[SOLVED] Backup for VMs and Containers only works if I power them off first.

[sherbmeister]

Backup for VMs and Containers only works if I power them off first. Is anyone else having this issue? Any suggestions?

Proxmox version: 8.1.3

error I'm getting when trying to backup with powered-on VM/Containers:

NFO: starting new backup job: vzdump 598 --node auriga --compress zstd --mode snapshot --remove 0 --storage ftp-newton --notification-mode auto --notes-template '{{guestname}}'
INFO: filesystem type on dumpdir is 'cifs' -using /var/tmp/vzdumptmp1299033_598 for temporary files
INFO: Starting Backup of VM 598 (lxc)
INFO: Backup started at 2024-01-07 11:56:36
INFO: status = running
INFO: CT Name: pialert
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: pialert
INFO: including mount point rootfs ('/') in backup
INFO: starting first sync /proc/3704676/root/ to /var/tmp/vzdumptmp1299033_598
ERROR: Backup of VM 598 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/3704676/root//./ /var/tmp/vzdumptmp1299033_598' failed: exit code 23
INFO: Failed at 2024-01-07 11:56:52
INFO: Backup job finished with errors
INFO: notified via target `mail-to-root`
TASK ERROR: job errors

 

[Moayad]

Hi,

Have you tried another storage instead of `ftp-newton`?

 

[sherbmeister]

Hi,

Have you tried another storage instead of `ftp-newton`?

Hi,
Yes, I tried with multiple storage, including local.

 

[sherbmeister]

Backup for VMs and Containers only works if I power them off first. Is anyone else having this issue? Any suggestions?

Proxmox version: 8.1.3

error I'm getting when trying to backup with powered-on VM/Containers:

NFO: starting new backup job: vzdump 598 --node auriga --compress zstd --mode snapshot --remove 0 --storage ftp-newton --notification-mode auto --notes-template '{{guestname}}'
INFO: filesystem type on dumpdir is 'cifs' -using /var/tmp/vzdumptmp1299033_598 for temporary files
INFO: Starting Backup of VM 598 (lxc)
INFO: Backup started at 2024-01-07 11:56:36
INFO: status = running
INFO: CT Name: pialert
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: pialert
INFO: including mount point rootfs ('/') in backup
INFO: starting first sync /proc/3704676/root/ to /var/tmp/vzdumptmp1299033_598
ERROR: Backup of VM 598 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/3704676/root//./ /var/tmp/vzdumptmp1299033_598' failed: exit code 23
INFO: Failed at 2024-01-07 11:56:52
INFO: Backup job finished with errors
INFO: notified via target `mail-to-root`
TASK ERROR: job errors

After digging for a bit, I found out that snapshot backups are not supported. Only LVM-Thin and ZFS storage types can support snapshot backups. So a fix is to do backups in "suspend" mode.

Thanks.