feat(xo-server/rest-api): expose /vms/:id/vdis

But we are loosing VBDs info which is not ideal.

@xen-orchestra/backups/RemoteAdapter.mjs

@@ -191,14 +191,13 @@ export class RemoteAdapter {
   // check if we will be allowed to merge a a vhd created in this adapter
   // with the vhd at path `path`
   async isMergeableParent(packedParentUid, path) {
-    return await Disposable.use(VhdSynthetic.fromVhdChain(this.handler, path), vhd => {
+    return await Disposable.use(openVhd(this.handler, path), vhd => {
       // this baseUuid is not linked with this vhd
       if (!vhd.footer.uuid.equals(packedParentUid)) {
         return false
       }
 
-      // check if all the chain is composed of vhd directory
-      const isVhdDirectory = vhd.checkVhdsClass(VhdDirectory)
+      const isVhdDirectory = vhd instanceof VhdDirectory
       return isVhdDirectory
         ? this.useVhdDirectory() && this.#getCompressionType() === vhd.compressionType
         : !this.useVhdDirectory()

@xen-orchestra/backups/_runners/_vmRunners/IncrementalRemote.mjs

@@ -2,7 +2,6 @@ import { asyncEach } from '@vates/async-each'
 import { decorateMethodsWith } from '@vates/decorate-with'
 import { defer } from 'golike-defer'
 import assert from 'node:assert'
-import * as UUID from 'uuid'
 import isVhdDifferencingDisk from 'vhd-lib/isVhdDifferencingDisk.js'
 import mapValues from 'lodash/mapValues.js'
 
@@ -10,48 +9,11 @@ import { AbstractRemote } from './_AbstractRemote.mjs'
 import { forkDeltaExport } from './_forkDeltaExport.mjs'
 import { IncrementalRemoteWriter } from '../_writers/IncrementalRemoteWriter.mjs'
 import { Task } from '../../Task.mjs'
-import { Disposable } from 'promise-toolbox'
-import { openVhd } from 'vhd-lib'
-import { getVmBackupDir } from '../../_getVmBackupDir.mjs'
 
 class IncrementalRemoteVmBackupRunner extends AbstractRemote {
   _getRemoteWriter() {
     return IncrementalRemoteWriter
   }
-  async _selectBaseVm(metadata) {
-    // for each disk , get the parent
-    const baseUuidToSrcVdi = new Map()
-
-    // no previous backup for a base( =key) backup
-    if (metadata.isBase) {
-      return
-    }
-    await asyncEach(Object.entries(metadata.vdis), async ([id, vdi]) => {
-      const isDifferencing = metadata.isVhdDifferencing[`${id}.vhd`]
-      if (isDifferencing) {
-        const vmDir = getVmBackupDir(metadata.vm.uuid)
-        const path = `${vmDir}/${metadata.vhds[id]}`
-        // don't catch error : we can't recover if the source vhd are missing
-        await Disposable.use(openVhd(this._sourceRemoteAdapter._handler, path), vhd => {
-          baseUuidToSrcVdi.set(UUID.stringify(vhd.header.parentUuid), vdi.$snapshot_of$uuid)
-        })
-      }
-    })
-
-    const presentBaseVdis = new Map(baseUuidToSrcVdi)
-    await this._callWriters(
-      writer => presentBaseVdis.size !== 0 && writer.checkBaseVdis(presentBaseVdis),
-      'writer.checkBaseVdis()',
-      false
-    )
-    // check if the parent vdi are present in all the remotes
-    baseUuidToSrcVdi.forEach((srcVdiUuid, baseUuid) => {
-      if (!presentBaseVdis.has(baseUuid)) {
-        throw new Error(`Missing vdi ${baseUuid} which is a base for a delta`)
-      }
-    })
-    // yeah , let's go
-  }
   async _run($defer) {
     const transferList = await this._computeTransferList(({ mode }) => mode === 'delta')
     await this._callWriters(async writer => {
@@ -64,7 +26,7 @@ class IncrementalRemoteVmBackupRunner extends AbstractRemote {
     if (transferList.length > 0) {
       for (const metadata of transferList) {
         assert.strictEqual(metadata.mode, 'delta')
-        await this._selectBaseVm(metadata)
+
         await this._callWriters(writer => writer.prepare({ isBase: metadata.isBase }), 'writer.prepare()')
         const incrementalExport = await this._sourceRemoteAdapter.readIncrementalVmBackup(metadata, undefined, {
           useChain: false,
@@ -88,17 +50,6 @@ class IncrementalRemoteVmBackupRunner extends AbstractRemote {
             }),
           'writer.transfer()'
         )
-        // this will update parent name with the needed alias
-        await this._callWriters(
-          writer =>
-            writer.updateUuidAndChain({
-              isVhdDifferencing,
-              timestamp: metadata.timestamp,
-              vdis: incrementalExport.vdis,
-            }),
-          'writer.updateUuidAndChain()'
-        )
-
         await this._callWriters(writer => writer.cleanup(), 'writer.cleanup()')
         // for healthcheck
         this._tags = metadata.vm.tags

