[Lustre-discuss] Lustre Mount Crashing

[Charles Taylor]

Wow, you are one powerful witch doctor.     So we rebuilt our system  
disk (just to be sure) and that made no difference we still panicked  
as soon as mounted the MDT.   The "-o abort_recov" did not help  
either.   However, your recipe below worked wonders....almost.     Now  
we can mount the MDT but it does not go into recovery.     It just  
shows as "inactive".     We are so close, I can taste it but what are  
we doing wrong now?


[root at hpcmds lustre]# cat /proc/fs/lustre/mds/ufhpc-MDT0000/ 
recovery_status
status: INACTIVE


Which tire do we kick now?   :)

Thanks,

Charlie Taylor
UF HPC Center

On Jun 2, 2008, at 3:36 PM, Andreas Dilger wrote:
>>
>
> If mounting with "-o abort_recovery" doesn't solve the problem,
> are you able to mount the MDT filesystem as "-t ldiskfs" instead of
> "-t lustre"?  Try that, then copy and truncate the last_rcvd file:
>
> 	mount -t ldiskfs /dev/MDSDEV /mnt/mds
> 	cp /mnt/mds/last_rcvd /mnt/mds/last_rcvd.sav
> 	cp /mnt/mds/last_rcvd /tmp/last_rcvd.sav
> 	dd if=/mnt/mds/last_rcvd.sav of=/mnt/mds/last_rcvd bs=8k count=1
> 	umount /mnt/mds
>
> 	mount -t lustre /dev/MSDDEV /mnt/mds
>
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>