pve下的虚拟机扩容

在web端硬件-磁盘-磁盘操作增加磁盘大小

再依靠gparted,没有的话就安装下

apt install gparted

root@l4rkserver:~/omnivore# parted /dev/sda

GNU Parted 3.4
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) print                                                            
Warning: Not all of the space available to /dev/sda appears to be used, you can fix the GPT to use all of the space (an extra 10485760 blocks) or continue with the current setting?
Fix/Ignore? fix                                                           
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 26.8GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  2097kB  1049kB                        bios_grub
 2      2097kB  2150MB  2147MB  linux-swap(v1)        swap
 3      2150MB  21.5GB  19.3GB  ext4

(parted) resizepart 3 100%
Warning: Partition /dev/sda3 is being used. Are you sure you want to continue?
Yes/No? y
(parted) print                                                            
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 26.8GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  2097kB  1049kB                        bios_grub
 2      2097kB  2150MB  2147MB  linux-swap(v1)        swap
 3      2150MB  26.8GB  24.7GB  ext4

root@l4rkserver:~/omnivore# resize2fs /dev/sda3                           
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/sda3 is mounted on /; on-line resizing required
old_desc_blocks = 3, new_desc_blocks = 3
The filesystem on /dev/sda3 is now 6028795 (4k) blocks long.

搞定