@xen-orchestra/backups/_runners/_vmRunners/IncrementalXapi.mjs

@@ -78,18 +78,6 @@ export const IncrementalXapi = class IncrementalXapiVmBackupRunner extends Abstr
       'writer.transfer()'
     )
 
-    // we want to control the uuid of the vhd in the chain
-    // and ensure they are correctly chained
-    await this._callWriters(
-      writer =>
-        writer.updateUuidAndChain({
-          isVhdDifferencing,
-          timestamp,
-          vdis: deltaExport.vdis,
-        }),
-      'writer.updateUuidAndChain()'
-    )
-
     this._baseVm = exportedVm
 
     if (baseVm !== undefined) {
@@ -145,7 +133,7 @@ export const IncrementalXapi = class IncrementalXapiVmBackupRunner extends Abstr
       ])
       const srcVdi = srcVdis[snapshotOf]
       if (srcVdi !== undefined) {
-        baseUuidToSrcVdi.set(baseUuid, srcVdi.uuid)
+        baseUuidToSrcVdi.set(baseUuid, srcVdi)
       } else {
         debug('ignore snapshot VDI because no longer present on VM', {
           vdi: baseUuid,
@@ -166,18 +154,18 @@ export const IncrementalXapi = class IncrementalXapiVmBackupRunner extends Abstr
     }
 
     const fullVdisRequired = new Set()
-    baseUuidToSrcVdi.forEach((srcVdiUuid, baseUuid) => {
+    baseUuidToSrcVdi.forEach((srcVdi, baseUuid) => {
       if (presentBaseVdis.has(baseUuid)) {
         debug('found base VDI', {
           base: baseUuid,
-          vdi: srcVdiUuid,
+          vdi: srcVdi.uuid,
         })
       } else {
         debug('missing base VDI', {
           base: baseUuid,
-          vdi: srcVdiUuid,
+          vdi: srcVdi.uuid,
         })
-        fullVdisRequired.add(srcVdiUuid)
+        fullVdisRequired.add(srcVdi.uuid)
       }
     })
 

@xen-orchestra/backups/_runners/_writers/IncrementalRemoteWriter.mjs

@@ -1,15 +1,17 @@
 import assert from 'node:assert'
 import mapValues from 'lodash/mapValues.js'
+import ignoreErrors from 'promise-toolbox/ignoreErrors'
 import { asyncEach } from '@vates/async-each'
 import { asyncMap } from '@xen-orchestra/async-map'
-import { chainVhd, openVhd } from 'vhd-lib'
+import { chainVhd, checkVhdChain, openVhd, VhdAbstract } from 'vhd-lib'
 import { createLogger } from '@xen-orchestra/log'
 import { decorateClass } from '@vates/decorate-with'
 import { defer } from 'golike-defer'
-import { dirname, basename } from 'node:path'
+import { dirname } from 'node:path'
 
 import { formatFilenameDate } from '../../_filenameDate.mjs'
 import { getOldEntries } from '../../_getOldEntries.mjs'
+import { TAG_BASE_DELTA } from '../../_incrementalVm.mjs'
 import { Task } from '../../Task.mjs'
 
 import { MixinRemoteWriter } from './_MixinRemoteWriter.mjs'
@@ -21,45 +23,42 @@ import { Disposable } from 'promise-toolbox'
 const { warn } = createLogger('xo:backups:DeltaBackupWriter')
 
 export class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrementalWriter) {
-  #parentVdiPaths
-  #vhds
   async checkBaseVdis(baseUuidToSrcVdi) {
-    this.#parentVdiPaths = {}
     const { handler } = this._adapter
     const adapter = this._adapter
 
