====== Backup ======

===== VM Backup Fleecing =====

[[https://pve.proxmox.com/wiki/Backup_and_Restore]]

[[https://localhost:8006/pve-docs/chapter-vzdump.html#_vm_backup_fleecing|VM Backup Fleecing]]

  On a storage that’s not thinly provisioned, e.g. LVM or ZFS without the sparse option, the
  full size of the original disk needs to be reserved for the fleecing image up-front. On a
  thinly provisioned storage, the fleecing image can grow to the same size as the original
  image only if the guest re-writes a whole disk while the backup is busy with another disk.

Create ZFS sparse volume:

<code bash>
zfs create -v nvmpool/backup-fleecing -o compression=on
</code>

Add new storage using Proxmox GUI - do not forget to enable THIN provisioning!

==== ERROR: job failed with err -13 - Permission denied ====

<code>
INFO:  21% (119.4 GiB of 564.0 GiB) in 40m 52s, read: 39.2 MiB/s, write: 0 B/s
ERROR: job failed with err -13 - Permission denied
INFO: aborting backup job
</code>

  * [[https://forum.proxmox.com/threads/permission-denied-mid-backup-huh.153400/#post-699111|permission denied ... mid-backup. huh?]]
  * [[https://forum.proxmox.com/threads/vm-backup-error-job-failed-with-err-13-permission-denied.146695/|VM Backup ERROR: job failed with err -13 - Permission denied]]

Fix was dded to ''pve-qemu-kvm=8.1.5-6''

<code bash>
apt install pve-qemu-kvm=8.1.5-6
</code>