How to modify an LV and VG RHEL and HP UX

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How to deactivate a Volume group and a Logical volume?

Deactivating a VG is :-

#vgchange -a n vg01

If we want to Remove cluster awareness from a VG is :-

#vgchange -c n vg01

then we should deactivate a VG

#vgchange -a n vg01


Deactivate an LV logical volume, before removing it is advised.

In my case, i have create usr file system on another VG on my oracle virtual BOX.

[root /]#
[root /]# lvremove /dev/mapper/vgdb-usr
Do you really want to remove active logical volume usr? [y/n]: y^C
  Logical volume usr not removed
[root /]#
[root /]#
[root /]# lvchange -a n /dev/mapper/vgdb-usr
[root /]# lvremove /dev/mapper/vgdb-usr
  Logical volume "usr" successfully removed
[root /]#
now you should remove a VGif needed or demand of the situation.