Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

If the answer to any of these questions is "No," return to step 4 and perform

the required steps.

If the answer to all of the questions is "Yes," the LUN remove operation is

successful.

Adding new LUNs dynamically to a new target ID

In this case, a new group of LUNs is mapped to the host via multiple HBA ports.

An operating system device scan is issued for the LUNs to be recognized and added

to DMP control.

To add new LUNs dynamically to a new target ID

Identify which LUNs to add to the host. Do one of the following:

■ Use Storage Array Management to identify the Array Volume ID (AVID)

for the LUNs.

■ If the array does not report the AVID, use the LUN index.

Map/mask the LUNs to the new target IDs on multiple hosts.

Scan the operating system device.

See “Scanning an operating system device tree after adding or removing

LUNs” on page 203.

Repeat step 1 and step 2 until you see that all the LUNs have been added.

Use VxVM to perform a device scan. You must perform this operation on all

nodes in a cluster. Enter one of the following commands:

■

# vxdctl enable

■

# vxdisk scandisks

Refresh the DMP device name database using the following command:

# vxddladm assign names

Verify that the LUNs were added correctly by answering the following

questions:

■ Do the newly provisioned LUNs appear in the vxdisk list output?

■ Are the configured paths present for each LUN?

If the answer to any of these questions is "No," return to step 1 and begin the

procedure again.

Online dynamic reconfiguration

Reconfiguring a LUN online that is under DMP control

202