五、完成
六、重启虚拟机后，使用lsblk命令查看磁盘情况
[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├―sda1 8:1 0 1G 0 part /boot └―sda2 8:2 0 19G 0 part ├―centos-root 253:0 0 17G 0 lvm / └―centos-swap 253:1 0 2G 0 lvm [SWAP] sdb 8:16 0 5G 0 disk sr0 11:0 1 1024M 0 rom
发现已经成功添加新硬盘sdb。
七、使用fdisk创建新分区
[root@localhost ~]# fdisk /dev/sdb Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Device does not contain a recognized partition table Building a new DOS disklabel with disk identifier 0x03295b0a. Command (m for help):
Command (m for help): p Disk /dev/sdb: 5368 MB, 5368709120 bytes, 10485760 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: 0x03295b0a Device Boot Start End Blocks Id System Command (m for help):
Command (m for help): n Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p):
Select (default p): p Partition number (1-4, default 1): 1 First sector (2048-10485759, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-10485759, default 10485759): Using default value 10485759 Partition 1 of type Linux and of size 5 GiB is set Command (m for help): p Disk /dev/sdb: 5368 MB, 5368709120 bytes, 10485760 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: 0x03295b0a Device Boot Start End Blocks Id System /dev/sdb1 2048 10485759 5241856 83 Linux Command (m for help):
Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks.
八、使用mkfs.ext4命令进行格式化
先查看分区表
[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├―sda1 8:1 0 1G 0 part /boot └―sda2 8:2 0 19G 0 part ├―centos-root 253:0 0 17G 0 lvm / └―centos-swap 253:1 0 2G 0 lvm [SWAP] sdb 8:16 0 5G 0 disk └―sdb1 8:17 0 5G 0 part sr0 11:0 1 1024M 0 rom
发现新分区是sdb1（我只分了一个主分区，所以是sdb1。）然后我们对sdb1进行格式化
[root@localhost ~]# mkfs.ext4 /dev/sdb1 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 327680 inodes, 1310464 blocks 65523 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=1342177280 40 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 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
至此格式化完成。
九、挂载分区
我以挂载到根分区的data目录为例：
新建/data目录
[root@localhost /]# mkdir data
挂载分区到/data目录
[root@localhost /]# mount /dev/sdb1 /data
查看磁盘使用情况
[root@localhost /]# df -hT Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/centos-root xfs 17G 1.3G 16G 8% / devtmpfs devtmpfs 1.9G 0 1.9G 0% /dev tmpfs tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs tmpfs 1.9G 12M 1.9G 1% /run tmpfs tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup /dev/sda1 xfs 1014M 148M 867M 15% /boot tmpfs tmpfs 378M 0 378M 0% /run/user/0 /dev/sdb1 ext4 4.8G 20M 4.6G 1% /data