Raid5 w/ mdadm request for help.

[Rashkae]

chris wrote:
> /* cross posted to forums as well */
> 
> I have an issue that I'm hitting a brick wall on and hope that someone
> here can help me out.
> 
> I have 2 servers.   Hoth v2  and Hoth v3   v3 being the new better
> faster server. :)
> 
> Hoth v2 = Gutsy
> Hoth v3 = Hardy
> 
> Brought up v3 and added in the new hard drvies for the array  8x500
> with 1 more for a spare (9 total).
> 
> rsynced the data from v2 to v3.
> 
> After 4 days of rsync... I did the following.
> 
> o removed the partitions on the drvies in v2.
> o shut the box down and gutted it.
> o put the 8x 400 w/ 1 spare (9 total) from v2 itno v3.
> 
> Turned on v3.  v3 FREAKED.  wouldn't bring up /dev/md0 which was the
> original 500s it was built with.  Figured out that it was b/c drive
> assignments changed.  Fixed that
> 

I sort of lost track of where things when horribly wrong and what you've
done so far to fix.

To clarify, if you remove the drives you've added, does the system
recover md0 and work? or is your data housing array now hosed?