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一、查看是否有未挂载的数据盘

1、查看挂载现状

df -h

2、查询未挂载详情

sudo fdisk -l

3、总结

从上面结果可以看出，还有一个一百多G的数据盘没有挂载

已全部挂载显示如下：

二、数据盘分盘并挂载（超过2T的都可以）

1、查看未分区所在盘

sudo fdisk -l

2、开始分区

parted /dev/vdb

GNU Parted 3.1
Using /dev/vdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p    # P                                                            
Error: /dev/vdb: unrecognised disk label
Model: Virtio Block Device (virtblk)                                      
Disk /dev/vdb: 107GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags: 
(parted) mklabel gpt     # mklabel gpt                                             
Warning: The existing disk label on /dev/vdb will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No? y    # y                                                             
(parted) mkpart   # mkpart                                                        
Partition name?  []? vdb1 # vdb1 不要和已分配的名字重复
File system type?  [ext2]? ext4  #   ext4                                       
Start? 0  # 0                                                                
End? 107GB  # 107GB 盘的总大小                                                              
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? Ignore # Ignore
(parted) p  # p                                                             
Model: Virtio Block Device (virtblk)
Disk /dev/vdb: 107GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: Number  Start   End    Size   File system  Name  Flags1      17.4kB  107GB  107GB               vdb1(parted) quit #  quit 退出                                                          
Information: You may need to update /etc/fstab.

3、编译挂载

cd /
# 创建挂载的文件夹
mkdir /homeE
# 编译
mkfs.ext4 /dev/vdb1
# 挂载
mount /dev/vdb1 /homeE
# 查看挂载情况
df -h

4、开机自动挂载

vim /etc/fstab......
/dev/vdb1   /homeE    ext4   defaults  0 0