From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932568AbVHIUMg (ORCPT ); Tue, 9 Aug 2005 16:12:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932566AbVHIUMg (ORCPT ); Tue, 9 Aug 2005 16:12:36 -0400 Received: from mxsf27.cluster1.charter.net ([209.225.28.227]:27561 "EHLO mxsf27.cluster1.charter.net") by vger.kernel.org with ESMTP id S932565AbVHIUMf (ORCPT ); Tue, 9 Aug 2005 16:12:35 -0400 X-IronPort-AV: i="3.96,93,1122868800"; d="scan'208"; a="1423790437:sNHT17542614" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <17145.3629.933024.963438@smtp.charter.net> Date: Tue, 9 Aug 2005 16:12:29 -0400 From: "John Stoffel" To: James Bottomley Cc: John Stoffel , Linus Torvalds , Linux Kernel Mailing List , SCSI Mailing List Subject: Re: Linux-2.6.13-rc6: aic7xxx testers please.. In-Reply-To: <1123617516.5170.42.camel@mulgrave> References: <200508081954.52638.jesper.juhl@gmail.com> <17145.1417.329260.524528@smtp.charter.net> <1123617516.5170.42.camel@mulgrave> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "James" == James Bottomley writes: Thank you for looking into this with me, I really appreciate it. I'm kinda stumped why this suddenly started happening, but it could be hardware related of course... James> So basically the problem is on scsi1 with the tape device, which James> apparently negotiates only narrow async? It's not a performance problem, it's a lockup problem. I use bacula to make my backups using the DLT7000 as my media. But the tape drives hangs, it's hung now so that I can't do my backups. James> What do the domain validation messages say about this device? James> They should be in dmesg. I'm fairly certain that DLT tapes do James> better than narrow async. The drive should be able to do 10MBytes/sec to the interface, the drive itself can only do 5Mbytes/sec to the media, but with 2:1 compression and an 8MB buffer on the drive, it likes to be fed data as quickly as it can. Here's the validation results for my two disks and tape drive: scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36 aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs target0:0:0: asynchronous. Vendor: COMPAQ Model: HC01841729 Rev: 3208 Type: Direct-Access ANSI SCSI revision: 02 scsi0:A:0:0: Tagged Queuing enabled. Depth 32 target0:0:0: Beginning Domain Validation target0:0:0: wide asynchronous. target0:0:0: Domain Validation skipping write tests target0:0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 15) target0:0:0: Ending Domain Validation Vendor: COMPAQ Model: BD018222CA Rev: B016 Type: Direct-Access ANSI SCSI revision: 02 target0:0:1: asynchronous. scsi0:A:1:0: Tagged Queuing enabled. Depth 32 target0:0:1: Beginning Domain Validation target0:0:1: wide asynchronous. target0:0:1: Domain Validation skipping write tests target0:0:1: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 63) target0:0:1: Ending Domain Validation scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36 aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs Vendor: SUN Model: DLT7000 Rev: 1E48 Type: Sequential-Access ANSI SCSI revision: 02 target1:0:6: asynchronous. target1:0:6: Beginning Domain Validation target1:0:6: wide asynchronous. target1:0:6: Domain Validation skipping write tests target1:0:6: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 8) target1:0:6: Ending Domain Validation st: Version 20050501, fixed bufsize 32768, s/g segs 256 Attached scsi tape st0 at scsi1, channel 0, id 6, lun 0 st0: try direct i/o: yes (alignment 512 B), max page reachable by HBA 1048575 SCSI device sda: 35566000 512-byte hdwr sectors (18210 MB) SCSI device sda: drive cache: write through SCSI device sda: 35566000 512-byte hdwr sectors (18210 MB) SCSI device sda: drive cache: write through sda: sda1 sda2 sda3 sda4 < sda5 sda6 > Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 SCSI device sdb: 35565080 512-byte hdwr sectors (18209 MB) SCSI device sdb: drive cache: write through SCSI device sdb: 35565080 512-byte hdwr sectors (18209 MB) SCSI device sdb: drive cache: write through sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 > Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0