Hi, We have had a situation three times where rbd images seem to be corrupt after restoring a snapshot, and I'm looking for advice on how to investigate this. We're running Proxmox 7 with Ceph Octopus (Proxmox build, 15.2.17-pve1). Every time the problem has happened, it has happened after these actions were done with the VM: (Yesterday) - VM stopped - Snapshot created - VM started - VM stopped - Snapshot restored - VM started (OK) - Nightly backup with vzdump to Proxmox Backup Server (Today) - VM stopped - Snapshot restored - VM does not start On previous occasions we tried to find a solution and when we couldn't, we restored the VM from backup, which solved the problem. Now this happened to a test system, so we've left the situation as is and maybe get to the root cause. Some observations: * We're using krbd * The PBS backups don't allow file restore if the backup was made from a "broken" image * After mapping the current image, it doesn't seem to contain a partition table There's a thread on the Proxmox forum about this issues as well[1]. If anyone could give some advice about how to proceed from here, I'd be very grateful. Best regards, Roel PS: An upgrade to Pacific has already been planned. [1] https://forum.proxmox.com/threads/vm-disks-corrupt-after-reverting-to-snapsh... -- Wij zijn ISO 27001 gecertificeerd 1A First Alternative BV T: +31 (0)88 0016405 W: https://www.1afa.com