怎样在aix 创建vg

shell>smitty mkvg:

Move cursor to desired item and press Enter.

Add an Original Volume Group

Add a Big Volume Group

Add a Scalable Volume Group

选择第一项即可，第2和第3项都是在增加了vg容量作出了调整，但是本文是测试，不需要多大的空间，也没有那么多的pv供选择。

默认情况下是第一项，加车即可

回车后

Add an Original Volume Group

Type or select values in entry fields.

Press Enter AFTER making all desired changes.

[Entry Fields]

VOLUME GROUP name [oradata]

Physical partition SIZE in megabytes8 +

* PHYSICAL VOLUME names [hdisk2]+

Force the creation of a volume group? no +

Activate volume group AUTOMATICALLY yes+

at system restart?

Volume Group MAJOR NUMBER [] +#

Create VG Concurrent Capable? no +

按两次回车确认

Command: failedstdout: yes stderr: no

Before command completion, additional instructions may appear below.

0516-1208 /usr/sbin/mkvg: Warning, The Physical Partition Size of 8 requires the

creation of 35762 partitions for hdisk4. The system limitation is 16256

physical partitions per disk at a factor value of 16. Specify a larger

Physical Partition Size or a larger factor value in order create a

volume group on this disk.

0516-862 /usr/sbin/mkvg: Unable to create volume group.

提示要加大pp的大小，用F3退回

因为普通vg要求 多只能含有16256个pp，因为目前的磁盘空间是35762*8/1024约为280G

从pv上看大小，大致也可以验证这一点：

[tydic91:root:/]#i=$((35762*8))

[tydic91:root:/]#echo $i

286096

[tydic91:root:/]#lspv hdisk4

PHYSICAL VOLUME:hdisk4 VOLUME GROUP: oradata

PV IDENTIFIER: 005f555d8f66431e VG IDENTIFIER 005f555d00004c000000012ebf74ac0f

PV STATE: active

STALE PARTITIONS: 0ALLOCATABLE: yes

PP SIZE:512 megabyte(s) LOGICAL VOLUMES: 0

TOTAL PPs: 558 (285696 megabytes) VG DESCRIPTORS: 2

FREE PPs: 558 (285696 megabytes) HOT SPARE:no

USED PPs: 0 (0 megabytes) MAX REQUEST: 256 kilobytes

FREE DISTRIBUTION: 112..112..111..111..112

USED DISTRIBUTION: 00..00..00..00..00

hdisk4为280G左右

16<285696/16256=17<32

因此，其最小大小应该为32M

测试下：

1）删除VG组

[tydic91:root:/]#lspv

hdisk0 005f555d8ece14earootvg active

hdisk1 005f555d7afe4fe8rootvg active

hdisk2 005f555d8f6640f8None

hdisk3 005f555d8f66420aNone

hdisk4 005f555d8f66431eoradata active

[tydic91:root:/]#varyoffvg oradata

[tydic91:root:/]#lspv

hdisk0 005f555d8ece14earootvg active

hdisk1 005f555d7afe4fe8rootvg active

hdisk2 005f555d8f6640f8None

hdisk3 005f555d8f66420aNone

hdisk4 005f555d8f66431eoradata

[tydic91:root:/]#exportvg oradata

[tydic91:root:/]#lspv

hdisk0 005f555d8ece14earootvg active

hdisk1 005f555d7afe4fe8rootvg active

hdisk2 005f555d8f6640f8None

hdisk3 005f555d8f66420aNone

hdisk4 005f555d8f66431eNone

2）以32M创建VG

再以32M创建

VOLUME GROUP name [oradata]

Physical partition SIZE in megabytes32 +

* PHYSICAL VOLUME names [hdisk2]+

Force the creation of a volume group? no +

Activate volume group AUTOMATICALLY yes+

at system restart?

Volume Group MAJOR NUMBER [] +#

Create VG Concurrent Capable? no +

Command: OKstdout: yes stderr: no

Before command completion, additional instructions may appear below.

oradata

果然，32M不存在这个问题

3)最后重复第2步，将卷组名设置为oradatavg，PP大小为64M

VOLUME GROUP name [oradata]

Physical partition SIZE in megabytes64 +

* PHYSICAL VOLUME names [hdisk2]+

Force the creation of a volume group? yes +

Activate volume group AUTOMATICALLY yes+

at system restart?

Volume Group MAJOR NUMBER [] +#

Create VG Concurrent Capable? no +

Command: OKstdout: yes stderr: no

Before command completion, additional instructions may appear below.

oradatavg

[tydic91:root:/]#lspv

hdisk0 005f555d8ece14earootvg active

hdisk1 005f555d7afe4fe8rootvg active

hdisk2 005f555d8f6640f8oradatavgactive

hdisk3 005f555d8f66420aNone

hdisk4 005f555d8f66431eNone

aix系统创建vg失败是由于hdisk3进行了RAID的配置，并且和dbvg中的RAID磁盘block块的大小不一致所导致。

AIX是IBM基于AT&TUnixSystemV开发的一套类UNIX *** 作系统，运行在IBM专有的Power系列芯片设计的小型机硬件系统之上。