Re: mdadm.conf unnecessary?

[Richard Scobie <richard@xxxxxxxxxxx>]

Dexter Filmore wrote:

> So the new disks will be sd[efgh]1.
> But when I pull the old drives after migrating, they will be sd[abcd]1.. so... 
> how do I handle this?

Make an mdadm.conf file that reflects your current array and use UUID's 
to identify the arrays - here is an example:

ARRAY /dev/md5 level=raid5 num-devices=4 
UUID=32cd6355:3c2c08a3:970a9f77:c13e51a3

Note, this should be all one line.

This will ensure that regardless of which /dev/sdX a drive is, the array 
will be assembled only from drives which are using this UUID.

mdadm -D /dev/mdX where X is your current array will give you the UUID 
of this array.

Regards,

Richard
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