     const vdisDir = `${this._vmBackupDir}/vdis/${this._job.id}`
 
-    await asyncMap(baseUuidToSrcVdi, async ([baseUuid, srcVdiUuid]) => {
-      let parentDestPath
-      const vhdDir = `${vdisDir}/${srcVdiUuid}`
+    await asyncMap(baseUuidToSrcVdi, async ([baseUuid, srcVdi]) => {
+      let found = false
       try {
-        const vhds = await handler.list(vhdDir, {
+        const vhds = await handler.list(`${vdisDir}/${srcVdi.uuid}`, {
           filter: _ => _[0] !== '.' && _.endsWith('.vhd'),
           ignoreMissing: true,
           prependDir: true,
         })
         const packedBaseUuid = packUuid(baseUuid)
-        // the last one is probably the right one
-
-        for (let i = vhds.length - 1; i >= 0 && parentDestPath === undefined; i--) {
-          const path = vhds[i]
+        await asyncMap(vhds, async path => {
           try {
-            if (await adapter.isMergeableParent(packedBaseUuid, path)) {
-              parentDestPath = path
-            }
+            await checkVhdChain(handler, path)
+            // Warning, this should not be written as found = found || await adapter.isMergeableParent(packedBaseUuid, path)
+            //
+            // since all the checks of a path are done in parallel, found would be containing
+            // only the last answer of isMergeableParent which is probably not the right one
+            // this led to the support tickets  https://help.vates.fr/#ticket/zoom/4751 , 4729, 4665 and 4300
+
+            const isMergeable = await adapter.isMergeableParent(packedBaseUuid, path)
+            found = found || isMergeable
           } catch (error) {
             warn('checkBaseVdis', { error })
+            await ignoreErrors.call(VhdAbstract.unlink(handler, path))
           }
-        }
+        })
       } catch (error) {
         warn('checkBaseVdis', { error })
       }
-      // no usable parent => the runner will have to decide to fall back to a full or stop backup
-      if (parentDestPath === undefined) {
+      if (!found) {
         baseUuidToSrcVdi.delete(baseUuid)
-      } else {
-        this.#parentVdiPaths[vhdDir] = parentDestPath
       }
     })
   }
@@ -124,44 +123,6 @@ export class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrement
     }
   }
 
-  async updateUuidAndChain({ isVhdDifferencing, vdis }) {
-    assert.notStrictEqual(
-      this.#vhds,
-      undefined,
-      '_transfer must be called before updateUuidAndChain for incremental backups'
-    )
-
-    const parentVdiPaths = this.#parentVdiPaths
-    const { handler } = this._adapter
-    const vhds = this.#vhds
-    await asyncEach(Object.entries(vdis), async ([id, vdi]) => {
-      const isDifferencing = isVhdDifferencing[`${id}.vhd`]
-      const path = `${this._vmBackupDir}/${vhds[id]}`
-      if (isDifferencing) {
-        assert.notStrictEqual(
-          parentVdiPaths,
-          'checkbasevdi must be called before updateUuidAndChain for incremental backups'
-        )
-        const parentPath = parentVdiPaths[dirname(path)]
-        // we are in a incremental backup
-        // we already computed the chain in checkBaseVdis
-        assert.notStrictEqual(parentPath, undefined, 'A differential VHD must have a parent')
-        // forbid any kind of loop
-        assert.ok(basename(parentPath) < basename(path), `vhd must be sorted to be chained`)
-        await chainVhd(handler, parentPath, handler, path)
-      }
-
-      // set the correct UUID in the VHD if needed
-      await Disposable.use(openVhd(handler, path), async vhd => {
-        if (!vhd.footer.uuid.equals(packUuid(vdi.uuid))) {
-          vhd.footer.uuid = packUuid(vdi.uuid)
-          await vhd.readBlockAllocationTable() // required by writeFooter()
-          await vhd.writeFooter()
-        }
-      })
-    })
-  }
-
   async _deleteOldEntries() {
     const adapter = this._adapter
     const oldEntries = this._oldEntries
@@ -180,10 +141,16 @@ export class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrement
     const jobId = job.id
     const handler = adapter.handler
 
+    let metadataContent = await this._isAlreadyTransferred(timestamp)
+    if (metadataContent !== undefined) {
+      // skip backup while being vigilant to not stuck the forked stream
+      Task.info('This backup has already been transfered')
+      Object.values(deltaExport.streams).forEach(stream => stream.destroy())
+      return { size: 0 }
+    }
+
     const basename = formatFilenameDate(timestamp)
-    // update this.#vhds before eventually skipping transfer, so that
-    // updateUuidAndChain has all the mandatory data
-    const vhds = (this.#vhds = mapValues(
+    const vhds = mapValues(
       deltaExport.vdis,
       vdi =>
         `vdis/${jobId}/${
@@ -193,15 +160,7 @@ export class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrement
               vdi.uuid
             : vdi.$snapshot_of$uuid
         }/${adapter.getVhdFileName(basename)}`
-    ))
-
-    let metadataContent = await this._isAlreadyTransferred(timestamp)
-    if (metadataContent !== undefined) {
-      // skip backup while being vigilant to not stuck the forked stream
-      Task.info('This backup has already been transfered')
-      Object.values(deltaExport.streams).forEach(stream => stream.destroy())
-      return { size: 0 }
-    }
+    )
 
