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[Ami Jeain <ajeain@xxxxxxxxxx>]

Public bug reported:

I am trying to perform a live-migration of one instance from one server to another, and while it fails, I see in the conductor log file:
File "/usr/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 140, in select_destinations raise exception.NoValidHost(reason='')

1. if I do: nova host-list and nova host-describe on the destination host I see:
<hostname> | compute     | nova

and
<hostname> | (total)    | 12  | 31957     | 442
<hostname> | (used_now) | 0   | 512       | 0
which means nova knows there is a valid host available.

2. why is the reason empty?

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1316077

Title:
  live migration fails on NoValidHost although the host seems very valid

Status in OpenStack Compute (Nova):
  New

Bug description:
  I am trying to perform a live-migration of one instance from one server to another, and while it fails, I see in the conductor log file:
  File "/usr/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 140, in select_destinations raise exception.NoValidHost(reason='')

  1. if I do: nova host-list and nova host-describe on the destination host I see:
  <hostname> | compute     | nova

  and
  <hostname> | (total)    | 12  | 31957     | 442
  <hostname> | (used_now) | 0   | 512       | 0
  which means nova knows there is a valid host available.

  2. why is the reason empty?

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