These drives came up something like hda, hdi, hdh, hdk, hdm, hdn, hdp,
..
drive. These drives were hda, hdi, and hdk (I only know this because
..
the drives' new names were hde, hdg, and hdo.
So your drives are now hde, hdg, hdo, hdh, hdm, hdn, hdp. Something like
mdadm --assemble /dev/md0 hd[egohmnp]
should do the trick.
--
BTW, speaking of mdadm, with no config file, the commands
mdadm --assemble /dev/md0
mdadm --assemble --scan /dev/md0
mdadm --assemble --scan /dev/md0 /dev/hd[egohmnp]
all segfault. They're probably not sensible commands to run, but it
should give an error in that case.
-jim