On Mon, 24 Sep 2018 14:57:24 -0000
"Davide Butti" <dbutti...@gmail.com> wrote:
> Hello; despite many tests and tentative adjustments, I'm currently unable to
> live migrate VMs on oVirt 4.2.6.
>
> The vdsm.log contains a "failed to migrate" error, that points to an attempt
> to access a non-existent network port "TestOne". This is in fact the name of
> the (externally defined) network, and isn't anywhere to be seen as OVS port.
>
> 2018-09-24 14:32:57,059+0000 ERROR (migsrc/4c0255b5) [virt.vm]
> (vmId='4c0255b5-0f52-4da7-ac97-d54d815cd6ab') Cannot get interface MTU on
> 'TestOne': No such device (migration:290)
> 2018-09-24 14:32:57,793+0000 ERROR (migsrc/4c0255b5) [virt.vm]
> (vmId='4c0255b5-0f52-4da7-ac97-d54d815cd6ab') Failed to migrate
> (migration:455)
> Traceback (most recent call last):
> File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 437,
> in _regular_run
> self._startUnderlyingMigration(time.time())
> File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 509,
> in _startUnderlyingMigration
> self._perform_with_conv_schedule(duri, muri)
> File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 587,
> in _perform_with_conv_schedule
> self._perform_migration(duri, muri)
> File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 529,
> in _perform_migration
> self._migration_flags)
> File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 98, in
> f
> ret = attr(*args, **kwargs)
> File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py",
> line 130, in wrapper
> ret = f(*args, **kwargs)
> File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 92,
> in wrapper
> return func(inst, *args, **kwargs)
> File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1746, in
> migrateToURI3
> if ret == -1: raise libvirtError ('virDomainMigrateToURI3() failed',
> dom=self)
> libvirtError: Cannot get interface MTU on 'TestOne': No such device
>
> The setup was previously working under OVS, and I have
> "migration_ovs_hook_enabled = true" under /etc/vdsm/vdsm.conf
>
Can you please remove the "migration_ovs_hook_enabled = true" from
vdsm.conf?
If removing this option from vdsm.conf works for you, would you please
create a bug for this? - Thanks!
In 4.2.6 only OVN networks for VMs in clusters with switch type OVS are
allowed. OVN networks does not require migration_ovs_hook_enabled and
migration seems to be broken if set.
> Do I need to change anything? Is this supposed to work in the first place?
>
> Many thanks for your help, have a nice day
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