1.首先获取要扩容的虚拟机的 UUID
VBoxManage 改命令在C:\Program Files\Oracle\VirtualBox目录内，可先添加该目录到环境变量。
C:\Users\yzkj-1008\VirtualBox VMs\CentOS65197>VBoxManage list hdds
UUID: 297f254e-ada0-4ddd-be61-552226c3df58
Parent UUID: base
State: created
Type: normal (base)
Location: C:\Users\yzkj-\VirtualBox VMs\CentOS65197\centos.vdi
Storage format: VDI
Capacity: MBytes
Encryption: disabled UUID: 840332aa-7efb--b108-cea25b1bded6
Parent UUID: base
State: created
Type: normal (base)
Location: C:\Users\yzkj-\VirtualBox VMs\CentOS65198\CentOS65198-disk1.vdi
Storage format: VDI
Capacity: MBytes
Encryption: disabled UUID: 0e4317e3-2dd1-45f5-82e0-83a4469bf4ab
Parent UUID: base
State: created
Type: normal (base)
Location: C:\Users\yzkj-\VirtualBox VMs\CentOS65199\CentOS65199-disk1.vdi
Storage format: VDI
Capacity: MBytes
Encryption: disabled UUID: 536f5698-b4e0-4d03-bdcc-2450fb802707
Parent UUID: base
State: created
Type: normal (base)
Location: C:\Users\yzkj-\VirtualBox VMs\CentOS65197\newdisk.vdi
Storage format: VDI
Capacity: MBytes
Encryption: disabled
2.虚拟机磁盘扩容
C:\Users\yzkj-1008\VirtualBox VMs\CentOS65197>VBoxManage modifyhd 297f254e-ada0-4ddd-be61-552226c3df58 --resize 16384
3.调整当前硬盘大小
[root@zendlinux ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_zendlinux-lv_root .5G .8G .5G % /
tmpfs 499M 499M % /dev/shm
/dev/sda1 477M 51M 401M % /boot
workspace 22G .4G 16G % /mnt/www [root@zendlinux ~]# fdisk -l Disk /dev/sda: 17.2 GB, bytes
heads, sectors/track, cylinders
Units = cylinders of * = bytes
Sector size (logical/physical): bytes / bytes
I/O size (minimum/optimal): bytes / bytes
Disk identifier: 0x000dc501 Device Boot Start End Blocks Id System
/dev/sda1 * Linux
Partition does not end on cylinder boundary.
/dev/sda2 8e Linux LVM Disk /dev/mapper/vg_zendlinux-lv_root: MB, bytes
heads, sectors/track, cylinders
Units = cylinders of * = bytes
Sector size (logical/physical): bytes / bytes
I/O size (minimum/optimal): bytes / bytes
Disk identifier: 0x00000000
把容量从6.5扩容到17.2G 单还不能使用
将空余磁盘创建为 sda4
[root@zendlinux ~]# fdisk /dev/sda WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u'). Command (m for help): n
Command action
e extended
p primary partition (-)
p
Partition number (-):
First cylinder (-, default ):
Using default value
Last cylinder, +cylinders or +size{K,M,G} (-, default ):
Using default value Command (m for help): t
Partition number (-):
Partition does not exist yet! Command (m for help): t
Partition number (-):
Hex code (type L to list codes): 8e
Changed system type of partition to 8e (Linux LVM) Command (m for help): w
The partition table has been altered! Disk /dev/mapper/vg_zendlinux-lv_swap: MB, bytes
heads, sectors/track, cylinders
Units = cylinders of * = bytes
Sector size (logical/physical): bytes / bytes
I/O size (minimum/optimal): bytes / bytes
Disk identifier: 0x00000000 [root@zendlinux ~]# fdisk -l /dev/sda Disk /dev/sda: 17.2 GB, bytes
heads, sectors/track, cylinders
Units = cylinders of * = bytes
Sector size (logical/physical): bytes / bytes
I/O size (minimum/optimal): bytes / bytes
Disk identifier: 0x000dc501 Device Boot Start End Blocks Id System
/dev/sda1 * Linux
Partition does not end on cylinder boundary.
/dev/sda2 8e Linux LVM
/dev/sda4 8e Linux LVM
调整 LVM 大小先看看当前 Volume Group：
[root@zendlinux ~]# vgdisplay
--- Volume group ---
VG Name vg_zendlinux
System ID
Format lvm2
Metadata Areas
Metadata Sequence No
VG Access read/write
VG Status resizable
MAX LV
Cur LV
Open LV
Max PV
Cur PV
Act PV
VG Size 7.51 GiB
PE Size 4.00 MiB
Total PE
Alloc PE / Size / 7.51 GiB
Free PE / Size /
VG UUID Ou41cE-HyIM-IrsE-Ga3W-Tmmn-l5RX-sw58Zz
名称为 vg_zendlinux，可调整大小（resizable），当前大小为7.51 GB。
活动的 LVM 卷有
[root@zendlinux ~]# lvscan
ACTIVE '/dev/vg_zendlinux/lv_root' [6.71 GiB] inherit
ACTIVE '/dev/vg_zendlinux/lv_swap' [816.00 MiB] inherit
先将分配过来的新磁盘空间创建为一个新的物理卷
[root@zendlinux ~]# pvcreate /dev/sda4
dev_is_mpath: failed to get device for :
Physical volume "/dev/sda4" successfully created
然后使用新的物理卷来扩展 LVM 的vg_zendlinux
[root@zendlinux ~]# vgextend vg_zendlinux /dev/sda4
Volume group "vg_zendlinux" successfully extended
然后扩展 LVM 的逻辑卷 vg_zendlinux/lv_root
[root@zendlinux ~]# lvextend /dev/vg_zendlinux/lv_root /dev/sda4
Extending logical volume lv_root to 14.70 GiB
Logical volume lv_root successfully resized
最后，调整逻辑卷文件系统的大小
[root@zendlinux ~]# resize2fs /dev/vg_zendlinux/lv_root
resize2fs 1.41. (-May-)
Filesystem at /dev/vg_zendlinux/lv_root is mounted on /; on-line resizing required
old desc_blocks = , new_desc_blocks =
Performing an on-line resize of /dev/vg_zendlinux/lv_root to (4k) blocks.
The filesystem on /dev/vg_zendlinux/lv_root is now blocks long.
完成。看看效果：
[root@zendlinux ~]# lvscan
ACTIVE '/dev/vg_zendlinux/lv_root' [14.70 GiB] inherit
ACTIVE '/dev/vg_zendlinux/lv_swap' [816.00 MiB] inherit
[root@zendlinux ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_zendlinux-lv_root 15G .8G .9G % /
tmpfs 499M 499M % /dev/shm
/dev/sda1 477M 51M 401M % /boot
workspace 22G .4G 16G % /mnt/www