Message-ID: <4C723929.2070908@kernel.dk>
Date: Mon, 23 Aug 2010 11:02:33 +0200
From: Jens Axboe <axboe@kernel.dk>
MIME-Version: 1.0
To: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
CC: akpm@linux-foundation.org, mikem@beardog.cce.hp.com,
        linux-kernel@vger.kernel.org, brace@beardog.cce.hp.com
Subject: Re: [PATCH] cciss: disable doorbell reset on reset_devices
References: <20100818144516.21791.86572.stgit@beardog.cce.hp.com>
In-Reply-To: <20100818144516.21791.86572.stgit@beardog.cce.hp.com>
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On 2010-08-18 16:45, Stephen M. Cameron wrote:
> From: Stephen M. Cameron <scameron@beardog.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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