linux-kernel - Re: [PATCH] libata: add human-readable error value decoding

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Message-ID: <20070511015512.611352ac@the-village.bc.nu>
Date:	Fri, 11 May 2007 01:55:12 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Robert Hancock <hancockr@...w.ca>, Mark Lord <liml@....ca>,
	Tejun Heo <htejun@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] libata: add human-readable error value decoding

> Scrollback rarely works as planned, for me.  Overall, a balance must be 
> found.
> 
> More information is more helpful.  But.
> 
> There are downsides to spewing everything possible, upon error.  You 
> cause logging to the possibly problematic disk, you push older messages 
> out of the printk ring buffer, etc., etc.

Get yourself a Voodoo5 or similar card cheap off ebay. The firmware on
most of them doesn't clear the top 30MB of RAM on a reboot/PCI reset
which makes them excellent debug buffers providing you empty the buffer
before you run the X server.

Alan
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