IBM(R) System Storage Multipath Subsystem Device Driver Version 1.6.5.0-0 README for Solaris September 26, 2012 ------------------------------------------------------------------------------- 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 change history 3.1 Defects Fixed 3.2 New Features 3.3 Feature Details 3.4 Known issues 3.5 Correction to User's Guide 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 Multipath Subsystem Device Driver (SDD). This README file contains the most recent information about the IBM Multipath Subsystem Device Driver, Version 1 Release 6 Modification 5 Level 0-0 (SDD 1.6.5.0-0) for Solaris. IBM recommends that you go to the following Web site to get the most current information about this release of SDD: http://www.ibm.com/servers/storage/support/software/sdd.html You should carefully review the following information available through the website: 1. The most current README file. This will contain corrections to this readme file, corrections to the SDD User's Guide, and other documentation updates discovered since this copy of the README was prepared. 2. The Multipath SDD User's Guide. Because SDD can be installed in so many different environments / configurations, detailed information about each environment is placed in the appropriate chapter of the Multipath SDD Users Guide. The 'Summary of Changes' section of the SDD Users' Guide can help you quickly determine if the latest changes affect you. 3. The Flashes. As we become aware of any information that is likely to impact a broad set of our customers, Flashes are prepared and posted on this site. You should review this section periodically to see any new Flashes that have been posted since your last review. For prerequisites information, be sure to look in the Multipath SDD User's Guide as well as the prerequisites section of this readme file for the latest updates. 1.1 Who should read this README file This README file is in general intended for storage administrators, system programmers, and performance and capacity analysts. The information in this file only applies to customers who run: 1. DS8000 2. DS6000 3. SAN Volume Controller 4. ESS Please refer to SDD support matrix to determine the supported SDD levels for above storage subsystem. 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: http://www.ibm.com/servers/storage/support/software/sdd/ Go to the following Web site for the IBM ESS Open Systems support: http://www.ibm.com/servers/storage/disk/ess/ Go to the following Web site for IBM TotalStorage DS8000 support: http://www.ibm.com/servers/storage/disk/ds8000/index.html Go to the following Web site for IBM TotalStorage DS6000 support: http://www.ibm.com/servers/storage/disk/ds6000/index.html Go to the following Web site for IBM System Storage SAN Volume Controller support: http://www.ibm.com/servers/storage/support/software/sanvc/ 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 ------------------------------------------------------------------------------- 3.0 SDD Change History =============================================================================== 3.1 Defects Fixed None =============================================================================== 3.2 New Features 1. 4489 Support Solaris 10 ZFS 2. 4490 Change pkginfo to force Solaris SDD install on Global Zone Only. =============================================================================== 3.3 Feature Details 1. 4489 Allow user to configure ZFS devices with Solaris SDD vpath devices Please refer to the known ZFS issues below 2. 