RE: Device naming and raid1

["Steve Fairbairn" <steve@fairbairn-family.com>]

> 
> Any idea on my original question?  If I re-add the drive 
> using the /dev/sdc name will I have problems on the next boot 
> when the drive is named /dev/sda?
> 
> Based on my experience with Linux and other software raid 
> implementations, I'm strongly inclined to think that the 
> device naming doesn't matter - the system will scan the 
> drives at boot looking for raid sets and re-assemble them no 
> matter what major and minor numbers or device names are.  I'm 
> not opposed to finding out the hard way but I'd really like 
> to get a definitive answer now because by the time this 
> system is next rebooted I'll probably have long forgotten about this.
> 

Not an expert in any sense of the word, but if the array is being
identified by its UUID and not by a specific list of devices in
mdadm.conf, then the array should assemble fine after a reboot with the
device names having changed.  I recently had a similar situation where I
added a new PCI-E x1 2 port SATA II card, which promptly pushed all my
other sdx devices down two places.  The raid mounted as expected and all
was/is wonderful.

Hope this helps,

Steve.