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[Joe Julian <joe@xxxxxxxxxxxxxxxx>]

Public bug reported:

2015-03-12 22:48:27.941 18501 TRACE nova.image.glance   File "/opt/io/io-nova/lib/python2.7/site-packages
/nova/image/glance.py", line 371, in download
2015-03-12 22:48:27.941 18501 TRACE nova.image.glance     data.write(chunk)
2015-03-12 22:48:27.941 18501 TRACE nova.image.glance IOError: [Errno 28] No space left on device

This is not enough data to properly diagnose the problem.

In this example, glance and nova were using ceph. The expectation was
that the storage devices that would be involved would all be ceph rbds.
Since there was plenty of space in ceph, this error was not useful.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1431631

Title:
  nova.image.glance.download failure error message is insufficient

Status in OpenStack Compute (Nova):
  New

Bug description:
  2015-03-12 22:48:27.941 18501 TRACE nova.image.glance   File "/opt/io/io-nova/lib/python2.7/site-packages
  /nova/image/glance.py", line 371, in download
  2015-03-12 22:48:27.941 18501 TRACE nova.image.glance     data.write(chunk)
  2015-03-12 22:48:27.941 18501 TRACE nova.image.glance IOError: [Errno 28] No space left on device

  This is not enough data to properly diagnose the problem.

  In this example, glance and nova were using ceph. The expectation was
  that the storage devices that would be involved would all be ceph
  rbds. Since there was plenty of space in ceph, this error was not
  useful.

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