From owner-freebsd-questions Sat May 30 15:18:29 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA14422 for freebsd-questions-outgoing; Sat, 30 May 1998 15:18:29 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from elephants.dyn.ml.org (root@mki4-pl-ri23.kos.net [206.186.40.63]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA14260 for ; Sat, 30 May 1998 15:17:52 -0700 (PDT) (envelope-from jake@elephants.dyn.ml.org) Received: from elephants.dyn.ml.org (jake@elephants.dyn.ml.org [127.0.0.1]) by elephants.dyn.ml.org (8.8.8/8.8.8) with ESMTP id SAA01012 for ; Sat, 30 May 1998 18:20:24 -0400 (EDT) (envelope-from jake@elephants.dyn.ml.org) Message-Id: <199805302220.SAA01012@elephants.dyn.ml.org> X-Mailer: exmh version 2.0.2 2/24/98 To: freebsd-questions@FreeBSD.ORG Subject: some ccd questions Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sat, 30 May 1998 18:20:24 -0400 From: Jake Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi, soon as I have the money I want to add a second hard drive to my system, identical to the one I have now ( wd caviar AC22500 ) I'd like to configure part of it using the ccd driver, namely my swap and /usr partitions. I'm running a pretty recent build of -current. Here's my plan: root - wd0s1a ~50 megs /var - wd2s1a ~50 megs swap - ccd0c ; wd0s1b & wd2s1b ~64 megs each, 128 total /usr - ccd1c ; wd0s1e & wd2s1e ~1 gig each, 2 gigs total the letters might be wrong, I'm just extrapolating from my fstab and the man page, but you get the drift. wd0s2 and wd2s2 will be fat32 partitions, for win95, storage, my ftp site, etc... Is this nuts? Can the ccd driver stripe slices together? all the examples are "ccdconfig ccd0 32 0 /dev/sd2e /dev/sd3e" ... no "s1" Since it'll mostly be a random-access oriented workload I figured I'd use a large interleave, maybe 65,536. Should swap be the same? Should I use the CCDF_SWAP ( 0x01 ) flag for swap? I know this won't give me much of a performance boost in General Use, seek time vs. sequential read/write performance but I need the space, and I figured it would speed up make world and kernel compiles. Maybe I'll be able to capture video from my bt848 without the system being completely bogged down by disk access. Thanks... Jake -- http://www.checker.org/~jake To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message