Remove /home partition and expand / to full size of disk
Backup any data inside your server first!
umount /home
lvremove /dev/vg*/lv_home
Do you really want to remove active logical volume lv_home? [y/n]: y
Logical volume "lv_home" successfully removed
Logical volume "lv_home" successfully removed
lvresize -l +100%FREE /dev/vg*/lv_root
Size of logical volume vg_30/lv_root changed from 50.00 GiB (12800 extents) to 107.41 GiB (27496 extents).
Logical volume lv_root successfully resized
Logical volume lv_root successfully resized
resize2fs /dev/vg*/lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_30/lv_root is mounted on /; on-line resizing required
old desc_blocks = 4, new_desc_blocks = 7
Performing an on-line resize of /dev/vg_30/lv_root to 28155904 (4k) blocks.
The filesystem on /dev/vg_30/lv_root is now 28155904 blocks long.
Filesystem at /dev/vg_30/lv_root is mounted on /; on-line resizing required
old desc_blocks = 4, new_desc_blocks = 7
Performing an on-line resize of /dev/vg_30/lv_root to 28155904 (4k) blocks.
The filesystem on /dev/vg_30/lv_root is now 28155904 blocks long.
Now delete the line containing the /home partition in /etc/fstab
If you do not remove the /home partition line from /etc/fstab your server will fail to boot next time it is restarted.