Hi I have a system with Ubuntu natty i386 which uses btrfs root. It has worked mostly well, but I have a problem when I want to create new snapshot. Current layout looks something like this $ mount | grep btrfs /dev/sda6 on / type btrfs (rw,noatime,subvolid=258,compress-force=lzo) /dev/sda6 on /home type btrfs (rw,noatime,subvolid=259,compress-force=lzo) /dev/sda6 on /data type btrfs (rw,noatime,subvolid=260,compress-force=lzo) /dev/sda6 on /data/vm type btrfs (rw,noatime,subvolid=261,compress-force=lzo) /dev/sda6 on /boot type btrfs (rw,noatime,subvolid=289,compress-force=lzo) $ sudo btrfs su li / [sudo] password for user: ID 258 top level 5 path subvol/root ID 259 top level 5 path subvol/home ID 260 top level 5 path subvol/data ID 261 top level 5 path subvol/vm ID 289 top level 5 path boot ID 318 top level 5 path subvol/oneiric A few days ago I was able to mount subvolid=0 to a temporary path (e.g. /mnt/tmp), and on that create a snapshot of subvol/root as subvol/oneiric (for test upgrade purposes). That worked well. The problem is now I can't repeat the process $ sudo mount /dev/sda6 -o subvolid=0 /mnt/tmp $ ls /mnt/tmp boot subvol $ ls /mnt/tmp/subvol (hangs at this point, I have to perform hard reset or "reboot -f"). This happens both with natty's 2.6.38-11-generic and kernel 3.0.4 (backported from oneiric). Does anyone know if this is a know problem, or how to get further information to fix this? Thanks, Fajar -- 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
