Sun Cluster 3.0-3.1 With Sun StorEdge 3510 or 3511 FC RAID Array Manual

ProcedureHow to Create and Map a LUN

Use this procedure to create a LUN from unassigned storage capacity.

Before You Begin

This procedure relies on the following prerequisites and assumptions.

  1. Follow the instructions in your storage device's documentation to create and map the LUN.

    To allow multiple clusters and nonclustered systems to access the storage device, create initiator groups by using LUN filtering or masking.

  2. Are you using multipathing?

  3. Are any devices that are associated with the LUN you created at an unconfigured state?

    # cfgadm -al | grep disk
    • If no, proceed to Step 4.

    • If yes, configure the STMS paths on each node that is connected to the storage device.

      cfgadm -o force_update -c configure controllerinstance

      For the procedure about how to configure STMS paths, see the Sun StorEdge Traffic Manager Installation and Configuration Guide.

  4. On one node that is connected to the storage device, use the format command to label the new LUN.

  5. From any node in the cluster, update the global device namespace.

    # scgdevs

    Note –

    You might have a volume management daemon such as vold running on your node, and have a CD-ROM drive connected to the node. Under these conditions, a device busy error might be returned even if no disk is in the drive. This error is expected behavior. You can safely ignore this error message.

  6. If you will manage this LUN with volume management software, use the appropriate Solstice DiskSuite/Solaris Volume Manager or VERITAS Volume Manager commands to update the list of devices on all nodes that are attached to the new volume that you created.

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

See Also