[PVE-User] LXC mount point not in backup

Fabian Grünbichler f.gruenbichler at proxmox.com
Fri Jan 29 15:59:50 CET 2021

> Petric Frank <pfrank at gmx.de> hat am 29.01.2021 13:36 geschrieben:
> Hello,
> in my config i have a mountp point defined as:
>   mp0: /storage/nextcloud-gz,mp=/nextcloud,ro=0,backup=1
> Despite the option "backup=1" it is not included in an backup. The backup screen log:
> --------------------------- cut --------------------------
> INFO: starting new backup job: vzdump 200 --compress gzip --node proxmox-gz --remove
> 0 --mode stop --storage zfs-raid
> INFO: filesystem type on dumpdir is 'zfs' -using /var/tmp/vzdumptmp31209_200 for
> temporary files
> INFO: Starting Backup of VM 200 (lxc)
> INFO: Backup started at 2021-01-29 13:23:05
> INFO: status = stopped
> INFO: backup mode: stop
> INFO: ionice priority: 7
> INFO: CT Name: nextcloud
> INFO: including mount point rootfs ('/') in backup
> INFO: excluding bind mount point mp0 ('/nextcloud') from backup (not a volume)
> INFO: creating vzdump archive '/storage/vz/dump/vzdump-
> lxc-200-2021_01_29-13_23_05.tar.gz'
> INFO: Total bytes written: 3123005440 (3.0GiB, 21MiB/s)
> INFO: archive file size: 1.39GB
> INFO: Finished Backup of VM 200 (00:02:27)
> INFO: Backup finished at 2021-01-29 13:25:32
> INFO: Backup job finished successfully
> --------------------------- cut --------------------------
> As you can see the line below states that as "not a volume":
> INFO: excluding bind mount point mp0 ('/nextcloud') from backup (not a volume)
> Is there a way to include the mount point in a backup ?

no. the assumption here is that you are using a bind mount to pass in something that is not managed by PVE (e.g., a dir used in more than one container, some network share mounted on the host, ..) and thus also not included in backups.

> Additional question: What is the behaviour of PBS in this case ?

if you of mean of vzdump when backing up to PBS - identical. of course if you run proxmox-backup-client from within the container you can choose yourself which mountpoints are included or not..

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