Hi Everyone

I’m seeing a weird issue with 3 particular KVM VMs whereby the virtual machine 
appears to simply stop responding to network traffic (unpingable). The weird 
thing is that as soon as I jump into the hypervisor and run ‘vmadm info 
<uuid>’, the machine immediately starts responding to pings.

I obtained the stacks of the qemu process, but accidentally ran vmadm info 
before I went further.

Stacks can be found here: http://pastebin.com/8FBxrcJJ

Does anyone have any suggestions/further debugging steps? Next time it happens 
I’ll see if I can obtain lock info and anything else I can think of.

The KVM machines are running Server 2012 R2 64-bit (there are other machines 
also running this OS that aren’t having issues) and the issue is occurring on 
two separate hosts.

Build version is 20140717T041004Z

Thanks,
Dave



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