[GE users] qmaster migration : classic -> berkeleyDB

Orlando Richards orlando.richards at ed.ac.uk
Mon Jan 14 11:53:03 GMT 2008


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Hi all,

We're trying to figure out if it's possible to migrate from a classic 
spooling mechanism to a berkeleyDB method, in order to allow us to 
implement shadow failover.

We hope to do this as part of an upgrade from 6.0u8 to 6.1u3.

I found this thread in the mailing list archives - but there was not 
final outcome posted. Does anyone know if it's possible to migrate from 
a classic spool setup to a BDB, and if so - how?

--
Orlando Richards
University of Edinburgh


> From: tcom <tcom at internode.on.net>
> Content-Type: text/plain
> Date: Tue, 05 Dec 2006 20:16:03 +1030
> Subject: [GE users] qmaster migration : classic -> berkeleyDB
> 
> 
> Thanks everyone for the advice.
> I think I'll go with the BDB. (We'll be setting a dedicated DB server
> soon)
> So back to my original question is there any Classic -> BDB migration
> tools? Or am I missing the point? Is there data I need to migrate from
> the old classic system? I don't believe we rely on any 'historical'
> data.
> Will.
> 
> 
> 
> On Fri, 2006-12-01 at 14:56 +0100, Andreas.Haas at Sun.COM wrote:
>  > On Fri, 1 Dec 2006, Rayson Ho wrote:
>  >
>  > > NFSv4 should be used for Berkeley DB (BDB), it is a requirement of BDB
>  > > to have a full POSIX semantic filesystem.
>  >
>  > Yep. NFSv4 should be working with BDB spooling.
>  >
>  > >
>  > > Are there special reasons to switch to BDB spooling?? While BDB
>  > > spooling is faster than classic spooling, you can only get the
>  > > performance improvement when there are lots and lots of jobs submitted
>  > > to and dispatched by the cluster...
>  >
>  > True. But I recently had a case where classic spooling over
>  > NFS caused myserious timeouts with just a handful of 1000er
>  > array jobs
>  >
>  >     http://gridengine.sunsource.net/issues/show_bug.cgi?id=2108
>  >
>  > Regards,
>  > Andreas
> 


-- 
             --
    Dr Orlando Richards
   Information Services
IT Infrastructure Division
        Unix Section
     Tel: 0131 650 4994

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