@/stores/host.store";
 
-const hostStore = useHostStore();
-const { hasError, isLoading, opaqueRefs } = storeToRefs(hostStore);
+const { records: hosts, isReady, hasError } = useHostStore().subscribe();
 </script>
 
 <style lang="postcss" scoped>

@xen-orchestra/lite/src/components/infra/InfraItemLabel.vue

@@ -7,9 +7,9 @@
       class="infra-item-label"
       v-bind="$attrs"
     >
-      <a :href="href" class="link" @click="navigate">
+      <a :href="href" class="link" @click="navigate" v-tooltip="hasTooltip">
         <UiIcon :icon="icon" class="icon" />
-        <div class="text">
+        <div ref="textElement" class="text">
           <slot />
         </div>
       </a>
@@ -22,7 +22,10 @@
 
 <script lang="ts" setup>
 import UiIcon from "@/components/ui/icon/UiIcon.vue";
+import { vTooltip } from "@/directives/tooltip.directive";
+import { hasEllipsis } from "@/libs/utils";
 import type { IconDefinition } from "@fortawesome/fontawesome-common-types";
+import { computed, ref } from "vue";
 import type { RouteLocationRaw } from "vue-router";
 
 defineProps<{
@@ -30,6 +33,9 @@ defineProps<{
   route: RouteLocationRaw;
   active?: boolean;
 }>();
+
+const textElement = ref<HTMLElement>();
+const hasTooltip = computed(() => hasEllipsis(textElement.value));
 </script>
 
 <style lang="postcss" scoped>

@xen-orchestra/lite/src/components/infra/InfraPoolList.vue

@@ -1,12 +1,12 @@
 <template>
   <ul class="infra-pool-list">
-    <InfraLoadingItem
-      v-if="isLoading || pool === undefined"
-      :icon="faBuilding"
-    />
-    <li v-else-if="hasError" class="text-error">
+    <li v-if="hasError" class="text-error">
       {{ $t("error-no-data") }}
     </li>
+    <InfraLoadingItem
+      v-else-if="!isReady || pool === undefined"
+      :icon="faBuilding"
+    />
     <li v-else class="infra-pool-item">
       <InfraItemLabel
         :icon="faBuilding"
@@ -24,16 +24,14 @@
 </template>
 
 <script lang="ts" setup>
-import { storeToRefs } from "pinia";
-import { faBuilding } from "@fortawesome/free-regular-svg-icons";
 import InfraHostList from "@/components/infra/InfraHostList.vue";
 import InfraItemLabel from "@/components/infra/InfraItemLabel.vue";
 import InfraLoadingItem from "@/components/infra/InfraLoadingItem.vue";
 import InfraVmList from "@/components/infra/InfraVmList.vue";
 import { usePoolStore } from "@/stores/pool.store";
+import { faBuilding } from "@fortawesome/free-regular-svg-icons";
 
-const poolStore = usePoolStore();
-const { hasError, isLoading, pool } = storeToRefs(poolStore);
+const { isReady, hasError, pool } = usePoolStore().subscribe();
 </script>
 
 <style lang="postcss" scoped>
@@ -42,7 +40,8 @@ const { hasError, isLoading, pool } = storeToRefs(poolStore);
   font-weight: 500;
 }
 
-.infra-vm-list:deep(.link) {
+.infra-vm-list:deep(.link),
+.infra-vm-list:deep(.link-placeholder) {
   padding-left: 3rem;
 }
 

@xen-orchestra/lite/src/components/infra/InfraVmItem.vue

@@ -1,12 +1,5 @@
 <template>
-  <li
-    ref="rootElement"
-    class="infra-vm-item"
-    v-tooltip="{
-      content: vm.name_label,
-      disabled: isTooltipDisabled,
-    }"
-  >
+  <li v-if="vm !== undefined" ref="rootElement" class="infra-vm-item">
     <InfraItemLabel
       v-if="isVisible"
       :icon="faDisplay"
@@ -15,7 +8,7 @@
       {{ vm.name_label || "(VM)" }}
       <template #actions>
         <InfraAction>
-          <PowerStateIcon :state="vm?.power_state" />
+          <PowerStateIcon :state="vm.power_state" />
         </InfraAction>
       </template>
     </InfraItemLabel>
@@ -23,20 +16,20 @@
 </template>
 
 <script lang="ts" setup>
-import { computed, ref } from "vue";
-import { vTooltip } from "@/directives/tooltip.directive";
-import { faDisplay } from "@fortawesome/free-solid-svg-icons";
-import { useIntersectionObserver } from "@vueuse/core";
-import PowerStateIcon from "@/components/PowerStateIcon.vue";
 import InfraAction from "@/components/infra/InfraAction.vue";
 import InfraItemLabel from "@/components/infra/InfraItemLabel.vue";
-import { hasEllipsis } from "@/libs/utils";
+import PowerStateIcon from "@/components/PowerStateIcon.vue";
 import { useVmStore } from "@/stores/vm.store";
+import { faDisplay } from "@fortawesome/free-solid-svg-icons";
+import { useIntersectionObserver } from "@vueuse/core";
+import { computed, ref } from "vue";
 
 const props = defineProps<{
   vmOpaqueRef: string;
 }>();
 
