AIX 5L Problem Determination - IBM Redbooks

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ecent CPU usage 241 recovering an incorrectly removed disk 148 Redbooks Web site 343 Contact us xx redefinevg command 141 reducevg command 172 commands reducevg 146 relocation of data 140 remote procedure call 273 remote reboot 72 remove the disk with rmdev 146 removing bad disk 146 removing file systems 155 removing paging space 168 replacement of disk 144 replacing disk 144 report filtering trace reports 214 reports trace reports 213 resource sets (WLM) 289 restbase 23 RIP 185 rmdev command 172 rmlvcopy command 146, 172 rmps command 168–169 ROS Level 46 route 185 routed 184 routing problems 181 tables 181 default 182 RPA 44 RPC 273 rpc.lockd 189 rpc.mountd 189 rpc.statd 189 rs6k 44 rs6ksmp 44 rset 291 rset registry 291 rspc 44 runacct 128 runlevel 32 S sar 235, 300 /usr/lib/sa/sa1 236 /usr/lib/sa/sa2 236 display previously captured data 236 flag table 300 real-time sampling and display 235 system activity accounting via cron daemon 236 savebase 31 savebase command 27 scenario replacing a disk 144 schedtune 254 SCHED_R and SCHED_D guidelines 257 scheduler CPU penalty figure 257 SCHED_R and SCHED_D guidelines 257 SCSI adapter 49 bus analyzer 52 sendmail 217 sequential-access read ahead 259 Serial Storage Architecture (SSA) 54 service boot 16, 21 Service Request Number (SRN) 49 setgid() system call 288 setpri() system calls 288 setuid() system call 288 shconf command 74 shdaemon daemon 73 sigact pseudo file 163 single-user mode 47 smdemon.cleanu 217 smit dump 69 SMIT fast path smit chgsys 208 smit chlicense 202 smit jfs 151 smit resolv.conf 205 smitty install_update 312 maintain_software 310 ssaraid 55 snap command 77, 95 flags 96 syntax 96 software updates 307 354 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques
software patch installation 312 software problems 9 software states applied 309 committed 309–310 reject 310 sparse file allocation 154 SRC 130 SRN 49–50, 59 SSA adapter information 55 loop 54 speed 54 devices 55 divide disk 55 SSA RAID 55 setup 54 SSA disk 146 stale logical volume 148 startsrc 183, 190 startsrc command 204, 226 startup 128 statfs 157 static routes 184 status pseudo file 164 stopsrc 190 strings command 83, 97 flags 97 syntax 97 su command 208 subclass 277 subserver telnetd 204 superblock 27 fixing bad superblock 153 superclass 277 svmon 248, 253 command report 253 detailed segment report 253 frame report 254 global report 253 process report 253 segment report 253 tier report 254 user report 253 workload management class report 254 swapoff command 169 synclvodm command 141, 150 syncvg 30 syncvg command 141, 148, 173 sysdumpdev 76 sysdumpdev command 66–68, 70–71, 76–77, 98, 168 flags 99 syntax 98 sysdumpstart command 68, 100 flags 101 syntax 100 sysent pseudo file 164 syslogd 130, 217 system access adjusting number of processes per user 207 full file system 210 telnet problems 203 system calls exec() 284, 288 plock() 288 setgid() 288 setpri() 288 setuid() 288 system dump 65 copy 77 dump device configuration 66 increase size 76 pre-requisites 66 examine with crash 84 panic string 86 routines 79 starting dump 68 command line 68 key sequences 71 reset button 70 smit interface 69 status check 74 status codes 74, 100 system dumps reading 79 system events tracing 211 system hang 95 system resource controller - SRC lssrc 225 lssrc command 204 startsrc 226 startsrc command 204 Index 355
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ibm.com/redbooks IBM Certification
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Note: Before using this information
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3.5.1 The /etc/inittab file . . . .
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7.2.1 Data relocation . . . . . . .
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9.9.1 The lslicense command . . . .
