Release Notes hp StorageWorks Secure Path v2.0D Service Pack 2 for IBM AIX Product Version: 2.0D Service Pack 2 Eighth Edition (May 2004) Part Number: T3034–98201 This document summarizes features and characteristics of the Secure Path v2.0D Service Pack 2 for IBM AIX systems using HP StorageWorks Array Controllers for Fibre Channel. This document provides information not covered elsewhere in the product documentation.
© Copyright 2001–2004 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
About this document About this document This section describes the content reflected in this document, including: ■ Release notes information, page 3 ■ Intended audience, page 3 ■ Secure Path for IBM AIX web kit contents, page 4 Release notes information These Release Notes cover the following major topics: ■ Operating system support, page 5 ■ Secure Path operational features, page 6 ■ Operating considerations, page 10 ■ Avoiding problem situations, page 20 Intended audience This document is
Secure Path for IBM AIX web kit contents Secure Path for IBM AIX web kit contents The StorageWorks Secure Path v2.0D Service Pack 2 for IBM AIX comprises: ■ The Secure Path documentation: — HP StorageWorks Secure Path v2.0D for IBM AIX Installation Guide, part number AA-RLT0F-TE — HP StorageWorks Secure Path v2.0D Service Pack 2 for IBM AIX Release Notes, part number T303-98101 (this document) ■ The following Secure Path software: — Secure Path v2.
Operating system support Operating system support Table 1 lists the hardware and software supported by this release. Table 1: Required Components Host Feature Platform Requirement IBM RS/ 6000 (PCI bus only) Operating Systems AIX 4.3.3, AIX 5.1, or AIX 5.2 Secure Path Software Kit HP StorageWorks Secure Path v2.0D Service Pack 2 for IBM AIX Storage Systems HSG80 RAID Storage Systems with dual controllers running ACS v8.6 or v8.7 HSV100 RAID Storage Systems with dual controllers running VCS v3.
Secure Path operational features Secure Path operational features Hardware prerequisites for Secure Path Two paths must exist between each server and storage system.
Secure Path operational features Installing the new driver The Secure Path v2.0D Service Pack 2 for IBM AIX v2.0D is available through the HP website http://h18004.www1.hp.com/products/sanworks/secure-path/index.html. Note: A previous version of Secure Path for IBM AIX must be installed on your system. After downloading the software, drivers, and associated documentation to a directory of your choice, install the new driver as follows. 1.
Secure Path operational features Installation types Installations of Secure Path v2.0D Service Pack 2 may be of two types: ■ A server that has never been configured with a RAID system. For this installation, verify that the steps outlined in Chapter 3 of the HP StorageWorks Secure Path v2.0D for IBM AIX Installation Guide have been completed. ■ A server that already has a RAID system with a single path installation under the IBM AIX Solution Kit.
Secure Path operational features For more information on HACMP and agent installation, refer to one of the following references: ■ HP StorageWorks HSG80 ACS Solution Software Version 8.7 for IBM AIX Installation and Configuration Guide ■ HP StorageWorks IBM AIX Kit V3.01 or V3.01 for Enterprise Virtual Array Installation and Configuration Guides Partitioned storagesets Storage Units configured from partitioned storagesets must be identified and defined as other units on the RAID storage system.
Operating considerations Operating considerations Configuration The following example shows the output when displaying the Secure Path Adapters using the lsdev –Cc adapter and the attached storage using lsdev –Cc disk commands.
Operating considerations hdisk3 Available 20-58-00-0,3 HP HSG80 RAID Array hdisk4 Available 20-58-00-0,4 HP HSG80 RAID Array hdisk5 Available 20-58-00-0,5 HP HSG80 RAID Array hdisk6 Available 20-58-00-0,1 HP HSG80 RAID Array hdisk7 Available 20-58-00-0,2 HP HSG80 RAID Array In the previous example, note that the output HP HSG80 RAID Array hdisks are all assigned to one of the two Cambex Fibre Channel I/O Controllers for the Secure Path configuration.
