[linux-lvm] Concise LVM Summary

[<linux_user98765@yahoo.com>]

I'm trying to write a perl script to give concise output of 
pvs, vgs, lvs, pvdisplay, vgdisplay, lvdisplay and df -- something
like:


VG home [PE (4MB): 0 (0 b) / 52205 (203.93 GB)]
LV /dev/home/lvol0 /home [LE: 52205 (203.93 GB); DF: 64G/201G (129G)
34%]
PV /dev/sdb [PE (4096KB): 0 (0 b) / 38156 (149.05 GB); DF: ??/149G (??)
??%]
PV /dev/hdb4 [PE (4096KB): 0 (0 b) / 14049 (54.88 GB); DF: ??/55G (??)
??%]


however, there are a few things I have yet to figure out:

- determine the actual disk usage of a particular PV in a given LV
- the lvs column option which produces the heading "Log"
- the nature of the pvs,vgs,lvs separator inconsistencies:

lvs - Headers and LV lines are separator terminated
vgs - Headers not separator terminated, VG lines are
pvs - Headers not separator terminated, PV lines are

- The unabreviated names of the column headings
  (a website detailing each would be nice)
- whether pvdisplay,vgdisplay,lvdisplay offer anything more than
  pvs, vgs, lvs with all columns displayed
- Why the majority of pvs,vgs,lvs columns lack data

I'm still working on the code, but the above are the major stumbling
blocks I've come across so far...

TIA!

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