IBM AIX Continuous Availability Features - IBM Redbooks

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Setting efix state to: STABLE +-----------------------------------------------------------------------------+ Operation Summary +-----------------------------------------------------------------------------+ Log file is /var/adm/ras/emgr.log EPKG NUMBER LABEL OPERATION RESULT =========== ============== ================= ============== 1 beta_patch INSTALL SUCCESS Return Status = SUCCESS With the Remove Installed EFIXES menu, you can select an emergency fix to be removed.The menu is shown in Example 3-15. Example 3-15 Remove Installed EFIXES menu 76 IBM AIX Continuous Availability Features Remove Installed EFIXES Type or select values in entry fields. Press Enter AFTER making all desired changes. [Entry Fields] EFIX Label [] + -OR- LOCATION of EFIX List File [] / PREVIEW only? (remove operation will NOT occur) yes + EXTEND file systems if space needed? yes + DEBUG output? no + F1=Help F2=Refresh F3=Cancel F4=List F5=Reset F6=Command F7=Edit F8=Image F9=Shell F10=Exit Enter=Do We also tested the removal of the efix. Part of the output from the test is shown in Example 3-16. Example 3-16 Partial output of Remove Installed EFIXES menu COMMAND STATUS Command: OK stdout: yes stderr: no Before command completion, additional instructions may appear below. [TOP] +-----------------------------------------------------------------------------+ Efix Manager Initialization +-----------------------------------------------------------------------------+ Initializing log /var/adm/ras/emgr.log ... Accessing efix metadata ... Processing efix label "beta_patch" ... +-----------------------------------------------------------------------------+ Efix Attributes +-----------------------------------------------------------------------------+
LABEL: beta_patch INSTALL DATE: 10/11/07 15:36:45 [MORE...87] F1=Help F2=Refresh F3=Cancel F6=Command F8=Image F9=Shell F10=Exit /=Find n=Find Next From the Check Installed EFIXES menu, you can select the fixes to be checked. The menu is shown in Example 3-17. Example 3-17 Check Installed EFIXES menu Check Installed EFIXES Type or select values in entry fields. Press Enter AFTER making all desired changes. [Entry Fields] EFIX Label [] + -OR- LOCATION of EFIX List File [] / VERIFICATION Level [1] + DEBUG output? no + F1=Help F2=Refresh F3=Cancel F4=List F5=Reset F6=Command F7=Edit F8=Image F9=Shell F10=Exit Enter=Do 3.7 Storage protection keys Storage protection keys are designed to alleviate software issues that can appear because of memory overlays and addressing errors. In AIX, a large global address space is shared among a variety of software components and products. This section explains storage protection keys and describes how kernel programmers or application programmers use them. The storage protection key concept was adopted from the z/OS® and 390 systems, so AIX can confidently rely on this feature and its robustness. 3.7.1 Storage protection keys overview Storage protection keys and their support by the AIX kernel are new capabilities introduced with AIX Version 5.3 (user keys) and Version 6.1 (user and kernel keys) running on POWER6 hardware. In this paper, storage protection keys are also called storage keys or simply keys. Keys provide a context-sensitive storage protection mechanism for virtual memory pages. Software might use keys to protect multiple classes of data individually and to control access to data on a per-context basis. This differs from the older page protection mechanism, which is global in nature. Storage keys are available in both kernel-mode and user-mode application binary interfaces (ABIs). In kernel-mode ABIs, storage key support is known as kernel keys. In user space Chapter 3. AIX advanced continuous availability tools and features 77
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Front cover IBM AIX Continuous Avai
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Note: Before using this information
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2.3.7 Minidump . . . . . . . . . .
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vi IBM AIX Continuous Availability
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Trademarks The following terms are
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Engineering degree in Computer Scie
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Find out more about the residency p
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1.1 Overview In May 2007, IBM intro
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1.5 Continuous operations Continuou
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1.6.2 Availability 1.6.3 Serviceabi
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IBM has tried to enhance FFDC featu
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10 IBM AIX Continuous Availability
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2.1 System availability AIX is buil
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On AIX 5.3, the only way to persist
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When used on a standalone server (s
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mirrored volume group on the client
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2.2.1 Error checking Run-Time Error
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The PowerPC hardware gives software
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System dumps can also be user-initi
Page 40 and 41: Live dumps are small dumps that do
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Page 46 and 47: 2.3.14 syslog To display the boot l
Page 48 and 49: Logging can be added to many of the
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Page 52 and 53: 2.4.4 EtherChannel network traffic
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Page 56 and 57: operations) without affecting produ
Page 58 and 59: Quorum A quorum is a vote of the nu
Page 60 and 61: 2.5.8 Journaled File System-related
Page 62 and 63: Fast I/O failure is controlled by a
Page 64 and 65: display its output in a format suit
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Page 70 and 71: 3.1 AIX Reliability, Availability,
Page 72 and 73: This means that traditional AIX sys
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Page 76 and 77: also be used to obtain a snapshot o
Page 78 and 79: 3.5 Live dump and component dump Li
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Page 82 and 83: .vmker | YES | ON/3 | OFF/3 .vmpool
Page 84 and 85: The output of Start a Live Dump is
Page 86 and 87: Table 3-3 Concurrent update termino
Page 88 and 89: We tested the installation of an ef
Page 92 and 93: mode, storage keys are called user
Page 94 and 95: Example 3-19 shows the SMIT menu fo
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Page 98 and 99: KKEY_UPUBLIC, KKEY_FILE_DATA KKEY_U
Page 100 and 101: Note: Kernel keys and keysets, whic
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Page 106 and 107: } printf("hardware keyset after KER
Page 108 and 109: } param=atoi(*(argv+1)); printf("Te
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Page 114 and 115: 3.7.7 User mode protection keys Use
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Page 118 and 119: if (!strcmp(*(argv+1),"read")){ if
Page 120 and 121: strlen() at 0xd010da00 _doprnt(??,
Page 122 and 123: int pthread_attr_setukeyset_np (pth
Page 124 and 125: Machine State Save Area iar : 00000
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Page 128 and 129: A Vue script or Vue program is a pr
Page 130 and 131: ► An optional predicate The predi
Page 132 and 133: 3. Interval probe manager The inter
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Page 136 and 137: ► Errno names ► Signal names
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This places a large part of the bur
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Note: The frequency of checks made
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Non-fragments 00000066 Promotions 0
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immediately after the returned stor
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This option should be used with car
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3.9.6 KDB commands for XMDBG ► xm
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Name AIX version Hardware required
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Online resources These Web sites ar
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sysdumpdev 27 tprof 28 trace 28 trc
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subsequent reboot 71, 133 SUE 18 Sy
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