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[Yongli He <yongli.he@xxxxxxxxx>]

Public bug reported:

even with a good work neutron, this message still reported a Error.
this should be catch and translating to a message instead of leave the
ERROR there, this confuse.


example log:
http://52.27.155.124/sriov/242230/12/screen-logs/q-agt.log.gz


the ERROR message F.Y.I.


2015-11-20 14:02:06.202 DEBUG neutron.agent.linux.utils [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Running command (rootwrap daemon): ['ovs-ofctl', 'add-flows', 'br-eth3', '-'] execute_rootwrap_daemon /opt/stack/neutron/neutron/agent/linux/utils.py:99
2015-11-20 14:02:06.208 DEBUG neutron.agent.linux.utils [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Exit code: 0 execute /opt/stack/neutron/neutron/agent/linux/utils.py:144
2015-11-20 14:02:06.208 DEBUG neutron.agent.linux.utils [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Running command (rootwrap daemon): ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--columns=type', 'list', 'Interface', 'int-br-eth3'] execute_rootwrap_daemon /opt/stack/neutron/neutron/agent/linux/utils.py:99
2015-11-20 14:02:06.214 ERROR neutron.agent.ovsdb.impl_vsctl [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Unable to execute ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--columns=type', 'list', 'Interface', 'int-br-eth3'].
2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl Traceback (most recent call last):
2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl   File "/opt/stack/neutron/neutron/agent/ovsdb/impl_vsctl.py", line 63, in run_vsctl
2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl     log_fail_as_error=False).rstrip()
2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl   File "/opt/stack/neutron/neutron/agent/linux/utils.py", line 142, in execute
2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl     raise RuntimeError(msg)
2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl RuntimeError: Exit code: 1; Stdin: ; Stdout: ; Stderr: ovs-vsctl: no row "int-br-eth3" in table Interface

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1518429

Title:
  [q-agt] linux.utils list interface time out error should be catched

Status in neutron:
  New

Bug description:
  even with a good work neutron, this message still reported a Error.
  this should be catch and translating to a message instead of leave the
  ERROR there, this confuse.

  
  example log:
  http://52.27.155.124/sriov/242230/12/screen-logs/q-agt.log.gz

  
  the ERROR message F.Y.I.

  
  2015-11-20 14:02:06.202 DEBUG neutron.agent.linux.utils [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Running command (rootwrap daemon): ['ovs-ofctl', 'add-flows', 'br-eth3', '-'] execute_rootwrap_daemon /opt/stack/neutron/neutron/agent/linux/utils.py:99
  2015-11-20 14:02:06.208 DEBUG neutron.agent.linux.utils [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Exit code: 0 execute /opt/stack/neutron/neutron/agent/linux/utils.py:144
  2015-11-20 14:02:06.208 DEBUG neutron.agent.linux.utils [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Running command (rootwrap daemon): ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--columns=type', 'list', 'Interface', 'int-br-eth3'] execute_rootwrap_daemon /opt/stack/neutron/neutron/agent/linux/utils.py:99
  2015-11-20 14:02:06.214 ERROR neutron.agent.ovsdb.impl_vsctl [req-ce36e8a2-6fcc-4f8d-a10a-01e00ab2fc2c None None] Unable to execute ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--columns=type', 'list', 'Interface', 'int-br-eth3'].
  2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl Traceback (most recent call last):
  2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl   File "/opt/stack/neutron/neutron/agent/ovsdb/impl_vsctl.py", line 63, in run_vsctl
  2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl     log_fail_as_error=False).rstrip()
  2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl   File "/opt/stack/neutron/neutron/agent/linux/utils.py", line 142, in execute
  2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl     raise RuntimeError(msg)
  2015-11-20 14:02:06.214 117475 ERROR neutron.agent.ovsdb.impl_vsctl RuntimeError: Exit code: 1; Stdin: ; Stdout: ; Stderr: ovs-vsctl: no row "int-br-eth3" in table Interface

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