I have issue when i use Storage Snapshot with VBR 18.104.22.1685 and NetApp (1x FAS2552 2x FAS254) : ONTAP OS: 'NetApp Release 8.3.2P8 (No Flexclone license).
By intermitence we got this errors in the Backup Job Logs (Job.<MyBackupJobName>.Backup.log):
- Error Attempt to create snapshot when clone in progress
- Error Snapshot operation not allowed due to clones backed by snapshots. Try again after sometime
There is a NetApp KB talking about that :https://kb.netapp.com/support/index?pag ... id=2023724
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The solution of this KB helped me to understand what's happened :
SOLUTION To resolve the issue, ensure that no other backup programs are running at the same time as a VSC backup.
We only have VBR to Backup VMs, but we have 2 Backup Job each one have some VMs of the same LUN/datastore.
I think the issue is caused when i create a snapshot+clone for the First Job and when the second Job start it can't create another clone, because another one is already created by the First Job.
If this is true, we need to change our Backup Job Policy and maybe a best practices is to :
- Backup Job n°1 with all VMs of LUN1
- Backup job n°2 with all VMs of LUN2
So we can launch all backup Job simultaneous and won't have this "Storage Snapshot" Issue.
Maybe we will have to use "per-VM Backup files" if we have too many VMs on a single LUN but it's another subject.
What do you think about this Backup Policy change (One Backup Job by LUN/Datstore) when using Storage Snapshot ?