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[Bug 1668164] [NEW] centos7: nova not detecting version of qemu-kvm-ev

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Public bug reported:

Nova is failing to start on centos7 jobs [1]

---
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service [-] Error starting thread.
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service Traceback (most recent call last):
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/oslo_service/service.py", line 722, in run_service
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     service.start()
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/opt/stack/new/nova/nova/service.py", line 144, in start
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     self.manager.init_host()
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/opt/stack/new/nova/nova/compute/manager.py", line 1138, in init_host
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     self.driver.init_host(host=self.host)
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/opt/stack/new/nova/nova/virt/libvirt/driver.py", line 498, in init_host
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     self._version_to_string(MIN_QEMU_VERSION))
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service InternalError: Nova requires QEMU version 2.1.0 or greater.
2017-02-27 00:53:52.638 20698 ERROR oslo_service.service 
---

I have ensured we are using qemu-kvm-ev from the virt repos [2] (WIP
change at [3], but actually the qemu-kvm-ev package obsoletes the qemu-
kvm package so i think this is not the problem at all).

---
2017-02-27 00:43:14.858 | Installing:
2017-02-27 00:43:14.858 |  qemu-kvm-ev      x86_64     10:2.6.0-28.el7_3.3.1        rdo-qemu-ev     2.4 M
---

This seems to have started after [4]

We seem to be returning the right thing

---
[ianw@centos-7-rax-iad-7489471 ~]$ /usr/libexec/qemu-kvm --version
QEMU emulator version 2.6.0 (qemu-kvm-ev-2.6.0-28.el7_3.3.1), Copyright (c) 2003-2008 Fabrice Bellard

[ianw@centos-7-rax-iad-7489471 ~]$ sudo virsh -c qemu:///system version --daemon
Compiled against library: libvirt 2.0.0
Using library: libvirt 2.0.0
Using API: QEMU 2.0.0
Running hypervisor: QEMU 2.6.0
Running against daemon: 2.0.0

>>> import libvirt
>>> c=libvirt.openReadOnly(None)
>>> c.getVersion()
2006000
---


[1] http://logs.openstack.org/02/438302/3/check/gate-tempest-dsvm-platform-centos7-nv/9549abc/logs/screen-n-cpu.txt.gz
[2] http://logs.openstack.org/02/438302/3/check/gate-tempest-dsvm-platform-centos7-nv/9549abc/logs/devstacklog.txt.gz#_2017-02-27_00_43_14_858
[3] https://review.openstack.org/#/c/438325/
[4] https://review.openstack.org/#/c/432700/

** Affects: nova
     Importance: Undecided
         Status: New

-- 
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https://bugs.launchpad.net/bugs/1668164

Title:
  centos7: nova not detecting version of qemu-kvm-ev

Status in OpenStack Compute (nova):
  New

Bug description:
  Nova is failing to start on centos7 jobs [1]

  ---
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service [-] Error starting thread.
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service Traceback (most recent call last):
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/oslo_service/service.py", line 722, in run_service
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     service.start()
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/opt/stack/new/nova/nova/service.py", line 144, in start
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     self.manager.init_host()
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/opt/stack/new/nova/nova/compute/manager.py", line 1138, in init_host
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     self.driver.init_host(host=self.host)
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service   File "/opt/stack/new/nova/nova/virt/libvirt/driver.py", line 498, in init_host
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service     self._version_to_string(MIN_QEMU_VERSION))
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service InternalError: Nova requires QEMU version 2.1.0 or greater.
  2017-02-27 00:53:52.638 20698 ERROR oslo_service.service 
  ---

  I have ensured we are using qemu-kvm-ev from the virt repos [2] (WIP
  change at [3], but actually the qemu-kvm-ev package obsoletes the
  qemu-kvm package so i think this is not the problem at all).

  ---
  2017-02-27 00:43:14.858 | Installing:
  2017-02-27 00:43:14.858 |  qemu-kvm-ev      x86_64     10:2.6.0-28.el7_3.3.1        rdo-qemu-ev     2.4 M
  ---

  This seems to have started after [4]

  We seem to be returning the right thing

  ---
  [ianw@centos-7-rax-iad-7489471 ~]$ /usr/libexec/qemu-kvm --version
  QEMU emulator version 2.6.0 (qemu-kvm-ev-2.6.0-28.el7_3.3.1), Copyright (c) 2003-2008 Fabrice Bellard

  [ianw@centos-7-rax-iad-7489471 ~]$ sudo virsh -c qemu:///system version --daemon
  Compiled against library: libvirt 2.0.0
  Using library: libvirt 2.0.0
  Using API: QEMU 2.0.0
  Running hypervisor: QEMU 2.6.0
  Running against daemon: 2.0.0

  >>> import libvirt
  >>> c=libvirt.openReadOnly(None)
  >>> c.getVersion()
  2006000
  ---

  
  [1] http://logs.openstack.org/02/438302/3/check/gate-tempest-dsvm-platform-centos7-nv/9549abc/logs/screen-n-cpu.txt.gz
  [2] http://logs.openstack.org/02/438302/3/check/gate-tempest-dsvm-platform-centos7-nv/9549abc/logs/devstacklog.txt.gz#_2017-02-27_00_43_14_858
  [3] https://review.openstack.org/#/c/438325/
  [4] https://review.openstack.org/#/c/432700/

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