How to backup lxc by excluding some folders from VM?

Question

Backup

Proxmox has a backup - snapshot , but you need to exclude some folders, how to do it?
Proxmox+lxc

Answer 1

Disks are located here by default

/var/lib/vz/images/100/disk.raw

We get a list of all files connected in this way:

#losetup -a

Mount file as a block device

#losetup /dev/loop0 /path/to/disk.raw

Mount to work with FS

#mount /dev/loop0 /mnt/

Delete block device

#losetup -d /dev/loop0

Unmount

#umount /mnt

PS If lxc is running, then we look at the list of devices working with losetup

#losetup -a

and mount

#mount /dev/loop0 /mnt

Answer 2

this is a snapshot, add disks, mount them in a directory and exclude these disks from backups.