[Bug 1779685] Re: [18.04.1] Backport support for Intel VROC arrays in mdadm

[Steve Langasek]

Hello Dimitri, or anyone else affected,

Accepted mdadm into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/mdadm/4.1~rc1-3~ubuntu18.04.1 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 on 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-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

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

** Changed in: mdadm (Ubuntu Bionic)
       Status: Incomplete => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1779685

Title:
  [18.04.1] Backport support for Intel VROC arrays in mdadm

Status in mdadm package in Ubuntu:
  Fix Released
Status in mdadm source package in Bionic:
  Fix Committed
Status in mdadm source package in Cosmic:
  Fix Released

Bug description:
  [Impact]

   * mdadm as shipped in 18.04.0 does not support Intel VROC arrays, as
  to be shipped over Bionic LTS lifecycle in multiple
  laptop/desktop/server SKUs by multiple OEMs.

   * this is a request to backport mdadm master, with support of Intel
  VROC arrays, and subsequent compiler fixes, and reshaping fixes, to
  fully support VROC arrays (including reshaping).

  [Test Cases]

   * Ensure existing Intel IMSM raids continue to assemble, boot, shutdown cleanly, bootable when degraded.
   * Ensure existing linux raids continue to assemble, boot, shutdown cleanly, bootable when degraded.
     - with 0.90 metadata; 1.0 metadata; 1.1 metadata; 1.2 metadata
   * [Optional] ensure that DDF raids continue to assemble, boot, shutdown cleanly, bootable when degraded.
   * Validate installers onto Intel IMSM raids
   * Validate installers onto Linux RAID
   * Validate bare-metal public clouds that use mdadm

  [Regression Potential]

   * Worst case scenario is failing to start assembled array in rw mode,
  on boot. This would result in dropping into emergency shell/mode in
  either initramfs, or emergency.target requiring manual intervention by
  a sysadmin to recover and start synced raid array. However, the test
  cases above should cover this regression potential adequately.

   * Other changes, to resizing/reshaping may result in failure to
  resize/reshape, but these are rare maintenance operations for which
  one should have a backup - or able to recover from such an operation.

  [Other Info]

   * xnox offline 7th July - 16th July

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