linux-kernel - RE: Strange mptbase / mptscsih kernel messages

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Message-ID: <5AE055B67BB5764693E2900C7E3699BE0110FAEB@pamail.ad.lsil.com>
Date:	Thu, 8 May 2008 16:33:58 +0800
From:	"Prakash, Sathya" <Sathya.Prakash@....com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Bart Van Assche" <bart.vanassche@...il.com>
Cc:	"LKML" <linux-kernel@...r.kernel.org>,
	"Moore, Eric" <Eric.Moore@....com>, <linux-scsi@...r.kernel.org>
Subject: RE: Strange mptbase / mptscsih kernel messages

Hi,
The meaning of 1 message is some fram transmit error encountered by
hardware and the I/O request is aborted by firmware because of the
error,
The second message indicates, some I/O got timed out and the SML tries
to abort the request and the firmware completes the I/O before aborting
that. Hence returns IO executed message and the driver completes the
abort as success.
Suspecting some bad hardware in the topology(cables?)
Thanks
sathya 

-----Original Message-----
From: linux-scsi-owner@...r.kernel.org
[mailto:linux-scsi-owner@...r.kernel.org] On Behalf Of Andrew Morton
Sent: Thursday, May 08, 2008 1:57 PM
To: Bart Van Assche
Cc: LKML; Moore, Eric; linux-scsi@...r.kernel.org
Subject: Re: Strange mptbase / mptscsih kernel messages

On Thu, 8 May 2008 08:36:03 +0200 "Bart Van Assche"
<bart.vanassche@...il.com> wrote:

> Hello,
> 
> I have made a setup with four servers, where each server is configured

> as follows:
> * Four Intel Xeon E5130 CPU cores.
> * 8 GB RAM.
> * SCSI storage controller: LSI Logic / Symbios Logic SAS1068E 
> PCI-Express Fusion-MPT SAS (rev 04),
> * 16 disks in a RAID6 setup (md).
> * Linux 2.6.24.6 kernel.
> 
> There is a lot of data being written to the RAID6 array: about 50 MB/s

> on each server. There are two kinds of messages that appear:
> 
> (1)
> [74887.117650] mptbase: ioc0: LogInfo(0x31120403): Originator={PL}, 
> Code={Abort}, SubCode(0x0403)
> 
> (2)
> [74917.081454] mptscsih: ioc0: attempting task abort! 
> (sc=ffff8100a18a7180) [74917.081461] sd 0:0:15:0: [sdp] CDB: 
> Write(10): 2a 00 1c fe 61 93 00 00 20 00 [74918.409801] mptbase: ioc0:

> LogInfo(0x31140000): Originator={PL}, Code={IO Executed}, 
> SubCode(0x0000) [74918.639801] mptscsih: ioc0: task abort: SUCCESS 
> (sc=ffff8100a18a7180)
> 
> These messages appear a few times per day. Anyone any idea what the 
> meaning is of these messages and what the cause of these messages is ?
> 

(suitable cc's added)

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