lxc disappeared after backup fail

[yijen]

Hi all,

Sorry, I found post wrong place, I have post in PVE forum...

I have a lxc with nextcloud under (CT ID:110), I restore the backup since something wrong, but fail!
After reboot, I found the CT ID is disappeared!

Does somebody know how to save the CT, or save the data?
Thanks in advanced!!!

Environment

Cluster1: PVE 7.x (Just upgrade from PVE 6.x on Nov. 19)
Make cluster is also on Nov. 19

Cluster2 : PVE 7.x (New install with 7.x directly)

CT 110 is under cluster1, has backup daily and keep 1 copy.


History
Nov. 27 Update php for CT 110 from 7.3 to 7.4, but fail

Nov. 28 Try to roll back from snap, fail
Try to restore the backup file, but fail (error message is as below)

recovering backed-up configuration from 'local:backup/vzdump-lxc-110-2022_11_26-02_00_03.tar.zst'
restoring 'local:backup/vzdump-lxc-110-2022_11_26-02_00_03.tar.zst' now..
extracting archive '/var/lib/vz/dump/vzdump-lxc-110-2022_11_26-02_00_03.tar.zst'
Total bytes read: 54229350400 (51GiB, 19MiB/s)
Detected container architecture: amd64
merging backed-up and given configuration..
TASK ERROR: unable to restore CT 110 - closing file '/etc/pve/nodes/X3430/lxc/110.conf.tmp.442733' failed - Permission denied

Reboot cluster 1 and 2 since they are unstable

Nov. 29 Found lxc is disappear in the morning.
Try to make 110.conf, but cannot start it
TASK ERROR: zfs error: cannot open 'Blue2T-01/subvol-110-disk-0': dataset does not exist