[libvirt] Bug in DOMINFO command when balloon driver is used on a vm with more then 8 GB of MaxMemory ?

[Eric Blake]

On 03/22/2013 04:11 PM, fc lists wrote:
> Hi ,
> 
> I have been banging my head on this for the last 8 hours ... and i really
> need to know if is really a bug or i am doing something wrong.

Cleaning out my inbox, and I don't think I ever saw a reply to this one.

> Description of the problem:
> 
> When the virsh setmem command is used to inflate the balloon on a VM to
> which 8GB of MaxMemory or more are allocated then the information reported
> with virsh dominfo , virsh dumpxml after the balloon change has been
> performed are wrong.

It turned out to be a bug in qemu and not libvirt; it has since been
fixed for the upcoming qemu 1.5, and will probably be backported to
other stable builds (pester your distro to include the fix, if they
haven't already).

> I am going to raise a ticket on RED HAT bugzilla for this but was hoping to
> get some feedback here first to avoid raising a ticket for something that
> maybe i just misunderstood.
> 
> Platform is Centos 6.4 (problem was present in 6.3 as well starting
> with libvirt-0.9.10-21.el6.3.7 )

Then it looks like this bug is relevant to your setup:
https://bugzilla.redhat.com/show_bug.cgi?id=927336

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 621 bytes
Desc: OpenPGP digital signature
URL: <http://listman.redhat.com/archives/libvir-list/attachments/20130507/083b7289/attachment-0001.sig>