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[Launchpad Bug Tracker <1457510@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.0.0-4.6

---------------
linux (4.0.0-4.6) wily; urgency=low

  [ Andy Whitcroft ]

  * Release Tracking Bug
    - LP: #1470233
  * rebase to mainline v4.0.7

  [ Jay Vosburgh ]

  * SAUCE: fan: Proof of concept implementation (v2)
    - LP: #1439706
  * SAUCE: fan: tunnel multiple mapping mode (v3)
    - LP: #1470091

  [ Upstream Kernel Changes ]

  * rebase to v4.0.7
    - LP: #1427680
    - LP: #1462614

 -- Andy Whitcroft <apw@xxxxxxxxxxxxx>  Tue, 30 Jun 2015 16:55:32 +0100

** Changed in: linux (Ubuntu Wily)
       Status: Invalid => Fix Released

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https://bugs.launchpad.net/bugs/1457510

Title:
  md raid0 w/ fstrim causing data loss

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Utopic:
  Invalid
Status in linux source package in Vivid:
  Invalid
Status in linux source package in Wily:
  Fix Released

Bug description:
  Commit 47d68979cc96 ("md/raid0: fix bug with chunksize not a power of
  2.") introduced in v4.1 development has been picked by stable trees,
  and is causing issues (see
  https://bugzilla.kernel.org/show_bug.cgi?id=98501).

  This commit has been dropped from Vivid and Utopic when pulling the
  changes from stable trees 3.19.7 and 3.16.7-ckt11 respectively (bug
  #1454699 and bug #1454202).

  The fix for this issue is not upstream yet, and should be picked by
  stable trees.  Here's the link for the proposed fix:
  http://git.neil.brown.name/?p=md.git;a=commitdiff;h=a81157768a00e8cf8a7b43b5ea5cac931262374f

  break-fix: 47d68979cc968535cb87f3e5f2e6a3533ea48fbd
  a81157768a00e8cf8a7b43b5ea5cac931262374f

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