     metadataContent = {
       isVhdDifferencing,
@@ -217,13 +176,38 @@ export class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrement
       vm,
       vmSnapshot,
     }
-
     const { size } = await Task.run({ name: 'transfer' }, async () => {
       let transferSize = 0
       await asyncEach(
-        Object.keys(deltaExport.vdis),
-        async id => {
+        Object.entries(deltaExport.vdis),
+        async ([id, vdi]) => {
           const path = `${this._vmBackupDir}/${vhds[id]}`
+
+          const isDifferencing = isVhdDifferencing[`${id}.vhd`]
+          let parentPath
+          if (isDifferencing) {
+            const vdiDir = dirname(path)
+            parentPath = (
+              await handler.list(vdiDir, {
+                filter: filename => filename[0] !== '.' && filename.endsWith('.vhd'),
+                prependDir: true,
+              })
+            )
+              .sort()
+              .pop()
+
+            assert.notStrictEqual(
+              parentPath,
+              undefined,
+              `missing parent of ${id} in ${dirname(path)}, looking for ${vdi.other_config[TAG_BASE_DELTA]}`
+            )
+
+            parentPath = parentPath.slice(1) // remove leading slash
+
+            // TODO remove when this has been done before the export
+            await checkVhd(handler, parentPath)
+          }
+
           // don't write it as transferSize += await async function
           // since i += await asyncFun lead to race condition
           // as explained : https://eslint.org/docs/latest/rules/require-atomic-updates
@@ -235,6 +219,17 @@ export class IncrementalRemoteWriter extends MixinRemoteWriter(AbstractIncrement
             writeBlockConcurrency: this._config.writeBlockConcurrency,
           })
           transferSize += transferSizeOneDisk
+
+          if (isDifferencing) {
+            await chainVhd(handler, parentPath, handler, path)
+          }
+
+          // set the correct UUID in the VHD
+          await Disposable.use(openVhd(handler, path), async vhd => {
+            vhd.footer.uuid = packUuid(vdi.uuid)
+            await vhd.readBlockAllocationTable() // required by writeFooter()
+            await vhd.writeFooter()
+          })
         },
         {
           concurrency: settings.diskPerVmConcurrency,

@xen-orchestra/backups/_runners/_writers/IncrementalXapiWriter.mjs

@@ -1,4 +1,3 @@
-import assert from 'node:assert'
 import { asyncMap, asyncMapSettled } from '@xen-orchestra/async-map'
 import ignoreErrors from 'promise-toolbox/ignoreErrors'
 import { formatDateTime } from '@xen-orchestra/xapi'
@@ -15,7 +14,6 @@ import find from 'lodash/find.js'
 
 export class IncrementalXapiWriter extends MixinXapiWriter(AbstractIncrementalWriter) {
   async checkBaseVdis(baseUuidToSrcVdi, baseVm) {
-    assert.notStrictEqual(baseVm, undefined)
     const sr = this._sr
     const replicatedVm = listReplicatedVms(sr.$xapi, this._job.id, sr.uuid, this._vmUuid).find(
       vm => vm.other_config[TAG_COPY_SRC] === baseVm.uuid
@@ -38,9 +36,7 @@ export class IncrementalXapiWriter extends MixinXapiWriter(AbstractIncrementalWr
       }
     }
   }
-  updateUuidAndChain() {
-    // nothing to do, the chaining is not modified in this case
-  }
+
   prepare({ isFull }) {
     // create the task related to this export and ensure all methods are called in this context
     const task = new Task({

@xen-orchestra/backups/_runners/_writers/_AbstractIncrementalWriter.mjs

@@ -5,10 +5,6 @@ export class AbstractIncrementalWriter extends AbstractWriter {
     throw new Error('Not implemented')
   }
 
-  updateUuidAndChain() {
-    throw new Error('Not implemented')
-  }
-
   cleanup() {
     throw new Error('Not implemented')
   }

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

@@ -230,7 +230,6 @@ Settings are described in [`@xen-orchestra/backups/\_runners/VmsXapi.mjs``](http
     - `checkBaseVdis(baseUuidToSrcVdi, baseVm)`
     - `prepare({ isFull })`
     - `transfer({ timestamp, deltaExport, sizeContainers })`
-    - `updateUuidAndChain({ isVhdDifferencing, vdis })`
     - `cleanup()`
     - `healthCheck()` // is not executed if no health check sr or tag doesn't match
   - **Full**

@xen-orchestra/lite/src/libs/xapi-stats.ts

@@ -50,17 +50,7 @@ const RRD_POINTS_PER_STEP: { [key in RRD_STEP]: number } = {
 // Utils
 // -------------------------------------------------------------------
 
-function parseNumber(value: number | string) {
-  // Starting from XAPI 23.31, numbers in the JSON payload are encoded as
-  // strings to support NaN, Infinity and -Infinity
-  if (typeof value === 'string') {
-    const asNumber = +value
-    if (isNaN(asNumber) && value !== 'NaN') {
-      throw new Error('cannot parse number: ' + value)
-    }
-    value = asNumber
-  }
-
+function convertNanToNull(value: number) {
   return isNaN(value) ? null : value
 }
 
