1查看磁盘信息：
rootlgce
tosdfh
FilesystemSizeUsedAvailUseMou
tedo
devmappervg_lgce
toslv_root
16G98G54G65
tmpfs948M72K948M1devshm
devsda1485M61M399M14boot
rootlgce
tosfdiskl
Diskdevsda215GB21474836480bytes
255heads63sectorstrack2610cyli
ders
U
itscyli
dersof160655128225280bytes
Sectorsizelogicalphysical512bytes512bytes
IOsizemi
imumoptimal512bytes512bytes
Diskide
tifier0x000402bd
DeviceBootStartE
dBlocksIdSystem
devsda116451200083Li
ux
Partitio
1does
ote
do
cyli
derbou
dary
devsda2642611204584968eLi
uxLVM
Diskdevsdb322GB32212254720bytes
255heads63sectorstrack3916cyli
ders
U
itscyli
dersof160655128225280bytes
Sectorsizelogicalphysical512bytes512bytes
IOsizemi
imumoptimal512bytes512bytes
Diskide
tifier0x00000000

Diskdevmappervg_lgce
toslv_root167GB166bytes
255heads63sectorstrack2028cyli
ders
U
itscyli
dersof160655128225280bytes
Sectorsizelogicalphysical512bytes512bytes
IOsizemi
imumoptimal512bytes512bytes
Diskide
tifier0x00000000

Diskdevmappervg_lgce
toslv_swap4261MB4261412864bytes
255heads63sectorstrack518cyli
ders
U
itscyli
dersof160655128225280bytes
Sectorsizelogicalphysical512bytes512bytes
IOsizemi
imumoptimal512bytes512bytes
Diskide
tifier0x00000000
2给devsdb添加分区devsdb1
21fdiskdevsdb
tmt查看帮助
t
t添加新分区
ttt修改分区类型为：8eLi
uxLVM
tpt查看分区
twt写入分区表并退出
tqt不保存分区表并退出
3扩展逻辑卷devmappervg_lgce
toslv_root的大小
31输入lvm，进入LVM管理器此步骤可省略，直接进行下面的操作，效果完全一样
32将分区转换为物理卷，此步骤可省略当将分区直接添加到卷组时，LVM会自动将分区转换为物理卷组。这里跳过这一步
tlvmpvcreatedevsdb1
tPhysicalvolume