On Wed, 12 Oct 2011, huang jun wrote: > 2011/10/12 Thomas Mueller <thomas@xxxxxxxxxxxxxx>: > > On 12.10.2011 10:22, huang jun wrote: > >> > >> 2011/10/12 Damien Churchill<damoxc@xxxxxxxxx>: > >>> > >>> On 12 October 2011 02:22, huang jun<hjwsm1989@xxxxxxxxx> wrote: > >>>> > >>>> I use the UUID option to mount the btrfs disk,but i can not success. > >>>> first, the disk is /dev/sdd1 > >>>> then, i pull out the disk > >>>> and after mintues, pushed it again,at this time, it changes to /dev/sde1 > >>>> at this time, if we use /etc/init.d/ceph restart, it will failed, for > >>>> the current mount option is likely "/dev/sd** " > >>>> but the UUID didn't change. > >>>> why i can not mount it successfuly? Maybe a dumb question, but I'm assuming you've done 'btrfsctl -a' or 'btrfs device scan'? Do you see lines like [ 237.100670] device fsid 78a8ca36-478b-402b-9110-b2be4915d5f3 devid 1 transid 4107 /dev/sde1 with the UUID in question in the dmesg output? sage