@@ -69,7 +59,7 @@ function parseNumber(value: number | string) {
 // -------------------------------------------------------------------
 
 const computeValues = (dataRow: any, legendIndex: number, transformValue = identity) =>
-  map(dataRow, ({ values }) => transformValue(parseNumber(values[legendIndex])))
+  map(dataRow, ({ values }) => transformValue(convertNanToNull(values[legendIndex])))
 
 const createGetProperty = (obj: object, property: string, defaultValue: unknown) =>
   defaults(obj, { [property]: defaultValue })[property] as any
@@ -329,14 +319,8 @@ export default class XapiStats {
       },
       abortSignal,
     })
-    const text = await resp.text()
-    try {
-      // starting from XAPI 23.31, the response is valid JSON
-      return JSON.parse(text)
-    } catch (error) {
-      // eslint-disable-next-line import/no-named-as-default-member -- https://github.com/json5/json5/issues/287
-      return JSON5.parse(text)
-    }
+    // eslint-disable-next-line import/no-named-as-default-member -- https://github.com/json5/json5/issues/287
+    return JSON5.parse(await resp.text())
   }
 
   // To avoid multiple requests, we keep a cache for the stats and
@@ -399,10 +383,7 @@ export default class XapiStats {
         abortSignal,
       })
 
-      const actualStep = parseNumber(json.meta.step)
-      if (actualStep !== step) {
-        throw new FaultyGranularity(`Unable to get the true granularity: ${actualStep}`)
-      }
+      const actualStep = json.meta.step as number
 
       if (json.data.length > 0) {
         // fetched data is organized from the newest to the oldest
@@ -426,15 +407,14 @@ export default class XapiStats {
 
           let stepStats = xoObjectStats[actualStep]
           let cacheStepStats = cacheXoObjectStats[actualStep]
-          const endTimestamp = parseNumber(json.meta.end)
-          if (stepStats === undefined || stepStats.endTimestamp !== endTimestamp) {
+          if (stepStats === undefined || stepStats.endTimestamp !== json.meta.end) {
             stepStats = xoObjectStats[actualStep] = {
-              endTimestamp,
+              endTimestamp: json.meta.end,
               interval: actualStep,
               canBeExpired: false,
             }
             cacheStepStats = cacheXoObjectStats[actualStep] = {
-              endTimestamp,
+              endTimestamp: json.meta.end,
               interval: actualStep,
               canBeExpired: true,
             }
@@ -458,6 +438,10 @@ export default class XapiStats {
           })
         })
       }
+
+      if (actualStep !== step) {
+        throw new FaultyGranularity(`Unable to get the true granularity: ${actualStep}`)
+      }
     } catch (error) {
       if (error instanceof Error && error.name === 'AbortError') {
         return

CHANGELOG.unreleased.md

@@ -9,10 +9,6 @@
 
 - Disable search engine indexing via a `robots.txt`
 - [Stats] Support format used by XAPI 23.31
-- [REST API] Export host [SMT](https://en.wikipedia.org/wiki/Simultaneous_multithreading) status at `/hosts/:id/smt` [Forum#71374](https://xcp-ng.org/forum/post/71374)
-- [Home & REST API] `$container` field of an halted VM now points to a host if a VDI is on a local storage [Forum#71769](https://xcp-ng.org/forum/post/71769)
-- [Size Input] Ability to select two new units in the dropdown (`TiB`, `PiB`) (PR [#7382](https://github.com/vatesfr/xen-orchestra/pull/7382))
-- [Pool/Advanced] _Auto power on_ can be disabled at pool level (PR [#7401](https://github.com/vatesfr/xen-orchestra/pull/7401))
 
 ### Bug fixes
 
@@ -21,8 +17,6 @@
 - [Settings/XO Config] Sort backups from newest to oldest
 - [Plugins/audit] Don't log `tag.getAllConfigured` calls
 - [Remotes] Correctly clear error when the remote is tested with success
-- [Import/VMWare] Fix importing last snapshot (PR [#7370](https://github.com/vatesfr/xen-orchestra/pull/7370))
-- [Host/Reboot] Fix false positive warning when restarting an host after updates (PR [#7366](https://github.com/vatesfr/xen-orchestra/pull/7366))
 
 ### Packages to release
 
@@ -46,6 +40,6 @@
 - vhd-lib patch
 - xo-server minor
 - xo-server-audit patch
-- xo-web minor
+- xo-web patch
 
