Can I change the location of BTRFS snapshots. I installed CachyOS, and it automatically setup BTRFS subvols.
This is the layout ๐
| 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 ?
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.
Yeah, that's what I'm thinking too.