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List:       toasters
Subject:    RE: vmware on nfs stability issues
From:       "Willeke, Jochen" <Jochen.Willeke () wincor-nixdorf ! com>
Date:       2008-03-26 16:10:35
Message-ID: 712D65DA10168A4DBFB5C801E3971BAA88F8EF () DEEXVS13 ! wincor-nixdorf ! com
[Download RAW message or body]

Hi toasters,

don't know what experience you have made with the netapp way to deal
with the timeouts under linux. We had the problem with SLES9 SP3 systems
running on ESX with netapp storage. Every time we had a cluster-takeover
on a pair of filers hosting storage with vmwares in it (e.g. during
ontap updates) the SLES9 systems did have read-only disks.

I did it the vmware-way and installed a new mpt-scsi driver
(mptscsi-gosd-3.02.62-2vmw.i386.rpm) which can be download from vmware.
After the installation you only have to reastablish the link of the
initrd to the new one (the old one is still present, of course) and
reboot the machine.

Works like a charme and seems more smooth than doing the udev-thing.

Best Regards

Jochen

-----Original Message-----
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com]
On Behalf Of Pascal Dukers
Sent: Saturday, March 22, 2008 11:52 AM
To: toasters@mathworks.com
Subject: RE: vmware on nfs stability issues


Thank you all for your help. I will share a few answers I received, but
have
not been posted here:

A new NetApp article from last week on how to set timeouts for the
different
guest os I have:

https://now.netapp.com/Knowledgebase/solutionarea.asp?id=kb37986

Also some tuning of the following parameters on the esx servers can be
done:

          o NFS.HeartbeatFrequency
          o NFS.HeartbeatTimeout
          o NFS.HeartbeatMaxFailures

I have been told that with the default settings the timeout seems to be
30
seconds.


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