Snapshot restore issue

LXD
1

I have 2 snapshot in my container. I cannot restore the oldest snapshot point. But it allow me to restore the earliest snapshot point. I know it also allow me the oldest snapshot point if I remove the earliest snapshot. This problem I saw oldest version LXD but as far I remember I in 4.12 I can restore my container on any snapshot point! But now 4.14 doesn’t not support to restore any snapshot point. Is there anything wrong to me?

Snapshots:
graf (taken at 2021/05/20 03:26 UTC) (stateless)
grafff (taken at 2021/05/20 03:26 UTC) (stateless)
root@lxd1:~# lxc restore graf graf
Error: Snapshot “graf” cannot be restored due to subsequent snapshot(s). Set zfs.remove_snapshots to override

2

Hi,

This is a limitation of ZFS rather than LXD, and it hasn’t changed in LXD 4.14.

Please see https://linuxcontainers.org/lxd/docs/master/storage#zfs for more info.

It suggests a workaround of:

“Copying the wanted snapshot into a new instance and then deleting the old instance does however work, at the cost of losing any other snapshot the instance may have had.”

3

But how can it was possible in 4.12!!

4

If you can post a step by step reproducer we can see more clearly what you are doing and then suggest the possibilities of what is happening.

5

I was restore any snapshot not only the earliest snapshot in version 4.11-12. I thought LXD forum fixed with it new release. But now in 4.14 is same the issue ! only restore in earliest version.

6

Perhaps you were using a different storage pool type that doesn’t have that restriction or you had enabled zfs.remove_snapshots, but this isn’t something LXD can fix as the restriction comes from ZFS.