From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 21 May 2001 17:49:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 21 May 2001 17:49:41 -0400 Received: from harpo.it.uu.se ([130.238.12.34]:59088 "EHLO harpo.it.uu.se") by vger.kernel.org with ESMTP id ; Mon, 21 May 2001 17:49:38 -0400 Date: Mon, 21 May 2001 23:49:14 +0200 (MET DST) From: Mikael Pettersson Message-Id: <200105212149.XAA10612@harpo.it.uu.se> To: camm@enhanced.com, linux-kernel@vger.kernel.org Subject: Re: 2.2.19+ide: corrupts ide tape output Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 21 May 2001 14:49:55 -0400, Camm Maguire wrote: >Greetings! 2.2.19+ide, applied the patch because this box has a new >Promise PDC20267 ide controller. 14GB HP Colorado tape drive. Before >we installed the new ide controller and patched the kernel, i.e. with >unpatched 2.2.19 running on a different ide controller, this setup >works just fine. Now I get the following occasionally, which results >in corrupted dumps to tape: > >May 21 10:27:47 intech9 kernel: hdh: status error: status=0x40 { DriveReady } >May 21 10:27:47 intech9 kernel: ide-scsi: Strange, packet command initiated yet DRQ isn't asserted You added a Promise Ultra100 PCI card, right? >>From what I hear, it doesn't support ATAPI devices well, only disks. So if you moved the HP tape drive to the PDC, move it back to the mainboard's IDE controller. Also, don't disable the mainboard's controller thinking you can save some interrupts that way. Andre Hedrick (Linux IDE guy) once wrote that this could cause the PDC to grab IRQ 14, which had some nasty side-effects. (My main box runs with disks on a Promise Ultra100 card and ATAPI CD-RW and tape on the mainboard's IDE (440BX) controller. Both 2.2+ide and 2.4 work fine.) /Mikael