[Lustre-discuss] Unable to mount OSTs

[Andreas Dilger]

On 2010-12-15, at 22:50, Andrus, Brian Contractor wrote:
> I did change IPs of the NID for 2 or our lustre filesystems.
> Made appropriate changes to each ost. One thing I did that I probably shouldn't have was doing a --writeconf on the OSTs. Now I see:
>  
> Flags:      0x142
>               (OST update writeconf )
> and I cannot mount them. I get:
>  
> mount.lustre: mount /dev/VG_lustre/scratch_ost1 at /mnt/lustre/scratch/ost1 failed: Function not implemented
> however I do seem to be able to mount the OSTs that I didn't do --writeconf on.

You can binary edit this flag in the "CONFIGS/mountdata" file on each OST.
Alternately, you could follow the process in the manual, and run writeconf on the MGS and MDS as well, and then the OSTs should be able to register again.

> I see in syslog:
> LustreError: 6182:0:(obd_mount.c:1097:server_start_targets()) Required registration failed for nscratch-OST0001: -38

Cheers, Andreas
--
Andreas Dilger
Lustre Technical Lead
Oracle Corporation Canada Inc.