Public bug reported:
Since arping is spawned in a thread, if a router is added and quickly
removed from a network, the arping calls could generate errors on the
second or third loop, for example:
Exit code: 2; Stdin: ; Stdout: ; Stderr: arping: Device qr-1e77796c-2b
not available.
This can happen in this scenario:
T(0): internal_network_added()
port plugged
arping started in thread
T(1): internal_network_removed()
port unplugged
T(2): arping fails
T(3): arping fails
An example is in:
http://logs.openstack.org/02/469602/6/check/gate-tempest-dsvm-neutron-
linuxbridge-ubuntu-
xenial/7a048d9/logs/screen-q-l3.txt.gz#_Jun_09_00_23_55_483118
Just search for qr-1e77796c-2b in the logs before this time.
The arping code should detect this on a failure, log a warning and
return early as there is no way to stop the thread once it is spawned.
** Affects: neutron
Importance: Low
Assignee: Brian Haley (brian-haley)
Status: In Progress
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1696893
Title:
Arping code should detect missing interface and return early
Status in neutron:
In Progress
Bug description:
Since arping is spawned in a thread, if a router is added and quickly
removed from a network, the arping calls could generate errors on the
second or third loop, for example:
Exit code: 2; Stdin: ; Stdout: ; Stderr: arping: Device qr-1e77796c-2b
not available.
This can happen in this scenario:
T(0): internal_network_added()
port plugged
arping started in thread
T(1): internal_network_removed()
port unplugged
T(2): arping fails
T(3): arping fails
An example is in:
http://logs.openstack.org/02/469602/6/check/gate-tempest-dsvm-neutron-
linuxbridge-ubuntu-
xenial/7a048d9/logs/screen-q-l3.txt.gz#_Jun_09_00_23_55_483118
Just search for qr-1e77796c-2b in the logs before this time.
The arping code should detect this on a failure, log a warning and
return early as there is no way to stop the thread once it is spawned.
To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1696893/+subscriptions
--
Mailing list: https://launchpad.net/~yahoo-eng-team
Post to : [email protected]
Unsubscribe : https://launchpad.net/~yahoo-eng-team
More help : https://help.launchpad.net/ListHelp
