阿里云CentOS7挂载SSD云盘的方法

本文转自http://blog.youkuaiyun.com/skykingf/article/details/51994680

1.查看SSD云盘

sudo fdisk -l  

Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 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: 0x635e6c7d  

   Device Boot      Start         End      Blocks   Id  System  
/dev/vda1            2048    83886079    41942016   83  Linux  

Disk /dev/vdb: 107.4 GB, 107374182400 bytes, 209715200 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  

可以看到SSD系统已经识别为/dev/vdb

2.格式化云盘

sudo mkfs.ext4 /dev/vdb   
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  
6553600 inodes, 26214400 blocks  
1310720 blocks (5.00%) reserved for the super user  
First data block=0  
Maximum filesystem blocks=2174746624  
800 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  

Allocating group tables: done                              
Writing inode tables: done                              
Creating journal (32768 blocks): done  
Writing superblocks and filesystem accounting information: done   

3.挂载

sudo mount /dev/vdb  /opt 

4.配置开机自动挂载

修改/etc/fstab文件，文件末尾添加

/dev/vdb   /opt ext4    defaults    0  0 

5.重启检查

使用

init 6

优雅的重启系统。
使用

sudo df -h  
Filesystem      Size  Used Avail Use% Mounted on  
/dev/vda1        40G  3.6G   34G  10% /  
devtmpfs        1.9G     0  1.9G   0% /dev  
tmpfs           1.9G     0  1.9G   0% /dev/shm  
tmpfs           1.9G  8.4M  1.9G   1% /run  
tmpfs           1.9G     0  1.9G   0% /sys/fs/cgroup  
/dev/vdb         99G   61M   94G   1% /opt  
tmpfs           380M     0  380M   0% /run/user/1000  

可以看到系统已挂载了SSD云盘。