On Fri, Nov 27, 2015 at 22:06 Christoph Anton Mitterer <calestyo@xxxxxxxxxxxx> wrote: > > Hey. > > Not sure whether this is intended or not, but it feels at least > somewhat strange: > > Consider I have a readonly snapshot (the only subvol here): > /btrfs/snapshots/ro-snapshot > now I want to move it to the dir: > /btrfs/snapshots/foo/ > i.e. > mv /btrfs/snapshots/ro-snapshot > /btrfs/snapshots/foo/ > but the mv complains about read-only filesystem. > Not a developer, but I believe this is intended behavior. Changing the direct parent directory of a subvolume is not a read only operation: it involves modifying the '..' directory entry. Renaming the subvolume, or moving the parent directory, modify the overall fs-hierachy, but do not modify the subvol. The same is true for normal directories: mkdir /tmp/dir1 chmod -w /tmp/dir1 mv /tmp/dir1 /tmp/dir2 ## allowed mkdir /tmp/dir3 mv /tmp/dir2 /tmp/dir3/dir2 ## Permission denied ~ Noah -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
