离线系统扩容步骤
案例场景：
在IBM-AIX系统上，离线系统空间占用100%，需要扩容；因本地磁盘满了，外挂于磁盘阵列上，无法直接通过本地来扩充磁盘容量。
解决步骤：
离线系统lxexpdata扩容步骤：
1. v7000 划卷并映射给vio_server: byp750a_vio
2. vio_server（oem_setup_env环境）扫盘：cfgmgr -v
3. vio_server（oem_setup_env环境）确认扫出的盘与阵列卷对应关系：pcmpath query device
DEV#: 7 DEVICE NAME: hdisk7 TYPE: 2145 ALGORITHM: Load Balance
SERIAL: 6005076802810C001000000000000007
==========================================================================
Path# Adapter/Path Name State Mode Select Errors
0 fscsi0/path0 CLOSE NORMAL 0 0
1 fscsi0/path1 CLOSE NORMAL 0 0
2 fscsi0/path2 CLOSE NORMAL 0 0
3 fscsi0/path3 CLOSE NORMAL 0 0
4 fscsi2/path4 CLOSE NORMAL 0 0
5 fscsi2/path5 CLOSE NORMAL 0 0
6 fscsi2/path6 CLOSE NORMAL 0 0
7 fscsi2/path7 CLOSE NORMAL 0 0
4. vio_server（oem_setup_env环境）修改hdisk参数：
# chdev -l hdisk7 -a pv=yes
# chdev -l hdisk7 -a rw_timeout=30
5. vio_server，确认主机映射关系：lsmap -all
$ lsmap -all
SVSA Physloc Client Partition ID
--------------- -------------------------------------------- ------------------
vhost0 U8408.E8D.06ABB1T-V2-C111 0x00000003
VTD lx_datavg_1
Status Available
LUN 0x8100000000000000
Backing device hdisk3
Physloc U78C5.001.DQD02G1-P2-C2-T1-W500507680215E8DB-L0
Mirrored false
VTD lx_datavg_2
Status Available
LUN 0x8200000000000000
Backing device hdisk5
Physloc U78C5.001.DQD02G1-P2-C2-T1-W500507680215E8DB-L2000000000000
Mirrored false
VTD lx_datavg_3
Status Available
LUN 0x8300000000000000
Backing device hdisk6
Physloc U78C5.001.DQD02G1-P2-C2-T1-W500507680215E8DB-L3000000000000
Mirrored false
VTD lx_datavg_4
Status Available
LUN 0x8400000000000000
Backing device hdisk7
Physloc U78C5.001.DQD02G1-P2-C2-T1-W500507680215E8DB-L4000000000000
Mirrored false
SVSA Physloc Client Partition ID
--------------- -------------------------------------------- ------------------
vhost1 U8408.E8D.06ABB1T-V2-C112 0x00000003
VTD lx_rootvg_1
Status Available
LUN 0x8100000000000000
Backing device hdisk4
Physloc U78C5.001.DQD02G1-P2-C2-T1-W500507680215E8DB-L1000000000000
Mirrored false
SVSA Physloc Client Partition ID
--------------- -------------------------------------------- ------------------
vhost2 U8408.E8D.06ABB1T-V2-C121 0x00000000
VTD NO VIRTUAL TARGET DEVICE FOUND
SVSA Physloc Client Partition ID
--------------- -------------------------------------------- ------------------
vhost3 U8408.E8D.06ABB1T-V2-C122 0x00000000
VTD NO VIRTUAL TARGET DEVICE FOUND
$ mkvdev -vdev hdisk7 -vadapter vhost0 -dev lx_datavg_4
lx_datavg_4 Available
6. 微分区中扫描分配的盘:cfgmgr -v
7.微分区中将盘加入expvg： extendvg expvg hdisk4
8.扩文件系统：chfs -a size=1990G /lxexpdata