[Users] VM migrations failing

[Dan Kenigsberg]

On Thu, Jan 31, 2013 at 11:08:58AM +0100, Martin Kletzander wrote:
> On 01/31/2013 10:25 AM, Dan Kenigsberg wrote:
> > On Thu, Jan 31, 2013 at 09:43:44AM +0100, Martin Kletzander wrote:
> >> On 01/30/2013 08:40 PM, Dead Horse wrote:
> >>> The nodes are EL6.3 based.
> >>>
> >>> Currently installed libvirt packages:
> >>>
> >>> libvirt-lock-sanlock-0.9.10-21.el6_3.8.x86_64
> >>> libvirt-cim-0.6.1-3.el6.x86_64
> >>> libvirt-0.9.10-21.el6_3.8.x86_64
> >>> libvirt-python-0.9.10-21.el6_3.8.x86_64
> >>> libvirt-client-0.9.10-21.el6_3.8.x86_64
> >>>
> >>> and qemu packages:
> >>> qemu-kvm-0.12.1.2-2.295.el6_3.10.x86_64
> >>> qemu-kvm-tools-0.12.1.2-2.295.el6_3.10.x86_64
> >>> qemu-img-0.12.1.2-2.295.el6_3.10.x86_64
> >>>
> >>> Thus my presumption here given the above is that virDomainMigrateToURI2 has
> >>> not yet been patched and/or back-ported into the EL6.x libvirt/qemu?
> >>>
> >>
> >> virDomainMigrateToURI2 is supported since 0.9.2, but is there a
> >> possibility the code is requesting direct migration?  That might explain
> >> the message, which is then incorrect; this was fixed in [1].
> >>
> >> Martin
> >>
> >> [1]
> >> http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=3189dfb1636da22d426d2fc07cc9f60304b16c5c
> > 
> > What is "direct migration" exactly, in the context of qemu-kvm?
> > 
> > We are using p2p migration
> > http://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=vdsm/libvirtvm.py;h=fe140ecbfac665248e2ad5c4bfaebaf54ab884cc;hb=18c24f7c7c27ac732c4a760caa9524e7319cd47e#l501
> > 
> 
> OK, so that's not the issue, sorry for the confusion.  I was thinking it
> would "somehow" get there.  Direct migration doesn't exist in QEMU at
> all, so it seemed weird, but I can't seem to find any other reason for
> this failure; will keep searching, though.

In this case, Dead Horse, would you try to migrate a VM (that you do not
care much about) using
    virsh -c qemu+tls://hostname/system migrate --p2p dsthost?

I'd like to see that the problem reproduces this way, too. More of
libvirtd.log may help. You may want to disable iptables for a moment,
just to eliminate a common cause of failure.