On Wednesday, June 8, 2016, cdlscpmv <[email protected]> wrote:
>
> Hi!
>
> It happened that I set the immutable flag (via `chattr +i`) on a subvolume.
> Then I made a read-only snapshot of that subvolume. Now I can't remove
> this snapshot.
>
> #> btrfs subvolume delete my_snapshot
> Delete subvolume (no-commit): 'my_snapshot'
> ERROR: cannot delete 'my_snapshot': Operation not permitted
> #> chattr -i my_snapshot
> chattr: Read-only file system while setting flags on my_snapshot
> #> btrfs --version
> btrfs-progs v4.4.1
> #> uname -r
> 4.5.2
>
> Is there any other way to do this? Or is it a bug?
>
Try
#> btrfs property set my_snaphot ro false
#> chattr -i my_snapshot
#> btrfs sub del my_snapshot
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