linux-kernel - Re: [PATCH] cciss: disable doorbell reset on reset

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Message-ID: <4C723929.2070908@kernel.dk>
Date:	Mon, 23 Aug 2010 11:02:33 +0200
From:	Jens Axboe <axboe@...nel.dk>
To:	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
CC:	akpm@...ux-foundation.org, mikem@...rdog.cce.hp.com,
	linux-kernel@...r.kernel.org, brace@...rdog.cce.hp.com
Subject: Re: [PATCH] cciss: disable doorbell reset on reset_devices

On 2010-08-18 16:45, Stephen M. Cameron wrote:
> From: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
> 
> The doorbell reset initially appears to work correctly,
> the controller resets, comes up, some i/o can even be
> done, but on at least some Smart Arrays in some servers,
> it eventually causes a subsequent controller lockup due
> to some kind of PCIe error, and kdump can end up leaving
> the root filesystem in an unbootable state.  For this
> reason, until the problem is fixed, or at least isolated
> to certain hardware enough to be avoided, the doorbell
> reset should not be used at all.

Thanks Stephen, applied.

-- 
Jens Axboe

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