From owner-freebsd-hackers Mon Nov 22 22: 2:35 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from aurora.sol.net (aurora.sol.net [206.55.65.76]) by hub.freebsd.org (Postfix) with ESMTP id B771614A04 for ; Mon, 22 Nov 1999 22:02:26 -0800 (PST) (envelope-from jgreco@aurora.sol.net) Received: (from jgreco@localhost) by aurora.sol.net (8.9.2/8.9.2/SNNS-1.02) id AAA04318; Tue, 23 Nov 1999 00:01:53 -0600 (CST) From: Joe Greco Message-Id: <199911230601.AAA04318@aurora.sol.net> Subject: Re: Non-standard FFS parameters In-Reply-To: from Andrzej Bialecki at "Oct 8, 1999 10:10: 0 pm" To: abial@webgiro.com (Andrzej Bialecki) Date: Tue, 23 Nov 1999 00:01:53 -0600 (CST) Cc: dillon@apollo.backplane.com, freebsd-hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL43 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > On Fri, 8 Oct 1999, Matthew Dillon wrote: > > > :> > > :> Adjusting the bytes-per-inode (-i) specification in newfs should not > > :> pose a problem. > > : > > :IOW now you say it's ok to use very high values of -i... ;-) > > : > > :Andrzej Bialecki > > > > No, I didn't say that. My recommended maximum is still 262144. Fsck > > should be reasonably fast with that number and the filesystem should > > still be able to maintain reasonable efficiency. > > Ok, I can live with that, I guess. Thanks a lot for your help! What's the recommended way to reduce the number of cylinder groups a bit? -c's maximum limit is affected by combinations of -b and -i, possibly some others. PHK was talking about new, more sensible values for filesystem parameters, but I don't know what happened. I just think it's a bit silly to go generating hundreds of cg's for a 34GB unit... and this _with_ the max -c setting of 26 (for this fs). /dev/vinum/rn8: 63700992 sectors in 15552 cylinders of 1 tracks, 4096 sectors 31104.0MB in 599 cyl groups (26 c/g, 52.00MB/g, 256 i/g) super-block backups (for fsck -b #) at: 32, 106528, 213024, 319520, 426016, 532512, 639008, 745504, 852000, 958496, ... Joe ------------------------------------------------------------------------------- Joe Greco - Systems Administrator jgreco@ns.sol.net Solaria Public Access UNIX - Milwaukee, WI 414/342-4847 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message