本人电脑有Windows XP和CentOS两个系统，因学习需要装了Ubuntu 10.04，不料发现不能加载lvm，故查阅资料，借鉴别人，整理如下：
1.首先使用vgscan 扫描 lvm 结果如下
zhq@zhq:/$ sudo vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
2.通过 vgdisplay VolGroup00 查看 lvm 的 VG UUID
zhq@zhq:/$ sudo vgdisplay VolGroup00
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 19.62 GiB
PE Size 32.00 MiB
Total PE 628
Alloc PE / Size 628 / 19.62 GiB
Free PE / Size 0 / 0
VG UUID xPw6Yb-1SYW-ayBT-TqOP-hF4i-w02x-vY0165
3.重命名（本人认为此步可省，可能是源于简洁吧，呵呵，没试，你可以试试，呵呵）
zhq@zhq:/$ sudo vgrename VolGroup00 /dev/vg0
Volume group "VolGroup00" successfully renamed to "vg0"
这个时候通过 vgdisplay 就可以看到 VG的信息了
zhq@zhq:/$ sudo vgdisplay
--- Volume group ---
VG Name vg0
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 19.62 GiB
PE Size 32.00 MiB
Total PE 628
Alloc PE / Size 628 / 19.62 GiB
Free PE / Size 0 / 0
VG UUID xPw6Yb-1SYW-ayBT-TqOP-hF4i-w02x-vY0165
4.激活VG
VG重命名后，默认是非ACTIVE状态,我们要通过以下方式激活VG
zhq@zhq:/$ sudo lvscan
ACTIVE '/dev/vg0/LogVol00' [18.16 GiB] inherit
ACTIVE '/dev/vg0/LogVol01' [1.47 GiB] inherit
激活 VG
zhq@zhq:/$ sudo vgchange -ay /dev/vg0
2 logical volume(s) in volume group "vg0" now active
查看状态
zhq@zhq:/$ sudo lvscan
/LogVol00' [18.16 GiB] inherit
ACTIVE '/dev/vg0/LogVol01' [1.47 GiB] inherit
zhq@zhq:/$ sudo vgscan
Reading all physical volumes. This may take a while...
Found volume group "vg0" using metadata type lvm2
到此为止，可以在ubuntu下看见久违的centos了，不过／home下的用户进不去，实乃遗憾，说权限不够，改了权限也不行，期待高手指点。
挂载LVM问题解决