From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755160AbZALQNe (ORCPT ); Mon, 12 Jan 2009 11:13:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752619AbZALQNX (ORCPT ); Mon, 12 Jan 2009 11:13:23 -0500 Received: from yx-out-2324.google.com ([74.125.44.29]:40513 "EHLO yx-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752612AbZALQNW (ORCPT ); Mon, 12 Jan 2009 11:13:22 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=k68Dv1QlzLVDCRoTMsNepTc1oEPODM5zR6R8FcjjylK5jLK+Cnwhlza7fioGMVdMG7 1klY5ediEPeGvMCddhgZI0hXlj87URaLdgkDGUWow02PbgDGMHLaCpRBRuXbiMb5yI+X iUcQS3/OVFz244X537GCYerRo11rf9gPfSWaE= Message-ID: Date: Mon, 12 Jan 2009 21:43:18 +0530 From: "linux linux" To: "James Bottomley" Subject: Re: need fusion driver guide Cc: "Sam Ravnborg" , LKML , linux-scsi@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20090106214538.GA18370@uranus.ravnborg.org> <1231278625.10475.28.camel@localhost.localdomain> <1231302074.19352.12.camel@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org HI James, I got some idea about fusion driver from this link http://bugzilla.kernel.org/show_bug.cgi?id=12195 And i found there is bug in fusion driver (kernel version 2.6.10) from this link http://www.nabble.com/MPT-fusion-driver,-better-but-still-buggy-at-errors-handling-under-2.6-td1095505.html On Wed, Jan 7, 2009 at 10:54 AM, linux linux wrote: > Hi James,. > Now it should be received by all... > Many many thanks for the help. > > I am sending the kernel log. > > > On Wed, Jan 7, 2009 at 9:51 AM, James Bottomley > wrote: >> >> You still need to turn off html email attachments, otherwise your >> messages won't be accepted by the mailing lists. It will be an option >> like recipient wants text/plain only or something. >> >> On Wed, 2009-01-07 at 09:32 +0530, linux linux wrote: >> > Hi, >> > >> > Sam many thanks for ur help. >> > >> > Hi James, >> > >> > I am getting some error on for fusion device driver. >> > The error message look like this >> > >> > >> > 2F240F4C226078: 19/12/2008 EST 04:42:45, mptscsih: ioc1: >> >> > Attempting task abort! (sc=e40df080) >> > 2F240F6E8C2E00: 19/12/2008 EST 04:42:45, mptbase: ioc1: >> > IOCStatus(0x0048): SCSI Task Terminated >> > 2F240F6E905A98: 19/12/2008 EST 04:42:45, mptscsih: ioc1: >> >> > Attempting task abort! (sc=f7e23680) >> > >> > 2F24117BDA2438: 19/12/2008 EST 04:42:50, mptscsih: ioc1: >> >> > Attempting bus reset! (sc=e40df080) >> > >> > After then the server has been rebooted. >> > >> > I can see the code is written inside /drivers/message/fussion/ >> > mptscsih.c >> > The responsible function is >> > mptscsih_host_reset() >> > i am very new in SCSI fusion device driver. read some help guide from >> > google but still i do not understand when the mptscsih_host_reset() is >> > called by kernel. I normal situation i am not able to see this message >> > in kernel log. >> > Can any one help me to understand when these type of kernel message >> > are comming, is it foe SCSI hardware problem ? >> > when mptscsih_host_reset() will be executed? >> >> It looks like a standard error handling escalation sequence. Why is >> very hard to tell without the entire kernel log. Why there wasn't a >> recovery is also not clear. >> yes its error handler sequence. But as describe into the above link(http://www.nabble.com/MPT-fusion-driver,-better-but-still-buggy-at-errors-handling-under-2.6-td1095505.html) that 2.6.xx xx <= 11, enters an infinit loop attempting to reset the SCSI so the box gets unusable and requires a rough power cycle to recover. So i think that is the reason to restart the server(after "Attempting host reset! )as a power cycle is required to recover. when next time server was booting i got some kernel messages on recovery of SCSI. So recovery is done after reboot the server. Still i do not know how to over come this bug fo infinite loop. If you have any suggestion please let me know. > > Pls let me know when this kind of error handler is happened? > is it for SCSI hard ware failure? > >> > Only one time i show this message in my kernel log, is there any way >> > to reproduce this message manually? >> > >> > where i get much info regarding this issue and SCSI fusion kernel >> > driver except kernel code itself? >> > >> > I am writting this after reading help doc from >> > http://www.lsi.com/insight_center/tech_trends/advanced_architectures/fusionmpt/index.html >> > >> > But still i am very few knowledge to solve it. >> > >> > waiting for your help. >> >> There's not much else I can do. If you post the entire kernel log, the >> fusion people hang out on this list and might see something that >> indicates what the problem is. >> >> James >> >> > Thanks Tina http://teachmeembedded.blogspot.com/