From owner-freebsd-scsi@FreeBSD.ORG Wed Apr 20 20:44:19 2005 Return-Path: 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 3669016A4CE for ; Wed, 20 Apr 2005 20:44:19 +0000 (GMT) Received: from smtp.pspl.co.in (smtp.persistent.co.in [202.54.11.65]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2A37843D4C for ; Wed, 20 Apr 2005 20:44:18 +0000 (GMT) (envelope-from rajesh_ghanekar@persistent.co.in) Received: from [10.33.50.40] (ps2333.persistent.co.in [10.33.50.40] (may be forged)) (authenticated bits=0) by smtp.pspl.co.in (8.12.9/8.12.9) with ESMTP id j3KKiRt1010952 for ; Thu, 21 Apr 2005 02:14:29 +0530 Message-ID: <4266BEBD.3080009@persistent.co.in> Date: Thu, 21 Apr 2005 02:12:37 +0530 From: "Rajesh S. Ghanekar" User-Agent: Mozilla Thunderbird 0.8 (X11/20040913) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-scsi@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAQAAAAQ= X-White-List-Member: TRUE Subject: QLogic Fiber Channel with isp.c X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Apr 2005 20:44:19 -0000 Hi, We had a problem when a disk shelf failed. The error message is as follows: Mar 23 15:33:09 freebsd /kernel: isp0: bad underrun for 0.0 (count > 65536, resid 2147422207, status not marked) I would like to know the reasons of what causes Data Underruns in FC Adapters? Any pointers? Thanks, Rajesh