阿里云挂载SSD

阿里云购买的第2块云盘默认是不自动挂载的，需要手动配置挂载上。

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

将云盘挂载到/opt目录下。

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。