查看磁盘信息
[root@localhost ~]# fdisk -l
Disk /dev/vda: 85.9 GB, 85899345920 bytes
16 heads, 63 sectors/track, 166440 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0009345c
Device Boot Start End Blocks Id System
/dev/vda1 * 3 1018 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/vda2 1018 166441 83373056 8e Linux LVM
Partition 2 does not end on cylinder boundary.
Disk /dev/vdb: 536.9 GB, 536870912000 bytes
16 heads, 63 sectors/track, 1040253 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000有一块500G的盘还未挂载
格式化硬盘
[root@localhost ~]# mkfs.ext4 /dev/vdb
mke2fs 1.41.12 (17-May-2010)
文件系统标签=
操作系统:Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
32768000 inodes, 131072000 blocks
6553600 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=4294967296
4000 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
正在写入inode表: 完成
Creating journal (32768 blocks): 完成
Writing superblocks and filesystem accounting information: 完成
This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.创建目录并挂载
[root@localhost ~]# mkdir /opt
[root@loaclhost ~]# mount /dev/vdb /opt
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_centos6-lv_root
50G 4.8G 42G 11% /
tmpfs 12G 224K 12G 1% /dev/shm
/dev/vda1 477M 115M 337M 26% /boot
/dev/mapper/vg_centos6-lv_home
26G 68M 24G 1% /home
tmpfs 60M 0 60M 0% /var/log/rtlog
/dev/vdb 493G 70M 467G 1% /opt看到已经挂载成功了
开机自动挂载
[root@sql ~]# blkid
/dev/vdb: UUID="a9e87164-def8-42ae-9770-708b6d090fbd" TYPE="ext4"
#查看UUID 并添加到/etc/fstab
[root@sql ~]# vi /etc/fstab
UUID=a9e87164-def8-42ae-9770-708b6d090fbd /opt ext4 defaults 0 0