Date: Fri, 3 Sep 1999 14:57:57 -0500 (CDT) From: David Scheidt <dscheidt@tumbolia.com> To: Steve Friedrich <SteveFriedrich@Hot-Shot.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: df inconsistency Message-ID: <Pine.NEB.3.96.990903145051.75185B-100000@shell-3.enteract.com> In-Reply-To: <199909031914.PAA21107@laker.net>
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On Fri, 3 Sep 1999, Steve Friedrich wrote: > df output on my system: > Filesystem 1K-blocks Used Avail Capacity Mounted on > /dev/wd1s1e 1113967 929244 95606 91% /usr > > Problem is that (total blocks) - (used blocks) does not equal > (available blocks) > 1113967 - 929244 = 184723 = 83% > > 95606/1113967 = 9% (so the inverse is 91%) > > So it appears that 89117 are "unavailable" but not counted as "used". Yup. It is the space that FFS reserves for its own use. See the newfs(8) and tunefs(8) man pages. It is a tunable, which should be left alone unless you know what you are doing. FFS reserves the space so that it can do effective fragmentation avoidance. If you want to know more, see http://docs.freebsd.org/cgi/getmsg.cgi?fetch=486037+0+current/freebsd-hackers David To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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