01 Creation with ASM Storage

References

Richmond Cluster (11)

Using Raw Logical Volumes on Linux .

Overview

BANKSTOWN is being built as the Data Guard standby node for the PENRITH cluster.

Configuration

Here are the configuration details for BANKSTOWN :

Name	Value
Host name	bankstown.yaocm.id.au
eth0 IP	10.1.1.244

Disk Configuration

As BANKSTOWN is a stand-alone node, I can use raw devices for the basis of the ASM disks. The reference procedure is in Richmond Cluster (11) from my OCM 10G build.

Partioning

The result of the partitioning of /dev/sdb is:

(parted) print                                                            

Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdb: 8590MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
 1      0.51kB  3681MB  3681MB  primary                    
 2      3681MB  8590MB  4909MB  primary                    

Raw Device Set Up

The raw devices were set up as follows:

[root@bankstown ~]# raw -qa
[root@bankstown ~]# vi /etc/sysconfig/rawdevices
[root@bankstown ~]# cat /etc/sysconfig/rawdevices
# raw device bindings
# format:    
#           
# example: /dev/raw/raw1 /dev/sda1
#          /dev/raw/raw2 8 5
/dev/raw/raw1 /dev/sdb1
/dev/raw/raw2 /dev/sdb2
[root@bankstown ~]# service rawdevices restart
Assigning devices: 
           /dev/raw/raw1  -->   /dev/sdb1
/dev/raw/raw1:  bound to major 8, minor 17
           /dev/raw/raw2  -->   /dev/sdb2
/dev/raw/raw2:  bound to major 8, minor 18
done
[root@bankstown ~]# ls -l /dev/raw
total 0
crw------- 1 root root 162, 1 Jan  9 05:13 raw1
crw------- 1 root root 162, 2 Jan  9 05:13 raw2
[root@bankstown ~]# chown asm:oinstall /dev/raw/raw[12]
[root@bankstown ~]# chmod 660 /dev/raw/raw[12]
[root@bankstown ~]# ls -l /dev/raw
total 0
crw-rw---- 1 asm oinstall 162, 1 Jan  9 05:13 raw1
crw-rw---- 1 asm oinstall 162, 2 Jan  9 05:13 raw2

ASM Disk Configuration

The disk discovery string is now:

asm_diskstring = /dev/raw

Used dbca to mount the following disks with external redundancy (a lie!):

DATA	/dev/raw/raw1
RECOVERY	/dev/raw/raw2

The result is:

[asm@bankstown ~]$ asmcmd lsdg
State    Type    Rebal  Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Name
MOUNTED  EXTERN  N         512   4096  1048576      3510     3460                0            3460              0  DATA/
MOUNTED  EXTERN  N         512   4096  1048576      4681     4631                0            4631              0  RECOVERY/