[GE users] BDB spooling with NFSv4

Joachim Gabler Joachim.Gabler at Sun.COM
Thu Feb 3 19:29:13 GMT 2005


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Andy Schwierskott schrieb:

> Craig,
>
>> On Thu, 2005-02-03 at 09:36, Roland Dittel wrote:
>>
>>> Hi all,
>>>
>>> I've run a simple test with bdb spooling on a NFSv4 share and it seems
>>> to be working. The qmaster started up, I've submitted some jobs and it
>>> was possible to start the qmaster on another host after changing the
>>> hostname in act_master.
>>>
>>> The qmaster switching only works on hosts of the same architecture.
>>> Starting the qmaster on another architecture as the host on which 
>>> the db
>>> was result in the error message:
>>> 02/03/2005 17:29:59|qmaster|host1|E|couldn't open database environment
>>> for server "local spooling", directory
>>> "/net/nfsserver/nfsv4export/default/spool/spooldb": (-30978)
>>> DB_RUNRECOVERY: Fatal error, run database recovery
>>>
>>> Regards,
>>> Roland
>>>
>>
>> Thanks for the providing the results of the test.  Can
>> you provide details on the NFSv4 client and server platform?
>
>
> All machines run a Solaris 10 build one build version prior to the one 
> which
> is no available from Sun.
>
> The NFS server is a Sun W2100z (Opteron).
>
> The NFS clients where a Sun v40z (Opteron) and a Sun Blade 1500 (Sparc).
>
>> You cannot move BDB databases between architectures unless
>> you are really lucky.  We use BDB as apart of our cluster
>> management system, but we can't have one instance control
>> multiple architectures because of this.
>
>
> I assume the database could be converted - anyone is having more info 
> about
> it?

Moving the database to another platform should be possible by doing a 
backup (db_dump) and restore (db_load).

   Joachim

>
> Andy
>
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