Open Stack

----- Original Message -----
> From: "Mike Smith" <mismith at overstock.com>
> To: "Mike Lowe" <jomlowe at iu.edu>
> Cc: "OpenStack Operators" <openstack-operators at lists.openstack.org>
> Sent: Wednesday, December 21, 2016 3:32:46 PM
> Subject: Re: [Openstack-operators] CentOS 7.3 libvirt appears to be broken for virtio-scsi and ceph with cephx auth
> 
> We had a similar surprise updating our lab to CentOS 7.3.  Even Openstack
> aside, libvirt itself on 7.3 couldn’t recognize any of our defined VMs -
> kept giving a message of “ No path to ‘ ‘ “ just trying to do a ‘virsh
> list’.   

Was discussing this one with Neil on openstack-dev here:

    http://lists.openstack.org/pipermail/openstack-dev/2016-December/109080.html

Which would seem to have been filed as:

    https://bugs.launchpad.net/nova/+bug/1649527

Thanks,

Steve

> We ended up adding an additional yum repo definition pointing to
> the older 7.2 repo and doing a yum history rollback and we’ve stopped
> pointing to the 7.3 repo altogether.  We had other problems with Cent 7.3 as
> well, unrelated to virtualization.
> 
> Are others out there successfully using CentOS 7.3 right now with libvirt or
> is everyone experiencing this similar pain.
> 
> That’s frightening that the virtio-scsi support is broken as well.
> 
> Mike Smith
> Lead Cloud Systems Architect
> Overstock.com<http://overstock.com>
> 
> 
> 
> On Dec 20, 2016, at 9:57 AM, Mike Lowe
> <jomlowe at iu.edu<mailto:jomlowe at iu.edu>> wrote:
> 
> I got a rather nasty surprise upgrading from CentOS 7.2 to 7.3.  As far as I
> can tell the libvirt 2.0.0 that ships with 7.3 doesn’t behave the same way
> as the 1.2.17 that ships with 7.2 when using ceph with cephx auth during
> volume attachment using virtio-scsi.  It looks like it fails to add the
> cephx secret.  The telltale signs are "No secret with id
> 'scsi0-0-0-1-secret0’” in the /var/log/libvirt/qemu instance logs.  I’ve
> filed a bug here https://bugzilla.redhat.com/show_bug.cgi?id=1406442 and
> there is a libvirt mailing list  thread about a fix for libvirt 2.5.0 for
> what looks like this same problem
> https://www.redhat.com/archives/libvir-list/2016-October/msg00396.html  I’m
> out of ideas for workarounds having had kind of a disastrous attempt at
> downgrading to libvirt 1.2.17, so if anybody has any suggestions I’m all
> ears.
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-- 
Steve Gordon,
Principal Product Manager,
Red Hat OpenStack Platform