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[Bug 1253991] Re: image cache clean-up should also remove unused ephemeral backing files

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>
Date: Thu, 03 Sep 2015 11:44:12 -0000
Reply-to: Bug 1253991 <1253991@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => liberty-3

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https://bugs.launchpad.net/bugs/1253991

Title:
  image cache clean-up should also remove unused ephemeral backing files

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  Currently ephermeral backing files are never removed from the system.
  However changes to flavor defintions and supported os_types may make
  them obsolete.

  The image clean-up code should recognise at least obsolete unused
  files (i.e size doesn't match any flavor, os_type doesn't match a
  defined mkfs command, not used by any instance) and remove them.

  It woudl be nice if it also had an option to remove files that are not
  obsolete but are unused after some period.

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