On Jul 8, 2014, at 2:50 PM, Stefan G. Weichinger <lists@xxxxxxxx> wrote: > Am 08.07.2014 22:20, schrieb Chris Murphy: >> >> On Jul 8, 2014, at 1:07 PM, Stefan G. Weichinger <lists@xxxxxxxx> wrote: >>> >>> Can you tell me where the problem/solution might be located? >>> Is it a known behavior in a way … ? >> >> It's known. Ubuntu has a patch so that mount shows subvolume names. >> This information is probably available on Gentoo with cat /proc/self/mountinfo. > > > Unfortunately no. > > See example from my laptop: > > # grep btrfs /proc/self/mountinfo > 14 0 0:14 /rootfs / rw,noatime shared:1 - btrfs /dev/sda3 > rw,compress=lzo,ssd,space_cache > > 51 14 0:14 / /mnt/uncow rw,noatime shared:19 - btrfs /dev/sda3 > rw,compress=lzo,ssd,space_cache > > 156 14 0:35 / /home/sgw rw,noatime shared:117 - btrfs > /dev/mapper/_dev_sda4 rw,compress=lzo,ssd,space_cache Well it looks to me you have used mount -o subvol=rootfs for the first instance, but you've not mounted a subvolume at /mnt/uncow and /home/sgw. What kernel version is this? And I thought the kernel was entirely responsible for the contents of /proc? http://ur1.ca/hpk57 The fourth column lists subvol names. > > What does the Ubuntu patch apply to? util-linux? No idea. Chris Murphy-- 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