 <!--packages-end-->

packages/vhd-lib/Vhd/VhdSynthetic.js

@@ -46,9 +46,9 @@ const VhdSynthetic = class VhdSynthetic extends VhdAbstract {
   }
 
   get compressionType() {
-    const compressionType = this.#vhds[0].compressionType
-    for (let i = 0; i < this.#vhds.length; i++) {
-      if (compressionType !== this.#vhds[i].compressionType) {
+    const compressionType = this.vhds[0].compressionType
+    for (let i = 0; i < this.vhds.length; i++) {
+      if (compressionType !== this.vhds[i].compressionType) {
         return 'MIXED'
       }
     }

packages/xo-server/src/api/host.mjs

@@ -1,4 +1,3 @@
-import semver from 'semver'
 import { createLogger } from '@xen-orchestra/log'
 import assert from 'assert'
 import { format } from 'json-rpc-peer'
@@ -137,38 +136,13 @@ export async function restart({
     const pool = this.getObject(host.$poolId, 'pool')
     const master = this.getObject(pool.master, 'host')
     const hostRebootRequired = host.rebootRequired
-
-    // we are currently in an host upgrade process
-    if (hostRebootRequired && host.id !== master.id) {
-      // this error is not ideal but it means that the pool master must be fully upgraded/rebooted before the current host can be rebooted.
-      //
-      // there is a single error for the 3 cases because the client must handle them the same way
-      const throwError = () =>
-        incorrectState({
-          actual: hostRebootRequired,
-          expected: false,
-          object: master.id,
-          property: 'rebootRequired',
-        })
-
-      if (semver.lt(master.version, host.version)) {
-        log.error(`master version (${master.version}) is older than the host version (${host.version})`, {
-          masterId: master.id,
-          hostId: host.id,
-        })
-        throwError()
-      }
-
-      if (semver.eq(master.version, host.version)) {
-        if ((await this.getXapi(host).listMissingPatches(master._xapiId)).length > 0) {
-          log.error('master has missing patches', { masterId: master.id })
-          throwError()
-        }
-        if (master.rebootRequired) {
-          log.error('master needs to reboot')
-          throwError()
-        }
-      }
+    if (hostRebootRequired && host.id !== master.id && host.version === master.version) {
+      throw incorrectState({
+        actual: hostRebootRequired,
+        expected: false,
+        object: master.id,
+        property: 'rebootRequired',
+      })
     }
   }
 

packages/xo-server/src/api/pool.mjs

@@ -15,7 +15,6 @@ const log = createLogger('xo:api:pool')
 export async function set({
   pool,
 
-  auto_poweron,
   name_description: nameDescription,
   name_label: nameLabel,
   backupNetwork,
@@ -26,7 +25,6 @@ export async function set({
   pool = this.getXapiObject(pool)
 
   await Promise.all([
-    auto_poweron !== undefined && pool.update_other_config('auto_poweron', String(auto_poweron)),
     nameDescription !== undefined && pool.set_name_description(nameDescription),
     nameLabel !== undefined && pool.set_name_label(nameLabel),
     migrationNetwork !== undefined && pool.update_other_config('xo:migrationNetwork', migrationNetwork),
@@ -41,10 +39,6 @@ set.params = {
   id: {
     type: 'string',
   },
-  auto_poweron: {
-    type: 'boolean',
-    optional: true,
-  },
   name_label: {
     type: 'string',
     optional: true,

packages/xo-server/src/api/pusb.mjs

@@ -1,27 +0,0 @@
-export async function scan({ host }) {
-  await this.getXapi(host).call('PUSB.scan', host._xapiRef)
-}
-
-scan.params = {
-  host: { type: 'string' },
-}
-scan.resolve = {
-  host: ['host', 'host', 'operate'],
-}
-
-export async function set({ pusb, enabled }) {
-  const xapi = this.getXapi(pusb)
-
-  if (enabled !== undefined && enabled !== pusb.passthroughEnabled) {
-    await xapi.call('PUSB.set_passthrough_enabled', pusb._xapiRef, enabled)
-  }
-}
-
-set.params = {
-  id: { type: 'string' },
-  enabled: { type: 'boolean', optional: true },
-}
-
-set.resolve = {
-  pusb: ['id', 'PUSB', 'administrate'],
-}

packages/xo-server/src/xapi-object-to-xo.mjs

@@ -98,7 +98,6 @@ const TRANSFORMS = {
   pool(obj) {
     const cpuInfo = obj.cpu_info
     return {
-      auto_poweron: obj.other_config.auto_poweron === 'true',
       crashDumpSr: link(obj, 'crash_dump_SR'),
       current_operations: obj.current_operations,
       default_SR: link(obj, 'default_SR'),
@@ -329,34 +328,6 @@ const TRANSFORMS = {
 
     const { creation } = xoData.extract(obj) ?? {}
 
-    let $container
-    if (obj.resident_on !== 'OpaqueRef:NULL') {
-      // resident_on is set when the VM is running (or paused or suspended on a host)
-      $container = link(obj, 'resident_on')
-    } else {
-      // if the VM is halted, the $container is the pool
-      $container = link(obj, 'pool')
-
-      // unless one of its VDI is on a non shared SR
-      //
-      // linked objects may not be there when this code run, and it will only be
-      // refreshed when the VM XAPI record change, this value is not guaranteed
-      // to be up-to-date, but it practice it appears to work fine thanks to
-      // `VBDs` and `current_operations` changing when a VDI is
-      // added/removed/migrated
-      for (const vbd of obj.$VBDs) {
-        const sr = vbd?.$VDI?.$SR
-        if (sr !== undefined && !sr.shared) {
-          const pbd = sr.$PBDs[0]
-          const hostId = pbd && link(pbd, 'host')
-          if (hostId !== undefined) {
-            $container = hostId
-            break
-          }
-        }
-      }
-    }
-
     const vm = {
       // type is redefined after for controllers/, templates &
       // snapshots.
@@ -451,7 +422,8 @@ const TRANSFORMS = {
       xenTools,
       ...getVmGuestToolsProps(obj),
 
