linux-kernel - Re: PROBLEM: <AACRAID SCSI RAID DRIVER> in 2.6.25.3 -- reply to your suggestions

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Date:	Wed, 14 May 2008 17:13:29 +0900
From:	Takuya Yoshikawa <yoshikawa.takuya@....ntt.co.jp>
To:	Mark Salyzyn <Mark_Salyzyn@...ptec.com>
CC:	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	AACRAID <AACRAID@...ptec.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Fernando Luis Vázquez Cao 
	<fernando@....ntt.co.jp>
Subject: Re: PROBLEM: <AACRAID SCSI RAID DRIVER> in 2.6.25.3 -- reply to your
 suggestions

Reply to your suggestions,

1. with the kernel parameters, **aacraid.expose_physicals=0, 
aacraid.dacmode=0**:
I tried both parameters, but failed.

2. about "[PATCH] Stop using num_physpages in aacraid":
I am not using this patch: I saw drivers/scsi/aacraid/aachba.c 
(kernel-2.6.25.3)

3. about other kernels
Our machine normally runs with kernel-2.6.24 and
this failure occurs only with kernel-2.6.25 and later, including 2.6.26-rc1

Sincerely,
-------------------------------------------------------------
Takuya Yoshikawa @ NTT Open Source Software Center
e-mail: yoshikawa.takuya@....ntt.co.jp
-------------------------------------------------------------


> Not a panic, merely a problem probing the physical devices. It may 
> seem 'forever' but that is what happens when it must issue commands to 
> every target and lun on two physical busses. You may be able to 
> mitigate this with the kernel parameter aacraid.expose_physicals=0, or 
> aacraid.dacmode=0
>
> Status 8193 (0x2003) is not a known valid response code from the 
> Firmware, it is a result of the Firmware not processing the command in 
> the first place.
>
> Could be a result of 'Subject: Re: [PATCH] Stop using num_physpages in 
> aacraid '? Could you revert that one out to see? Could you instrument 
> the return value to the new referenced function 
> dma_get_required_mask(&dev->pdev->dev) that is incorporated in that 
> patch?
>
> Sincerely -- Mark Salyzyn
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