由于AIX系统空间不够需要增加硬盘，希望增加文件系统的空间，折腾了好几天怎么都不能扩展文件系统的空间，原来是把硬盘加错了卷组
首先，确定文件系统所在的LV
/dev/datalv 270.00 37.47 87% 24 1% /oradata
2.查看LV所在的卷组
# lslv datalv
LOGICAL VOLUME: datalv VOLUME GROUP: backupvg LV IDENTIFIER: 00c0711c00004c000000014321c777ce.1 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 10000 PP SIZE: 1024 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 270 PPs: 270
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 128
MOUNT POINT: /oradata LABEL: /oradata
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO
LOGICAL VOLUME: datalv VOLUME GROUP: backupvg LV IDENTIFIER: 00c0711c00004c000000014321c777ce.1 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 10000 PP SIZE: 1024 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 270 PPs: 270
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 128
MOUNT POINT: /oradata LABEL: /oradata
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO
3.把硬盘加入到相应的卷组中
# smit vg
选择Set Characteristics of a Volume GroupSet Characteristics of a Volume Group
选择Add a Physical Volume to a Volume Group---把硬盘增加到相应的卷组中
4.查看
# lsvg -p backupvg
backupvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk3 active 271 0 00..00..00..00..00
hdisk4 active 271 271 55..54..54..54..54
backupvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk3 active 271 0 00..00..00..00..00
hdisk4 active 271 271 55..54..54..54..54
5.增加文件系统的空间
# chfs -a size=+100G /oradata
Filesystem size changed to 775946240
Filesystem size changed to 775946240
6，确认
/dev/datalv 370.00 137.45 63% 24 1% /oradata
成功！