From owner-freebsd-questions Tue Mar 27 5:29:55 2001 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (okc-65-26-235-186.mmcable.com [65.26.235.186]) by hub.freebsd.org (Postfix) with SMTP id 3512F37B718 for ; Tue, 27 Mar 2001 05:29:51 -0800 (PST) (envelope-from mwm@mired.org) Received: (qmail 71147 invoked by uid 100); 27 Mar 2001 13:29:50 -0000 From: Mike Meyer MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15040.38350.352029.194963@guru.mired.org> Date: Tue, 27 Mar 2001 07:29:50 -0600 To: Kris Kennaway Cc: "Ben O." , dyu , questions@FreeBSD.ORG Subject: Re: defragment... In-Reply-To: <20010326161829.B10115@xor.obsecurity.org> References: <15039.49403.536419.975293@guru.mired.org> <00d601c0b650$446e6ba0$0d01a8c0@casystems.net> <20010326161829.B10115@xor.obsecurity.org> X-Mailer: VM 6.89 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Kris Kennaway types: > On Mon, Mar 26, 2001 at 06:55:41PM -0500, Ben O. wrote: > > Why is that Mike? > Because FFS was designed by someone who actually knows how to write > filesystems, so it doesn't need periodic maintenance like the > brain-dead MSDOS filesystem. In particular, there's a small percentage of the disk space that normal users can't write to - but root can - that is used to optimize disk block allocation. I thought this was discussed in the FAQ, but can't seem to find it. As a disk gets really full, you'll also get kernel messages about switching to (or from) space optimization instead of time optimization, etc. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message