[linux-lvm] VG and PV

[narsimha.kulkarni at bt.com]

i had created a volume group and physical volume some time back.
I want to delete it and recreate it. the conf file is also not there.

when I do a pvscan, i get

pvscan -- inactive PV "/dev/hda3"  is associated to an unknown VG (run
vgscan)

and when i do a vgscan, i get

vgscan -- reading all physical volumes (this may take a while...)
vgscan -- found active volume group "helena_vg"
vgscan -- ERROR "lv_read_all_lv(): number of LV" can't get data of volume
group)
vgscan -- found active volume group "volg"
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume
groups


i want to delete the vg helena_vg and /dev/hda3 (pv).
can anyone help me please

thanks in advance 
narsimha