While (re)building the provider image, imagefactory fails with error "OzException: No disk activity in 300 seconds, failing. "

Issue

• While building the provider image, imagefactory fails with following trace-back:

        File "/usr/lib/python2.6/site-packages/imgfac/builders/Fedora_rhevm_Builder.py", line 65, in build_image
        self.build_upload(build_id)
        File "/usr/lib/python2.6/site-packages/imgfac/builders/Fedora_rhevm_Builder.py", line 112, in build_upload
        libvirt_xml = guest.install(self.app_config["timeout"])
        File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 1456, in install
        return self._do_install(timeout, force, 0)
        File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 1438, in _do_install
        self._wait_for_install_finish(dom, timeout)
        File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 546, in _wait_for_install_finish
        raise oz.OzException.OzException(exc_str)
        OzException:  No disk activity in 300 seconds, failing.  Check screenshot at  /factory-build-2ad614b4-b40e-45c0-98ba-62827c6000bc-1331072751.71.png  for more detail
        2012-03-06 14:25:52,350 DEBUG  imgfac.BuildJob.BuildJob thread(2ad614b4) Message: Builder  (2ad614b4-b40e-45c0-98ba-62827c6000bc) changed status from BUILDING to  FAILED
        2012-03-06 14:25:52,350 DEBUG imgfac.BuildJob.BuildJob  thread(2ad614b4) Message: 2ad614b4-b40e-45c0-98ba-62827c6000bc for rhevm  about to exit local queue