Howto resize a partition

Command line:
[root]# df -m
[root]# lvm
(starts lvm command line)
Within lvm command line:
lvm> lvdisplay

-- resize swap to 1G
lvm> lvresize /dev/vg_f13v1/lv_swap --size 1G

-- after the operation your LV size is:( LV Size  1.00 GiB)
lvm> lvdisplay

--now add all remaining free space
lvresize -L +1.6GB /dev/vg_f13v1/lv_root

--trigger the resizing process
[root@f13-jon jon]# resize2fs -p /dev/vg_f13v1/lv_root