How to Add a Shared Disk Quorum Device

Sun Cluster software supports shared-disk (both SCSI and SATA) devices as quorum devices. A SATA device does not support a SCSI reservation, and you must disable the SCSI reservation fencing flag and use the software quorum protocol to configure these disks as quorum devices.

To complete this procedure, identify a disk drive by its device ID (DID), which is shared by the nodes. Use the cldevice show command to see the list of DID names. Refer to the cldevice(1CL) man page for additional information. Ensure that all nodes in the cluster are online before adding a new quorum device.

Use this procedure to configure SCSI or SATA devices.

The phys-schost# prompt reflects a global-cluster prompt. Perform this procedure on a global cluster.

This procedure provides the long forms of the Sun Cluster commands. Most commands also have short forms. Except for the long and short forms of the command names, the commands are identical. For a list of the commands and their short forms, see Appendix B, Sun Cluster Object-Oriented Commands.

1. Become superuser or assume a role that provides solaris.cluster.modify RBAC authorization on any node of the cluster.

2. Start the clsetup utility.

   # clsetup

   The clsetup Main Menu is displayed.

3. Type the number that corresponds to the option for Quorum.

   The Quorum Menu is displayed.

4. Type the number that corresponds to the option for adding a quorum device, then type yes when the clsetup utility asks you to confirm the quorum device that you are adding.

   The clsetup utility asks what type of quorum device you want to add.

5. Type the number that corresponds to the option for a shared-disk quorum device.

   The clsetup utility asks which global device you want to use.

6. Type the global device you are using.

   The clsetup utility asks you to confirm that the new quorum device should be added to the global device you specified.

7. Type yes to continue adding the new quorum device.

   If the new quorum device is added successfully, the clsetup utility displays a message to that effect.

8. Verify that the quorum device has been added.

   # clquorum list -v

Example 6–1 Adding a Shared Disk Quorum Device

The following example shows the clquorum command generated by clsetup when it adds a shared-disk quorum device and a verification step.

Become superuser or assume a role that provides solaris.cluster.modify RBAC authorization on any cluster node.

[Start the clsetup utility:]
# clsetup
[Select Quorum>Add a quorum device]
[Answer the questions when prompted.]
[You will need the following information.]
  [Information:                       Example:]
  [Directly attached shared disk      shared_disk]
  [Global device		                  d20]

[Verify that the clquorum command was completed successfully:]
 clquorum add d20
 
    Command completed successfully.
[Quit the clsetup Quorum Menu and Main Menu.]
[Verify that the quorum device is added:]
# clquorum list -v
 
Quorum         Type
-------         ----
d20              shared_disk
scphyshost-1    node
scphyshost-2    node