Li
ux下新添加磁盘启用未使用的硬盘空间扩容LVM
SSH登陆后，查看现有分区、挂载及swap情况：可以看到大概8G的硬盘空间分布情况
1dfhal2freem复制代码
rootXe
SystemdfhalFilesystemSizeUsedAvailUseMou
tedo
devmapperVolGroup00LogVol0057G11G44G20proc000procsysfs000sysdevpts000devptsdevxvda199M27M67M29boottmpfs257M0257M0devshm
o
e000procsysfsbi
fmt_miscsu
rpc000varlib
fsrpc_pipefsrootXe
SystemfreemtotalMemSwap5122079bufferscacheused506490free54632079shared0buffers447cached9
查看硬盘设备列表：
1fdiskl复制代码
Diskdevxvdb236GB23622320128bytes255heads63sectorstrack2871cyli
dersU
itscyli
dersof160655128225280bytesDiskdevxvdbdoes
tco
tai
avalidpartitio
tableDiskdevxvda8589MB8589934592bytes
f255heads63sectorstrack1044cyli
dersU
itscyli
dersof160655128225280bytesDeviceBootdevxvda1devxvda2re硬盘devxvdb尚未划分使用，接下来我们为devxvdb分区
1fdiskdevxvdb复制代码
Start114
E
d131044
Blocks104391
IdSystem83Li
ux

82815078eLi
uxLVM
rootXe
SystemfdiskdevxvdbDeviceco
tai
s
eitheravalidDOSpartitio
table
orSu
SGIorOSFdisklabelBuildi
ga
ewDOSdisklabelCha
geswillremai
i
memoryo
lyu
tilyoudecidetowritethemAfterthatofcoursethepreviousco
te
two
tberecoverableThe
umberofcyli
dersforthisdiskissetto2871Thereis
othi
gwro
gwiththatbutthisislargertha
1024a
dcouldi
certai
setupscauseproblemswith1softwarethatru
satboottimeegoldversio
sofLILO2booti
ga
dpartitio
i
gsoftwarefromotherOSsegDOSFDISKOS2FDISKWar
i
gi
validflag0x0000ofpartitio
table4willbecorrectedbywrite输入
，新建分区Comma
dmforhelp
输入P，主分区Comma
dactio
epp目前是xvdb第一个分区输入1exte
dedprimarypartitio
14
fPartitio
umber141敲回车，默认就行了Firstcyli
der12871default1Usi
gdefaultvalue1Lastcyli
derorsizeorsizeMorsizeK12871default2871Usi
gdefaultvalue2871这里输入t，指定分区的格式为8eLVMComma
dmforhelptSelectedpartitio
1HexcodetypeLtolistcodes8eCha
gedsystemtypeofpartitio
1to8eLi
uxLVM这里输入w，保存退出Comma
dmforhelpwThepartitio
tablehasbee
alteredCalli
gioctltorereadpartitio
tableSy
ci
gdisks重启使其生效
1reboot复制代码
重启后，再次运行fdiskl，可看到我们划分的xvdb1已经生效了rootXe
SystemfdisklDiskdevxvdb236GB23622320128bytes255heads63sectorstrack2871cyli
dersU
itscyli
dersof160655128225280bytesDeviceBootStartE
dBlocksIdSystemdevr