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? >> BTW, does ceph provides methods to resolve the condition like that? >> >> the starce file attached. >> >> thanks! >> > > Hi, > > I switched to use the symlinks created by udev in /dev/disk/by-id/ > which contains the hard-disks serial number which will be completely > static, even if a new btrfs filesystem is created. This ensures that > the same partition on the same disk is always used. > > Regards, > Damien > can you mount successfully by using the /dev/disk/by-id/ instead of /dev/sd**? and how to get the hard-disk serial number? I have tried "udevadm info -a -p $(udevadm info -q path -n $btrfs_devs)", but failed to get it. or you should test the condition like that, pull out the disk first and then push it in after few minutes. thanks! -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