4490 Users are no longer required to specify option -G when installing Solaris SDD 1.6.5.0 or later in Solaris 10.SDD installs only in global zones. =============================================================================== 3.4 Known Issues 1. ZFS causes System Panic This is a ZFS issue. This panic will occur without SDD installed under certain condition. Panic occurs when ZFS filesystem fails to complete IOs due to IO path(s) no longer functioning. e.g. pulling all FC cable(s) between SUN host and storage will cause system panic if there are IOs on the luns configured by ZFS filesystem. This panic occurs without SDD and will also occurs with other multpathing solution such as MPXIO. This issue is resolved in Solaris 10 update 6 Typical panic stack messages in syslog 13:48:04 spheroid Mpanic[cpu1]/thread=2a10150dca0: 13:48:05 spheroid unix: [ID 809409 kern.notice] ZFS: I/O failure (write on off 0: zio 3001fb0ad00 L0 Z FS plain file] 20000L/20000P DVA[0]= <0:d4e0000:20000> fletcher2 uncompressed BE contiguous birth=591802 fill=1 cksum=9d40ab14520fdf80:61d458f078ac0900: 42554f3c034ca800: 629a73bc529a5a00): error 6 13:48:07 spheroid unix: [ID 100000 kern.notice] 13:48:08 spheroid genunix: [ID 723222 kern.notice] 000002a10150d840 zfs:zio_done+29c (0, 10, 60017d72100, 60010dd06c0, 3001fb0ad00, 0) 13:48:09 spheroid genunix: [ID 179002 kern.notice] %l0-3: 0000060014aa6040 000003001fa276c0 00000000702de218 0000000000000006 13:48:09 spheroid %l4-7: 0000000000000002 00000000000907ba 0000000000000006 0000000000000000 13:48:10 spheroid genunix: [ID 723222 kern.notice] 000002a10150d900 zfs:zio_vdev_io_assess+178 (3001fb0ad00, 8000 , 10, 0, 0, 10) 13:48:10 spheroid genunix: [ID 179002 kern.notice] %l0-3: 0000000000000002 0000000000000001 0000000000000000 0000000000000006 13:48:10 spheroid %l4-7: 0000000000000010 0000000001bf48b0 0000000000000000 000047e62baf87b0 13:48:11 spheroid genunix: [ID 723222 kern.notice] 000002a10150d9c0 genunix:taskq_thread+1a4 (60014a654b0, 60014a65458, 50001, 47e62d825ea0, 2a10150da8a, 2a10150da88) 13:48:12 spheroid genunix: [ID 179002 kern.notice] %l0-3: 0000000000010000 0000060014a65480 0000060014a65488 0000060014a6548a 13:48:12 spheroid %l4-7: 0000060014c42738 0000000000000002 0000000000000000 0000060014a65478 13:48:13 spheroid unix: [ID 100000 kern.notice] 13:48:14 spheroid genunix: [ID 672855 kern.notice] syncing file systems... 2 ZFS Warning messages During reboot after created some ZFS pools from SDD devices, there are Major SEVERITY warning messages in the system log as follows. Those are incorrect warning messages from ZFS. It does not indicate any real problem and should be ignored. Those incorrect warning will be fixed in future Solaris 10 update Typical warning messages in syslog 12:12:55 spheroid fmd: [ID 441519 daemon.error] SUNW-MSG-ID: ZFS-8000-CS, TYPE: Fault, VER: 1, SEVERITY: Major 12:12:55 spheroid EVENT-TIME: Wed Oct 8 12:12:55 MST 2008 12:12:55 spheroid PLATFORM: SUNW,Sun-Fire-280R, CSN: -, HOSTNAME: spheroid 12:12:55 spheroid SOURCE: zfs-diagnosis, REV: 1.0 12:12:55 spheroid EVENT-ID: 6460b745-f9a7-c03e-e7a1-c4efac2c19e1 12:12:55 spheroid DESC: A ZFS pool failed to open. Refer to http://sun.com/msg/ZFS-8000-CS for more information. 12:12:55 spheroid AUTO-RESPONSE: No automated response will occur. 12:12:55 spheroid IMPACT: The pool data is unavailable 12:12:55 spheroid REC-ACTION: Run 'zpool status -x' and either attach the missing device or 12:12:55 spheroid restore from backup. 3. sddgetdata on SDD 1.6.1.0-2 fails to collect SDD trace data SDD trace collection script /opt/IBMsdd/bin/sddgetdata has a typo in setting up the 'time' variable To fix the script, change the line from time=`date +'m%d_5/9/06M%S'` to time=`date +'%Y%m%d_%H%M%S'` 4. System may panic if AMCC/JNI HBA driver configuration parameter, TargetOfflineEnable, is set to 1 (default). This applies for JNI HBA driver 5.3.0.x or later. AMCC/JNI adapters have a configuration parameter, TargetOfflineEnable, which enables target offline when target port fails. By default, TargetOfflineEnable is set to 1. SDD requires this feature to be disabled to avoid some rare system panics. Users should modify the AMCC/JNI configuration file (/kernel/drv/jnic146x.conf) to disable this feature by setting TargetOfflineEnable=0. 