2

If I create a snapshot of root with: btrfs subvolume snapshot -r / /snapshot-$(date +%s)

I can then see this snapshot with ls /

How do I make snapshots that are isolated from the volume that they were created for?

1

So how I opted to do this was by editing the root subvolume (0):

  1. Mount the root subvolume: mount -t btrfs -o subvolid=0 /dev/sdXX /mnt
  2. Created the snapshot subvolume: cd /mnt; btrfs subvolume create @snapshots

Did a preliminary ls / and noticed I didn't see the subvolume; great, now onto next step; a test!

To create isolated snapshots that aren't visible from the original subvolume mount the created subvolume (@snapshot), create the snapshot, and then unmount it.

  1. Mount the snapshot subvolume; get the subvolume ID with btrfs subvolume list / and then mount it: mount -t btrfs -o subvolid=<id> /dev/sdXX /mnt
  2. Create the snapshot of / into /mnt with: btrfs subvolume snapshot -r / /mnt/snapshot_$(date +%s)

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.