How to Remove a Sun StorEdge T3/T3+ Disk Tray Logical Volume

Use this procedure to remove a logical volume. This procedure assumes all cluster nodes are booted and attached to the StorEdge T3/T3+ disk tray that hosts the logical volume you are removing.

This procedure defines Node A as the node you begin working with, and Node B as the remaining node.

This procedure removes all data on the logical volume you are removing.

1. If necessary, migrate all data and volumes off the logical volume you are removing. Otherwise, proceed to Step 2.

2. Is the logical volume you are removing a quorum device?

   # scstat -q

   • If yes, remove the quorum device before you proceed.

   • If no, go to Step 3.

   For the procedure on removing a quorum device, see the Sun Cluster 3.0 U1 System Administration Guide.

3. Are you running VERITAS Volume Manager?

   • If not, go to Step 4.

   • If you are running VERITAS Volume Manager, update its list of devices on all cluster nodes attached to the logical volume you are removing.

   See your VERITAS Volume Manager documentation for information about using the vxdisk rm command to remove devices (volumes) in your VERITAS Volume Manager device list.

4. Run the appropriate Solstice DiskSuite or VERITAS Volume Manager commands to remove the reference to the logical unit number (LUN) from any diskset or disk group.

   For more information, see your Solstice DiskSuite or VERITAS Volume Manager documentation.

5. Telnet to the disk tray and remove the logical volume.

   For the procedure on deleting a logical volume, see the Sun StorEdge T3 Disk Tray Administrator's Guide.

6. Determine the resource groups and device groups that are running on Node A and Node B.

   Record this information because you will use it in Step 13 of this procedure to return resource groups and device groups to these nodes.

   # scstat

7. Move all resource groups and device groups off Node A.

   # scswitch -S -h nodename

8. Shut down and reboot Node A by using the shutdown command with the i6 option.

   The -i6 option with the shutdown command causes the node to reboot after it shuts down to the ok prompt.

   # shutdown -y -g0 -i6

   For more information, see the Sun Cluster 3.0 U1 System Administration Guide.

9. On Node A, remove the obsolete device IDs (DIDs).

   # devfsadm -C # scdidadm -C

10. Move all resource groups and device groups off Node B.

    # scswitch -S -h nodename

11. Shut down and reboot Node B by using the shutdown command with the i6 option.

    The -i6 option with the shutdown command causes the node to reboot after it shuts down to the ok prompt.

    # shutdown -y -g0 -i6

    For more information, see the Sun Cluster 3.0 U1 System Administration Guide.

12. On Node B, remove the obsolete DIDs.

    # devfsadm -C # scdidadm -C

13. Return the resource groups and device groups you identified in Step 6 to Node A and Node B.

    # scswitch -z -g resource-group -h nodename # scswitch -z -D device-group-name -h nodename

    For more information, see the Sun Cluster 3.0 U1 System Administration Guide.

Where to Go From Here

To create a logical volume, see "How to Create a Sun StorEdge T3/T3+ Disk Tray Logical Volume".