[Libguestfs] [PATCH 0/2] Add API for querying the relationship between LVM objects

Currently I found it it's hard to determine the relationship between LVM objects, by which I mean "what PVs contain a VG?", or "what LVs are contained in a VG?" This simple API exposes that to callers. {lv,vg,pv}uuid: Return the UUID of an LVM object. You can already get this using (eg.) lvs_full, but this is a lot less faffing around. vg{lv,pv}uuids: Return the LVs belonging to a VG, or the PVs containing a VG. It returns them as UUIDs, so if you build up a map using the previous calls, then you can map them back to names, or keep them as UUIDs as required. There's an example Perl program included which demonstrates how to do this. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top