Operating considerations Most of these functions may also be accessed by the Secure Path management utility (cbxfcsm), but there are some additional parameters which cannot be modified from cbxfcsm. Note: At any point, if you wish to see the command line smit uses to execute a function, press F6 and the command line displays. From the smit utility System Management menu, choose Devices. This presents a list of applicable devices to the system. Then choose the Cambex Fibre Channel Adapter menu.
Operating considerations Caution: Changing any of the other options on the Change/Show Characteristics of a Cambex adapter can result in system instability and/or unpredictable behavior. To receive specific information on any of the other options, move the cursor over the option, press F1, and a brief description displays. The next two items on the Change / Show Characteristics of a Cambex FC Adapter menu are Generate Error Report and Trace Cambex FC Adapters.
Operating considerations Dynamic LUNs Storage units may be added or deleted from your overall storage configuration without having to stop I/O and reboot the system. You can add units to the currently active Storage System. You can also add or remove a RAID Storage System with one or more units defined. Adding storage units To add storage units use the following steps: 1. Establish a connection to the storage system either through a serial port connection or through the SWCC agent.
Operating considerations Deleting storage units Note: Before deleting storage units you must stop I/O to that unit, unmount the Logical Volume, and export the Volume Groups that have been created on the designated unit to be deleted. Refer to Appendix A, Removing Secure Path Software in the HP StorageWorks Secure Path v2.0D for IBM AIX Installation Guide. You only need to remove Volume Groups from the storage unit to be deleted. To delete (remove) storage units use the following steps: 1.
Operating considerations Table 2: LUN and hdisk Assignment hdisk LUN 4 D1 5 D2 6 D3 7 D4 8 D5 9 D6 10 D7 11 D8 12 D9 13 D10 14 D11 15 D12 If LUN D9 is deleted from the storage system then hdisk12 must be removed from the AIX configuration table. 7. To complete the process, enter the following on the command line in the AIX system: # cfgmgr Although hdisk12 has been removed the sequence numbers of the other hdisks are not affected with the cfgmgr command.
Operating considerations Note: The hdisks assigned to the HSG80 RAID array are in sequence with the defined LUNS but this sequence may be interrupted by other devices that had been previously defined in the IBM AIX system. For example, hdisk4 through hdisk8 may be assigned to LUNs D1 through D5, hdisk9 may be another SCSI device and hdisk10 through hdisk16 are assigned to LUNs D6 through D12. There is no requirement that LUNs be created sequentially. For example, you can create LUNs D1, D4, D6, and D12.
Operating considerations Note: The following example uses a CLI Command. HSG_CONTROL> SHOW UNITS LUN Uses Used by --------------------------------------------------------------D1 DISK10000 D2 DISK20000 D4 DISK30000 D5 DISK30100 D6 DISK50300 D7 DISK30300 D8 DISK40100 D10 DISK40300 List the association of hdisks to RAID storage units using the Secure Path utility /usr/cbxfc/cbxfcsm listall. In the following example, scsi2 and scsi3 are the HBAs for Secure Path.
Operating considerations Reassigning storage units To reassign a storage unit to a different LUN, the current LUN must first be deleted (see “Deleting storage units” on page 21) and the storage unit (DISK, RAIDSET, etc.) must be initialized using the CLI command INIT, such as INIT DISK40100. The storage unit may then be assigned to a new LUN using the CLI ADD command. The new LUN must be made available using cfgmgr. Volume groups previously exported must be imported and mounted.
Avoiding problem situations Avoiding problem situations Sequence of removing hdisks and adapters If it becomes necessary to remove the HBA from the host computer it is recommended that the hdisks be removed first and independently of the adapters. Attempting to remove both the hdisks and the adapters using rmdev –Rdl scsix can cause a system freeze in some instances, forcing a reboot. Connection offsets The HSG controller ACS allows for connection offsets.
Avoiding problem situations Deleting storage units To delete Storage Units, you must deactivate and export any volume groups defined on the physical storage unit that is to be deleted. HP recommends that you back up all information in your volume groups before you proceed. Retain the logical volume and volume group information. This information is useful when restoring the volume group later.
