[CentOS] Install CentOS with degraded raid

Thu Aug 19 21:57:44 UTC 2010
Les Mikesell <lesmikesell at gmail.com>

On 8/19/2010 3:54 PM, m.roth at 5-cent.us wrote:
> Daniel Bareiro wrote:
>>
>> I'm making a text mode installation of CentOS 5.5 on a single disk on
>> which I intend to put a software RAID-1 degraded, thinking of adding
>> another disk later on.
>>
>> But if I try to make the installation in a RAID-1 with a single disk,
>> the system does not allow it. There is any way to do it?
>>
> Um, RAID-1 is mirroring. How can it create a mirror if there's nothing to
> mirror *to*?

mdadm create allows you to specify a device as "missing", and mirrors 
run fine that way, but I don't know how you get the installer to do it. 
The SME server distro (a modified Centos) does that by default if you 
only have one disk when you install so you can easily convert to raid 
later - and it makes a lot of sense.

-- 
   Les Mikesell
    lesmikesell at gmail.com