How to remove lvm in rhel 6:-
#mount=show mounted place
#umount /dev/mylg
#mount
#first delete logical volume:-
#lvdisplay
#lvremove /dev/myvggroup/test1
#yes
#vgdisplay=to view volume group
#vgremove myvggroup
#vgdisplay
#if we want to convert those physical volumes in simple partition:-
#pvremove /dev/sdb1 /dev/sda1 /dev/sda3(who are in type of physical volume
#successfully created in simple volume
