Moving the BackupPC volume to an LVM

If you wish to move BackupPC to a different array of disks with LVM and XFS (highly recommended), then you have to do the following:

Let’s assume /dev/mapper/backuppc–vg-backuppc–lv is our Logical Volume

1. Add another disk to your VM/CT

2. Reboot it

3. Install the required dependencies:

apt update -y
apt install xfsprogs -y

4. Create a Volume Group and Logical Volume with your disk in it

5. Create an XFS Filesystem in /dev/mapper/backuppc–vg-backuppc–lv

mkfs.xfs /dev/mapper/backuppc--vg-backuppc--lv

6. Copy all the data in /var/lib/backuppc to a secondary directory

mkdir /opt/backuppcdata
# Use Archive mode to preserve links and most data
rsync -avh /var/lib/backuppc /opt/backuppcdata

7. Mount your /dev/mapper/backuppc–vg-backuppc–lv to the /var/lib/backuppc directory by adding it to your /etc/fstab file as an XFS Filesystem.

# /etc/fstab
# BackupPC Volume
/dev/mapper/backuppc--vg-backuppc--lv /var/lib/backuppc xfs     defaults        0 2

8. Mount the path

mount /var/lib/backuppc

9. Copy your data back to the new directory

rsync -avh /opt/backuppcdata /var/lib/backuppc

Done. Rebooting is recommended.