Re: [git patches] libata updates

From: Stephen Clark
Date: Mon Apr 30 2007 - 16:22:40 EST


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 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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