On Mon, 13 Dec 1999 22:42:30 +0100 (MET), "Peter T. Breuer"
<ptb@it.uc3m.es> said:
> This is a "union block (virtual) device". It does transparant
> hot mirroring. You can bind any device to any other device
> while they are working and they'll start mirroring each other.
Does this really need a new device driver? The existing raid-1
mirroring code allows you to hot-add new disks to the array already.
It also allows you to add hot-add spare disks, so that if one of the
main disks fails the kernel will automatically bring in one of the
spares and start using it as a primary mirror disk.
--Stephen
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