CENTOS 系统求助_美国VPS_搬瓦工CN2 GIA VPS

今天想把虚拟机系统磁盘扩容，运行VGDISPLAY时，没有显示，这是什么原因？在如此情况下，如何才能知道卷组名？谢谢。
[root@uk-2 ~]# df -Th
Filesystem    Type    Size  Used Avail Use% Mounted on
devtmpfs    devtmpfs  7.9G    0  7.9G 0% /dev
tmpfs       tmpfs    7.9G    0  7.9G 0% /dev/shm
tmpfs       tmpfs    7.9G  9.1M  7.9G 1% /run
tmpfs       tmpfs    7.9G    0  7.9G 0% /sys/fs/cgroup
/dev/sda2    xfs       30G  8.7G 21G  30% /
/dev/sda1    xfs    497M 90M  408M  19% /boot
/dev/sdb1    ext4    63G 53M 60G 1% /mnt/resource
tmpfs       tmpfs    1.6G    0  1.6G 0% /run/user/1000
tmpfs       tmpfs    1.6G    0  1.6G 0% /run/user/0
[root@uk-2 ~]# lsblk -f
NAME FSTYPE LABEL UUID                               MOUNTPOINT
fd0
sda
├─sda1 xfs       efd62c66-c0c1-45b1-848f-ec800f6243e7 /boot
├─sda2 xfs       2c32741d-19d6-4f09-bdbc-a28db4e1d338 /
└─sda3
sdb
└─sdb1 ext4       12c78381-291e-4de0-932a-cf983503c122 /mnt/resource
[root@uk-2 ~]# fdisk -l

Disk /dev/sdb: 68.7 GB, 68719476736 bytes, 134217728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x69c549c6

Device Boot Start End Blocks Id System
/dev/sdb1 128 134215679 67107776 83 Linux

Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x000d853c

Device Boot    Start       End    Blocks Id  System
/dev/sda1 *       2048    1026047    512000 83  Linux
/dev/sda2       1026048 62914559 30944256 83  Linux
/dev/sda3       62914560 83886079 10485760 83  Linux
[root@uk-2 ~]# vgdisplay
[root@uk-2 ~]#

可以把SDB1容量减小扩充到系统盘上吗？怎么把sda3扩充到sda2上？谢谢！
吉林网友:运行前先看看自己硬盘格式是不是LVM吧，无脑扩容最为致命
吉林网友:
[root@uk-2 ~]# df -Th
Filesystem    Type    Size  Used Avail Use% Mounted on
devtmpfs    devtmpfs  7.9G    0  7.9G 0% /dev
tmpfs       tmpfs    7.9G    0  7.9G 0% /dev/shm
tmpfs       tmpfs    7.9G  9.1M  7.9G 1% /run
tmpfs       tmpfs    7.9G    0  7.9G 0% /sys/fs/cgroup
/dev/sda2    xfs       30G  8.7G 21G  30% /
/dev/sda1    xfs    497M 90M  408M  19% /boot
/dev/sdb1    ext4    63G 53M 60G 1% /mnt/resource
tmpfs       tmpfs    1.6G    0  1.6G 0% /run/user/1000
tmpfs       tmpfs    1.6G    0  1.6G 0% /run/user/0
[root@uk-2 ~]# lsblk -f
NAME FSTYPE LABEL UUID                               MOUNTPOINT
fd0
sda
├─sda1 xfs       efd62c66-c0c1-45b1-848f-ec800f6243e7 /boot
├─sda2 xfs       2c32741d-19d6-4f09-bdbc-a28db4e1d338 /
└─sda3
sdb
└─sdb1 ext4       12c78381-291e-4de0-932a-cf983503c122 /mnt/resource
[root@uk-2 ~]# fdisk -l