Mount root subvolume
mount -t btrfs -o subvolid=5,noatime,nodiratime,noacl,nossd 'UUID=68706ead-a626-4209-b3d0-1187b835f803' /mnt/btrfs
List BTRFS subvolumes
btrfs subvolume list -t --sort=path /mnt/btrfs
ID gen top level path
-- --- --------- ----
3637 212647 5 containers
8870 187149 3637 containers/alpine-nodejs/rootfs
8578 188944 3637 containers/build/rootfs
8858 212455 3637 containers/google/rootfs
11829 206650 3637 containers/jupyter/rootfs
8575 184082 3637 containers/pocketmine/rootfs
12021 220962 3637 containers/vcs/rootfs
8886 188953 3637 containers/vscode/rootfs
260 220814 5 data
1455 184009 260 data/debian
12022 220958 260 data/git
1443 220961 260 data/home
1447 220933 260 data/media/Backups
1448 211218 260 data/media/Documents
1449 213248 260 data/media/Movies
1450 201659 260 data/media/Music
1451 213247 260 data/media/Pictures
1452 212427 260 data/media/Server
1453 220653 260 data/media/Users
1454 213295 260 data/media/xxx
1444 180481 260 data/mysql
1445 220954 260 data/svn
1446 183953 260 data/www
1457 180788 5 overlay
1456 188580 5 rootfs
1460 213802 5 snaps
12451 213802 1460 snaps/Users
Create new snapshot
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Users /mnt/btrfs/snaps/Users-new
btrfs subvolume snapshot -r /mnt/btrfs/data/git /mnt/btrfs/snaps/git-new
btrfs subvolume snapshot -r /mnt/btrfs/data/svn /mnt/btrfs/snaps/svn-new
btrfs subvolume snapshot -r /mnt/btrfs/data/home /mnt/btrfs/snaps/home-new
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Pictures /mnt/btrfs/snaps/Pictures-new
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Movies /mnt/btrfs/snaps/Movies-new
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Music /mnt/btrfs/snaps/Music-new
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Documents /mnt/btrfs/snaps/Documents-new
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Server /mnt/btrfs/snaps/Server-new
btrfs subvolume snapshot -r /mnt/btrfs/data/media/Backups /mnt/btrfs/snaps/Backups-new
btrfs subvolume snapshot -r /mnt/btrfs/data/mysql /mnt/btrfs/snaps/mysql-new
btrfs subvolume snapshot -r /mnt/btrfs/data/www /mnt/btrfs/snaps/www-new
sync
Just delete old backups
btrfs subvolume delete -vc /mnt/btrfs/snaps/Users
mv /mnt/btrfs/snaps/Users-new /mnt/btrfs/snaps/Users