From owner-freebsd-questions@FreeBSD.ORG Tue Oct 31 08:58:33 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C109116A403 for ; Tue, 31 Oct 2006 08:58:33 +0000 (UTC) (envelope-from smithi@nimnet.asn.au) Received: from gaia.nimnet.asn.au (nimbin.lnk.telstra.net [139.130.45.143]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3D01F43D4C for ; Tue, 31 Oct 2006 08:58:30 +0000 (GMT) (envelope-from smithi@nimnet.asn.au) Received: from localhost (smithi@localhost) by gaia.nimnet.asn.au (8.8.8/8.8.8R1.4) with SMTP id TAA12752 for ; Tue, 31 Oct 2006 19:58:28 +1100 (EST) (envelope-from smithi@nimnet.asn.au) Date: Tue, 31 Oct 2006 19:58:27 +1100 (EST) From: Ian Smith To: freebsd-questions@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: systat -vm not seeing /dev/acd0 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Oct 2006 08:58:33 -0000 Hardly a showstopper, but .. Burned a backup CD on a 4.10-RELEASE system downtown; no problem. Being important, I checked by mounting it (/dev/acd0) and running 'cat /cdrom/* >/dev/null' which was useful verification given all were big compressed files in the CD's root directory. That was taking a while so I ran systat -vm in another vty, watched it reading away at about 2MB/s, more or less as expected from that drive. Got home and (being important) checked it by the same method on a 6.1-R GENERIC system (no /dev/cd0, only acd0 in dmesg). systat -vm showed no acd0 device, just ad0. man systat, tried the :drives command; just ad0 Tried again on a 5.5-S @1stAug system. systat -vm also didn't see acd0, though due to atapicam, scbus & pass in kernel, showed it once remounted on /dev/cd0 - 'Disks ad0 da0 cd0 pass0 pass1'. Same issue with iostat. Copying the CD to ad0 implied the reading rate of course (~3.5MB/s) so that's a workaround for the 6.1-R system, but should I be surprised that {sys,io}stat can't see acd0 as it used to on 4.X? Anything that would? Cheers, Ian