Lustre discuss - Oct 2010 - lustre 2.0 interop issue

Hi All,

looks, i have discovered interop issue and bug in documentation for lustre 2.0


according code, ''quota_type'' configuration parameter handled
by mdd module
>>
bash-3.2$ grep -rn quota_type mdd mdt
mdd/mdd_lproc.c:308:        { "quota_type",     
mdd_lprocfs_quota_rd_type,
>>
, but for manual from 
http://wiki.lustre.org/manual/LustreManual20_HTML/ConfiguringQuotas.html#50548851_pgfId-1288197
say about mdt.quota_type parameter
>>>
To enable quotas automatically when the file system is started, you must set the
__mdt.quota_type___ and ost.quota_type parameters, respectively, on the MDT and
OSTs.
The parameters can be set to the string u (user), g (group) or ug for both users
and groups.
>>>
that  looks is correct for lustre 1.x, but not for lustre 2.0.


And lustre 2.0 not able to start with old FS:
>>>  kernel: LustreError:
4596:0:(obd_config.c:1108:class_process_proc_param()) content-MDT0000: unknown
param quota_type=ugv2
>>>  kernel: LustreError:
4596:0:(obd_config.c:1329:class_config_llog_handler()) Err -38 on cfg command:
>>>  kernel: Lustre: cmd=cf00f 0:content-MDT0000 1:mdt.quota_type=ugv2



--------------------------------------
Alexey Lyashkov
alexey.lyashkov at clusterstor.com

Hi Alexey,

On Fri, Oct 01, 2010 at 06:58:13PM +0300, Alexey Lyashkov
wrote:
> according code, ''quota_type'' configuration parameter
handled by mdd module
> >>
> bash-3.2$ grep -rn quota_type mdd mdt
> mdd/mdd_lproc.c:308:        { "quota_type",     
mdd_lprocfs_quota_rd_type,
> >>
> 
> , but for manual from 
>
http://wiki.lustre.org/manual/LustreManual20_HTML/ConfiguringQuotas.html#50548851_pgfId-1288197
> say about mdt.quota_type parameter
You are indeed right. I''ll make sure the documentation is updated with
the
correct upgrade procedure. I think there is also a problem with the group
upcall (l_getgroups in 1.8 vs l_getidentity in 2.0).
Thanks.

Cheers,
Johann