linux-kernel - Re: need fusion driver guide

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Date:	Tue, 06 Jan 2009 22:21:14 -0600
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	linux linux <linux.tina@...il.com>
Cc:	Sam Ravnborg <sam@...nborg.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org
Subject: Re: need fusion driver guide

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.

> 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


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