linux-kernel - Re: DRDY ata message > 2.6.24.7-rt14, not before.

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Date:	Fri, 27 Feb 2009 17:54:38 -0500
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Avuton Olrich <avuton@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Linux IDE <linux-ide@...r.kernel.org>,
	Jeff Garzik <jeff@...ox.com>
Subject: Re: DRDY ata message > 2.6.24.7-rt14, not before.

Avuton Olrich wrote:
> ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
> ata4.00: cmd 35/00:10:b0:70:75/00:00:1f:00:00/e0 tag 0 dma 8192 out
>          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)


Since you are seeing generic timeouts, without additional information, I 
would guess either a problem with interrupt delivery (not uncommon in 
-rt kernels) or you need to force your drives to 1.5Gbps.

	Jeff


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