[libvirt] qemu_driver migrateuri handling broken?

[Daniel P. Berrange]

On Wed, Sep 16, 2009 at 05:42:50PM +0200, Gregor Schaffrath wrote:
> Hi all.
> 
> Short summary on DV's request ;)
> 
> I ran into a problem migrating kvm machines with libvirt-0.6.5:
> 
> 1) At first, using the same syntax for the migrateuri as with xen (just the
> IP) did not work... looking into the source code (! ;) ), I found a
> different syntax for qemu.

The URI schemes should be listed in the driver capabilities XML.
The reason they are different is that they are two different ways
of doing migration.

We are working on a new tunnelled migration scheme that will be
uniform across drivers.

> 2) using tcp://<ip>:<port> just produced an 'unknown failure' on the
> receiving side:
> root at loadgen137:~> virsh -c qemu:///system migrate --live kvm-testnode-vnode3 qemu+tcp://10.192.11.136/system?no_verify=1 tcp://10.192.11.136:12345
> error: Unknown failure
> (Note: it was working like a charm when I eliminated the migrateuri
> altogether, 

Hmm, try tcp:10.192.11.136:12345  instead - for some unknown reason
it is not using correct URI formats.

> 3) removing the case distinction and the handling of the migrateuri in
> the qemudDomainMigratePrepare2 function in qemu_driver.c entirely
> (if-statement, and full else-part) solved both my issues.

I don't know what exactly you removed, by you'll almost certainly have
broken something else.

daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|