On May 21, 2013, at 8:06 AM, Martin <m_bt...@ml1.co.uk> wrote: > On 21/05/13 04:37, Chris Murphy wrote: >> >> I'm going to contradict myself and point out that mount with label or >> UUID is made unambiguous via either the default subvolume being >> mounted, or the -o subvol= option being specified. The volume label >> and UUID doesn't apply to umount because it's an ambiguous command. >> You'd have to umount a mountpoint, or possibly a subvolume specific >> UUID. > > I guess the ideas of labels and UUID and multiple devices came out a few > years later?... For btrfs, umount needs to operate on the default subvol > but with the means for also specifying a specific subvol if needed.
Yeah and I think specifying -o for umount isn't what devs are interested in doing, and I think that's understandable. But I'm pretty sure there are btrfs subvolume UUIDs now? So even if umount doesn't support -o, it should still support /dev/disk/by-uuid/xxxxxxxxxxx just as it does /dev/sda1 or whatever. Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
