From owner-freebsd-scsi@FreeBSD.ORG Fri Aug 11 16:01:35 2006 Return-Path: X-Original-To: freebsd-scsi@freebsd.org Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EB5F216A4DE for ; Fri, 11 Aug 2006 16:01:35 +0000 (UTC) (envelope-from anderson@centtech.com) Received: from mh2.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7BDC343D45 for ; Fri, 11 Aug 2006 16:01:35 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh2.centtech.com (8.13.1/8.13.1) with ESMTP id k7BG1WA6018701; Fri, 11 Aug 2006 11:01:32 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <44DCA9F1.1000302@centtech.com> Date: Fri, 11 Aug 2006 11:01:53 -0500 From: Eric Anderson User-Agent: Thunderbird 1.5.0.5 (X11/20060802) MIME-Version: 1.0 To: Geoff Buckingham References: <44DB8A9C.8090609@centtech.com> <44DC6F9F.4060405@centtech.com> <20060811154348.GA83765@chuggalug.clues.com> In-Reply-To: <20060811154348.GA83765@chuggalug.clues.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.87.1/1646/Fri Aug 11 04:51:17 2006 on mh2.centtech.com X-Virus-Status: Clean Cc: freebsd-scsi@freebsd.org Subject: Re: isp issues on recent -STABLE X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Aug 2006 16:01:36 -0000 On 08/11/06 10:43, Geoff Buckingham wrote: > On Fri, Aug 11, 2006 at 06:53:03AM -0500, Eric Anderson wrote: >> [..snip..] >> Aug 9 23:02:10 snapshot1 kernel: isp0: command timed out for 0.2.2 >> Aug 9 23:02:10 snapshot1 kernel: (da8:isp0:0:2:2): Command timed out >> Aug 9 23:02:10 snapshot1 kernel: (da8:isp0:0:2:2): Retrying Command >> Aug 9 23:26:58 snapshot1 kernel: (da3:isp0:0:1:0): Queue Full >> Aug 9 23:26:58 snapshot1 kernel: (da3:isp0:0:1:0): tagged openings now 254 > > I don't what may have changed in the driver recently, but from your post > you seem to be using the FC isp and potentially a "SAN" presenting arrays as > luns to you rather than JBOD on a loop or switch. > > If you you have some kind of data mover presenting arrays, your SAN vendor > may well recomend a maximum queue size per lun (often 20-30) I have this one host connected to a single QLogic fiber channel switch, which has 5 ACNC fiber channel arrays attached to it, along with a tape robot and tape drives. Three of the arrays present 3 LUNs each (2TB per LUN), and two of them present 2 LUNs each, 4GB and 10TB - I'm not using these two arrays much yet, and are not really associated with the problems. > man camcontrol, look at the tags section. > > Your commands may be timing out because you have managed to queue too many > command (which I hope should not happen). Or..... > > Your queues could be filling because your commands are timing out. Which > would imply something is broke :-( Strange that I've never hit this in the past, but now I seem to be hitting it quite often. The vendor of the arrays says queue depth is 256 per LUN, and that coincides with my messages above I believe. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------