On Jul 28, 2010, at 3:11 PM, sol wrote:

> A partial workaround was to turn off access time on the share and to mount 
> with 
> noatime,actimeo=60
> 
> But that's not perfect because when left along the VM got into a "stuck" 
> state. 
> I've never seen that state before when the VM was hosted on a local disk. 
> Hosting VMs on NFS is not working well so far...

We host a lot of VMs on NFS shares (from a 7000 series) on ESXi with no issues 
other than an occasional Ubuntu machine that would do something similar to what 
you describe.  For us it was this:

http://communities.vmware.com/thread/237699?tstart=30

when the timeout is set to 180 the issue has been completely eliminated.  The 
current ESXi (and I think all versions of 4) VMWare tools does this properly.

Also, EMC and NetApp have this description of using NFS shares for VMWare:

http://virtualgeek.typepad.com/virtual_geek/2009/06/a-multivendor-post-to-help-our-mutual-nfs-customers-using-vmware.html

which by and large applies to any NFS server rather than just their equipment.  
We found it helpful, but nothing is that surprising in it.

Good luck,
Ware
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