#lsvg 查看当前有哪些vg
rootvg
vgdb02
vgdb01
datavg
#lslv maindb_index 查看maindb_index这个lv 位于哪个vg上，新的lv也要与之相同。
LOGICAL VOLUME:     maindb_index           VOLUME GROUP:   datavg
LV IDENTIFIER:      0002b4d70000d60000000113ce2042d4.2 PERMISSION:     read/writ
e
VG STATE:           active/complete        LV STATE:       opened/syncd
TYPE:               raw                    WRITE VERIFY:   off
MAX LPs:            512                    PP SIZE:        128 megabyte(s)
COPIES:             1                      SCHED POLICY:   parallel
LPs:                96                     PPs:            96
STALE PPs:          0                      BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    yes
INTRA-POLICY:       middle                 UPPER BOUND:    16
MOUNT POINT:        N/A                    LABEL:          None
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?:     NO
 
#lsvg datavg 查看datavg的pp值、剩余空间：
VOLUME GROUP:       datavg                   VG IDENTIFIER:  0002b4d70000d600000
00113ce2042d4
VG STATE:           active                   PP SIZE:        128 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      3198 (409344 megaby
tes)
MAX LVs:            256                      FREE PPs:       87 (11136 megabytes
)
LVs:                70                       USED PPs:       3111 (398208 megaby
tes)
OPEN LVs:           22                       QUORUM:         2
TOTAL PVs:          2                        VG DESCRIPTORS: 3
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         2                        AUTO ON:        no
MAX PPs per VG:     32512
MAX PPs per PV:     2032                     MAX PVs:        16
LTG size (Dynamic): 1024 kilobyte(s)         AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable
可以看出，这个vg里每个pp大小为128m，剩余87个pp，即剩余11G
#smitty hacmp ->System Management (C-SPOC)->HACMP Logical Volume Management-> Shared Logical Volumes->Add a

Shared Logical Volume，选择在哪个vg上创建，自动选择磁盘，创建lv,注意：
 Number of LOGICAL PARTITIONS里输入创建的pp数，例如创建5G的lv，则输入40（40*128=5120m）
lv名称里输入将创建的lv名称，如maindb_index2_5g
 
创建完成后，需要按esc+3回退到上层目录， Change a Shared Logical Volume，将这个lv的类型由jfs修改为raw
 
回车执行完成后按esc+0退出。
 
#cd /dev
#ls maindb_index2_5g
 ls rmaindb_index2_5g
即可查看到刚刚创建的lv名称.
# chown -R oracle:dba /dev/rmaindb_index2_10g 修改文件宿主
# chmod -R 644 /dev/rmaindb_index2_10g 修改文件权限
 
 [p55a1]#ls maindb_inde*
maindb_index     maindb_index2_5
[p55a1]#ls -l maindb_ind*
brw-rw----   1 root     system       48,  2 Feb 05 2010  maindb_index
brw-rw----   1 root     system       48, 70 Oct 12 14:58 maindb_index2_5
[p55a1]#ls -l rmaindb_ind*
crw-rw----   1 oracle   dba          48,  2 Oct 11 19:44 rmaindb_index
crw-rw----   1 root     system       48, 70 Oct 12 14:56 rmaindb_index2_5
[p55a1]#chown -R oracle:dba /dev/rmaindb_index2_5
[p55a1]#chmod -R 644 /dev/rmaindb_index2_5
[p55a1]#ls rmaindb_index2*
rmaindb_index2_5
[p55a1]#ls -l rmaindb_index2*
crw-r--r--   1 oracle   dba          48, 70 Oct 12 14:56 rmaindb_index2_5
[p55a1]#su - oracle
$ ORACLE_SID=maindb
$ export ORACLE_SID
$ sqlplus  /nolog
SQL*Plus: Release 9.2.0.4.0 - Production on Tue Oct 12 15:35:48 2010
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
SQL> conn /as sysdba;
Connected.
SQL> show instance_name;
SQL>alter tablespace INDX add datafile '/dev/rmaindb_index2_5' size 5000M autoextend off;
   表空间的大小要略小于裸设备

zhuanzai :http://blog.sina.com.cn/s/blog_4ce6566f0100mor2.html