[root@localhost ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          7860       1348       6511          0         38        355
-/+ buffers/cache:        954       6905
Swap:         4095          0       4095
[root@localhost ~]# fdisk -l /dev/dm-0

Disk /dev/dm-0: 319.9 GB, 319865782272 bytes
255 heads, 63 sectors/track, 38888 cylinders, total 624737856 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000908c1

     Device Boot      Start         End      Blocks   Id  System
/dev/dm-0p1   *        2048     2099199     1048576   83  Linux
/dev/dm-0p2         2099200    35653631    16777216   83  Linux
/dev/dm-0p3        35653632    44042239     4194304   82  Linux swap / Solaris
/dev/dm-0p4        44042240   624736255   290347008   83  Linux
[root@localhost ~]#