10GORACLERAC搭建实战之LINUXLVM划分-创新互联

 LVM划分

1. 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。

1. 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

1. 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

1. 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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