Message-ID: <49C5DEE5.6090205@davidnewall.com>
Date: Sun, 22 Mar 2009 17:17:01 +1030
From: David Newall <davidn@davidnewall.com>
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To: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>
CC: linux-kernel@vger.kernel.org
Subject: Re: df -h shows ~10 times bigger size when umounting pendrive
References: <200903220150.16004.a.miskiewicz@gmail.com>
In-Reply-To: <200903220150.16004.a.miskiewicz@gmail.com>
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Arkadiusz Miskiewicz wrote:
> While umount was running and data were synced on the
> pendrive df -h showed:
>
> [arekm@t400 ~]$ df -h
> System plik�w         rozm. u�yte dost. %u�. zamont. na
> /dev/sda3             9,6G  4,2G  5,5G  44% /
> /dev/sdb1             9,6G  4,2G  5,5G  44% /media/floppy
>   

This looks to me like a race between umount and df.  By the time df had
read mtab (to find the mounted filesystem), the pen drive had already
been unmounted; but umount hadn't yet updated mtab.  It's a pretty
trivial sort of fault, and not worth worrying about.
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