Re: Xen, OpenSSI and DRBD

Is this true that you are mounting /dev/drbd/0 in fstab?  You could
try modifying your initscripts to pass to cfs_setroot /dev/drbd/0
instead of /dev/drbd0.

Roger


On 4/12/06, Owen Campbell <[email protected]> wrote:
>
>
> Hi all,
>
> I have a working OpenSSI cluster of Xen virtual machines with DRBD (all on
> Debian Sarge). I'm trying to create another cluster, but I'm hitting a
> problem with failover that I never had the first time round…….
>
> On my working cluster, the ramdisk was created with drbd devices labelled as
> /dev/drbd/X in the usual places. This was then changed to /dev/drbdX
> everywhere except /etc/fstab and all works fine. On my new cluster, I've
> done exactly the same, but when the init node fails, I get:
>
> drbd0: drbd_nodedown: Signaling receiver thread.
>
> drbd0: drbd_set_state: (mdev->this_bdev->bd_contains == 0) in
> drivers/block/d/drbd_fs.c:702
>
> drbd0: Secondary/Unknown --> Primary/Unknown
>
> drbd0: Doing CLMS nodedown callback for service 9
>
> EXT3-fs: INFO: recovery required on readonly filesystem.
>
> EXT3-fs: write access will be enabled during recovery.
>
> kjournald starting.  Commit interval 5 seconds
>
> EXT3-fs: recovery complete.
>
> write handler down off 600000 len 10000
>
> EXT3-fs: mounted filesystem with ordered data mode.
>
> fsck 1.35 (28-Feb-2004)
>
> ERROR: Couldn't open /dev/null (No such file or direct)
>
> e2fsck 1.35 (28-Feb-2004)
>
> fsck.ext3: No such file or directory while trying to open /dev/drbd0
>
> The superblock could not be read or does not describe a correct ext2
>
> filesystem If the device is valid and it really contains an ext2
>
> filesystem (and not swar ufs or something else), then the superblock
>
>  is corrupt, and you might try rung e2fsck with an alternate superblock:
>
>  e2fsck -b 8193 <device>
>
> I've also tried modifying the contents of the ramdisk (by mounting it on a
> loop device) to remove all traces of /dev/drbd/ but this had not effect.
>
> Any ideas?
>
>
> Owen


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