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Setup System Backups.md

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Mounting a USB drive for regular backups

Format and mount the backup drive

Step 1

Plug the USB drive into your system. In Proxmox, go to disks and note the name of the disk, alternatively you can use fdisk -l in the proxmox shell. Mine is /dev/sdb

Step 2

Set the file system before mounting it, this will erase the drive

mkfs.ext4 /dev/sdb

Step 3

Create a backups directory to mount to

mkdir /mnt/backups

Step 4

Mount the backup drive to the directory

mount /dev/sdb /mnt/backups

Step 5

Now add the USB drive mount point in the Proxmox web UI to use for backups. This is done in Datacenter / Storage. Select *Directory* from the *Add* pulldown, then enter the mount point you created and configure it with a content type of VZDump backup file.

Create an fstab entry, so the drive is automatically mounted at system reboots

Step 1

Determine the UUID of the drive. You can use...

  • ls -l /dev/disk/by-uuid or lsblk -f
  • The UUID will look like...``063c75bc-bcc6-4fa5-8417-a7987a26dccb`

Step 2

Add an entry in /etc/fstab using the UUID to mount the drive when the system boots. The following format is used for /etc/fstab...

[Device] [Mount Point] [File System Type] [Options] [Dump] [Pass]

Using UUID, the entry will look something like...

UUID=063c75bc-bcc6-4fa5-8417-a7987a26dccb /mnt/backups ext4 defaults,noatime,nofail 0 2

The USB now will be mounted when the system boots up, and can be mounted manually with the mount command if for some reason it disconnects.

Make sure Proxmox knows the backups directory is an externally managed mount point and consider the storage offline if it isn't mounted

Edit storage.cfg found in /etc/pve/

add

is mountpoint 1 to the directory, for example:

dir: backups
	path /mnt/backups
	content backup,images
	prune-backups keep-all=1
	shared 0
	is_mountpoint 1