One of my XCP-ng VM’s suddenly refuses to backup (XOA BackupNG Deltabackup).
It always returns “SR_BACKEND_FAILURE_109(, The snapshot chain is too long, )”
I read on forums that this has something to do with too many snapshots, but when I check there are only 3.
I also can’t mannually create a new snapshot anymore …
I even tried to delete 1 of the 3 existing snapshots, and then tried to manually create a new snapshot, but no luck either …
How do I “clean up” the snapshots on this VM to free it up to make new snapshots again ?
How do I set Backup-NG not to encounter this problem again in the future ?