Hi Matthias (and Brent),
thanks for the reply.
We have upgraded some of our 5y old P4 disk servers with 16 disks with 1 TB
each. The one P4 CPU (plus reasonable network, Raid controllers, RAM, ...) is
still ok for NFS but requires 32 bit.
Cheers, Th.
Am 10.02.2010 um 14:52 schrieb Matthias Schroeder:
> Thomas Kress wrote:
>> Hello All,
>> at RWTH Aachen, Germany, we are experiencing frequent kernel
>> freezings of our (a bit older) data servers when using (SL5,) the xfs
>> file system and NFS4 with i386 data server architectures. No problems
>> with 64 bit servers.
>
> You are aware that xfs is not really supported on 32 bit systems?
>
>> From the /var/log messages we think that the problem is due to a
>> smaller stack size for the i386 kernel as described here:
>> http://www.mythtv.org/pipermail/mythtv-users/2005-May/089314.html
>> Any chance that for future SL kernel upgrades 8k instead of 4k stack
>> size is used also for the 32 bit architecture (kernel parameter
>> CONFIG_4KSTACKS=n)
>
> Epsilon, I would say.
>
>> or any idea how to cure the problem ?
>
> Go to 64 bit.
>
>> In our
>> opinion ext3 is not a very good choice for big data servers in case
>> of fs crashes.
>
> Why insist on a 32 bit system for 'a big data server'???
>
> Matthias
>
>> I found this issue discussed already in Jan 2006 on this list but I
>> wonder whether there was any progress during the last four years.
>> Thanks & cheers, Thomas.
>> -- Mit besten Gruessen/With kind regards,
>> Thomas Kress, RWTH Aachen, III. Physikalisches Institut, Lehrstuhl B Office
>> Aachen: 28A 206, Phone: +49 241 80 27281, Fax: ... 22244 Office CERN: B40
>> 4-A16, Phone: +41 22 76 71682, Fax: ... 78940 Email:
>> [email protected]<mailto:[email protected]>
>> ; [email protected]<mailto:[email protected]> Signed with a
>> certificate issued by GridKa-CA (GermanGrid)
>
--
Mit besten Gruessen/With kind regards,
Thomas Kress, RWTH Aachen, III. Physikalisches Institut, Lehrstuhl B
Office Aachen: 28A 206, Phone: +49 241 80 27281, Fax: ... 22244
Office CERN: B40 4-A16, Phone: +41 22 76 71682, Fax: ... 78940
Email: [email protected] ; [email protected]
Signed with a certificate issued by GridKa-CA (GermanGrid)
