nova-compute dies without proper error message

[Mate Lakat]

Using xenapi driver (xenapi.XenAPIDriver) on top of an ubuntu 12.04 + xcp-xapi, starting devstack nova-compute dies without any information:

stack@DevStackOSDomU:~/devstack$ cd /opt/stack/nova && sg libvirtd /opt/stack/nova/bin/nova-compute
2012-07-31 13:03:32 INFO nova.compute.manager [-] Loading compute driver 'xenapi.XenAPIDriver'

Some better error handling is required around:

~/nova$ cat -n nova/compute/manager.py | grep -A 20 Loading
   284 LOG.info(_("Loading compute driver '%s'") % compute_driver)
   285 try:
   286 self.driver = utils.check_isinstance(
   287 importutils.import_object_ns('nova.virt', compute_driver),
   288 driver.ComputeDriver)
   289 except ImportError as e:
   290 LOG.error(_("Unable to load the virtualization driver: %s") % (e))
   291 sys.exit(1)
   292

The actual problem, is that an Exception is raised in the driver code, see #1025216

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10603

[Mark McLoughlin (markmc)]

https://review.openstack.org/#/c/10611/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/10611
Committed: http://github.com/openstack/openstack-common/commit/58404a1a9461900367dbb7a8b3f2f98441e12959
Submitter: Jenkins
Branch: master

commit 58404a1a9461900367dbb7a8b3f2f98441e12959
Author: Mate Lakat <email address hidden>
Date: Tue Jul 31 17:53:57 2012 +0100

    Install a qualified except hook.

    Fixes bug 1031351.

    As an Exception is raised, it was not visible in the log, because
    it wasn't qualified. The fix sets up the exception hook to be
    qualified as the product_name.

    Change-Id: Ie8061d003b05ea8b00db5d8ed8fa445ccc822942

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10878

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/10878
Committed: http://github.com/openstack/openstack-common/commit/babd6ca3324b3a684dc1e0beedadfc89981039c7
Submitter: Jenkins
Branch: master

commit babd6ca3324b3a684dc1e0beedadfc89981039c7
Author: Mate Lakat <email address hidden>
Date: Mon Aug 6 11:32:22 2012 +0100

    Fix meaningless test case

    Related to fixing bug 1031351

    The testcase was meaningless.

    Change-Id: I7b88b86a600fac0c30bcac354262ac00593b495c

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10895

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10898

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/10898
Committed: http://github.com/openstack/nova/commit/a7987aaa86c9cd8c6509118028a61ce7445ec125
Submitter: Jenkins
Branch: master

commit a7987aaa86c9cd8c6509118028a61ce7445ec125
Author: Andrew Bogott <email address hidden>
Date: Fri Aug 3 01:57:40 2012 -0500

    Migrate a logging change from common:

    commit 58404a1a9461900367dbb7a8b3f2f98441e12959
    Author: Mate Lakat <email address hidden>
    Date: Tue Jul 31 17:53:57 2012 +0100

        Install a qualified except hook.

        Fixes bug 1031351.

        As an Exception is raised, it was not visible in the log, because
        it wasn't qualified. The fix sets up the exception hook to be
        qualified as the product_name.

    Change-Id: I38c48d0dd2ac885fcb226310b6039be667af9e0d