On Fri, Jan 29, 2010 at 1:52 PM, Ken D'Ambrosio [off-list ref] wrote:

Okay, so I swapped six drives from one machine to another.  I was very,
very careful to ensure that the drives were plugged in in the
corresponding order that they'd been plugged in in the first machine.
Now, fdisk shows no partitions in two of my three mirrors.  This fills me
with a distinct lack of warmth and fuzziness.  /etc/mdadm/mdadm.conf
addresses the two (MIA) mirrors with /dev/sd[abef]1 designators, which
can, of course, get jumbled in a transition.  Any tips on how to go
forward would be gratefully appreciated -- I *really* don't want to have
to go to backups.

Thanks!

-Ken


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You did make a new mdadm.conf with the correct devices for each array
right? If not try running and seeing if your arrays come up. If they
do then copy /tmp/mdadm.conf to /etc/mdadm/mdadm.conf

mdadm --examine --scan --config=partitions > /tmp/mdadm.conf
mdadm --assemble --scan --config=/tmp/mdadm.conf

Ryan
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