[Bug 1322976] Re: [precise] dosfsck is unable to repair FS

[Launchpad Bug Tracker]

This bug was fixed in the package dosfstools - 3.0.12-1ubuntu1.2

---------------
dosfstools (3.0.12-1ubuntu1.2) precise; urgency=medium

  * Add git-check-dirty-bit.patch: Check boot sector for dirty bit, to allow
    dosfsck to repair partitions which didn't get unmounted properly.
    (LP: #1322976)
 -- Martin Pitt <martin.pitt at ubuntu.com>   Tue, 07 Apr 2015 12:19:39 +0200

** Changed in: dosfstools (Ubuntu Precise)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1322976

Title:
  [precise] dosfsck is unable to repair FS

Status in dosfstools package in Ubuntu:
  Fix Released
Status in dosfstools source package in Precise:
  Fix Released

Bug description:
  [Impact]

  dosfsck is unable to repair FS and kernel show this warning:

  FAT-fs (sdc1): Volume was not properly unmounted. Some data may be
  corrupt. Please run fsck.

  This problem happends when 3.8+ kernel does not properly umount fat
  partion. For fixing this problem dosfstools v3.0.14+ is needed. See:
  https://lkml.org/lkml/2013/5/6/342

  Because in precise is only version 3.0.12-1ubuntu1.1, it cannot repair
  these FS. So please update in precise dosfsck to at least version
  v3.0.14 which can properly fix fat32 partitions.

  Upstream patch: http://daniel-
  baumann.ch/gitweb/?p=software/dosfstools.git;a=commitdiff;h=ce2f8dc349a8a6b2c26d1b3892cc9b5f0408bd34

  [Test Case]

  Mount some FAT partition in R/W mode and stop/crash kernel. Next time
  run fsck on that partition and dosfsck should properly clean dirty
  bit. Kernel should not show message "Volume was not properly
  unmounted".

  [Regression Potential]

  Low/None. Mentioned patch which fix this problem is already included
  in upstream dosfstools version.

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