How to Restrict Logical Unit Access to Selected Systems

Use this procedure to restrict LU access to selected hosts on a storage network. If you are using Fibre Channel ports, first identify the World Wide Names (WWN). Then, selectively map a logical unit number (LUN) to the ports on host-a, for example. A target group (targets-0) is also defined for a given set of target ports that export the same set of LUs to the same host group.

For information about configuring a target group, see stmfadm(1M).

1. Become an administrator.
2. Identify the Fibre Channel (FC) port on the initiator.

   initiator# fcinfo hba-port
   HBA Port WWN: 210000e08b195dae
   Port Mode: Initiator
   Port ID: 0
   OS Device Name: /dev/cfg/c8
   Manufacturer: QLogic Corp.
   Model: 375-3108-xx
   Firmware Version: 03.03.28
   FCode/BIOS Version:  fcode: 1.13;
   Serial Number: not available
   Driver Name: qlc
   Driver Version: 20100408-3.01
   Type: unknown
   State: offline
   Supported Speeds: 1Gb 2Gb
   Current Speed: not established
   Node WWN: 200000e08b195dae
   NPIV Not Supported
   .
   .
   .

3. Create a host group.

   target# stmfadm create-hg host-a

4. Add the WWNs identified in the preceding output as members of the host group.

   target# stmfadm add-hg-member -g host-a  210000e08b195dae 210100e08b395dae

5. Create a target group.

   target# stmfadm create-tg targets-0

6. Specify the target group members by adding the target names.

   Each SCSI target can be a member of only one target group.

   target# stmfadm add-tg-member -g targets-0 wwn.guid-number

7. Identify the GUID number for the LU.

   target# stmfadm list-lu -v

8. Make the LU available by adding a view entry, specifying the host group name and the LU GUID number.

   target# stmfadm add-view -h host-a -t targets-0 -n 1 guid-number