Disk /dev/sda: 640.1 GB, 640135028736 bytes
255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x000cb3c4
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1233676287 616837120 83 Linux
/dev/sda2 1233678334 1250263039 8292353 5 Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5 1233678336 1250263039 8292352 82 Linux swap / Solaris
http://askubuntu.com/questions/124465/how-do-i-shrink-the-root-partition-lv-on-lvm
http://blog.shadypixel.com/how-to-shrink-an-lvm-volume-safely/
http://askubuntu.com/questions/60431/how-do-i-resize-root-partition