I suggest, if you want to be bold with btrfs:
Please use RAID1
Please use timeshift (or even better, snapper)
Please use btrfs send to do backups of snapshots
You may have a look at
But be aware that BackSnap only supports snapper at the moment.btrfs send to backup all snapshots to a external disk.readonly (and timeshift does not take readonly snapshots)
Difficulty: ★★☆☆☆
In most cases, when a btrfs volume breaks, it is possible to recover the data This is because btrfs works with copy on write. This means that new changes are always appended at the end, so to speak. The previously existing data is not actually overwritten. (In reality this is a bit more complicated, but for us here this simplified view is sufficient).
If the file system ge…
good luck
