Lunix 系统挂在云盘

查看现在的系统挂载目录情况

df -h

Filesystem      Size  Used Avail Use% Mounted on
udev            7.7G     0  7.7G   0% /dev
tmpfs           1.6G  3.2M  1.6G   1% /run
/dev/vda1        40G  3.3G   35G   9% /
tmpfs           7.8G     0  7.8G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup
tmpfs           1.6G     0  1.6G   0% /run/user/0

查看当前服务器下的云盘列表

fdisk -l
Disk /dev/vda: 40 GiB, 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
Disklabel type: dos
Disk identifier: 0xc0f4f2f1

Device     Boot Start      End  Sectors Size Id Type  #已挂载
/dev/vda1  *     2048 83886046 83883999  40G 83 Linux


Disk /dev/vdb: 100 GiB, 107374182400 bytes, 209715200 sectors  # 未挂载
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

 

接下来我们将/dev/vdb 磁盘挂载到 /mnt 目录中

#创建 /mnt 目录
mkdir -p /mnt

硬盘分区(依次输入:n -> p -> 回车 ->回车-> 回车 -> wq)

fdisk /dev/vdb

Welcome to fdisk (util-linux 2.31.1).
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.
Created a new DOS disklabel with disk identifier 0x8b3ada07.

Command (m for help): n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1): # 回车
First sector (2048-209715199, default 2048): # 回车
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199): # 回车

Created a new partition 1 of type 'Linux' and of size 100 GiB.

Command (m for help): wq
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

 

查看磁盘的设备

fdisk -l
Disk /dev/vda: 40 GiB, 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
Disklabel type: dos
Disk identifier: 0xc0f4f2f1

Device     Boot Start      End  Sectors Size Id Type
/dev/vda1  *     2048 83886046 83883999  40G 83 Linux


Disk /dev/vdb: 100 GiB, 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
Disklabel type: dos
Disk identifier: 0x8b3ada07

Device     Boot Start       End   Sectors  Size Id Type   # 新磁盘
/dev/vdb1        2048 209715199 209713152  100G 83 Linux

 

格式化 /dev/vdb1 格式为ext4

mkfs.ext4 /dev/vdb1 

mke2fs 1.44.1 (24-Mar-2018)
Creating filesystem with 26214144 4k blocks and 6553600 inodes
Filesystem UUID: 5c751782-a33e-4650-8407-1caafbfb29a8
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 (131072 blocks): done
Writing superblocks and filesystem accounting information: done

挂载 /dev/vdb1 到/mnt

echo /dev/vdb1 /mnt ext4 defaults 0 0 >> /etc/fstab   # 向 /etc/fstab 写入新分区信息
mount /dev/vdb1 /mnt   # 挂载文件系统

 

查看系统挂载目录

df -h

Filesystem      Size  Used Avail Use% Mounted on
udev            7.7G     0  7.7G   0% /dev
tmpfs           1.6G  3.2M  1.6G   1% /run
/dev/vda1        40G  3.3G   35G   9% /
tmpfs           7.8G     0  7.8G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup
tmpfs           1.6G     0  1.6G   0% /run/user/0
/dev/vdb1        98G   61M   93G   1% /mnt

 

可以看到最后一行多了磁盘目录，说明已经挂载成功