10GORACLERAC搭建实战之LINUXLVM划分-乐山大橙子建站

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10GORACLERAC搭建实战之LINUXLVM划分

LVM划分

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1.划分说明

服务器对存储设备的访问采用多路径技术（Linux Device Mapper Multipathing），多路径设备配置完毕后，会在/dev/mapper/ 发现mpthX的多路径设备，可以使用lvcreate将其中一个设备划分为一个物理卷。

本次扩容的日立裸存储设备共有900G*10空间，做RAID1+0后，实际可用存储为约为3T分6个pv （一个pv 500G），分6个卷组--oravg01-06，一个卷组下分一个PV。

Oracle各主要数据文件分配大小：

temp:80G undo:60G SAP:819G SMS:999G

BCA_YW:100G BCA_GW:100G APP:200G indx:200G

备注：划分时发现，对一台服务器划分到LV后，另一台也能识别相同的LV，但是VG处于不活动状态，需要进行激活。

2.创建PV

pvcreate /dev/mapper/mpath2

pvcreate/dev/mapper/mpath3

pvcreate/dev/mapper/mpath4

pvcreate/dev/mapper/mpath5

pvcreate/dev/mapper/mpath6

pvcreate/dev/mapper/mpath7

查看PV属性

[root@rac1 ~]#pvdisplay

"/dev/mpath/mpath2" is a newphysical volume of "500.00 GB"

--- NEW Physical volume ---

PV Name /dev/mpath/mpath2

VG Name

PV Size 500.00 GB

Allocatable NO

PE Size (KByte) 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID TtAWwc-5hZF-0ZLt-TVuP-Jn9f-n2FQ-oaLCDh

"/dev/mpath/mpath3" is a newphysical volume of "500.00 GB"

--- NEW Physical volume ---

PV Name /dev/mpath/mpath3

VG Name

PV Size 500.00 GB

Allocatable NO

PE Size (KByte) 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID GiUA3r-cHfQ-LF0m-FBQt-K0yK-0jbH-GayMhX

"/dev/mpath/mpath4" is a newphysical volume of "500.00 GB"

--- NEW Physical volume ---

PV Name /dev/mpath/mpath4

VG Name

PV Size 500.00 GB

Allocatable NO

PE Size (KByte) 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID HjaH7y-Zoy9-xl1N-m2QU-JeUI-QyzN-ZWutNq

"/dev/mpath/mpath5" is a newphysical volume of "500.00 GB"

--- NEW Physical volume ---

PV Name /dev/mpath/mpath5

VG Name

PV Size 500.00 GB

Allocatable NO

PE Size (KByte) 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID zJbntF-iZae-BTn6-fleK-PGKn-jvIr-GHLT0D

"/dev/mpath/mpath6" is a newphysical volume of "500.00 GB"

--- NEW Physical volume ---

PV Name /dev/mpath/mpath6

VG Name

PV Size 500.00 GB

Allocatable NO

PE Size (KByte) 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID KAt3j4-NnAP-C018-BUM1-Xfhv-UYY6-Zdy3PD

"/dev/mpath/mpath7" is a newphysical volume of "500.00 GB"

--- NEW Physical volume ---

PV Name /dev/mpath/mpath7

VG Name

PV Size 500.00 GB

Allocatable NO

PE Size (KByte) 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID q1I884-vCgj-EMb8-FwI3-1Oqn-CuGo-wjF7nW

3. 创建VG

创建6个VG，一个VG下分一个PV，默认PE=4M，一个VG 500G

[root@rac1 ~]# vgcreate oravg01 /dev/mpath/mpath2

Volume group"oravg01" successfully created

[root@rac1 ~]# vgcreate oravg02 /dev/mpath/mpath3

Volume group"oravg02" successfully created

[root@rac1 ~]# vgcreate oravg03 /dev/mpath/mpath4

Volume group"oravg03" successfully created

[root@rac1 ~]# vgcreate oravg04 /dev/mpath/mpath5

Volume group"oravg04" successfully created

[root@rac1 ~]# vgcreate oravg05 /dev/mpath/mpath6

Volume group"oravg05" successfully created

[root@rac1 ~]# vgcreate oravg06 /dev/mpath/mpath7

Volume group"oravg06" successfully created

查看VG

[root@rac1 ~]# vgdisplay

--- Volume group ---

VG Name oravg06

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 1

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 500.00 GB

PE Size 4.00 MB

Total PE 127999

Alloc PE / Size 0 / 0

Free PE / Size 127999 / 500.00 GB

VG UUID wevGwC-kmhe-3ho9-4CRk-GVnt-hOvE-2qq93g

--- Volume group ---

VG Name oravg05

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 1

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 500.00 GB

PE Size 4.00 MB

Total PE 127999

Alloc PE / Size 0 / 0

Free PE / Size 127999 / 500.00 GB

VG UUID P6pEjs-SHzZ-Rxql-XIwR-uOff-euw5-kPJpQg

--- Volume group ---

VG Name oravg04

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 1

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 500.00 GB

PE Size 4.00 MB

Total PE 127999

Alloc PE / Size 0 / 0

Free PE / Size 127999 / 500.00 GB

VG UUID K9yT9I-21Wg-48Ye-k1TY-ge3F-354N-EGYuPc

--- Volume group ---

VG Name oravg03

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 1

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 500.00 GB

PE Size 4.00 MB

Total PE 127999

Alloc PE / Size 0 / 0

Free PE / Size 127999 / 500.00 GB

VG UUID B4Nmcz-CEQK-yIL7-tn9j-SB03-e0GU-WUSlic

--- Volume group ---

VG Name oravg02

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 1

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 500.00 GB

PE Size 4.00 MB

Total PE 127999

Alloc PE / Size 0 / 0

Free PE / Size 127999 / 500.00 GB

VG UUID 3ydc98-DgkI-P8F5-HlGd-B2xO-mX0o-eE3zsn

--- Volume group ---

VG Name oravg01

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 1

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 500.00 GB

PE Size 4.00 MB

Total PE 127999

Alloc PE / Size 0 / 0

Free PE / Size 127999 / 500.00 GB

VG UUID Ei6ZDe-29bP-XARY-qpCe-Qsve-y9Py-YtaKUw

4. 创建LV

注：这里创建lv大小时，最好分配得比预先设计的大一些

依次创建LV（省略）

[root@rac1 ~]# lvcreate -L 512M oravg01

Logical volume "lvol0" created

扫描系统存在的LV

[root@rac1 ~]# lvscan

ACTIVE '/dev/oravg01/lvol0' [512.00 MB]inherit

查看VG属性

[root@rac1 ~]# vgdisplay -P oravg01

Partial mode. Incomplete logical volumes will be processed.

---Volume group ---

VGName oravg01

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 39

VGAccess read/write

VGStatus resizable

MAXLV 0

CurLV 38

Open LV 0

MaxPV 0

CurPV 1

ActPV 1

VGSize 500.00 GB

PESize 4.00 MB

Total PE 127999

AllocPE / Size 121216 / 473.50 GB

Free PE / Size 6783 / 26.50 GB

VGUUID Ei6ZDe-29bP-XARY-qpCe-Qsve-y9Py-YtaKUw

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