VE Backup on NAS with an error

[mueller-esch]

Hi, I have some problem with the backup-routine in the node. The backup of the VM are going well but the backup of the LXC's send an error in the log

2024-01-05 15:51:10 INFO: Starting Backup of VM 203 (lxc)
2024-01-05 15:51:10 INFO: status = running
2024-01-05 15:51:10 INFO: CT Name: PiHole
2024-01-05 15:51:10 INFO: including mount point rootfs ('/') in backup
2024-01-05 15:51:10 INFO: backup mode: snapshot
2024-01-05 15:51:10 INFO: ionice priority: 7
2024-01-05 15:51:10 INFO: create storage snapshot 'vzdump'
2024-01-05 15:51:11 INFO: creating vzdump archive '/mnt/pve/DS720/dump/vzdump-lxc-203-2024_01_05-15_51_10.tar.zst'
2024-01-05 15:51:11 INFO: tar: /mnt/pve/DS720/dump/vzdump-lxc-203-2024_01_05-15_51_10.tmp: Cannot open: Permission denied
2024-01-05 15:51:11 INFO: tar: Error is not recoverable: exiting now
2024-01-05 15:51:11 INFO: cleanup temporary 'vzdump' snapshot
2024-01-05 15:51:11 ERROR: Backup of VM 203 failed - command 'set -o pipefail && lxc-usernsexec -m u:0:100000:65536 -m g:0:100000:65536 -- tar cpf - --totals --one-file-system -p --sparse --numeric-owner --acls --xattrs '--xattrs-include=user.*' '--xattrs-include=security.capability' '--warning=no-file-ignored' '--warning=no-xattr-write' --one-file-system '--warning=no-file-ignored' '--directory=/mnt/pve/DS720/dump/vzdump-lxc-203-2024_01_05-15_51_10.tmp' ./etc/vzdump/pct.conf ./etc/vzdump/pct.fw '--directory=/mnt/vzsnap0' --no-anchored '--exclude=lost+found' --anchored '--exclude=./tmp/?*' '--exclude=./var/tmp/?*' '--exclude=./var/run/?*.pid' ./ | zstd --rsyncable '--threads=1' >/mnt/pve/DS720/dump/vzdump-lxc-203-2024_01_05-15_51_10.tar.dat' failed: exit code 2

The storage for the backup is the same and I don't know where should be a different permission for these backups (VM and LXC) Who can help for this. Best regards Paul

 

[Dunuin]

UID 0 and 100000 need read+write permission on your backup storage when backing up unprivileged LXCs. For VMs and privileged LXCs its only UID 0.