My look at the code indicates that it _might_ be easy to implement with a
workaround
that copies the linear md code but instead of md_map-ping the block to a
different sector,
it simply tells the caller to write it to two devices.
I also am interested in figuring out a way to boot from hard disk 2 if hd1 has
a hardware
failure. This may be impossible w/o floppy booting and then transferring
control to a hard
disk. I'd rather not introduce a floppy into the system (obviously, I'm trying
to create a
fail-safe system that no one ever has to physically do anything to).
Any thoughts on the disk-mirroring patch or changing which hd gets booted
would be greatly appreciated.
Mike Slemmer
slemmer@cs.stanford.edu