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Bug#764992: dosfstools: successive runs of fsck -yvV show same error



Package: dosfstools
Version: 3.0.26-4
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

On a file system not normally mounted that had been checked less than an hour
earlier with the same options with the fsck from dosfstools 3.0.26-3, I 
encountered the following:

fsck -yvV /dev/sdc1
fsck from util-linux 2.25.1
[/sbin/fsck.vfat (1) -- /dev/sdc1] fsck.vfat -yv /dev/sdc1
fsck.fat 3.0.26 (2014-03-07)
fsck.fat 3.0.26 (2014-03-07)
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "MSWIN4.1"
Media byte 0xf8 (hard disk)
       512 bytes per logical sector
      4096 bytes per cluster
        40 reserved sectors
First FAT starts at byte 20480 (sector 40)
         2 FATs, 32 bit entries
  14324224 bytes per FAT (= 27977 sectors)
Root directory start at cluster 1392 (arbitrary size)
Data area starts at byte 28668928 (sector 55994)
   3577496 data clusters (14653423616 bytes)
63 sectors/track, 128 heads
        63 hidden sectors
  28675962 sectors total
/
  Bad short file name ().
  Auto-renaming it.
  Renamed to
Reclaiming unconnected clusters.
Checking free cluster summary.
/dev/sdc1: 59384 files, 3478304/3577496 clusters
victoria:/home/amarsh04# fsck -yvV /dev/sdc1
fsck from util-linux 2.25.1
[/sbin/fsck.vfat (1) -- /dev/sdc1] fsck.vfat -yv /dev/sdc1
fsck.fat 3.0.26 (2014-03-07)
fsck.fat 3.0.26 (2014-03-07)
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "MSWIN4.1"
Media byte 0xf8 (hard disk)
       512 bytes per logical sector
      4096 bytes per cluster
        40 reserved sectors
First FAT starts at byte 20480 (sector 40)
         2 FATs, 32 bit entries
  14324224 bytes per FAT (= 27977 sectors)
Root directory start at cluster 1392 (arbitrary size)
Data area starts at byte 28668928 (sector 55994)
   3577496 data clusters (14653423616 bytes)
63 sectors/track, 128 heads
        63 hidden sectors
  28675962 sectors total
/
  Bad short file name ().
  Auto-renaming it.
  Renamed to
Reclaiming unconnected clusters.
Checking free cluster summary.
/dev/sdc1: 59384 files, 3478304/3577496 clusters

I have seen similar behaviour on one other filesystem (normally mounted,
so could be getting corrupted by an unclean shutdown), but not on another
filesystem (not normally mounted).

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.17.0 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages dosfstools depends on:
ii  libc6  2.19-11

dosfstools recommends no packages.

dosfstools suggests no packages.

-- debconf-show failed


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