Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

76543210Byte

DGcountDGcountDGcountDGcountRGPA+nIDValue

where DGcount is the count of disk group in the configuration

Displaying the I/O fencing registration keys

You can display the keys that are currently assigned to the disks using the

vxfenadm command.

The variables such as disk_7, disk_8, and disk_9 in the following procedure

represent the disk names in your setup.

To display the I/O fencing registration keys

To display the key for the disks, run the following command:

# vxfenadm -s disk_name

For example:

■ To display the key for the coordinator disk /dev/vx/rdmp/c1t1d0 from

the system with node ID 1, enter the following command:

# vxfenadm -s /dev/vx/rdmp/c1t1d0

key[1]:

[Numeric Format]: 86,70,68,69,69,68,48,48

[Character Format]: VFDEED00

* [Node Format]: Cluster ID: 57069 Node ID: 0 Node Name: galaxy

The -s option of vxfenadm displays all eight bytes of a key value in three

formats. In the numeric format,

■ The first two bytes, represent the identifier VF, contains the ASCII

value 86, 70.

■ The next four bytes contain the ASCII value of the cluster ID 57069

encoded in hex (0xDEED) which are 68, 69, 69, 68.

■ The remaining bytes contain the ASCII value of the node ID 0 (0x00)

which are 48, 48. Node ID 1 would be 01 and node ID 10 would be 0A.

An asterisk before the Node Format indicates that the vxfenadm command

is run from the node of a cluster where LLT is configured and running.

■ To display the keys on a CVM parallel disk group:

# vxfenadm -s /dev/vx/rdmp/disk_7

Reading SCSI Registration Keys...

Administering SF Oracle RAC and its components

Administering I/O fencing

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