一台服务器，普通/dev/sda1/2(硬盘一) 同步数据到 lvm_member(硬盘二)
rsync两硬盘数据同步：
From: http://hi.baidu.com/williwill/item/7a36fdd92340b2ee55347f13
系统启动到request_module: runaway loop modprobe binfmt-464c挂起
利用U盘系统，挂载硬盘出现：mount: unknown filesystem type 'LVM2_member'
解决办法：
需要安装 lvm2: yum install lvm2
然后按一下步骤：
1、查看物理卷：pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 VolGroup00 lvm2 a- 279.22G 32.00M
2、查看卷组：vgs
VG #PV #LV #SN Attr VSize VFree
VolGroup00 1 4 0 wz--n- 279.22G 32.00M
3、查看逻辑卷：lvdisplay
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol03
VG Name VolGroup00
LV UUID YhG8Fu-ZGPk-qt8D-AxgC-DzOU-dg1F-z71feI
LV Write Access read/write
LV Status unenable
# open 1
LV Size 245.97 GB
Current LE 7871
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
4、如未激活，需要激活逻辑卷：vgchange -ay /dev/VolGroup00
LV Status available
5、挂载逻辑卷：mount /dev/VolGroup00/LogVol03 /home/lvm