yahoo-eng-team team mailing list archive

[Sean Dague <sean@xxxxxxxxx>]

Nova is being asked to do a thing, which it can't, which is put files in
the guest. This retry is actually kind of important.

The bug really is exposing the fact that *no* working file injection
mechanism exists in these rally jobs, but they are asking guests to  do
something.

** Changed in: nova
       Status: In Progress => Invalid

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1438260

Title:
  Expensive Device allocation loop when NBD is absent

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  See log stash query:
  "Device allocation failed. Will retry in 2 seconds."

  Example:
  http://logs.openstack.org/10/163910/6/check/gate-rally-dsvm-cinder/46d89ab/logs/screen-n-cpu.txt.gz#_2015-03-30_14_55_56_941

  Logs:
  2015-03-30 14:55:56.940 ERROR nova.virt.disk.mount.nbd [req-df13155c-0340-4e10-aec4-2fabea382eef None None] nbd module not loaded
  2015-03-30 14:55:56.940 DEBUG oslo_concurrency.lockutils [req-df13155c-0340-4e10-aec4-2fabea382eef None None] Lock "nbd-allocation-lock" released by "_inner_get_dev" :: held 0.000s inner /usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:456
  2015-03-30 14:55:56.941 INFO nova.virt.disk.mount.api [req-df13155c-0340-4e10-aec4-2fabea382eef None None] Device allocation failed. Will retry in 2 seconds.
  2015-03-30 14:55:58.941 DEBUG oslo_concurrency.lockutils [req-df13155c-0340-4e10-aec4-2fabea382eef None None] Lock "nbd-allocation-lock" acquired by "_inner_get_dev" :: waited 0.000s inner /usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:444
  2015-03-30 14:55:58.941 ERROR nova.virt.disk.mount.nbd [req-df13155c-0340-4e10-aec4-2fabea382eef None None] nbd module not loaded

  We should not even enter the loop when /sys/block/nbd0 is clearly
  absent.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1438260/+subscriptions