[fedora-virt] virt-v2v hang

[Matthew Booth]

On 11/11/12 21:04, Richard W.M. Jones wrote:
> On Fri, Nov 09, 2012 at 05:53:57PM -0600, Ian Pilcher wrote:
>> I am trying to use virt-v2v to convert a Fedora 17 KVM guest to a RHEV
>> guest.  After creating a libvirt storage pool from my existing VG
>> (uuhg!), I run the following command:
>>
>> sudo virt-v2v -o rhev -os 192.168.2.254:/srv/nfs --vmtype server -n
>> rhevm rhev-ipa
>>
>> Everything appeared to be working until the process (apparently) hung
>> at 74%.  ps shows that it is in a D+ state:
>>
>> 2991 pts/1    D+     0:10 /usr/bin/perl /bin/virt-v2v -o rhev -os
>> 192.168.2.254:/srv/nfs --vmtype server -n rhevm rhev-ipa
>>
>> Any ideas?  Thanks!
>
> Odd, no I don't think I've seen anything like this.
>
> The D state would indicate that it's probably lost an interrupt
> from the disk.  Anything in 'dmesg'?

You need to be looking in the kernel for the source of the D state. 
However, if you asked me to make a bet I'd say it's hanging trying to 
write to nfs. I'd investigate your network and your NFS server.

Incidentally, even if you get past this the conversion isn't going to 
work because v2v doesn't support F17 guests (yet). Upstream support for 
this hopefully coming fairly soon.

Matt
-- 
Matthew Booth, RHCA, RHCSS
Red Hat Engineering, Virtualisation Team

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