feat(backups,xo-server,xo-web): make NBD concurrency configurable

@xen-orchestra/backups/_incrementalVm.mjs

@@ -34,6 +34,7 @@ export async function exportIncrementalVm(
     fullVdisRequired = new Set(),
 
     disableBaseTags = false,
+    nbdConcurrency = 1,
     preferNbd,
   } = {}
 ) {
@@ -82,6 +83,7 @@ export async function exportIncrementalVm(
       baseRef: baseVdi?.$ref,
       cancelToken,
       format: 'vhd',
+      nbdConcurrency,
       preferNbd,
     })
   })

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

@@ -42,6 +42,7 @@ export const IncrementalXapi = class IncrementalXapiVmBackupRunner extends Abstr
     const deltaExport = await exportIncrementalVm(exportedVm, baseVm, {
       fullVdisRequired,
       preferNbd: this._settings.preferNbd,
+      nbdConcurrency: this._settings.nbdConcurrency,
     })
     // since NBD is network based, if one disk use nbd , all the disk use them
     // except the suspended VDI

CHANGELOG.unreleased.md

@@ -14,6 +14,7 @@
 - [REST API] _Mirror Backup_ jobs are available at `/backup/jobs/mirror`
 - [Plugin/auth-saml] Add _Force re-authentication_ setting [Forum#67764](https://xcp-ng.org/forum/post/67764) (PR [#7232](https://github.com/vatesfr/xen-orchestra/pull/7232))
 - [HTTP] `http.useForwardedHeaders` setting can be enabled when XO is behind a reverse proxy to fetch clients IP addresses from `X-Forwarded-*` headers [Forum#67625](https://xcp-ng.org/forum/post/67625) (PR [#7233](https://github.com/vatesfr/xen-orchestra/pull/7233))
+- [Backup]Use multiple link to speedup NBD backup (PR [#7216](https://github.com/vatesfr/xen-orchestra/pull/7216))
 
 ### Bug fixes
 

packages/xo-server/src/api/backup-ng.mjs

@@ -22,6 +22,15 @@ const SCHEMA_SETTINGS = {
           minimum: 0,
           optional: true,
         },
+        preferNbd: {
+          type: 'boolean',
+          optional: true,
+        },
+        nbdConcurrency: {
+          type: 'number',
+          minimum: 1,
+          optional: true,
+        },
       },
       additionalProperties: true,
     },
@@ -279,8 +288,8 @@ importVmBackup.params = {
   },
   useDifferentialRestore: {
     type: 'boolean',
-    optional: true
-  }
+    optional: true,
+  },
 }
 
 export function checkBackup({ id, settings, sr }) {

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

@@ -586,6 +586,7 @@ const messages = {
   editJobNotFound: "The job you're trying to edit wasn't found",
   preferNbd: 'Use NBD protocol to transfer disk if available',
   preferNbdInformation: 'A network accessible by XO or the proxy must have NBD enabled',
+  nbdConcurrency: 'Number of NBD connexion per disk',
 
   // ------ New Remote -----
   newRemote: 'New file system remote',

packages/xo-web/src/xo-app/backup/new/index.js

@@ -188,6 +188,7 @@ const getInitialState = ({ preSelectedVmIds, setHomeVmIdsSelection, suggestedExc
     deltaMode: false,
     drMode: false,
     name: '',
+    nbdConcurrency: 1,
     preferNbd: false,
     remotes: [],
     schedules: {},
@@ -629,6 +630,11 @@ const New = decorate([
             preferNbd,
           })
         },
+      setNbdConcurrency({ setGlobalSettings }, nbdConcurrency) {
+        setGlobalSettings({
+          nbdConcurrency,
+        })
+      },
     },
     computed: {
       compressionId: generateId,
@@ -637,6 +643,7 @@ const New = decorate([
       inputFullIntervalId: generateId,
       inputMaxExportRate: generateId,
       inputPreferNbd: generateId,
+      inputNbdConcurrency: generateId,
       inputTimeoutId: generateId,
 
       // In order to keep the user preference, the offline backup is kept in the DB
@@ -748,6 +755,7 @@ const New = decorate([
       concurrency,
       fullInterval,
       maxExportRate,
+      nbdConcurrency = 1,
       offlineBackup,
       offlineSnapshot,
       preferNbd,
@@ -1040,6 +1048,20 @@ const New = decorate([
                           />
                         </FormGroup>
                       )}
+                      {state.isDelta && (
+                        <FormGroup>
+                          <label htmlFor={state.inputNbdConcurrency}>
+                            <strong>{_('nbdConcurrency')}</strong>
+                          </label>
+                          <Number
+                            id={state.inputNbdConcurrency}
+                            min={1}
+                            onChange={effects.setNbdConcurrency}
+                            value={nbdConcurrency}
+                            disabled={!state.inputPreferNbd}
+                          />
+                        </FormGroup>
+                      )}
                       <FormGroup>
                         <label htmlFor={state.inputMaxExportRate}>
                           <strong>{_('speedLimit')}</strong>