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Date: Mon, 29 Sep 1997 01:13:06 +0000 (GMT)
From: Donn Miller <dmm125@bellatlantic.net>
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To: freebsd-questions@FreeBSD.org
Subject: "df" estimates are off
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Hello,

Recently, I've noticed that the df command has been showing negative disk
space, and was wondering how far negative it could go until the /usr
partition was full:

Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/wd0a       48431    39551     5006    89%    /
/dev/wd0s1     423072   392984    30088    93%    /dos
/dev/wd0s4e    548911   526867   -21868   104%    /usr
procfs              4        4        0   100%    /proc

But then I noticed that, for /usr, it shows -21868 avail, but when doing
the math, 22044 is actually available.  For /, shows 5006, but act. free
space is 8880.  The disk usage for /dos is right on target.

Is it because df is allowing for a 'safety margin' of free space, or do I
need to reboot or rebuild some database or something?

Thanks for any responses


	Donn