I have a container with Turkey linux running a Nextcloud server, this container has approximately 400GB occupied out of a total of 800GB but when backing up the error, both the local backup and the backup using PBS
INFO: starting new backup job: vzdump 102 --node pve --mode snapshot --storage BACKUPS-VMS --compress zstd --remove 0
INFO: filesystem type on dumpdir is 'zfs' -using /var/tmp/vzdumptmp3956263_102 for temporary files
INFO: Starting Backup of VM 102 (lxc)
INFO: Backup started at 2022-05-23 11:58:58
INFO: status = running
INFO: CT Name: NEXTCLOUD
INFO: including mount point rootfs ('/') in backup
INFO: found old vzdump snapshot (force removal)
zfs error: could not find any snapshots to destroy; check snapshot names.
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: create storage snapshot 'vzdump'
INFO: creating vzdump archive '/STORAGE-1T/BACKUPS/dump/vzdump-lxc-102-2022_05_23-11_58_58.tar.zst'
INFO: cleanup temporary 'vzdump' snapshot
INFO: starting new backup job: vzdump 102 --node pve --mode snapshot --storage BACKUPS-VMS --compress zstd --remove 0
INFO: filesystem type on dumpdir is 'zfs' -using /var/tmp/vzdumptmp3956263_102 for temporary files
INFO: Starting Backup of VM 102 (lxc)
INFO: Backup started at 2022-05-23 11:58:58
INFO: status = running
INFO: CT Name: NEXTCLOUD
INFO: including mount point rootfs ('/') in backup
INFO: found old vzdump snapshot (force removal)
zfs error: could not find any snapshots to destroy; check snapshot names.
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: create storage snapshot 'vzdump'
INFO: creating vzdump archive '/STORAGE-1T/BACKUPS/dump/vzdump-lxc-102-2022_05_23-11_58_58.tar.zst'
INFO: cleanup temporary 'vzdump' snapshot