[precise] dosfsck is unable to repair FS

Bug #1322976 reported by Pali on 2014-05-25
This bug affects 2 people
Affects Status Importance Assigned to Milestone
dosfstools (Ubuntu)

Bug Description


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.

Martin Pitt (pitti) wrote :

Fixed in 14.04 and later, only affects 12.04 (precise).

Changed in dosfstools (Ubuntu):
status: New → Fix Released
Changed in dosfstools (Ubuntu Precise):
status: New → Triaged
importance: Undecided → Medium
Pali (pali) wrote :

Ping. Any news about fixing this bug? Patch is already available.

Pali (pali) wrote :

Its still not fixed so fsck for FAT32 partitions is broken for last ubuntu precise release!

description: updated
Martin Pitt (pitti) wrote :

I uploaded a precise backport of that patch to the SRU review queue. Can you please prepare the bug for an SRU accordingly, in particular add a Test Case? See https://wiki.ubuntu.com/StableReleaseUpdates.


Changed in dosfstools (Ubuntu Precise):
status: Triaged → In Progress
Pali (pali) wrote :

I updated description.

description: updated

Hello Pali, or anyone else affected,

Accepted dosfstools into precise-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/dosfstools/3.0.12-1ubuntu1.2 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!

Changed in dosfstools (Ubuntu Precise):
status: In Progress → Fix Committed
tags: added: verification-needed
Pali (pali) wrote :

Tested and new version automatically clean & fix FAT fs. No more error messages in kernel.

tags: added: verification-done
removed: verification-needed
Launchpad Janitor (janitor) wrote :

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 <email address hidden> Tue, 07 Apr 2015 12:19:39 +0200

Changed in dosfstools (Ubuntu Precise):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for dosfstools has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

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