Anlegen von ASM Disks z.B. auf einem NFS Share

Anlegen von Flat ASM Disken

 Dieses Beispiel ist nicht für Produktive Installation gedacht und 
dient nur als Unterstützung um ASM Installationen unter Test 
Konditionen zu testen.

Erstellen von Text Datein mit „dd“

DD=/u01/disk 
mkdir $DD 
chown grid:dba $DD 
su - grid  
dd if=/dev/zero of=$DD/_file_disk1 bs=1M count=1000 
dd if=/dev/zero of=$DD/_file_disk2 bs=1M count=1000 
dd if=/dev/zero of=$DD/_file_disk3 bs=1M count=1000 
dd if=/dev/zero of=$DD/_file_disk4 bs=1M count=1000 
dd if=/dev/zero of=$DD/_file_disk5 bs=1M count=1000 
dd if=/dev/zero of=$DD/_file_disk6 bs=1M count=35000 
dd if=/dev/zero of=$DD/_file_disk7 bs=1M count=35000

Mittels losetup werden unsere Text Datein mit einem „loop“ Device zusammengeführt

 losetup /dev/loop1 /u01/disk/_file_disk1
 losetup /dev/loop2 /u01/disk/_file_disk2
 losetup /dev/loop3 /u01/disk/_file_disk3
 losetup /dev/loop4 /u01/disk/_file_disk4
 losetup /dev/loop5 /u01/disk/_file_disk5
 losetup /dev/loop6 /u01/disk/_file_disk6
 losetup /dev/loop7 /u01/disk/_file_disk7

Anlegen der RAW Devices (optional)

raw /dev/raw/raw1 /dev/loop1 /dev/raw/raw1:  bound to major 7, minor 1 
raw /dev/raw/raw2 /dev/loop2 /dev/raw/raw2:  bound to major 7, minor 2 
raw /dev/raw/raw3 /dev/loop3 /dev/raw/raw3:  bound to major 7, minor 3 
raw /dev/raw/raw4 /dev/loop4 /dev/raw/raw4:  bound to major 7, minor 4 
raw /dev/raw/raw5 /dev/loop5 /dev/raw/raw5:  bound to major 7, minor 5 
raw /dev/raw/raw6 /dev/loop6 /dev/raw/raw6:  bound to major 7, minor 6 
raw /dev/raw/raw7 /dev/loop7 /dev/raw/raw7:  bound to major 7, minor 7

Erstellen der ASM Devices

RAW Devices sind optinal. Man kann auch gleich auf die loop Devices losgehen.

/etc/init.d/oracleasm configure Configuring the Oracle ASM library driver.  
This will configure the on-boot properties of the Oracle ASM library driver.  
The following questions will determine whether the driver is loaded on boot and what permissions it will have.  
The current values will be shown in brackets ('[]').  Hitting <ENTER> without typing an answer will keep that current value.  
Ctrl-C will abort.  
Default user to own the driver interface []: grid 
Default group to own the driver interface []: oinstall 
Start Oracle ASM library driver on boot (y/n) [n]: y 
Scan for Oracle ASM disks on boot (y/n) [y]: y 
Writing Oracle ASM library driver configuration: done 
Initializing the Oracle ASMLib driver:                     [  OK  ] 
Scanning the system for Oracle ASMLib disks:               [  OK  ]

/etc/init.d/oracleasm createdisk CLU1 /dev/loop1
Marking disk "CLU1" as an ASM disk:                        [  OK  ]
/etc/init.d/oracleasm createdisk CLU2 /dev/loop2
Marking disk "CLU2" as an ASM disk:                        [  OK  ]
/etc/init.d/oracleasm createdisk CLU3 /dev/loop3
Marking disk "CLU3" as an ASM disk:                        [  OK  ]
/etc/init.d/oracleasm createdisk CLU4 /dev/loop4
Marking disk "CLU4" as an ASM disk:                        [  OK  ]
/etc/init.d/oracleasm createdisk CLU5 /dev/loop5
Marking disk "CLU5" as an ASM disk:                        [  OK  ]
/etc/init.d/oracleasm createdisk DATA1 /dev/loop6
Marking disk "DATA1" as an ASM disk:                       [  OK  ]
/etc/init.d/oracleasm createdisk DATA2 /dev/loop7
Marking disk "DATA2" as an ASM disk:                       [  OK  ]