@Pilow Are these VMs HA-protected? If yes, maybe when HA is re-enabled after the RPU it believes that the VM is down and must be started.
There's a pool-wide setting tell HA not to restart a VM that was manually stopped:
xe pool-param-set uuid=<your pool uuid> ha-reboot-vm-on-internal-shutdown=false
@flakpyro that's a good news ( but at least another user saw this)
we are currently testing the branch ensuring that at least the fix don't create other issues
Different use cases: Ceph is better with more hosts (at least 6 or 7 minimum) while XOSTOR is better between 3 to 7/8.
We might have better Ceph support in the future for large clusters.