Subject: Re: Abysmal PATA IDE performance
From: Arjan van de Ven <arjan@infradead.org>
To: "J.A." =?ISO-8859-1?Q?Magall=F3n?= <jamagallon@ono.com>
Cc: Stephen.Clark@seclark.us,
       =?ISO-8859-1?Q?Bj=F6rn?= Steinbrink <B.Steinbrink@gmx.de>,
       Mark Lord <lkml@rtr.ca>, linux-kernel <linux-kernel@vger.kernel.org>
In-Reply-To: <20061109094014.1c8b6bed@werewolf-wl>
References: <455206E7.2050104@seclark.us> <45526D50.5020105@rtr.ca>
	 <455277E1.3040803@seclark.us> <20061109020758.GA21537@atjola.homenet>
	 <4552A638.4010207@seclark.us>  <20061109094014.1c8b6bed@werewolf-wl>
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Organization: Intel International BV
Date: Thu, 09 Nov 2006 09:58:20 +0100
Message-Id: <1163062700.3138.467.camel@laptopd505.fenrus.org>
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> Probably your drives are renamed.
> Before you had (wild guess, look at your boot log messages):
> - ata bus -> hdc,hdd
> - sata -> sda (if you really have any sata bus...)
> 
> Now all hdX become sdX, and PATA is detected _before_ SATA, so you names
> probaly became:
> - ata via libata -> sda (HD), sr0 (CDROM)
> - sata -> sdb.

on fedora this doesn't matter (due to mount-by-label)

the bigger problem I suspect is that the sata modules aren't part of the
initrd!

you can force the issue by adding

alias scsi_hostadapter1 ata_piix

to the /etc/modprobe.conf file, and then recreating the initrd
(see the mkinitrd tool, or just install the kernel rpm)


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