From owner-freebsd-questions Fri Aug 13 23: 3:17 1999 Delivered-To: freebsd-questions@freebsd.org Received: from metis.host4u.net (metis.host4u.net [209.150.128.22]) by hub.freebsd.org (Postfix) with ESMTP id A0F1C14CCF for ; Fri, 13 Aug 1999 23:03:04 -0700 (PDT) (envelope-from dan.langille@dvl-software.com) Received: from wocker (210-55-152-99.ipnets.xtra.co.nz [210.55.152.99]) by metis.host4u.net (8.8.5/8.8.5) with SMTP id BAA30404 for ; Sat, 14 Aug 1999 01:02:52 -0500 Message-Id: <199908140602.BAA30404@metis.host4u.net> From: "Dan Langille" Organization: DVL Software Limited To: freebsd-questions@freebsd.org Date: Sat, 14 Aug 1999 18:03:31 +1200 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: how to fix bad disk reads Reply-To: dan.langille@dvl-software.com X-mailer: Pegasus Mail for Win32 (v3.01d) Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I've been doing some testing of some old scsi drives. I getting some errors. How serious are these errors and what can I do about them? the rawio program is courtesy of Greg Lehey. # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon Child 2 Bad read at 1050112000: 0 of 13824 bytes 820.1 51 2662.8 163 Child 4 Bad write at 1050112000: 0 of 512 bytes 836.9 52 1233.5 75 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon Child 2 Bad read at 1050112000: 0 of 13824 bytes 820.1 51 2662.8 163 Child 4 Bad write at 1050112000: 0 of 512 bytes 836.9 52 1233.5 75 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon 841.3 52 2662.2 162 836.3 52 1324.8 81 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon Child 5 Bad read at 1050112000: 0 of 22016 bytes Child 4 Bad read at 1050115072: (null) (671939448), iocount 22 833.8 51 2890.9 176 Child 7 Bad write at 1050127360: (null) (671939448) Child 4 Bad write at 1050125312: (null) (671939448) 819.1 51 1324.3 81 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon 841.9 52 3378.4 206 834.9 51 1324.2 81 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon 843.1 52 3082.7 188 827.2 52 1155.2 71 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon 840.6 52 3427.4 209 836.9 52 1260.8 77 # rawio -a /dev/rda2s1e Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec anon 839.9 52 3115.3 190 841.7 52 1325.7 81 -- Dan Langille - DVL Software Limited The FreeBSD Diary - http://www.FreeBSDDiary.org/freebsd/ NZ FreeBSD User Group - http://www.nzfug.nz.freebsd.org/ The Racing System - http://www.racingsystem.com/racingsystem.htm To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message