The basic algorithm looks OK, but you should probably try to use the
general functions already available in lvm_tools.sh (part of the
partman-lvm package) instead of the direct calls to pvs and vgs.
I begin at the end, since that was the easy part.
Attached is a patch doing the same, but using the functions from
lvm_tools.sh
I might give a shot at the other issues too, but since i am mostly
fumbeling around it may take quite some time.
Ronny Aasen
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