Peter,

Thanks as always for the information.

Cheers

Matt

----- Original Message ----- From: Learmonth, Peter Peter.Learmonth@netapp.com To: Davies,Matt; Darren Sykes Darren.Sykes@csr.com; Nick Silkey silkey@ece.utexas.edu Cc: steve klise klises@caminomedical.org; toasters@mathworks.com toasters@mathworks.com Sent: Fri Mar 06 21:56:39 2009 Subject: RE: vmware ESX and volumes/aggrs

Hi Matt

This is ESX350-200808401-BG. The issue has to do with how locks are handled during snapshot commits, and other functionality that uses delta files. The fix has nothing to do with VMware tools. For ESX 3.5 updates 1 and 2, you need to install ESX350-200808401-BG (or a bundle that includes it). For ESX 3.5 Update 3, the patch is already there and you just need to activate it.

To activate it, add the following line to /etc/vmware/config prefvmx.consolidateDeleteNFSLocks = "TRUE" and reboot.

Details are in TR3428 http://www.netapp.com/us/library/technical-reports/tr-3428.html

Enjoy!

Peter

-----Original Message----- From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Friday, March 06, 2009 1:10 PM To: Darren Sykes; Nick Silkey Cc: steve klise; toasters@mathworks.com Subject: RE: vmware ESX and volumes/aggrs

Darren,

Do you have any details on the bug that affects removing snapshots from VM's on NFS ?

And do you have any details about which version of VM tools seems to solve the problem, I thought we were upto date with versions and patches, but still seem to seeing similar problems with smvi and NFS datastores.

Thanks

Matt

-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Darren Sykes Sent: 06 March 2009 17:51 To: Nick Silkey Cc: steve klise; toasters@mathworks.com Subject: RE: vmware ESX and volumes/aggrs

Yes, the issues we're seeing are that some machines lock up when undergoing SMVI backups (and not the normal bug that affects removing snapshots from VMs on NFS storage).

The latest theory is that the fixes in the latest version of VMWare tools sorts it out. VMware don't have a firm idea of what's causing it in our environment, but we've seen numerous bugs based on the locking mechanism (which is different in NFS to iSCSI or FC).

Darren.

-----Original Message----- From: Nick Silkey [mailto:silkey@ece.utexas.edu] Sent: 06 March 2009 15:31 To: Darren Sykes Cc: steve klise; toasters@mathworks.com Subject: Re: vmware ESX and volumes/aggrs

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

Darren Sykes wrote:

Having said all that, I think SMVI generally works better with non-NFS

stores; we're still having occasional issues due to NFS related

issues.

Darren --

Can you elaborate on those issues for those of us eyeing both NFS for datastores and SMVI for snap management/operations?

Thanks.

- -- Nick Silkey

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