Backup error 23

[Por12]

Hello,

I'm having error 23 every time I try to backup some containers. Error happens backing up to a PBS server and to a local zfs drive. Error happens on most containers.

full output:

INFO: starting new backup job: vzdump 517 --storage local --compress zstd --remove 0 --node apollo --notes-template '{{guestname}}' --mode snapshot
INFO: filesystem type on dumpdir is 'zfs' -using /var/tmp/vzdumptmp1324746_517 for temporary files
INFO: Starting Backup of VM 517 (lxc)
INFO: Backup started at 2023-09-02 18:14:55
INFO: status = running
INFO: CT Name: pihole
INFO: including mount point rootfs ('/') in backup
INFO: mode failure - some volumes do not support snapshots
INFO: trying 'suspend' mode instead
INFO: backup mode: suspend
INFO: ionice priority: 7
INFO: CT Name: pihole
INFO: including mount point rootfs ('/') in backup
INFO: starting first sync /proc/40439/root/ to /var/tmp/vzdumptmp1324746_517
ERROR: Backup of VM 517 failed - command 'rsync --stats -h -X -A --numeric-ids -aH --delete --no-whole-file --sparse --one-file-system --relative '--exclude=/tmp/?*' '--exclude=/var/tmp/?*' '--exclude=/var/run/?*.pid' /proc/40439/root//./ /var/tmp/vzdumptmp1324746_517' failed: exit code 23
INFO: Failed at 2023-09-02 18:15:02
INFO: Backup job finished with errors
TASK ERROR: job errors

Any ideas? I've searched this forum but I got nothing useful.

Thanks!

 

[Por12]

Fixed, it was an error with ACLs

You need to create a new mountpoint for it in the zfs pool and set that to acl:

zfs create -o mountpoint=/mnt/vztmp rpool/vztmp
zfs set acltype=posixacl rpool/vztmp

nano /etc/vzdump.conf
change #tmpdir DIR to tmpdir:/mnt/vztmp

See ZFS guide: https://pve.proxmox.com/wiki/ZFS:_Tips_and_Tricks#LXC_with_ACL_on_ZFS or this post: https://forum.proxmox.com/threads/r...ype_default-operation-not-supported-95.25543/