[CentOS] Centos 5.3, no AHCI on HP DL320 G5p?

Tue Jul 28 09:21:33 UTC 2009
Tony Mountifield <tony at softins.clara.co.uk>

In article <4A6D7F2A.9030303 at krediidipank.ee>,
Veiko Kukk <veiko.kukk at krediidipank.ee> wrote:
> chandlercody at gmail.com wrote:
> > I had to disable it with ahci=no at boot time, have you tried ahci=yes at boot time of kernel?
> > ------Original Message------
> > From: Ned Slider
> > Sender: centos-bounces at centos.org
> > To: CentOS mailing list
> > ReplyTo: CentOS mailing list
> > Subject: Re: [CentOS] Centos 5.3, no AHCI on HP DL320 G5p?
> > Sent: Jul 27, 2009 5:23 AM
> > 
> > Veiko Kukk wrote:
> >> I have one HP Proliant DL320 G5p, where for some reason, the AHCI mode 
> >> is not enabled. According to server specs, it should have AHCI/NCQ 
> >> capability, but ata_piix module gets loaded during bootup, not ahci module.
> >> Any ideas how to enable AHCI mode?
> >>
> > 
> > I'm not sure for this particular model server, but normally this is a 
> > *BIOS* setting for the SATA controller.
> There are no settings in BIOS for AHCI mode, it's only possible to 
> choose between raid and sata controller mode, i have chosen sata mode.

That's probably why. To use AHCI you need to set it to RAID mode.
Having done that, you can still use the drives independently if you
prefer kernel RAID; you just have to go into the BIOS RAID setup and
set the drives to JBOD mode (or something like that), by telling it
to remove all RAID information from the drives.

Hope this helps
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org