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Date: Fri, 27 Jan 2006 20:10:07 GMT
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To: freebsd-bugs@FreeBSD.org
From: Kris Kennaway <kris@obsecurity.org>
Cc: 
Subject: Re: kern/92432: negative used disk space
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The following reply was made to PR kern/92432; it has been noted by GNATS.

From: Kris Kennaway <kris@obsecurity.org>
To: Jean-Sebastien Roy <js@jeannot.org>
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: kern/92432: negative used disk space
Date: Fri, 27 Jan 2006 15:07:41 -0500

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 On Fri, Jan 27, 2006 at 05:14:34PM +0000, Jean-Sebastien Roy wrote:
 
 > >Description:
 > df often returns a negative used space. For example:
 >=20
 > $ df
 > Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
 > /dev/ad0s1a   1012974    77358   854580     8%    /
 > devfs               1        1        0   100%    /dev
 > /dev/ad0s1g  10154158  4319874  5021952    46%    /home
 > /dev/ad0s1h  99572614 74780342 16826464    82%    /opt
 > /dev/ad0s1d  10154158   -42764  9384590    -0%    /tmp
 > /dev/ad0s1f  10154158  4525194  4816632    48%    /usr
 > /dev/ad0s1e  10154158   161980  9179846     2%    /var
 > procfs              4        4        0   100%    /proc
 >=20
 > While I understand "available" space could be negative, a negative "used"=
  space is quite strange.
 
 This seems to be due to FS corruption.  umount the filesystem and fsck -f i=
 t.
 
 Kris
 
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