[Openstack-operators] Nova live-migration failing for RHEL7/CentOS7 VMs

Corbin Hendrickson corbin.hendrickson at endurance.com
Wed Sep 28 15:34:50 UTC 2016


It unfortunately is affecting virtually all of Redhat's latest qemu-kvm
packages. The bug that was unintentionally introduced was done so in
response to CVE-2016-5403  Qemu: virtio: unbounded memory allocation on
host via guest leading to DoS.

Late in the bug thread, they finally posted to a new bug created for the
breaking of live migrate via *Bug 1371943*
<https://bugzilla.redhat.com/show_bug.cgi?id=1371943> - RHSA-2016-1756
breaks migration of instances.

Based off their posts i've been following it's likely going to "hit the
shelves" when RHEL 7.3 / CentOS 7.3 comes out. It does look like they are
backporting it to all their versions of RHEL so that's good.

But yes this does affect 2.3 as well.

Corbin Hendrickson
Endurance Cloud Development Lead - Manager
Cell: 801-400-0464

On Wed, Sep 28, 2016 at 9:13 AM, Van Leeuwen, Robert <rovanleeuwen at ebay.com>
wrote:

> > There is a bug in the following:
>
> >
>
> > qemu-kvm-1.5.3-105.el7_2.7
>
> > qemu-img-1.5.3-105.el7_2.7
>
> > qemu-kvm-common-1.5.3-105.el7_2.7
>
>
>
> You might be better of using the RHEV qemu packages
>
> They are more recent (2.3) and have more features compiled into them.
>
>
>
> Cheers,
>
> Robert van Leeuwen
>
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>
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