话题 - vbox Ubuntu无界面动态扩展磁盘空间

###问题：磁盘创建时时动态扩展方式，现在空间已经不足，却没有自动扩展生效磁盘空间
![1714828168094.png](/upload/image/20240504/20240504210929_2A419C300F0FC0CC62151AF90338AD6F.png)
#### 查询当前磁盘情况，显示实际只有19G
```
root@jungle:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              391M  2.5M  389M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   19G   16G  2.2G  88% /
tmpfs                              2.0G     0  2.0G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          2.0G  307M  1.5G  17% /boot
tmpfs                              391M  4.0K  391M   1% /run/user/0

```
#### 用lvextend，给逻辑卷扩容
```
root@jungle:~# lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from <19.00 GiB (4863 extents) to <38.00 GiB (9727 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
```
#### resize2fs，让逻辑卷的扩容生效
```
root@jungle:~# resize2fs  /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.47.0 (5-Feb-2023)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizi                                                            ng required
old_desc_blocks = 3, new_desc_blocks = 5
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 9960448 (4k) blocks                                                             long.
```
#### 查看结果，成功扩大磁盘
```
root@jungle:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              391M  2.5M  389M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   38G   16G   21G  44% /
tmpfs                              2.0G     0  2.0G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          2.0G  307M  1.5G  17% /boot
tmpfs                              391M  4.0K  391M   1% /run/user/0
root@jungle:~# 
```

	南柯	2023
	cxlove	1970
	vainner	1763
4	1000310428赵成帅	1718
5	XiaoWen	1710
6	1000380213洪伟焕	1701
7	weiben	1684
8	Jungle.Wei	1678
9	1100310131曾翔宇	1664
10	hongwh	1653