www.eygle.com

[root@danaly /]# fdisk /dev/cciss/c0d2

The number of cylinders for this disk is set to 52299.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/cciss/c0d2: 218.5 GB, 218501038080 bytes
255 heads, 32 sectors/track, 52299 cylinders
Units = cylinders of 8160 * 512 = 4177920 bytes

           Device Boot      Start         End      Blocks   Id  System
/dev/cciss/c0d2p1               1       26150   106691984   83  Linux
/dev/cciss/c0d2p2           26151       52299   106687920   83  Linux

Command (m for help): q 

[root@danaly /]# /etc/init.d/oracleasm createdisk VOL6 /dev/cciss/c0d2p2
Marking disk "/dev/cciss/c0d2p2" as an ASM disk: [  OK  ]
[root@danaly /]# /etc/init.d/oracleasm listdisks
VOL1
VOL2
VOL3
VOL4
VOL5
VOL6 

SQL> select name,TOTAL_MB,FREE_MB from v$asm_diskgroup;

NAME         TOTAL_MB    FREE_MB
---------- ---------- ----------
ORADG           69459      17384

SQL> alter diskgroup ORADG add disk 'ORCL:VOL6' rebalance power 11;

Diskgroup altered.

SQL> select group_number,disk_number,mode_status,name from v$asm_disk;

GROUP_NUMBER DISK_NUMBER MODE_STATUS    NAME
------------ ----------- -------------- ----------
           0           4 ONLINE
           1           0 ONLINE         VOL1
           1           1 ONLINE         VOL2
           1           2 ONLINE         VOL3
           1           3 ONLINE         VOL4
           1           4 ONLINE         VOL6

6 rows selected.

SQL> select name,TOTAL_MB,FREE_MB from v$asm_diskgroup;

NAME         TOTAL_MB    FREE_MB
---------- ---------- ----------
ORADG          173646     121569