-      $container,
+      // TODO: handle local VMs (`VM.get_possible_hosts()`).
+      $container: isRunning ? link(obj, 'resident_on') : link(obj, 'pool'),
       $VBDs: link(obj, 'VBDs'),
 
       // TODO: dedupe
@@ -890,17 +862,6 @@ const TRANSFORMS = {
       vm: link(obj, 'VM'),
     }
   },
-
-  pusb(obj) {
-    return {
-      type: 'PUSB',
-
-      description: obj.description,
-      host: link(obj, 'host'),
-      passthroughEnabled: obj.passthrough_enabled,
-      usbGroup: link(obj, 'USB_group'),
-    }
-  },
 }
 
 // ===================================================================

packages/xo-server/src/xo-mixins/migrate-vm.mjs

@@ -280,7 +280,7 @@ export default class MigrateVm {
             const stream = vhd.stream()
             await vdi.$importContent(stream, { format: VDI_FORMAT_VHD })
           }
-          return { vdi, vhd }
+          return vhd
         })
       )
     )

packages/xo-server/src/xo-mixins/rest-api.mjs

@@ -72,8 +72,11 @@ async function* makeObjectsStream(iterable, makeResult, json) {
 async function sendObjects(iterable, req, res, path = req.path) {
   const { query } = req
 
-  const basePath = join(req.baseUrl, path)
-  const makeUrl = ({ id }) => join(basePath, typeof id === 'number' ? String(id) : id)
+  const { baseUrl } = req
+  const makeUrl = item => {
+    const { id } = item
+    return join(baseUrl, typeof path === 'function' ? path(item) : path, typeof id === 'number' ? String(id) : id)
+  }
 
   let makeResult
   let { fields } = query
@@ -253,10 +256,6 @@ export default class RestApi {
           const host = req.xapiObject
           res.json(await host.$xapi.listMissingPatches(host))
         },
-
-        async smt({ xapiObject }, res) {
-          res.json({ enabled: await xapiObject.$xapi.isHyperThreadingEnabled(xapiObject.$id) })
-        },
       }
 
       collections.pools.routes = {
@@ -281,6 +280,36 @@ export default class RestApi {
         },
       }
 
+      {
+        async function vdis(req, res) {
+          const { object, query } = req
+
+          const vdiIds = new Set()
+          for (const vbdId of object.$VBDs) {
+            const vbd = app.getObject(vbdId, 'VBD')
+            const vdiId = vbd.VDI
+            if (vdiId !== undefined) {
+              vdiIds.add(vdiId)
+            }
+          }
+
+          await sendObjects(
+            handleArray(
+              Array.from(vdiIds, id => app.getObject(id, ['VDI', 'VDI-snapshot'])),
+              query.filter,
+              ifDef(query.limit, Number)
+            ),
+            req,
+            res,
+            ({ type }) => type.toLowerCase() + 's'
+          )
+        }
+
+        for (const collection of ['vms', 'vm-snapshots', 'vm-templates']) {
+          collections[collection].routes.vdis = vdis
+        }
+      }
+
       collections.pools.actions = {
         create_vm: withParams(
           defer(async ($defer, { xapiObject: { $xapi } }, { affinity, boot, install, template, ...params }, req) => {

packages/xo-web/src/common/form/index.js

@@ -138,7 +138,7 @@ export class Range extends Component {
 
 export Toggle from './toggle'
 
-const UNITS = ['kiB', 'MiB', 'GiB', 'TiB', 'PiB']
+const UNITS = ['kiB', 'MiB', 'GiB']
 const DEFAULT_UNIT = 'GiB'
 
 export class SizeInput extends BaseComponent {

packages/xo-web/src/common/intl/messages.js

@@ -1404,7 +1404,6 @@ const messages = {
   deleteVtpm: 'Delete the VTPM',
   deleteVtpmWarning:
     'If the VTPM is in use, removing it will result in a dangerous data loss. Are you sure you want to remove the VTPM?',
-  poolAutoPoweronDisabled: 'Auto power on is disabled at pool level, click to fix automatically.',
   vmRemoveButton: 'Remove',
   vmConvertToTemplateButton: 'Convert to template',
   vmSwitchVirtualizationMode: 'Convert to {mode}',

