Why do bind mounts prevent snapshots?

[timdonovan]

mp0 are checked in the PVE logic, lxc.mount.entry are not.

Thanks - what does this actually mean though?

 

[LnxBil]

Thanks - what does this actually mean though?

In this context: PVE is "just" an additional layer around a LX(C) container, which adds new features. mp0 is PVE logic and therefore implies "not snapshottable", the setting lxc.mount.entry is a basic setting and will be ignored by PVE and only directly interpreted by the LXC logic.

 

[Sarke]

To snapshot,
1. Shutdown machine
2. Backup /etc/pve/nodes/eno/qemu-server/ VMID .conf
3. Detatch the offending drives
4. Snapshot
5. Add detached drive entries into conf
6. Boot

I want to add that when you do this, Proxmox will "forget" about any snapshots you've taken and no longer list them on the Snapshots tab. Removing the drive won't bring them back either, but they are still there as ZFS snapshots (or whatever format you have). So going with `lxc.mount.entry` seems to be the better option.