Cloud VM Backup From Snapshot job fails with error 20
In NetBackup 11.1 environment where parallel stream/read is enabled, grant parent/anchor image Backup From Snapshot jobs may fail with error 20.
The Backup From Snapshot job fails with the following error:
invalid command parameter(20)
On the job details tab, the following message appears:
Failed to update jobid info in Media Descriptor.
This issue occurs due to inconsistencies between the NetBackup Snapshot Manager server resource capability and the resources currently recognized by NetBackup. When resource capabilities change (either increase or decrease), the updates may not immediately reflect within NetBackup during job scheduling, leading to Backup From Snapshot job failures.
:
To resolve the issue, perform the following steps:
Open the failed job's details and note the backup id.
Cancel the failing backup id:
On the primary server, run the following command to cancel the backup ID that is failing:
nbstlutil cancel -backupid <backupid>
This ensures that the Storage Lifecycle Policy (SLP) iteration does not continue for the failing backup id.
Once the failing backup id is canceled, reschedule or rerun the Backup From Snapshot job.