oracle rac onenode在线共享存储迁移

检查待添加磁盘

[root@rac-test01-db ~]# fdisk -l
...
Disk /dev/sdh: 5368 MB, 5368709120 bytes, 10485760 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/sdi: 5368 MB, 5368709120 bytes, 10485760 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
...

如果识别不到可以执行以下命令手动扫描
[root@rac-test01-db scsi_host]# cd /sys/class/scsi_host
[root@rac-test01-db scsi_host]# ls
host0 host1 host10 host2 host3 host4 host5 host6 host7 host8 host9

有几个host文件执行几次
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
...
echo "- - -" > /sys/class/scsi_host/host10/scan

格式化共享存储
[root@rac-test01-db ~]# fdisk /dev/sdh
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x649675ed.

Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p):
Using default response p

Partition number (1-4, default 1): First sector (2048-10485759, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-10485759, default 10485759): +4G
Partition 1 of type Linux and of size 4 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

[root@rac-test01-db ~]# fdisk /dev/sdi
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x08dc4fb1.

Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-10485759, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-10485759, default 10485759): +4G
Partition 1 of type Linux and of size 4 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

创建ASM磁盘
[root@rac-test01-db ~]# oracleasm createdisk TEST01 /dev/sdh1
Writing disk header: done
Instantiating disk: done
[root@rac-test01-db ~]# oracleasm createdisk TEST02 /dev/sdi1
Writing disk header: done
Instantiating disk: done

扫描ASM磁盘
[root@rac-test01-db ~]# oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...

[root@rac-test01-db ~]# oracleasm listdisks
DATA01
FRA01
FRA02
OCRVD01
OCRVD02
OCRVD03
TEST01
TEST02

创建TEST磁盘组，验证新建共享存储可用
[root@rac-test01-db ~]# su - grid
Last login: Fri Dec 29 09:58:03 CST 2017 on pts/1
[grid@rac-test01-db ~]$ sqlplus / as sysasm

SQL*Plus: Release 12.1.0.2.0 Production on Wed Jan 3 16:27:54 2018

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options

SQL> create diskgroup TEST external redundancy
disk 'ORCL:TEST01','ORCL:TEST02';

Diskgroup created.