[CentOS] True bond howto for Centos 6

Tue May 15 14:41:21 UTC 2012
Florian La Roche <Florian.LaRoche at gmx.net>

On Sun, May 13, 2012 at 12:42:52PM -0700, Jerry Franz wrote:
> On 05/13/2012 10:16 AM, bob wrote:
> >
> > from what i get it is a problem with libvirt, using a bridge that is
> > going through a bond....on the same machine.
> > It must be rather detailed to fix and only a few people seem to use that
> > route. (like you and me)
> >
> 
> I've been running 14 CentOS5 VMs with bridged over active-backup bonded 
> interfaces (actually, over three sets of bonded interfaces) on a single 
> Ubuntu 10.04-LTS server KVM host for a couple of years now. The only 
> real issue I have had is that during a host reboot the 'thundering herd' 
> trying to autostart simultaneously sometimes doesn't reliably start all 
> 14 VMs and I have to manually launch the one or two VMs that fail to 
> launch.

I used to see the same for RHEL5-based kvm-servers, but haven't seen this
with any RHEL6-based servers that I would recommend for kvm installs now.

> Also, I had to roll my own shutdown script because for whatever reason 
> Ubuntu 10.04 thinks shooting running VMs in the head during a shutdown 
> is a better approach than waiting for them to properly shutdown on request.

I also tend to favour shutdown/reboots for kvm guests instead of
suspend/resume...

best regards,

Florian La Roche