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From: John Nielsen <lists@jnielsen.net>
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Date: Wed, 10 Oct 2007 18:17:55 -0400
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Cc: ivoras@freebsd.org
Subject: removing / replacing in-use components in gvirstor
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Ivan-

I was happy to see in the FreeBSD status report that gvirstor has been 
committed to CVS and will be in RELENG_7. Obviously this is great 
functionality with many potential uses. Thanks for your great work and 
efforts to get it committed!

In thinking about how I personally would use it, I realized I would add 
drives to a system until I ran out of slots or controller connections, and 
then want to upgrade to larger drives. From the manpage (and the code) it 
doesn't look like this is currently possible unless the drive you want to 
replace happens to be unused. How feasible would it be to either extend 
the "remove" verb to migrate in-use chunks to other (existing) providers or 
create a "replace" verb to migrate in-use chunks to a new provider?

Thanks,

JN