[CentOS] Re: Anaconda doesn't support raid10

[Ruslan Sivak]

Ross S. W. Walker wrote:
>> -----Original Message-----
>> From: centos-bounces at centos.org 
>> [mailto:centos-bounces at centos.org] On Behalf Of Ruslan Sivak
>> Sent: Thursday, May 10, 2007 4:31 PM
>> To: CentOS mailing list
>> Subject: Re: [CentOS] Re: Anaconda doesn't support raid10
>>
>> Ross S. W. Walker wrote:
>>     
>>>> 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
>>>
>>>   
>>>       
>> Ross,
>>
>> Thank you for the links.  Looks like my controller doesn't 
>> support NCQ 
>> :-(.  I have the SIL 3114 based card.  Doesn't look like 
>> there are any 
>> cheap alternatives on the PCI bus, but I think I can live with the 
>> performance of this system.
>>     
>
> How did it go creating the interleaved LVs?
>
> -Ross
>
>   

It worked... I think. 

I already had the LVM partitions set up, but when I booted up into the 
install, and went to the shell, I couldn't see them (although the 
installer saw them).  I had to do raidstart on all my md devices, and 
then scan by doing somethign liek vgscan and lvscan, and then the 
devices showed up.  So I deleted them and re-added them, per your 
instructions, and when I printed out the config, looks like they were 
striping.  I was then able to install on it.  So I don't think the 
reboot step is necessary, you just need to precreate the config manually 
in the shell first.

Thanks for your help. 

Russ