Complete these tasks to configure disk devices for use with Oracle Automatic Storage Management (Oracle ASM).
- If necessary, install the disks that you intend to use for the disk group and restart the system.
- To ensure that the disks are available, enter the following command:
# /usr/sbin/lsdev -Cc disk
The output from this command is similar to the following:
hdisk0 Available 1A-09-00-8,0 16 Bit LVD SCSI Disk Drive hdisk1 Available 1A-09-00-9,0 16 Bit LVD SCSI Disk Drive hdisk2 Available 17-08-L SSA Logical Disk Drive
- If a disk is not listed as available, then configure the new disks:
- Enter the following command on any node to identify the device names for the physical disks that you want to use:
# /usr/sbin/lspv | grep -i none
This command displays information similar to the following for each disk that is not configured in a volume group:
hdisk2 0000078752249812 None
In this example,
hdisk2is the device name of the disk and
0000078752249812is the physical volume ID (PVID). The disks that you want to use may have a PVID, but they must not belong to a volume group.
- Enter commands similar to the following to clear the PVID from each disk device that you want to use:
# /usr/sbin/chdev -l hdiskn -a pv=clear
- Enter commands similar to the following to change the owner, group, and permissions on the character file for each disk that you want to add to the disk group:
# chown oracle:dba /dev/rhdiskn # chmod 660 /dev/rhdiskn
Note:If you are using a multi-pathing disk driver with Automatic Storage Management, then ensure that you set the permissions only on the correct logical device name for the disk.