百度一圈发现没有一个完整操作适合的教程就记录一下本次成功扩展磁盘的案例

在vmware workstation中对虚拟机进行磁盘扩容（注意，有快照的无法扩容，删除快照后扩展后，再创建快照避免操作失误导致数据没了）

第一步吧扩展后的磁盘空间新建

root@asus:~# fdisk /dev/sda

Welcome to fdisk (util-linux 2.34).

Changes will remain in memory only, until you decide to write them.

Be careful before using the write command.

GPT PMBR size mismatch (62914559 != 167772159) will be corrected by write.

The backup GPT table is not on the end of the device. This problem will be corrected by write.

输入N 新建，回车默认默认

Command (m for help): n

Partition number (5-128, default 5):

First sector (62914527-167772126, default 62914560):

Last sector, +/-sectors or +/-size{K,M,G,T,P} (62914560-167772126, default 167772126):

Created a new partition 5 of type 'Linux filesystem' and of size 50 GiB.

输入P查看结果

Command (m for help): p

Disk /dev/sda: 80 GiB, 85899345920 bytes, 167772160 sectors

Disk model: Virtual disk    

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: gpt

Disk identifier: A638BEC5-E54C-4232-AED0-3DB78ADA8443

Device        Start       End   Sectors  Size Type

/dev/sda1      2048   1564671   1562624  763M EFI System

/dev/sda2   1564672   4538367   2973696  1.4G Linux filesystem

/dev/sda3   4538368  33552383  29014016 13.9G Linux filesystem

/dev/sda4  33552384  62914526  29362143   14G Linux filesystem

/dev/sda5  62914560 167772126 104857567   50G Linux filesystem

输入w保存

Command (m for help): w

The partition table has been altered.

Syncing disks.

查看LVM卷信息

root@asus:~# vgdisplay

  --- Volume group ---

  VG Name               ubuntu-vg

  System ID             

  Format                lvm2

  Metadata Areas        2

  Metadata Sequence No  4

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                1

  Open LV               1

  Max PV                0

  Cur PV                2

  Act PV                2

  VG Size