[CentOS] sata AHCI controllers (real and virtual)

Pasi Kärkkäinen pasik at iki.fi
Mon Oct 4 01:50:21 EDT 2010


On Sun, Oct 03, 2010 at 08:53:17PM -0600, drew einhorn wrote:
> I saw something somewhere about AHCI support requiring kernel 2.6.19 or later.
> But the current CentOS/RHEL stable kernels are 2.6.18
> 

RHEL/CentOS 2.6.18 kernel is very far from kernel.org/upstream 2.6.18.
RHEL/CentOS 2.6.18 kernel contains a LOT of bugfixes and also
feature-backports from newer kernel versions.

.. including AHCI drivers.

-- Pasi

> I'm trying to run CentOS/RHEL in a VirtualBox vm, which by default creates sata
> virtual disks with an AHCI virtual controller.
> 
> These virtual machines are quite unstable, and I'm wondering if the AHCI virtual
> controller is the problem.
> 
> I do have a real physical AHCI controller and I'm wondering if I
> should try it on
> a CentOS/RHEL 5.5 box, or if I should wait for RHEL/CentOS 6, before even
> attempting it.
> 
> -- 
> Drew Einhorn
> 
> "You can see a lot by just looking."
>   --  Yogi Berra
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