Failed to create a new instance from backup with Veeam using vSAN storage

[abh1sar]

Discussed in #11886

^{Originally posted by leolns October 21, 2025}

problem

Cloudstack 4.21.0.0 + VMware 8u3g + vSAN + Veeam 12 environment.

When trying to create a new instance from an existing backup, an error occurs because the datastore cannot be found. The datastore lookup is using the CloudStack UUID instead of the volume name.

$ds = Find-VBRViDatastore -Server:$server -Name "0f2b59684453331eb366a6d7036bae96"

Find-VBRViDatastore doesnt accept uuid, it needs vmware volume name

ERROR [c.c.u.s.SshHelper] (API-Job-Executor-120:[ctx-e94e8dfc, job-58501, ctx-8df14098]) (logid:d58f3113) SSH execution of command PowerShell Import-Module Veeam.Backup.PowerShell -WarningAction SilentlyContinue;$ProgressPreference='SilentlyContinue';$points = Get-VBRRestorePoint;foreach($point in $points) { if ($point.Id -eq '4bf0faea-53e5-4d3f-bf2c-8f83a2104e7d') { $restorePoint = $point; break; } };$server = Get-VBRServer -Name "10.10.10.103";$ds = Find-VBRViDatastore -Server:$server -Name "0f2b59684453331eb366a6d7036bae96";$job = Start-VBRRestoreVM -RestorePoint:$restorePoint -Server:$server -Datastore:$ds -VMName "i-8-662-TESTEDEMOBKPRESTORE" -RunAsync;while (-not (Get-VBRRestoreSession -Id $job.Id).IsCompleted) { Start-Sleep -Seconds 10 } has an error status code in return. Result output: Find-VBRViDatastore : Cannot convert 'System.Object[]' to the type 'Veeam.Backup.Core.Common.CHost' required by ^M
parameter 'Server'. Specified method is not supported.^M
At line:1 char:342^M
+ ... -Name 10.254.254.10;$ds = Find-VBRViDatastore -Server:$server -Name 0 ...^M
+                                                           ~~~~~~~^M
    + CategoryInfo          : InvalidArgument: (:) [Find-VBRViDatastore], ParameterBindingException^M
    + FullyQualifiedErrorId : CannotConvertArgument,Veeam.Backup.PowerShell.Cmdlets.FindVBRViDatastore^M
 ^M
Start-VBRRestoreVM : Cannot convert 'System.Object[]' to the type 'Veeam.Backup.Core.Common.CHost' required by ^M
parameter 'Server'. Specified method is not supported.^M
At line:1 char:451^M

versions

Cloudstack 4.21.0.0 + VMware 8u3g + vSAN + Veeam 12

The steps to reproduce the bug

Try to create a new instance from backup

What to do about it?

Find-VBRViDatastore doesnt accept uuid, it needs vmware volume name

[abh1sar]

Yes, this is a bug in cloudstack.
For NFS storage, the datastore name in vmware is created from the primary_storage uuid in cloudstack by removing all hyphens.
VMFS (VSan) keeps the native datastore name. (CloudStack sets a custom field cloud.uuid equal to the primary_storage uuid for reference)

The Create new Instance from backup code is deriving the datastore name from primary_storage uuid, which works for NFS storage but not for VMFS.
The same issue is present in Restore single volume from veeam in all versions, as Create new instance feature has derived the code from the Restore single Volume feature.