[Lustre-discuss] OSTs not activating following MGS/MDS move

Colin Faber cfaber at gmail.com
Tue Feb 26 09:30:29 PST 2013


Hi,


As a follow up (for archival reasons) the issue Patrick experienced was 
CATALOG file corruption. Truncation of the CATALOG file on the MDS via 
ldiskfs mount corrected his problem.

-cf


On 02/26/2013 08:43 AM, Patrick Shopbell wrote:
> Hello everyone,
> I am having an odd problem here, on our small Lustre
> installation. We have a single MGS/MDS and 3 OSS's with
> 7 OSTs total. I just tried moving the MDS/MGS to a faster
> machine, following the instructions in sections 17.3 and 17.4
> of the Lustre manual: with the system offline, I mounted
> the file systems as "ldiskfs" and then used the Lustre tar
> command to make a copy of everything. I checked a bunch of the
> xattrs - all looked to match fine.
>
> Finally, I reset the system configs on the MDS/MGS with:
>
>> tunefs.lustre --writeconf /dev/md126
> and on the OSSs with something like:
>
>> tunefs.lustre --writeconf /dev/sdb
>> tunefs.lustre --erase-param --mgsnode=192.168.30.113 at tcp --index=0 --writeconf /dev/sdb
> where I kept the indices the same as in my original setup.
>
> I can now mount the MGS/MDS, and then mount the OSTs. However,
> I get these three errors on the MGS, when an OST mounts:
>
> Feb 25 22:38:38 yupana kernel: LustreError: 3636:0:(lov_log.c:155:lov_llog_origin_connect()) error osc_llog_connect tgt 6 (-107)
> Feb 25 22:38:38 yupana kernel: LustreError: 3636:0:(mds_lov.c:873:__mds_lov_synchronize()) lustre-OST0006_UUID failed at llog_origin_connect: -107
> Feb 25 22:38:38 yupana kernel: LustreError: 3636:0:(mds_lov.c:903:__mds_lov_synchronize()) lustre-OST0006_UUID sync failed -107, deactivating
>
> And when I run 'lctl dl', the OSTs are apparently all inactive:
>
>   5 IN osc lustre-OST0000-osc-MDT0000 lustre-MDT0000-mdtlov_UUID 5
>
> Any ideas what I need to do to activate these? I am running
> Lustre 2.3 on all nodes. I can see the file system on a client
> and, it seems like, read files, but I cannot create any new
> files, presumably because the OSTs are not active.
>
> Thanks for your suggestions,
> Patrick
>
> *---------------------------------------------------------------*
> | Patrick Shopbell           Department of Astronomy            |
> | pls at astro.caltech.edu      Mail Code 249-17                   |
> | (626) 395-4097             California Institute of Technology |
> | (626) 568-9352  (FAX)      Pasadena, CA  91125                |
> | WWW: http://www.astro.caltech.edu/~pls/                       |
> *---------------------------------------------------------------*
>
>
>
>
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