[Bug 1543430] Re: kpartx 0.5.0-7ubuntu11 fails to remove loop mapping on kpartx -d

[Brian Murray]

Hello Steve, or anyone else affected,

Accepted multipath-tools into trusty-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/multipath-
tools/0.4.9-3ubuntu7.9 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1543430

Title:
  kpartx 0.5.0-7ubuntu11 fails to remove loop mapping on kpartx -d

Status in multipath-tools package in Ubuntu:
  Fix Released

Bug description:
  I've observed in livefs build logs that with kpartx 0.5.0-7ubuntu12,
  'kpartx -d' is not removing the loop mapping (losetup -d).  E.g.,
  build log diff:

   + kpartx -v -d binary/boot/disk.ext4
   del devmap : loop0p1
  -loop deleted : /dev/loop0

  This doesn't seem to be causing any immediate practical problems
  because each livefs build gets a dedicated VM which is torn down
  afterwards, so the mappings do not persist.  But it's definitely
  incorrect for these mappings to persist.

  The good build log used kpartx 0.5.0-7ubuntu9.  Testing the
  intermediate versions, 0.5.0-7ubuntu11 shows the same buggy behavior
  as 12.  10 clears the loop mapping, but also appears to fail to
  correctly set up partitions in my test case so I'm not sure if this
  bug is present or not in 0.5.0-7ubuntu10.

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