Jenkins check-merged failure on Vdsm 4.1

[Milan Zamazal]

Hi,

after my Vdsm patch https://gerrit.ovirt.org/75329 in ovirt-4.1 branch
had been merged, Jenkins check-merged job
http://jenkins.ovirt.org/job/vdsm_4.1_check-merged-el7-x86_64/173/
failed with the following error:

  07:01:21 @ Start specified VMs: 
  07:01:21   # Start nets: 
  07:01:21     * Create network vdsm_functional_tests_lago: 
  07:01:27     * Create network vdsm_functional_tests_lago: Success (in 0:00:05)
  07:01:27   # Start nets: Success (in 0:00:05)
  07:01:27   # Start vms: 
  07:01:27     * Starting VM vdsm_functional_tests_host-el7: 
  07:02:07 libvirt: QEMU Driver error : monitor socket did not show up: No such file or directory
  07:02:07     * Starting VM vdsm_functional_tests_host-el7: ERROR (in 0:00:40)
  07:02:07   # Start vms: ERROR (in 0:00:40)
  07:02:07   # Destroy network vdsm_functional_tests_lago: 
  07:02:07   # Destroy network vdsm_functional_tests_lago: ERROR (in 0:00:00)
  07:02:07 @ Start specified VMs: ERROR (in 0:00:46)
  07:02:07 Error occured, aborting
  07:02:07 Traceback (most recent call last):
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/cmd.py", line 936, in main
  07:02:07     cli_plugins[args.verb].do_run(args)
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/plugins/cli.py", line 184, in do_run
  07:02:07     self._do_run(**vars(args))
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/utils.py", line 495, in wrapper
  07:02:07     return func(*args, **kwargs)
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/utils.py", line 506, in wrapper
  07:02:07     return func(*args, prefix=prefix, **kwargs)
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/cmd.py", line 264, in do_start
  07:02:07     prefix.start(vm_names=vm_names)
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/prefix.py", line 1033, in start
  07:02:07     self.virt_env.start(vm_names=vm_names)
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/virt.py", line 331, in start
  07:02:07     vm.start()
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line 299, in start
  07:02:07     return self.provider.start(*args, **kwargs)
  07:02:07   File "/usr/lib/python2.7/site-packages/lago/vm.py", line 106, in start
  07:02:07     dom = self.libvirt_con.createXML(self._libvirt_xml())
  07:02:07   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3782, in createXML
  07:02:07     if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self)
  07:02:07 libvirtError: monitor socket did not show up: No such file or directory
  07:02:07 Took 210 seconds

The error is apparently unrelated to my patch since: 1. my patch should
have nothing to do with VM start; 2. Jenkins has run successfully on the
following patch (https://gerrit.ovirt.org/75321).  FWIW, the preceding
patch (https://gerrit.ovirt.org/75038) has run successfully too.

Do you know what's wrong?

Thanks,
Milan