+const { getByOpaqueRef } = useVmStore().subscribe();
+const vm = computed(() => getByOpaqueRef(props.vmOpaqueRef));
 const rootElement = ref();
 const isVisible = ref(false);
 
@@ -46,13 +39,6 @@ const { stop } = useIntersectionObserver(rootElement, ([entry]) => {
     stop();
   }
 });
-
-const vmStore = useVmStore();
-
-const vm = computed(() => vmStore.getRecord(props.vmOpaqueRef));
-
-const isTooltipDisabled = (target: HTMLElement) =>
-  !hasEllipsis(target.querySelector(".text"));
 </script>
 
 <style lang="postcss" scoped>

@xen-orchestra/lite/src/components/infra/InfraVmList.vue

@@ -1,38 +1,32 @@
 <template>
   <ul class="infra-vm-list">
-    <template v-if="isLoading">
-      <InfraLoadingItem v-for="i in 3" :icon="faDisplay" :key="i" />
+    <li v-if="hasError" class="text-error">{{ $t("error-no-data") }}</li>
+    <template v-else-if="!isReady">
+      <InfraLoadingItem v-for="i in 3" :key="i" :icon="faDisplay" />
     </template>
-    <p class="text-error" v-else-if="hasError">{{ $t("error-no-data") }}</p>
-    <InfraVmItem
-      v-else
-      v-for="vmOpaqueRef in vmOpaqueRefs"
-      :key="vmOpaqueRef"
-      :vm-opaque-ref="vmOpaqueRef"
-    />
+    <InfraVmItem v-for="vm in vms" :key="vm.$ref" :vm-opaque-ref="vm.$ref" />
   </ul>
 </template>
 
 <script lang="ts" setup>
-import { storeToRefs } from "pinia";
-import { computed } from "vue";
-import { faDisplay } from "@fortawesome/free-solid-svg-icons";
 import InfraLoadingItem from "@/components/infra/InfraLoadingItem.vue";
 import InfraVmItem from "@/components/infra/InfraVmItem.vue";
 import { useVmStore } from "@/stores/vm.store";
+import { faDisplay } from "@fortawesome/free-solid-svg-icons";
+import { computed } from "vue";
 
 const props = defineProps<{
   hostOpaqueRef?: string;
 }>();
 
-const vmStore = useVmStore();
-const { hasError, isLoading, opaqueRefsByHostRef } = storeToRefs(vmStore);
-const vmOpaqueRefs = computed(() =>
-  opaqueRefsByHostRef.value.get(props.hostOpaqueRef ?? "OpaqueRef:NULL")
+const { isReady, recordsByHostRef, hasError } = useVmStore().subscribe();
+
+const vms = computed(() =>
+  recordsByHostRef.value.get(props.hostOpaqueRef ?? "OpaqueRef:NULL")
 );
 </script>
 
-<style scoped lang="postcss">
+<style lang="postcss" scoped>
 .text-error {
   padding-left: 3rem;
   font-weight: 700;

@xen-orchestra/lite/src/components/pool/PoolHeader.vue

@@ -10,6 +10,7 @@ import { faBuilding } from "@fortawesome/free-regular-svg-icons";
 import TitleBar from "@/components/TitleBar.vue";
 import { usePoolStore } from "@/stores/pool.store";
 
-const poolStore = usePoolStore();
-const name = computed(() => poolStore.pool?.name_label ?? "...");
+const { pool } = usePoolStore().subscribe();
+
+const name = computed(() => pool.value?.name_label ?? "...");
 </script>

@xen-orchestra/lite/src/components/pool/PoolTabBar.vue

@@ -1,43 +1,39 @@
 <template>
   <UiTabBar :disabled="!isReady">
-    <RouterTab :to="{ name: 'pool.dashboard', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.dashboard', params: { uuid: pool?.uuid } }">
       {{ $t("dashboard") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.alarms', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.alarms', params: { uuid: pool?.uuid } }">
       {{ $t("alarms") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.stats', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.stats', params: { uuid: pool?.uuid } }">
       {{ $t("stats") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.system', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.system', params: { uuid: pool?.uuid } }">
       {{ $t("system") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.network', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.network', params: { uuid: pool?.uuid } }">
       {{ $t("network") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.storage', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.storage', params: { uuid: pool?.uuid } }">
       {{ $t("storage") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.tasks', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.tasks', params: { uuid: pool?.uuid } }">
       {{ $t("tasks") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.hosts', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.hosts', params: { uuid: pool?.uuid } }">
       {{ $t("hosts") }}
     </RouterTab>
-    <RouterTab :to="{ name: 'pool.vms', params: { uuid: poolUuid } }">
+    <RouterTab :to="{ name: 'pool.vms', params: { uuid: pool?.uuid } }">
       {{ $t("vms") }}
     </RouterTab>
   </UiTabBar>
 </template>
 
 <script lang="ts" setup>
-import { storeToRefs } from "pinia";
-import { computed } from "vue";
 import RouterTab from "@/components/RouterTab.vue";
 import UiTabBar from "@/components/ui/UiTabBar.vue";
 import { usePoolStore } from "@/stores/pool.store";
 
-const poolStore = usePoolStore();
-const { pool, isReady } = storeToRefs(poolStore);
-const poolUuid = computed(() => pool.value?.uuid);
+const { pool, isReady } = usePoolStore().subscribe();
 </script>