yahoo-eng-team team mailing list archive

[Chris Buccella <chris@xxxxxxxxxxxx>]

Public bug reported:

If a compute node's image cache is full, booting an instance of an
instance not in the cache will fail, with a "no valid host" error, since
the image of the new instance can't be copied into the cache. This
occurs even if there are no instances running on the compute node. The
only recourse for the user is to either wait for the periodic cleanup of
the cache or have an admin manually clean up the cache.

The fix would be to remove unused images from the cache older than
remove_unused_original_minimum_age_seconds immediately if a new image
needs to be copied to the cache.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1439012

Title:
  Instance boot fails if image cache is full

Status in OpenStack Compute (Nova):
  New

Bug description:
  If a compute node's image cache is full, booting an instance of an
  instance not in the cache will fail, with a "no valid host" error,
  since the image of the new instance can't be copied into the cache.
  This occurs even if there are no instances running on the compute
  node. The only recourse for the user is to either wait for the
  periodic cleanup of the cache or have an admin manually clean up the
  cache.

  The fix would be to remove unused images from the cache older than
  remove_unused_original_minimum_age_seconds immediately if a new image
  needs to be copied to the cache.

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