Can I change the location of BTRFS snapshots. I installed CachyOS, and it automatically setup BTRFS subvols.

This is the layout 👇

ID gen parent top level path
258 1773 5 5 @root
259 1601 5 5 @srv
260 1789 5 5 @cache
261 1785 5 5 @tmp
262 1797 5 5 @log
263 26 377 377 var/lib/portables
264 26 377 377 var/lib/machines
265 1791 377 377 .snapshots
266 1427 378 378 @home/.snapshots
377 1797 5 5 @
378 1797 5 5 @home

According to Arch wiki https://wiki.archlinux.org/title/Snapper#Creating_a_new_configuration

Create a subvolume at /path/to/subvolume/.snapshots where future snapshots for this configuration will be stored. A snapshot’s path is /path/to/subvolume/.snapshots/#/snapshot, where # is the snapshot number.

From which I understand that if I created a snap of /home (@home), it will save in /home/.snapshots (@home/.snapshots).

So, CachyOS configured to save snaps to separate subvol.

But, what I want to do is, Instead of just saving it in separate subvol, i want snaps to be saved on different btrfs partition. Maybe @home/.snapshots but on different partition.

Is that possible ?

  • ikidd@lemmy.worldEnglish
    2·
    5 days ago

    Since snapshots are just a feature of COW where it shifts the newly written or changed blocks to a different reference point on the partition, I can’t see that you can create them on a different partition. I could be wrong.