VM下LINUX完美增加硬盘空间（LVM）(2)

  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               VolGroup00
  PV Size               3.84 GB / not usable 25.96 MB
  Allocatable           yes
  PE Size (KByte)       32768
  Total PE              122
  Free PE               122
  Allocated PE          0
  PV UUID               mHKWzk-mQ1o-jkQB-0DZC-PVqW-w2R9-14y19G
把sda3变为LVM的虚拟磁盘（增加容量的关键）
vgextend /dev/VolGroup00/LogVol102 /dev/sda3
第三步 增加 /目录容量
lvm> lvextend -L +3.8G /dev/VolGroup00/LogVol00
  Rounding up size to full physical extent 3.81 GB
  Extending logical volume LogVol00 to 9.69 GB
  Logical volume LogVol00 successfully resized
##还要重新一下识别磁盘容量
# resize2fs /dev/VolGroup00/LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/VolGroup00/LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/VolGroup00/LogVol00 to 2539520 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 2539520 blocks long.
查看最终结果：
lvm> lvdisplay
  --- Logical volume ---
  LV Name                /dev/VolGroup00/LogVol00
  VG Name                VolGroup00
  LV UUID                r9eG4x-njBD-z2HT-lmL2-2l81-P3XV-KVd0e4
  LV Write Access        read/write
  LV Status              available
  # open                 1