vi lvm_extend.sh
#!/bin/bash
#jk409 2014-7-30
#eg.
#lvm_extend.sh /dev/sdb 9.9
#扩展10g
yp=$1
Size=$2
fdisk ${yp} << EOF
n
p
1
t
8e
wq
EOF
partprobe
mkfs.ext4 ${yp}1
pvcreate ${yp}1
vgextend VolGroup ${yp}1
lvextend -L +${Size}G /dev/VolGroup/lv_root
resize2fs /dev/VolGroup/lv_root
#vgreduce --removemissing VolGroup
原文：http://my.oschina.net/jk409/blog/296572