Cluster Resource Scheduler (CRS) migrates VMs during Backup

May 13, 2025
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Germany/Neuss
A scheduled backup of a VM to a Proxmox backup server fails if the CRS simultaneously migrates the VM from one PVE host to another.
The backup job was scheduled to run at night, the migration of the VM was initiated by CRS without user input.

Is there a way to prevent HA migrations for a specific VM while a backup job is running?
 
I's a routed network between our PVE-Hosts an our Backup-Server. Our Storage is a NetApp which is connected via NFS. Our firewall settings are OK - our backup is running fine.
I'm not allowed to post detailled information. What exactly do you want to know?