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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.uwa.edu.au!classic.iinet.com.au!news.uoregon.edu!usenet.eel.ufl.edu!news.mathworks.com!tank.news.pipex.net!pipex!news.sprintlink.net!in1.uu.net!EU.net!Austria.EU.net!news.aut.alcatel.at!atusc75!ladavac From: ladavac@aut.alcatel.at (Marino Ladavac) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: df output not adding up Date: 14 Sep 1995 15:45:55 GMT Organization: Alcatel Austria AG Lines: 27 Message-ID: <439inj$658@atusks02.aut.alcatel.at> References: <439a8l$1dvk@sernews.raleigh.ibm.com> NNTP-Posting-Host: atusc75.aut.alcatel.at X-Newsreader: TIN [version 1.2 PL2] Thomas J. Evans (evans@rtp.vnet.ibm.com) wrote: : when I do a df, the amount used+avail does not equal the number of blocks : in the filesystem: : Filesystem 512-blocks Used Avail Capacity Mounted on : /dev/wd0a 593934 308712 237707 56% / : why?? : BTW: I have Essential System Administration, Unix Unleashed, and Mastering : Tools, Taming Daemons. Any other good books that could provide answers : to the more complex questions?? The above contain too much fluff. : thx, Usually, filsystems are tuned so that they reserve a number of blocks for superuser use (about 10%, usually.) That is your missing part. man tunefs(8) (at least, I seem to remember tunefs is in chapter 8) /Alby P.S: the rationale is that superuser should be able to maintain the system even when the filesystem should happen to be full. : -- : Tom Evans TCP/IP Development : TJEVANS@VNET.IBM.COM; (919) 254-4097 : Normal disclaimer applies...