LVM Object Mapping

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Probably a silly question, but it got asked of me today... Is there a good utility for mapping how a PV is used within a VG?

I'm generally fairly anal-retentive about how I lay out data - such that having a tool to create a pretty picture of how my PVs' extents are consumed hasn't been generally necessary. Worst case, I could always parse the /etc/lvm/backup files to backtrack things.

That said, VxVM used to have tools that would chart out how disks were cut up into subdisks and how those subdisks were used within the volumes of a  diskgroup. Just wondering if there are cognates within LVM2. I looked at pvs/lvs/vgs, but, they don't reall provide a nice, neat and self-explanatory mapping.

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