Hai LQ
My box is installed with RHEL-5. I am able to configure LVM in X system. But I was unable to configure lvm in text mode. How does it possible? suggest me
Thank You

You should type "man lvm" and read it. It will tell you all the other commands that are used for Logical Volume Manager at the end.

Generally the steps are:
pvcreate = Prepare a disk or partition for LVM (makes the PVs).
vgcreate = Create a Volume Group (VG) - In this step you select which PVs to include. A VG can be thought of as a logical disk.
lvcreate = Create Logical Volumes (LVs) from the VG. These can be thought of sort of like logical partition of the logical disk.

Once you've made the LVs you have to layout a filesystem on them (e.g. with mk2efs for ext2 and ext3 filesystems). You then mount them with the mount command.

You can type "man" for any of the commands I listed above including mk2efs and mount.

Here ya go http://tldp.org/HOWTO/LVM-HOWTO/

Good link. Some people like grimoire better (I find it too detailed).

If you want detail, wrap your head round this http://sunoano.name/ws/public_xhtml/lvm.html