linux-kernel - Re: [git patches] libata updates

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Date:	Mon, 30 Apr 2007 16:22:18 -0400
From:	Stephen Clark <Stephen.Clark@...lark.us>
To:	Jeff Garzik <jeff@...zik.org>
CC:	Chuck Ebbert <cebbert@...hat.com>, linux-ide@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [git patches] libata updates

Jeff Garzik wrote:

>Chuck Ebbert wrote:
>  
>
>>Jeff Garzik wrote:
>>    
>>
>>>Jeff Garzik (8):
>>>      libata/IDE: remove combined mode quirk
>>>      
>>>
>>You can't just remove the "combined_mode=" kernel parameter or
>>every Linux user who uses that will get an unbootable kernel
>>with no good way of diagnosing the problem. It should still
>>be accepted and just print a warning.
>>    
>>
>
>No, most modern distros will simply Just Work(tm) due to mount by label, 
>udev, and similar gadgets.
>
>As long as you have at least one (if not both) ATA drivers, you have a 
>kernel that will boot your hardware.  And by definition those using 
>combined_mode= do indeed have the necessary drivers.
>
>	Jeff
>
>
>
>-
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>Please read the FAQ at  http://www.tux.org/lkml/
>
>  
>
Please don't do this!

Yeah the kernel will boot but the hd performance is sh*t on my laptop. I 
am running FC6 with
kernel 2.6.21 and without the combined_mode setting my disk performance 
goes down to a
whopping 1.25mb/sec from 44mb/sec when I boot with combined_mode=libata. 
It make my
system unusable!

Regards,
Steve

-- 

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)



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