[CentOS] Re: Anaconda doesn't support raid10

Mon May 7 22:54:01 UTC 2007
Ruslan Sivak <rsivak at istandfor.com>

Scott Silva wrote:
> Ruslan Sivak spake the following on 5/7/2007 2:22 PM:
>   
>> Stephen John Smoogen wrote:
>>     
>>> On 5/7/07, Ruslan Sivak
>>> <rsivak at istandfor.com> wrote:
>>>       
>>>> Ross S. W. Walker wrote:
>>>>         
>>>> Whether or not it was designed to create a Raid5/raid10, it allows the
>>>> creating of raid5 and raid6 during install.  It doesn't, however, allow
>>>> the use of raid10 even if it's created in the shell outside of anaconda
>>>> (or if you have an old installation on a raid10).
>>>>
>>>>         
>>> My guess is that software Raid10 is still in the eats its children
>>> stage. Most of the time I found it reliable, but I remember the kernel
>>> developers having lots of race condition problems at times. In a
>>> limited memory install region that is anaconda.. these might creep up
>>> more often to be only supported by hand.
>>>
>>>
>>>
>>>
>>>       
>> Well it's not even supported by hand.  Anaconda flat out refuses to let
>> you use it.  Even when I create the device by hand (be it by loading the
>> raid10 module manually and doing mdadm, or by making 2 raid1's and
>> putting a raid0 on top of them), anaconda just flat out refuses to see
>> the final device.
>>
>> Russ
>>     
> I don't think anaconda will support it or raid 6 for the foreseeable future.
> You have to throw up an upstream complaint, and I doubt you would see anything
> till Fedora Core 8 or so. RedHat's stance seems to be that if you need that
> kind of reliability, buy hardware raid that does raid 10
>
>   
Anaconda does now support raid6.  The only reason I didn't go with it is 
that I heard that performance would be very bad on it. 

Russ