>I'm not sure if this is a timestamp or a count of clean shutdowns.  Does
>anyone know?

Well, the setup wasn't mission critical or I would have imaged it out safely so 
I proceeded to shutdown the machine and unplug the secondary drive. I then 
booted and saw the array obviously had a missing component. I did my 
reconfiguration and it was good. I shutdown, plugged the secondary back in and 
then booted. The arrays didn't automatically re-establish the pair(?), so I # 
mdadm /dev/md0 -a /dev/sdb1 and # mdadm /dev/md1 -a /dev/sdb2 as md0 is the 
/boot partition and md1 is the LVM pv that holds swap and /. It all went well 
as I had # watch -n1 'cat /proc/mdstat' running.

Not as slick as the higher end machines with hardware raid and hot swappable 
back planes but it saved me either waiting for a painfully slow dd of the disc 
or a re-install if what I did failed.

Thanks everyone!
jlc
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