From owner-freebsd-hardware Wed Jan 12 16:51:50 2000 Delivered-To: freebsd-hardware@freebsd.org Received: from panzer.kdm.org (panzer.kdm.org [216.160.178.169]) by hub.freebsd.org (Postfix) with ESMTP id 73EE215035 for ; Wed, 12 Jan 2000 16:51:44 -0800 (PST) (envelope-from ken@panzer.kdm.org) Received: (from ken@localhost) by panzer.kdm.org (8.9.3/8.9.1) id RAA93664; Wed, 12 Jan 2000 17:49:37 -0700 (MST) (envelope-from ken) Date: Wed, 12 Jan 2000 17:49:37 -0700 From: "Kenneth D. Merry" To: Joerg Micheel Cc: sthaug@nethelp.no, grios@ddsecurity.com.br, ohoyer@fbwi.fh-wilhelmshaven.de, freebsd-hardware@freebsd.org Subject: Re: hardware Message-ID: <20000112174937.D93414@panzer.kdm.org> References: <387D0354.63159B8@ddsecurity.com.br> <72218.947717759@verdi.nethelp.no> <20000113124314.I5228@cs.waikato.ac.nz> <20000112165428.A93083@panzer.kdm.org> <20000113132414.K5228@cs.waikato.ac.nz> <20000112173358.A93414@panzer.kdm.org> <20000113134211.M5228@cs.waikato.ac.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <20000113134211.M5228@cs.waikato.ac.nz>; from joerg@cs.waikato.ac.nz on Thu, Jan 13, 2000 at 01:42:11PM +1300 Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, Jan 13, 2000 at 13:42:11 +1300, Joerg Micheel wrote: > On Wed, Jan 12, 2000 at 05:33:58PM -0700, Kenneth D. Merry wrote: > > > rawio -c 256 causes bad reads on the disk. > > > > What do you mean it causes bad reads? Are there any error message printed > > out? > > 58 [negara] (root) # rawio -c 256 /dev/rda0c > Random read Sequential read Random write Sequential write > ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec > anon Child 1 Bad read at 1291010048: (null) (671942847), iocount 14 > Child 0 Bad read at 1940982272: (null) (671942847), iocount 14 > Child 2 Bad read at 1813053440: (null) (671942847), iocount 14 > Child 5 Bad read at 2025523200: (null) (671942847), iocount 14 > Child 6 Bad read at 2036186624: (null) (671942847), iocount 14 > Child 4 Bad read at 1428914688: (null) (671942847), iocount 14 > Child 3 Bad read at 625769472: (null) (671942847), iocount 14 > Child 7 Bad read at 2126529024: (null) (671942847), iocount 14 > 4249.6 47 ^C > > 256 is the maximum on FreeBSD (according to the manpage). Hmm. And there are no error messages printed on the console? 256 blocks == 128K, so you might be running into some sort of problem with physio, but I would think that anything too big would just get broken up into multiple chunks. Well, I dunno what those errors mean, you'd probably have to talk to Greg or look at the source to decipher them. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message