[root@kaola ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_kaola-lv_root 6.5G 6.2G 32M 100% /
tmpfs 939M 76K 939M 1% /dev/shm
/dev/sda1 477M 59M 393M 14% /boot

1. 復制vmdk到vdi

   由於創建VM時選擇的磁盤格式是vmdk，先復制磁盤為vdi格式：

   C:\Program Files\Oracle\VirtualBox>
   

   
   

   vboxmanage clonehd "kaola.vmdk" "new-kaola.vdi" --format vdi
   

   修改磁盤為 20G：

   vboxmanage modifyhd "new-kaola.vdi" --resize 20480

   查看磁盤信息：
   

   [root@kaola ~]# fdisk -l
   
   Disk /dev/sda: 21.5 GB, 21474836480 bytes
   255 heads, 63 sectors/track, 2610 cylinders
   Units = cylinders of 16065 * 512 = 8225280 bytes
   Sector size (logical/physical): 512 bytes / 512 bytes
   I/O size (minimum/optimal): 512 bytes / 512 bytes
   Disk identifier: 0x000490ac
   
   Device Boot Start End Blocks Id System
   

   /dev/sda1 * 1 64 512000 83 Linux
   Partition 1 does not end on cylinder boundary.
   /dev/sda2 64 2611 20458496 8e Linux LVM
   

   
   

2. 下載gparted iso文件，引導vm啟動後調整sda2分區；

   調整後：
   

   [root@kaola ~]# fdisk -l
   
   Disk /dev/sda: 21.5 GB, 21474836480 bytes
   255 heads, 63 sectors/track, 2610 cylinders
   Units = cylinders of 16065 * 512 = 8225280 bytes
   Sector size (logical/physical): 512 bytes / 512 bytes
   I/O size (minimum/optimal): 512 bytes / 512 bytes
   Disk identifier: 0x000490ac
   
   Device Boot Start End Blocks Id System
   /dev/sda1 * 1 64 512000 83 Linux
   Partition 1 does not end on cylinder boundary.
   /dev/sda2 64 2611 20458496 8e Linux LVM

   
   

3. 查看PV VG信息

   [root@kaola mapper]# pvdisplay
   --- Physical volume ---
   PV Name /dev/sda2
   VG Name vg_kaola
   PV Size 19.51 GiB / not usable 2.00 MiB
   Allocatable yes
   PE Size 4.00 MiB
   Total PE 4994
   Free PE 3072
   Allocated PE 1922
   PV UUID TMCfp1-wTiv-efkN-DfJ4-ZHnO-IGa0-iulNOu
   
   [root@kaola mapper]# vgdisplay
   --- Volume group ---
   VG Name vg_kaola
   System ID
   Format lvm2
   Metadata Areas 1
   Metadata Sequence No 5
   VG Access read/write
   VG Status resizable
   MAX LV 0
   Cur LV 2
   Open LV 2
   Max PV 0
   Cur PV 1
   Act PV 1
   VG Size 19.51 GiB
   PE Size 4.00 MiB
   Total PE 4994
   Alloc PE / Size 1922 / 7.51 GiB
   Free PE / Size 3072 / 12.00 GiB
   VG UUID JGyRf4-drnG-n5gs-M3No-LCBC-MEHz-OcewI1

   
   

4. 調整LV大小

   Free PE 3072

   [root@kaola mapper]# lvextend -l +3072 /dev/mapper/vg_kaola-lv_root
   Extending logical volume lv_root to 18.71 GiB
   Logical volume lv_root successfully resized

   
   

5. 調整文件系統大小

   [root@kaola mapper]# resize2fs /dev/mapper/vg_kaola-lv_root
   resize2fs 1.41.12 (17-May-2010)
   Filesystem at /dev/mapper/vg_kaola-lv_root is mounted on /; on-line resizing required
   old desc_blocks = 1, new_desc_blocks = 2
   Performing an on-line resize of /dev/mapper/vg_kaola-lv_root to 4904960 (4k) blocks.
   The filesystem on /dev/mapper/vg_kaola-lv_root is now 4904960 blocks long.

   
   

6. 調整後，現在已用為36%：

   [root@kaola mapper]# df -h
   Filesystem Size Used Avail Use% Mounted on
   /dev/mapper/vg_kaola-lv_root 19G 6.2G 12G 36% /
   tmpfs 939M 224K 939M 1% /dev/shm
   /dev/sda1 477M 59M 393M 14% /boot
   cm_processes 939M 0 939M 0% /var/run/cloudera-scm-agent/process

   
   

記錄一次Oracle VirtualBox 下 Centos 6.5 VM 磁盤擴容