linux-kernel - Re: VFAT complains that my file system may be corrupted

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Date:	Mon, 06 May 2013 20:44:05 +0200
From:	Oleksij Rempel <bug-track@...her-privat.net>
To:	Tony Luck <tony.luck@...il.com>
CC:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: VFAT complains that my file system may be corrupted

Am 06.05.2013 20:36, schrieb Tony Luck:
> Built Linus' tree this morning (HEAD =
> d7ab7302f970a254997687a1cdede421a5635c68) and got this message:
>
> FAT-fs (sda1): Volume was not properly unmounted. Some data may be
> corrupt. Please run fsck.
>
> when booting my ia64 machine.  The message may well be legitimate
> because I did crash the machine, so the filessytem was not unmounted
> cleanly.
>
> BUT ... If I unmount and run fsck as it suggests, then I see:
>
> # fsck /boot/efi
> fsck from util-linux-ng 2.16
> dosfsck 2.11, 12 Mar 2005, FAT32, LFN
> There are differences between boot sector and its backup.
> Differences: (offset:original/backup)
>    65:01/00
> 1) Copy original to backup
> 2) Copy backup to original
> 3) No action
>
> I tried option 3 - fsck made no other changes, but I still see the
> message. I tried
> option 1 - and I still see the message. So I went for option 2 ... and
> guess what,
> I still see the message when I mount this filesystem.
>
> Note that with either option 1 or 2 "fsck" says:
>
> Leaving file system unchanged.
> /dev/sda1: 20 files, 19865/255496 clusters
>
> This is the first time I've ever seen this message ... but I haven't
> had this system crash for some time, so not really sure when this may
> have started.

Hi Tony,
i provided patches for dosfstools for some time now, you need at least 
v3.0.14. If your system do not provide it you will need to grub it here:
http://daniel-baumann.ch/gitweb/?p=software/dosfstools.git


-- 
Regards,
Oleksij
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