fix(xo-vmdk-to-vhd): improve compatibilty of ova with disk bigger than 8.2GB (#7183)

following #7047, from https://xcp-ng.org/forum/topic/7946/ova-export-not-functional?_=1700051758755

ova exported from xo with more than 8.2G data per disk can't be imported in virtual box 

tar-stream@3 pack and entry are now streams

CHANGELOG.unreleased.md

@@ -15,6 +15,7 @@
 
 - [Backup/Restore] In case of snapshot with memory, create the suspend VDI on the correct SR instead of the default one
 - [Import/ESXi] Handle `Cannot read properties of undefined (reading 'perDatastoreUsage')` error when importing VM without storage (PR [#7168](https://github.com/vatesfr/xen-orchestra/pull/7168))
+- [Export/OVA] Handle export with resulting disk larger than 8.2GB (PR [#7183](https://github.com/vatesfr/xen-orchestra/pull/7183))
 
 ### Packages to release
 
@@ -36,6 +37,7 @@
 - @xen-orchestra/backups patch
 - @xen-orchestra/vmware-explorer patch
 - xo-server-netbox minor
+- xo-vmdk-to-vhd patch
 - xo-web patch
 
 <!--packages-end-->

packages/xo-vmdk-to-vhd/package.json

@@ -18,14 +18,14 @@
   "preferGlobal": false,
   "main": "dist/",
   "engines": {
-    "node": ">=12"
+    "node": ">=12.3"
   },
   "dependencies": {
     "child-process-promise": "^2.0.3",
     "lodash": "^4.17.15",
     "pako": "^2.0.4",
     "promise-toolbox": "^0.21.0",
-    "tar-stream": "^2.2.0",
+    "tar-stream": "^3.1.6",
     "vhd-lib": "^4.6.1",
     "xml2js": "^0.4.23"
   },

packages/xo-vmdk-to-vhd/src/ova-generate.js

@@ -1,12 +1,13 @@
 import tar from 'tar-stream'
 import { computeVmdkLength, vhdToVMDKIterator } from '.'
 import { fromCallback } from 'promise-toolbox'
+import { pipeline } from 'stream'
 
 // WE MIGHT WANT TO HAVE A LOOK HERE: https://opennodecloud.com/howto/2013/12/25/howto-ON-ovf-reference.html
 
 /**
  *
- * @param writeStream
+ * @param outStream
  * @param vmName
  * @param vmDescription
  * @param disks [{name, fileName, capacityMB, getStream}]
@@ -16,19 +17,13 @@ import { fromCallback } from 'promise-toolbox'
  * @returns readStream
  */
 export async function writeOvaOn(
-  writeStream,
+  outStream,
   { vmName, vmDescription = '', disks = [], firmware = 'bios', nics = [], vmMemoryMB = 64, cpuCount = 1 }
 ) {
   const ovf = createOvf(vmName, vmDescription, disks, nics, vmMemoryMB, cpuCount, firmware)
-  const pack = tar.pack()
-  const pipe = pack.pipe(writeStream)
-  await fromCallback.call(pack, pack.entry, { name: `metadata.ovf` }, Buffer.from(ovf, 'utf8'))
-
-  async function writeDisk(entry, blockIterator) {
-    for await (const block of blockIterator) {
-      await fromCallback.call(entry, entry.write, block)
-    }
-  }
+  const tarStream = tar.pack()
+  pipeline(tarStream, outStream, () => {})
+  await fromCallback.call(tarStream, tarStream.entry, { name: `metadata.ovf` }, Buffer.from(ovf, 'utf8'))
 
   // https://github.com/mafintosh/tar-stream/issues/24#issuecomment-558358268
   async function pushDisk(disk) {
@@ -38,23 +33,20 @@ export async function writeOvaOn(
     }
     disk.fileSize = size
     return new Promise((resolve, reject) => {
-      const entry = pack.entry({ name: `${disk.name}.vmdk`, size }, err => {
+      const entryWriteStream = tarStream.entry({ name: `${disk.name}.vmdk`, size, type: 'file' }, err => {
         if (err == null) {
           return resolve()
         } else return reject(err)
       })
-      return writeDisk(entry, iterator).then(
-        () => entry.end(),
-        e => reject(e)
-      )
+      pipeline(iterator, entryWriteStream, () => {})
     })
   }
 
   for (const disk of disks) {
     await pushDisk(disk)
   }
-  pack.finalize()
-  return pipe
+  tarStream.finalize()
+  return outStream
 }
 
 function createDiskSections(disks) {