From owner-freebsd-current Fri Jan 10 14:01:42 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id OAA05776 for current-outgoing; Fri, 10 Jan 1997 14:01:42 -0800 (PST) Received: from hydrogen.nike.efn.org (resnet.uoregon.edu [128.223.170.28]) by freefall.freebsd.org (8.8.4/8.8.4) with ESMTP id OAA05769 for ; Fri, 10 Jan 1997 14:01:37 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by hydrogen.nike.efn.org (8.8.4/8.8.4) with SMTP id OAA29220; Fri, 10 Jan 1997 14:01:25 -0800 (PST) Date: Fri, 10 Jan 1997 14:01:25 -0800 (PST) From: John-Mark Gurney Reply-To: John-Mark Gurney To: Ken Ingram cc: FreeBSD-current@freebsd.org Subject: Re: Adding Hard Drives - Prepping In-Reply-To: <199701102058.MAA29789@ipro.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Fri, 10 Jan 1997, Ken Ingram wrote: > One final question before I move on to -questions. > > Newfs gives the 'Warning: 3984 sector(s) in last cylinder unallocated > /dev/rwd2s1e: 2121840 sectors in 519 cylinders of 1 tracks, 4096 sectors > 1036.1MB in 33 cyl groups (16 c/g, 32.00MB/g, 7680 i/g) > > The disk is 1035MB and 526 cylinders. After mounting df -k reports > app. 950MB available. > > How do I get maximal use out of the disk? Or is the result of the system? > (If so why the warning?) the way FFS keeps the disk nice in speedy is that it keeps a percentage of the disk as `root' only... with this extra room it is able to keep files that other fs's (like fat) from becoming fragmented... the default is 8% if I remeber... the warning above is because newfs is saying the cylindar size is 4096 sectors... back in the old days when cylindar sizes were constant throughout the whole disk (now they have zones with different sectors/track density)... this would allow some more speed opimizations... the above warning says you are only leaving about 2megs of diskspace at the end that isn't used... for this reason I try to hit partion sizes at exactly 4096... ttyl.. John-Mark gurney_j@efn.org http://resnet.uoregon.edu/~gurney_j/ Modem/FAX: (541) 683-6954 (FreeBSD Box) Live in Peace, destroy Micro$oft, support free software, run FreeBSD (unix)