磁盘不分区，直接格式化后挂载

# mkfs.ext4 /dev/sdb
mke2fs 1.42.9 (28-Dec-2013)
/dev/sdb is entire device, not just one partition!
无论如何也要继续? (y,n) y
文件系统标签=
OS type: Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
65536 inodes, 262144 blocks
13107 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=268435456
8 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376

Allocating group tables: 完成                            
正在写入inode表: 完成                            
Creating journal (8192 blocks): 完成
Writing superblocks and filesystem accounting information: 完成


# mount /dev/sdb /mnt/data1/

# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda               8:0    0   40G  0 disk 
├─sda1            8:1    0    1G  0 part /boot
└─sda2            8:2    0   39G  0 part 
  ├─centos-root 253:0    0 35.1G  0 lvm  /
  └─centos-swap 253:1    0  3.9G  0 lvm  [SWAP]
sdb               8:16   0    1G  0 disk /mnt/data1