[root@localhost ~]# resize2fs /dev/vg_livecd/lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_livecd/lv_root is mounted on /; on-line resizing required
old desc_blocks = 4, new_desc_blocks = 13
Performing an on-line resize of /dev/vg_livecd/lv_root to 52428800 (4k) blocks.
resize2fs: Operation not permitted While trying to add group #512
[root@localhost ~]# resize2fs /dev/vg_livecd/lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_livecd/lv_root is mounted on /; on-line resizing required
old desc_blocks = 4, new_desc_blocks = 13
Performing an on-line resize of /dev/vg_livecd/lv_root to 52428800 (4k) blocks.
resize2fs: Operation not permitted While trying to add group #512