[root@test ~]# pvcreate /dev/sdc Physical volume "/dev/sdc" successfully created. [root@test ~]# vgcreate centos_home /dev/sdc Volume group "centos_home" successfully created [root@test ~]# lvcreate -L 999G -n my_logical_volume centos_home Logical volume "my_logical_volume" created. [root@test ~]# mkfs.ext4 /dev/centos_home/my_logical_volume mke2fs 1.42.9 (28-Dec-2013) Discarding device blocks: done Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 65470464 inodes, 261881856 blocks 13094092 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2409627648 7992 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done [root@test ~]# mkdir /dbdata [root@test ~]# mount /dev/centos_home/my_logical_volume /dbdata [root@test ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 30G 1.8G 28G 6% / devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 3.9G 9.1M 3.9G 1% /run tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/sda1 497M 81M 417M 17% /boot /dev/sdb1 32G 49M 30G 1% /mnt/resource tmpfs 799M 0 799M 0% /run/user/1000 tmpfs 799M 0 799M 0% /run/user/0 /dev/mapper/centos_home-my_logical_volume 984G 77M 934G 1% /dbdata