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Create a volume group from a logical volume instead of a physical volume

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linux-howto

http://unix.stackexchange.com – Is it possible to create a volume group from a logical volume instead of a physical volume? If so, are there any pitfalls in doing so? Use case: Installing OpenStack Compute on a a system that already has all of the physical volumes assigned to a singe volume group. The nova-volume service requires a separate volume group, as described in the documentation. I want to know if I can carve off a logical volume and then create the "nova-volumes" volume group. (HowTos)