Hello Phil,
> your new motherboard or your distro appears to have reacted to the presence of whole-disk raid members by establishing Gnu Partition Tables on them, blowing away those drives' superblocks.
Yes, this was an unpleasant surprise. Won't build them this way again.
> In particular, knowledge of the filesystem or nested structure (LVM?) present on the array will be needed to identify the real data offsets of the three mangled members.
I don't have the history of original creation, but I'm fairly certain
it was something straightforward like:
mdadm --create /dev/md0 {parameters}
sudo mkfs.ext4 /dev/md0
mount /dev/md0 /mnt/raid5
After the array was corrupted I needed to comment out the mount from
my fstab, which was as follows (confirming ext4):
/dev/md0 /mnt/raid5
ext4 defaults 0 0
Cheers,
DJ
