Re: RAID5 not being reassembled correctly after device swap

[David Greaves <david@dgreaves.com>]

Michael Frotscher wrote:
> Hello all,
> 
> I guess you can say that I'm at my wit's end. I really don't get it. An RAID 
> array is suppose to recognize its members purely by its uuid, isn't it? So 
> technically, I can remove a drive from one bus, reconnect it to another 
> giving it a new device name and the array should not even need to sync.
> 
> Somehow it doesn't. Somehow the array remembers of which devices it's supposed 
> to be assembled and boots in degraded mode, funnily not always missing the 
> swapped drive.
> 
> Suppose I lose a whole ide-controller and want to restart the box with a 
> seconday controller? That one would surely not have the devices hda through 
> hdd and my array would refuse to start.
> 
> Does anyone have a suggestion of what I can try? Ok, the array runs fine as 
> long as it is connected to its original bus, but I really don't want to take 
> chances here.

Do you have a mdman.conf file that specifies/limits partitions to search?

David