linux-kernel - Re: Regression impacts ServeRAID II on IBM xSeries 5500

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Date:	Sat, 25 Jul 2009 00:59:05 +0930
From:	David Newall <davidn@...idnewall.com>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
CC:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: Regression impacts ServeRAID II on IBM xSeries 5500

FUJITA Tomonori wrote:
> Sorry for the delay,
>   

No problem. I appreciate your time.

> On Sat, 18 Jul 2009 16:30:00 +0930
> David Newall <davidn@...idnewall.com> wrote:
>   
>> According to "git bisect," your patch
>> 10db10d144c0248f285242f79daf6b9de6b00a62 is the first bad commit before
>> a regression which affects my ServeRAID II controller.  I get segfault
>> running ipssend, which is the program used to interrogate and configure
>> the SCSI RAID controller.
>>
>>     ipssend[5949]: segfault at 20202020 ip b7ece8b1 sp bfce1d1c error 6 in libc-2.9.so[b7e55000+15c000]
>>     
>
> Can I get 'ipssend' source code? I'm not sure what ipssend does (I
> guess, it issues some special commands via sg).
>   

It's provided by IBM with their ServeRAID CD, and not available in
source as far as I can discover. The RAID hardware uses Adaptec chips
and I think ipssend was written by them.


>> My machine and assistance is at your disposal.  Rather than guess what
>> information you want: what can I tell you?
>>     
>
> What kernel version do you use, the latest git tree?

I was running Ubuntu's 2.6.28-13-server, but have reverted to their
2.6.27-10-server, that being the latest Ubuntu-provided version on which
ipssend works. The patch which apparently introduced the regression is
for 2.6.27-rc9, which is quite old. The regression was a year ago, and
although I've found quite a few people who have the same problem, I
haven't found any indication of the problem having been previously
reported or bisected, so it's likely the latest version still has the
problem. I am happy to try the latest version of you want.
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