RE: Re: Anaconda doesn't support raid10

["Ross S. W. Walker" <rwalker@xxxxxxxxxxxxx>]

> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx 
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Ruslan Sivak
> Sent: Thursday, May 10, 2007 3:44 PM
> To: CentOS mailing list
> Subject: Re:  Re: Anaconda doesn't support raid10
> 
> Ross S. W. Walker wrote:
> >> How would I know if my system is using NCQ?  I think my 
> >> drives and card 
> >> should support it.
> >>     
> >
> > Get the controller make/model and look it up, then get the drives
> > make/model and look it up. If they both support NCQ then you should
> > be good.
> >
> > While your there get the sustained data transfer rate, total read
> > seek time (includes rotational latency) and total write seek time.
> >
> > -Ross
> >
> >   
> 
> I can get all that data, but can I actually test it somehow?  
> Does linux 
> know anything about NCQ, or is everything abstracted to the 
> controller?

Good question, not knowing the answer I did a quick google and this
came to the top:

http://linux-ata.org/driver-status.html

another good one,

http://blog.kovyrin.net/2006/08/11/turn-on-ncq-on-ich-linux/

Looks like support wasn't added until 2.6.18 and isn't widely
supported until 2.6.19 and 2.6.20.

-Ross

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