一、创建PV
[root@rac1 ~]# pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created
二、扩成VG
[root@rac1 ~]# vgextend VolGroup00 /dev/sda3
/dev/hdc: open failed: Read-only file system
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Volume group "VolGroup00" successfully extended
三、关闭SWAP
[root@rac1 ~]# swapoff -v /dev/VolGroup00/LogVol00
swapoff on /dev/VolGroup00/LogVol00
[root@rac1 ~]# free -m
total used free shared buffers cached
Mem: 1217 198 1018 0 12 147
-/+ buffers/cache: 38 1179
Swap: 0 0 0
四、扩充SWAP所在的LV
[root@rac1 ~]# lvm lvresize /dev/VolGroup00/LogVol00 -L +256M
/dev/hdc: open failed: Read-only file system
Extending logical volume LogVol00 to 1.25 GB
Logical volume LogVol00 successfully resized
五、扩成SWAP
[root@rac1 ~]#
[root@rac1 ~]# mkswap /dev/VolGroup00/LogVol00
Setting up swapspace version 1, size = 1342173 kB
六、启用SWAP
[root@rac1 ~]# swapon -va
swapon on /dev/VolGroup00/LogVol00
七、查看结果
[root@rac1 ~]# free -m
total used free shared buffers cached
Mem: 1217 199 1017 0 12 148
-/+ buffers/cache: 38 1178
Swap: 1279 0 1279