packages/xo-web/src/common/iso-device.js

@@ -54,9 +54,13 @@ export default class IsoDevice extends Component {
     () => this.props.vm.$pool,
     () => this.props.vm.$container,
     (vmPool, vmContainer) => sr => {
+      const vmRunning = vmContainer !== vmPool
+      const sameHost = vmContainer === sr.$container
+      const samePool = vmPool === sr.$pool
+
       return (
-        vmPool === sr.$pool &&
-        (sr.shared || vmContainer === sr.$container) &&
+        samePool &&
+        (vmRunning ? sr.shared || sameHost : true) &&
         (sr.SR_type === 'iso' || (sr.SR_type === 'udev' && sr.size))
       )
     }

packages/xo-web/src/xo-app/host/tab-general.js

@@ -3,6 +3,7 @@ import _ from 'intl'
 import Copiable from 'copiable'
 import decorate from 'apply-decorators'
 import Icon from 'icon'
+import map from 'lodash/map'
 import React from 'react'
 import store from 'store'
 import HomeTags from 'home-tags'
@@ -23,21 +24,10 @@ export default decorate([
   provideState({
     computed: {
       areHostsVersionsEqual: ({ areHostsVersionsEqualByPool }, { host }) => areHostsVersionsEqualByPool[host.$pool],
-      inMemoryVms: (_, { vms }) => {
-        const result = []
-        for (const key of Object.keys(vms)) {
-          const vm = vms[key]
-          const { power_state } = vm
-          if (power_state === 'Running' || power_state === 'Paused') {
-            result.push(vm)
-          }
-        }
-        return result
-      },
     },
   }),
   injectState,
-  ({ statsOverview, host, nVms, vmController, state: { areHostsVersionsEqual, inMemoryVms } }) => {
+  ({ statsOverview, host, nVms, vmController, vms, state: { areHostsVersionsEqual } }) => {
     const pool = getObject(store.getState(), host.$pool)
     const vmsFilter = encodeURIComponent(new CM.Property('$container', new CM.String(host.id)).toString())
     return (
@@ -130,7 +120,7 @@ export default decorate([
                 tooltip={`${host.productBrand} (${formatSize(vmController.memory.size)})`}
                 value={vmController.memory.size}
               />
-              {inMemoryVms.map(vm => (
+              {map(vms, vm => (
                 <UsageElement
                   tooltip={`${vm.name_label} (${formatSize(vm.memory.size)})`}
                   key={vm.id}

packages/xo-web/src/xo-app/pool/tab-advanced.js

@@ -16,7 +16,6 @@ import { CustomFields } from 'custom-fields'
 import { injectIntl } from 'react-intl'
 import { forEach, map, values } from 'lodash'
 import { Text, XoSelect } from 'editable'
-import { Toggle } from 'form'
 import {
   createGetObject,
   createGetObjectsOfType,
@@ -240,8 +239,6 @@ export default class TabAdvanced extends Component {
     plugins => plugins !== undefined && plugins.some(plugin => plugin.name === 'netbox' && plugin.loaded)
   )
 
-  _onChangeAutoPoweron = value => editPool(this.props.pool, { auto_poweron: value })
-
   _onChangeBackupNetwork = backupNetwork => editPool(this.props.pool, { backupNetwork: backupNetwork.id })
 
   _removeBackupNetwork = () => editPool(this.props.pool, { backupNetwork: null })
@@ -303,12 +300,6 @@ export default class TabAdvanced extends Component {
               <h3>{_('xenSettingsLabel')}</h3>
               <table className='table'>
                 <tbody>
-                  <tr>
-                    <th>{_('autoPowerOn')}</th>
-                    <td>
-                      <Toggle value={pool.auto_poweron} onChange={this._onChangeAutoPoweron} />
-                    </td>
-                  </tr>
                   <tr>
                     <th>{_('poolHaStatus')}</th>
                     <td>{pool.HA_enabled ? _('poolHaEnabled') : _('poolHaDisabled')}</td>

packages/xo-web/src/xo-app/vm/tab-advanced.js

@@ -715,17 +715,7 @@ export default class TabAdvanced extends Component {
                   </td>
                 </tr>
                 <tr>
-                  <th>
-                    {_('autoPowerOn')}
-                    {vm.auto_poweron && !vmPool.auto_poweron && (
-                      <Tooltip content={_('poolAutoPoweronDisabled')}>
-                        <a className='btn btn-link btn-sm' onClick={() => editVm(vm, { auto_poweron: true })}>
-                          {' '}
-                          <Icon icon='alarm' className='text-warning' />
-                        </a>
-                      </Tooltip>
-                    )}
-                  </th>
+                  <th>{_('autoPowerOn')}</th>
                   <td>
                     <Toggle value={Boolean(vm.auto_poweron)} onChange={value => editVm(vm, { auto_poweron: value })} />
                   </td>