1、查看磁盘信息（/dev/sdb为新增磁盘容量10G）
# fdisk -l Disk /dev/sda: 32.2 GB, 32212254720 bytes, 62914560 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 label type: dos Disk identifier: 0x000a44f5 Device Boot Start End Blocks Id System /dev/sda1 * 2048 2099199 1048576 83 Linux /dev/sda2 2099200 62914559 30407680 8e Linux LVM Disk /dev/sdb: 10.7 GB, 10737418240 bytes, 20971520 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 /dev/mapper/centos-root: 29.0 GB, 28982640640 bytes, 56606720 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 /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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
2、格式化新增磁盘（/dev/sdb）
# mkfs.ext4 /dev/sdb mke2fs 1.42.9 (28-Dec-2013) /dev/sdb is entire device, not just one partition! Proceed anyway? (y,n) y Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 655360 inodes, 2621440 blocks 131072 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2151677952 80 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 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
3、创建磁盘挂载目录并手动挂载
# mkdir /data # mount /dev/sdb /data # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 27G 2.5G 25G 10% / devtmpfs 990M 0 990M 0% /dev tmpfs 1001M 0 1001M 0% /dev/shm tmpfs 1001M 8.6M 992M 1% /run tmpfs 1001M 0 1001M 0% /sys/fs/cgroup /dev/sda1 1014M 125M 890M 13% /boot tmpfs 201M 0 201M 0% /run/user/0 /dev/sdb 9.8G 37M 9.2G 1% /data
4、设置开机自动挂载，查看磁盘UUID信息
# blkid /dev/sda1: UUID="18931213-eba9-473f-97e8-40dfce8a5b13" TYPE="xfs" /dev/sda2: UUID="gOZr1z-paNd-sA8t-H1zM-3mB7-SgWw-s2mAY2" TYPE="LVM2_member" /dev/sr0: UUID="2017-09-06-10-51-00-00" LABEL="CentOS 7 x86_64" TYPE="iso9660" PTTYPE="dos" /dev/sdb: UUID="f495dd82-2924-4af4-9262-d4a71f1156e3" TYPE="ext4" /dev/mapper/centos-root: UUID="923f04fc-3873-4b15-bbd8-9432ba3d7ea5" TYPE="xfs" /dev/mapper/centos-swap: UUID="5de5f520-90b4-4016-8f32-b90d784b2ad2" TYPE="swap"
5、增加自动挂载磁盘信息， 修改（vim /etc/fstab）配置文件：
添加以下信息 UUID=f495dd82-2924-4af4-9262-d4a71f1156e3 /data ext4 defaults 0 0
6、执行下面命令测试是否可以挂载成功
mount -a
7、重启服务器测试
# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 27G 2.5G 25G 10% / devtmpfs 990M 0 990M 0% /dev tmpfs 1001M 0 1001M 0% /dev/shm tmpfs 1001M 8.6M 992M 1% /run tmpfs 1001M 0 1001M 0% /sys/fs/cgroup /dev/sdb 9.8G 37M 9.2G 1% /data /dev/sda1 1014M 125M 890M 13% /boot tmpfs 201M 0 201M 0% /run/user/0