5. Uninstalling SDD may hang on a single CPU system This problem only occurs with SDD 1.6.0.7 or SDD 1.6.0.8 on a single CPU system. Workaround: Please follow the procedure below to uninstall SDD 1.6.0.7 or SDD 1.6.0.8 on a single CPU system: a. delete file /kernel/drv/sparcv9/vpathdd if the system is running on a 64 bit kernel or delete file /kernel/drv/vpathdd if the system is running on a 32 bit kernel b. reboot the system c. run "pkgrm IBMsdd" to remove SDD 1.6.0.7 or SDD 1.6.0.8 package 6. For Solaris 8, SDS can not create metadb on Solaris SDD vpath devices. ================================================================================= 3.5 Correction to User's Guide 1. Procedure to exclude LUN(s) from being configured by SDD: a. Determine the Lun Identifier(s) of the LUN(s) to be excluded. b. Add the list of Lun Identifier(s) to the /etc/vpathexcl.cfg with one Lun Identifier per line. c. Run "cfgvpath -r" to reconfigure SDD. Vpath devices associated with the Lun Identifiers in the /etc/vpathexcl.cfg file will be removed. Subsequent SDD configuration will always exclude those Luns associated with the Lun Identifier listed in /etc/vpathexcl.cfg Note: By removing a Lun Identifier from the /etc/vpathexcl.cfg, SDD reconfiguration will create the vpath device for that lun again. Procedure To determine Lun Identifier(s) of the LUN(s) After SDD configuration which is done automatically after SDD installation, run "showvpath -l". The Lun Identifier will show under the Serial Number e.g. Following the extract from the output of "showvpath -l" vpath47: Serial Number : 13014712201 Lun Identifier: 6005076303FFC0590000000000002201 c4t0d1s2 /devices/pci@0,0/pci1022,7450@b/pci1077,101@4/sd@0,1:c,raw c4t3d1s2 /devices/pci@0,0/pci1022,7450@b/pci1077,101@4/sd@3,1:c,raw c5t0d1s2 /devices/pci@0,0/pci1022,7450@b/pci1077,101@4,1/sd@0,1:c,raw c5t1d1s2 /devices/pci@0,0/pci1022,7450@b/pci1077,101@4,1/sd@1,1:c,raw Note: Special consideration during SDD upgrade During SDD upgrade, /etc/vpathexcl.cfg will be replaced and the lun exclusion list will be lost. In order to retain the exclusion list after SDD upgrade, User should copy the existing /etc/vpathexcl.cfg to a new file say /etc/vpathexcl.cfg.sav BEFORE installing the new SDD package. After installing the new SDD package, user should copy the backup file /etc/vpathexcl.cfg.sav to replace /etc/vpathexec.cfg and rerun "cfgvpath -r" to exclude the luns again. 2. "datapath query portmap" only displays the status of slice 'c'. For example in the following output, row for vpath1 displays state of vpath1c and so on. For SDD 1.6.2.0-1 or later, the disk column will show slice 'c'. BAY-1(B1) BAY-2(B2) BAY-3(B3) BAY-4(B4) ESSID DISK H1 H2 H3 H4 H1 H2 H3 H4 H1 H2 H3 H4 H1 H2 H3 H4 ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD BAY-5(B5) BAY-6(B6) BAY-7(B7) BAY-8(B8) H1 H2 H3 H4 H1 H2 H3 H4 H1 H2 H3 H4 H1 H2 H3 H4 ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD FCA30 vpath1 ---- ---- ---- Y--- ---- ---- ---- ---- ---- ---- Y--- ---- ---- ---- ---- ---- 1301471 vpath2 ---- ---- --Y- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- --Y- ---- 13AADZA vpath3 ---Y ---- ---- ---- ---y ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- FCA30 vpath4 ---- ---- ---- Y--- ---- ---- ---- ---- ---- ---- Y--- ---- ---- ---- ---- ---- Y = online/open y = (alternate path) online/open O = online/closed o = (alternate path) online/closed N = offline n = (alternate path) offline - = path not configured PD = path down Note: 2105 devices' essid has 5 digits, while 1750/2107 device's essid has 7 digits. 3. Solaris SDD for Solaris 7 is no longer Supported. -------------------------------------------------------------------------------- 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. IBM does not transfer title to this Program and Documentation to you. The terms of this Agreement apply to any additional license copy of the Program or Documentation that IBM authorizes you to make. 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