Backup Procedure

Each of the WD Passport drives has two btrfs partitions on it. The largest partition is meant to be used for raid0, and mounted as a single combined volume for backing up the data. The second partition is a raid1, and is for backing up container data. Mounting one partition will automatically mount the other.

[~]$ lsblk
NAME                    MAJ:MIN RM   SIZE RO TYPE   MOUNTPOINTS
sdf                       8:80   0 931.5G  0 disk
├─sdf1                    8:81   0    30G  0 part
└─sdf2                    8:82   0 901.5G  0 part
sdg                       8:96   0 931.5G  0 disk
├─sdg1                    8:97   0    30G  0 part
└─sdg2                    8:98   0 901.5G  0 part
[~]$ sudo mount /dev/sdf2 /mnt/Backup/

The twardyece-services repository contains a backup script for backing up the media library:

[twardyece-services]$ ./backup.sh &

At this point, we can close the shell and monitor the backup my looking at /var/log/backup/backup-xxxxxx.log.

The repository also contains a script for backing up the container data:

[twardyece-services]$ ./backup-data.sh

Restoring From a Backup

Assuming the backups are in good condition, restoring from a backup is the opposite of sending a backup to the remote server:

[~]$ btrfs send /mnt/Backup/snapshots/2025-02-02/@dataset | \
  btrfs receive /mnt/Mount

The @dataset subvolume will be restored to the state it was in at the time of the 2025-02-02 snapshot, even if the source snapshot is an incremental snapshot.