IBM(R) SUBSYSTEM DEVICE DRIVER VERSION 1.4.0.0 README FOR AIX™ --------------------------------------------------------------------------- CONTENTS 1.0 About this README file 1.1 Who should read this README file 1.2 How to get help 2.0 Prerequisites for SDD 3.0 SDD defects and fixes 4.0 User license agreement for IBM device drivers 4.1 Background / Purpose 4.2 Definitions 4.3 License grant 4.4 Responsibilities 4.5 Confidential information 4.6 Limitation of liability 4.7 Termination 4.8 Representations and warranties 4.9 General provisions 4.10 Appendix A 5.0 Notices 6.0 Trademarks and service marks --------------------------------------------------------------------------- 1.0 About this README file Welcome to IBM Subsystem Device Driver (SDD). This README file contains the most recent information about the IBM Subsystem Device Driver, Version 1 Release 4 Modification 0 Level 0 (SDD 1.4.0.0) for AIX. IBM recommends that you print and review the contents of this README file and the Subsystem Device Diver User’s Guide before installing and using SDD. You can find the most current documentation and support information on the Web site: www.ibm.com/storage/support/techsup/swtechsup.nsf/support/sddupdates/ 1.1 Who should read this README file This README file is intended for storage administrators, system programmers, and performance and capacity analysts. The information in this file only applies to customers who run ESS. 1.2 How to get help Go to the following Web site for SDD technical support and for the most current SDD documentation and support information: www.ibm.com/storage/support/techsup/swtechsup.nsf/support/sddupdates/ 1.3 Go to the following Web site for the IBM ESS Open Systems support: www.storage.ibm.com/hardsoft/products/ess/supserver.htm 1.4 Call one of the following numbers to obtain nontechnical or administrative support, such as hardware and software orders, hardware maintenance, services contract of entitlement, and invoices: .For commercial or state and local support operations: 1-877-426-6006 (Listen to the voice prompts) .For business partner support operations: 1-800-426-9990 .For federal government support operations: 1-800-333-6705 ------------------------------------------------------------------------ 2.0 Prerequisites for SDD Prior to installing SDD, you should install the latest version of ibm2105.rte. The latest version of ibm2105.rte for SDDv1.4.0.0 is 32.6.100.14. ------------------------------------------------------------------------ 3.0 SDD defects and fixes Missing section in the User's Guide: Upgrading SDD Manually If you are upgrading from a previous version of the SDD that you installed with an installation package not listed in Table 8, or if you use migration to upgrade from AIX 4.3.3 to AIX 5.1.0, you cannot perform an installation upgrade. Instead, you must uninstall the existing SDD and then install the new version of SDD. Perform the following steps to upgrade SDD: 1. Remove any .toc files generated during previous SDD installations. Type the following command to delete any .toc file found in the /usr/sys/inst.images directory: rm .toc Note: Ensure that this file is removed because it contains information about the previous version of SDD. 2. Issue the lspv command to find out all the SDD volume groups. 3. Issue the lsvgfs command for each SDD volume group to find out which file systems are mounted. Type the following command: lsvgfs vg_name 4. Issue the umount command to unmount all file systems belonging to SDD volume groups. Type the following command: umount filesystem_name 5. Run the vp2hd script to convert the volume group from SDD devices to ESS hdisk devices. 6. Issue the varyoffvg command to vary off the volume groups. Type the following command: varyoffvg vg_name 7. Remove all SDD devices. Type the following command: rmdev -dl dpo -R 8. Use the smitty command to uninstall SDD. Type smitty deinstall and press Enter. The uninstall process begins. Complete the uninstall process. See "Removing SDD from an AIX host system" for the step-by-step procedure for uninstalling SDD. 9. If you have an AIX migration system, use the smitty command to upgrade your operating system from AIX 4.3.3 to AIX 5.1.0. 10. Use the smitty command to install the newer version of SDD from the compact disc. Type smitty install and press Enter. The installation process begins. Go to to complete the installation process. 11. Use the smitty device command to configure all the SDD devices to the Available state. See for a step-by-step procedure for configuring devices. 12. Issue the lsvpcfg command to verify the SDD configuration. Type the following command: lsvpcfg 13. Issue the varyonvg command for each volume group that was previously varied offline. Type the following command: varyonvg vg_name 14. Run the hd2vp script for each SDD volume group to convert the physical volumes from ESS hdisk devices back to SDD vpath devices. Type the following command: hd2vp vg_name 15. Issue the lspv command to verify that all physical volumes of the SDD volume groups are SDD vpath devices. 16. Issue the mount command to mount all file systems that were unmounted in step 4. Type the following command: mount filesystem-name Attention: If the physical volumes on an SDD volume group’s physical volumes are mixed with hdisk devices and vpath devices, you must run the dpovgfix utility to fix this problem. Otherwise, SDD will not function properly. Issue the dpovgfix vg_name command to fix this problem. Correction to section entitled 'Unconfiguring Subsystem Device Driver' on page 25: 1. Before you unconfigure SDD devices, ensure that: All I/O activities on the devices that you need to unconfigure are stopped. All file systems belonging to the SDD volume groups are unmounted and all volume groups are varied off. 2. Run the vp2hd conversion script to convert the volume group from SDD devices (vpathN) to ESS or SAN Volume Controller devices (hdisks). FEATURE/ENHANCEMENT 1459 Support coexistence of ESS and SAN Volume Controller. Support displaying devices information by device model with -d option added to datapath query device/devstats and lsvpcfg. 1860 Add a new function in SDD PE tool - pathtest to control SDD AIX trace. 1889 Merge SDD AIX *hacmp*.rte and *nonhacmp*.rte into single SDD package. Support new migration/upgrade install w/o system reboot. 1896 Increase the maximum number of ESS LUN support to 1200 on AIX 5.2 only. Support varying max_path per vpath device with a new attribute. For details about max_path allowed for different maximum lun value, see User's Guide. 1919 Support NIM and APAR/PTF upgrade capability. 2010 Shorten the time on making volume groups with large number of devices by replacing device change method with chgvpath which avoids device reconfiguration. 2058 Exclude pcm devices to be configured as SDD vpath device. Prevent installation of ibm2105.rte if mpio host attachment script is installed. DEFECT 1968 Issue LUN_RESET to bring scsi device out of fSTOPSign condition to fix failure of HACMP failover on certain ESS devices. 1988 Not retry on EINVAL failure code. 2038 Fix sddsrv bug that leaves vpath0 in open state if Adapter/Device performance link from the Web has been invoked. ------------------------------------------------------------------------ 4.0 User license agreement for IBM device drivers NOTICE: PLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THE PROGRAM AND DOCUMENTATION. IBM(R) WILL ONLY LICENSE THIS PROGRAM AND DOCUMENTATION TO YOU IF YOU FIRST ACCEPT THE TERMS OF THIS AGREEMENT. BY USING THE PROGRAM AND DOCUMENTATION, YOU AGREE TO ABIDE BY THESE TERMS AND APPLICABLE COPYRIGHT LAWS. IBM LIMITS YOUR ACCEPTANCE OF THE PROGRAM AND DOCUMENTATION TO THE TERMS OF THIS AGREEMENT. The Program and Documentation is owned by International Business Machines Corporation or one of its subsidiaries (IBM) or IBM suppliers, and is copyrighted and licensed, not sold. 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