DB: 11g RAC 11.2.0.4.3
OS: RHEL5.4
1.給新增的共享磁盤分區，本例只添加了一個1G的磁盤，這裏直接劃一個分區/dev/sdf1，格式ext3
劃完後，在所有節點執行partprobe/dev/sdf1來是所有節點的系統識別該分區
[root@rac1~]# partprobe /dev/sdf1
[root@rac2grid]# partprobe /dev/sdf1
2.在主節點創建ASM磁盤，在其他節點掃描新的ASM磁盤
[root@rac1~]# oracleasm listdisks
DATA
FRA
OCRVOTE
[root@rac1~]# oracleasm createdisk DATA1 /dev/sdf1
Writing disk header:done
Instantiating disk:done
[root@rac1~]# oracleasm listdisks
DATA
DATA1
FRA
OCRVOTE
[root@rac2grid]# oracleasm listdisks
DATA
FRA
OCRVOTE
[root@rac2grid]# oracleasm scandisks
Reloading diskpartitions: done
Cleaning any stale ASMdisks...
Scanning system for ASMdisks...
Instantiating disk"DATA1"
[root@rac2grid]# oracleasm listdisks
DATA
DATA1
FRA
OCRVOTE
3.將新增的盤使用udev持久化
[root@rac1 ~]#/sbin/scsi_id -g -u -s /block/sdf
36000c29f6031e2dfff55a25cd173e335
[root@rac1 ~]# vi/etc/udev/rules.d/99-oracle-asmdevices.rules
KERNEL=="sd*",BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p",RESULT=="36000c29e2c8f3ffaead91b96d74d1895", NAME="crs",OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd*",BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p",RESULT=="36000c29836b1c4cc21178424b5d7c892", NAME="data",OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd*",BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p",RESULT=="36000c29404d2c7087abdde0835f52c48", NAME="fra",OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd*",BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p",RESULT=="36000c29c93582249e3015b1aa82b3773",NAME="ocrvote", OWNER="grid", GROUP="asmadmin",MODE="0660"
KERNEL=="sd*",BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p",RESULT=="36000c29f6031e2dfff55a25cd173e335",NAME="data1", OWNER="grid", GROUP="asmadmin",MODE="0660"
[root@rac1 ~]# scp /etc/udev/rules.d/99-oracle-asmdevices.rulesrac2:/etc/udev/rules.d/99-oracle-asmdevices.rules
Warning: Permanentlyadded the RSA host key for IP address '172.18.130.202' to the list of knownhosts.
root@rac2's password:
99-oracle-asmdevices.rules 100% 842 0.8KB/s 00:00
所有節點重啓udev：
[root@rac1 ~]# start_udev
Starting udev: [ OK ]
[root@rac2 grid]# start_udev
Starting udev: [ OK ]
[root@rac2 grid]#
4.將新的磁盤添加的已有磁盤組中
SQL>select group_number,disk_number,name,path,failgroup from v$asm_disk;
GROUP_NUMBERDISK_NUMBER NAME PATH FAILGROUP
----------------------- ------------------------------ ------------------------------------------------------------
0 0 ORCL:DATA1
1 0 DATA ORCL:DATA DATA
2 0 FRA ORCL:FRA FRA
3 0 OCRVOTE ORCL:OCRVOTE OCRVOTE
注意到新增加的磁盤的磁盤組號和磁盤號都是0，且磁盤名爲空。
SQL>select group_number,name,state,type,total_mb,free_mb from v$asm_diskgroup;
GROUP_NUMBER NAME STATE TYPE TOTAL_MB FREE_MB
------------------------------------------ --------------------------------------------------- ---------- ----------
1 DATA MOUNTED EXTERN 20473 16981
2 FRA MOUNTED EXTERN 20473 2399
3 OCRVOTE MOUNTED EXTERN 1019 623
SQL>show parameter power
NAME TYPE VALUE
--------------------------------------------------------------------- ------------------------------
asm_power_limit integer 1
SQL>alter system set asm_power_limit=0;
SQL>alter diskgroup DATA add disk 'ORCL:DATA1';
Diskgroup altered.
SQL>alter diskgroup DATA rebalance power 11;
Diskgroup altered.
SQL>select * from v$asm_operation;
GROUP_NUMBEROPERATION STATE POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES
--------------------------- ------------ ---------- ---------- ---------- -------------------- -----------
ERROR_CODE
------------------------------------------------------------------------------------------------------------------------
1 REBAL WAIT 11
SQL>select group_number,disk_number,name,path,failgroup from v$asm_disk;
GROUP_NUMBERDISK_NUMBER NAME PATH FAILGROUP
----------------------- ------------------------------ ------------------------------------------------------------
1 0 DATA ORCL:DATA DATA
2 0 FRA ORCL:FRA FRA
3 0 OCRVOTE ORCL:OCRVOTE OCRVOTE
1 1 DATA1 ORCL:DATA1 DATA1
SQL>select group_number,name,state,type,total_mb,free_mb from v$asm_diskgroup;
GROUP_NUMBER NAME STATE TYPE TOTAL_MB FREE_MB
------------------------------------------ --------------------------------------------------- ---------- ----------
1 DATA MOUNTED EXTERN 21492 17998
2 FRA MOUNTED EXTERN 20473 2399
3 OCRVOTE MOUNTED EXTERN 1019 623
可以看到DATA磁盤組總容量和空閒容量由（20473，16981）變成了（21492，17998）
1G的DATA1磁盤已經加到DATA磁盤組中了。