[mythtv-users] Anyone using RocketRAID?

[Boleslaw Ciesielski]

Brian Wood wrote:
> On Mar 15, 2008, at 11:38 AM, Frosty wrote:
>> If a linux software raid setup of 3 drives, raid5, was taken out of  
>> one
>> machine and placed into another, not identical machine, as long as the
>> kernel supported the new hardware, would it boot?
> 
> Would it work? Yes.
> 
> Would it "boot" is another question. Booting from a software RAID  
> partition can be problematical, as you need the kernel loaded to read  
> the RAID array and need the RAID array to load the kernel.
> 
> Nevertheless booting Linux from a software RAID partition can be done,  
> but is not suggested in most cases.

AFAIK, you can only boot from software RAID if it is RAID1 (and then 
it's trivial :-).

This restriction applies to /boot only, your root filesystem can be 
anything. Since it is software RAID, you can do things like Intel's 
matrix RAID i.e. designate one partition from a physical drive to 
participate in RAID1 and another from the same drive to participate in 
RAID5 or whatever.

Bolek