Unable to delete or change ro flag on subvolume/snapshot

Jon Ander MB <jonandermonleon@xxxxxxxxx> · Wed, 7 Aug 2019 10:37:43 +0200

Hi!
I have a snapshot with the read only flag set and I'm currently unable
to delete it or change the ro setting
btrfs property set -ts /path/t/snapshot ro false
ERROR: failed to set flags for /path/t/snapshot: Operation not permitted

Deleting the snapshot is also a no-go:

btrfs subvolume delete /path/t/snapshot
Delete subvolume (no-commit): '/path/t/snapshot'
ERROR: cannot delete '/path/t/snapshot': Operation not permitted

The snapshot information:

btrfs subvolume show /path/t/snapshot
/path/t/snapshot
        Name:                   snapshot
        UUID:                   66a145da-a20d-a44e-bb7a-3535da400f5d
        Parent UUID:            f1866638-f77f-e34e-880d-e2e3bec1c88b
        Received UUID:          66a145da-a20d-a44e-bb7a-3535da400f5d
        Creation time:          2019-07-31 12:00:30 +0200
        Subvolume ID:           23786
        Generation:             1856068
        Gen at creation:        1840490
        Parent ID:              517
        Top level ID:           517
        Flags:                  readonly
        Snapshot(s):

Any idea of what can I do?

Regards!

-- 
--- Jon Ander Monleón Besteiro ---