My friend has an external sata hard disk, and likes the hot-plug feature. However, that works only if the appropriate sata setting in the motherboard bios is set to AHCI (IDE compatibility and RAID are two other options, but hot-plugging doesn't work with them). The machine has WinXP atm, while Linux is about to be installed in the following couple of days.
Now, on wikipedia I read that AHCI is supported starting from kernel 2.6.19 and later, while current CentOS 5.2 has 2.6.18. Is it possible to make AHCI work under 2.6.18 or should I install Fedora instead?
Fedora will become obsolete in a year or so, and I will not be around to reinstall it again for him, so I would prefer a long-term solution (CentOS). But I need to be sure that it can be made to do all that fancy hot-plug-auto-mount-sata-ahci stuff without too much hassle.
Oh, btw, I am talking about hot-plugging using the sata cable --- usb connection of course already works, but this is a hard disk and speed increase is highly nontrivial when using sata connection compared to usb.
Any suggestions?
Thanks! :-) Marko
On 02/08/2009 10:57 AM, Marko Vojinovic wrote:
My friend has an external sata hard disk, and likes the hot-plug feature. However, that works only if the appropriate sata setting in the motherboard bios is set to AHCI (IDE compatibility and RAID are two other options, but hot-plugging doesn't work with them). The machine has WinXP atm, while Linux is about to be installed in the following couple of days.
Now, on wikipedia I read that AHCI is supported starting from kernel 2.6.19 and later, while current CentOS 5.2 has 2.6.18. Is it possible to make AHCI work under 2.6.18 or should I install Fedora instead?
AFAIK, Centos5 (RHEL5) has support for this in kernel.
$grep SATA /boot/config-2.6.18-92.el5 CONFIG_SATA_AHCI=m
Fedora will become obsolete in a year or so, and I will not be around to reinstall it again for him, so I would prefer a long-term solution (CentOS). But I need to be sure that it can be made to do all that fancy hot-plug-auto-mount-sata-ahci stuff without too much hassle.
Oh, btw, I am talking about hot-plugging using the sata cable --- usb connection of course already works, but this is a hard disk and speed increase is highly nontrivial when using sata connection compared to usb.
Any suggestions?
Thanks! :-) Marko
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Hi,
I use a sata rack at work, on C5.2, ahci works fine. It has been backported (as several other things that appeared after 2.6.18). hotplug works too. Laurent
On Sunday 08 February 2009 13:24, Laurent Wandrebeck wrote:
I use a sata rack at work, on C5.2, ahci works fine. It has been backported (as several other things that appeared after 2.6.18). hotplug works too.
Ok, that's good news! If it is backported, it will probably work out of the box. I'll install C5.2 on that machine tomorrow, and try it out.
Thanks! :-) Marko
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Laurent Wandrebeck -
lucianīŧ lastdot.org -
Marko Vojinovic