Re: "Enhanced" MD code avaible for review
From: Jeff Garzik
Date: Wed Mar 24 2004 - 21:23:49 EST
Neil Brown wrote:
Choice is good. Competition is good. I would not try to interfere
with you creating a new "emd" driver that didn't interfere with "md".
What Linus would think of it I really don't know. It is certainly not
impossible that he would accept it.
Independent DM efforts have already started supporting MD raid0/1
metadata from what I understand, though these efforts don't seem to post
to linux-kernel or linux-raid much at all. :/
However I'm not sure that having three separate device-array systems
(dm, md, emd) is actually a good idea. It would probably be really
good to unite md and dm somehow, but no-one seems really keen on
actually doing the work.
I would be disappointed if all the work that has gone into the MD driver
is simply obsoleted by new DM targets. Particularly RAID 1/5/6.
You pretty much echoed my sentiments exactly... ideally md and dm can
be bound much more tightly to each other. For example, convert md's
raid.c into device mapper targets... but indeed, nobody has
stepped up to do that so far.
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