[Lustre-discuss] ost pools

[Kevin Van Maren]

That's more likely if you file a bug report at bugzilla.lustre.org.
Even better if you modify "check_and_complete_ostname" in lctl
to handle your OST names and submit a patch with the bug.

Kevin


Stu Midgley wrote:
> Right, so I assume this means it will be fixed in some future version
> of lustre and until then I can't have those nodes in the pool until
> then?
>
>
> On Tue, Aug 10, 2010 at 3:41 PM, Andreas Dilger
> <andreas.dilger at oracle.com> wrote:
>   
>> On 2010-08-10, at 01:20, Stu Midgley wrote:
>>     
>>> # lctl pool_add l1.default l1-OST[10]
>>> OST l1-OST0010_UUID is not part of the 'l1' fs.
>>> pool_add: No such file or directory
>>>
>>>
>>> All the nodes that have the "new-style" names went into the pool just
>>> fine.  all the nodes with "old-style" names will not go into the pool.
>>>
>>> eg. ost_011_UUID
>>>       
>> I had a quick look at lctl::jt_pool_cmd(), and it looks like this checking is done in userspace in check_and_complete_ostname(), to avoid bad interactions with invalid OST names, and to allow "short" forms of the OST to be used (e.g. OST0001 instead of l1-OST0001_UUID).
>>
>> That said, it should also be possible to have lctl scan the existing OST UUID array via setup_obd_indexes(param->obd_uuid = ost_name) to see if the OST name is actually valid before adding it to the pool.  That will iterate over the list of OSTs, and use llapi_uuid_match() to see if the OST name is valid.
>>
>>     
>>>> We have a lustre file system which started life at V1.4 and is now at V1.8.
>>>>  I'm keen to use ost pools, but I can't actually add nodes to the pool.  The node names are not in a format that lctl pool_add likes
>>>>
>>>> ost_011_UUID                3.3T        3.0T      331.5G  90% /l1[OST:10]
>>>>
>>>> lctl pool_add l1.default "OST[10]"
>>>> OST l1-OST0010_UUID is not part of the 'l1' fs.
>>>> pool_add: No such file or directory
>>>>
>>>> How do I get nodes with these names added to a pool?
>>>>
>>>> Thanks.
>>>>         
>>> --
>>> Dr Stuart Midgley
>>> sdm900 at gmail.com
>>> _______________________________________________
>>> Lustre-discuss mailing list
>>> Lustre-discuss at lists.lustre.org
>>> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>>>       
>> Cheers, Andreas
>> --
>> Andreas Dilger
>> Lustre Technical Lead
>> Oracle Corporation Canada Inc.
>>
>>
>>     
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