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x IBM ^ Certification Study Guide -
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10-12 Performance tuning flowchart
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8-7 Commonly used flags of the rout
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Trademarks The following terms are
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This publication does not replace p
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Comments welcome Your comments are
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1.1 Certification requirements To a
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e. Verify that file systems are mou
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Preparation for this exam is the to
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2.1 Defining the problem The first
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If the problem occurs on more than
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2.4.1 Answers The following are the
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3.1 A general overview of the boot
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mainly to components on the motherb
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Figure 3-3 Task selection menu in d
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3.2.2 PCI systems next step is to s
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3.3 Boot phase 1 Newer PCI architec
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3.4 Boot phase 2 In boot phase 2, t
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As mentioned, there are a lot of di
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3.4.3 LED 518 product documentation
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Figure 3-9 Boot phase 3 /etc/initta
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3.5.2 LED 553 3.5.3 LED c31 3.5.4 L
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3.5.5 pSeries servers A specific LE
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When the system is gracefully shut
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LED Reason/action c31 Define the co
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3. A file system is being mounted b
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3.9.1 Answers 3.10 Exercises The fo
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4.1 Hardware basics RS/6000 and pSe
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The most important fields in the pr
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Figure 4-1 Main diagnostics menu Th
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► Full testing requires that the
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3. Place the CD-ROM into the drive.
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Note: This service aid is only pres
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2. Select Change Show use of an SSA
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LED 299 A LED code of 299 shows tha
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Figure 4-2 Format of the 103 code m
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4.5 Quiz The following assessment q
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4.5.1 Answers 4.6 Exercises The fol
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5.1 Configuring the dump device Pri
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5.2 Starting a system dump A user-i
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A command status screen will be dis
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If the system does not have a key s
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The shconf command is invoked when
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5.4 Increasing the size of the dump
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Setting output device to /dev/rmt0.
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Look at the time of the dump and th
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Failure Causes SOFTWARE PROGRAM Rec
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Using crash, you can examine: ► A
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► ? or help[] Lists all subcomman
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LR: .waitproc+d4 (0000edc4) 2ff3b38
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DSIRR Data Storage Interrupt Reason
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*prevthread:0xe6000000 *nextthread:
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In this example, the VMM return cod
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The snap command syntax is as follo
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Flag Description -t Format Lists ea
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Flag Description -p Device Temporar
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Figure 5-3 Error log case study 2.
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Figure 5-4 Case study Which of the
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5.10.1 Answers 5.11 Exercises The f
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6.1 The error daemon The error logg
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To change the current log file, the
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To process a report from the error
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Flag Description -g Displays the AS
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Flag Description -F FlagList Select
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Probable Causes ERRDEMON STARTED AU
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To display a detailed report of all
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USER ID 0 0=SOFT IPL 1=HALT 2=TIME
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Resource Class: planar Resource Typ
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Flag Description -k ErrorID[,ErrorI
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6.5.1 Setting up an accounting syst
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6.6 The syslogd daemon The syslogd
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Use the following message priority
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3. A system operator accidentally d
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7.1 LVM data The Logical Volume Man
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7.2.1 Data relocation 7.2.2 Backup
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AIX version level Verify that the v
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This example shows that the volume
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This error information displays the
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hdisk0 Available 30-58-00-8,0 16 Bi
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7.4 The AIX JFS 7.4.1 Creating a JF
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7.4.2 Increasing the file system si
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In many cases, restoration of the b
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lv02 jfs 2 2 1 open/syncd /u/testfs
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► Understanding enhanced journale
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512 bytes) to minimize internal fra
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Function JFS2 JFS Compression No Ye
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7.4.10 Disk quota Pseudo file name
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home: blocks in use: 0, limits (sof
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7.5.3 Reducing and removing paging
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Table 7-3 Commonly used flag of the
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7.6.4 The rmlvcopy command The rmlv
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Which of the following commands sho
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8.1 Network interface problems If h
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As you can see, the output shows th
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3. If there is a default route, att
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If you are using the route command
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address of the named server and try
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TOK: access control field = 0, fram
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4. Initiate an iptrace (client, ser
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the nfs_max_threads parameter of th
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Flags Description -s host Records p
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8.6 Quiz Table 8-8 Commonly used fl
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8. Which of the following options w
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9.1 User license problems If it is
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telnet: connect: A remote host did
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9.2.4 Telnet error If when attempti
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user is limited and defined as an A
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9.4.3 A full file system uid=0(root
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9.5.1 Trace hook IDs The events tra
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your trace, the system may be traci
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113 0.004261661 0.001518 unlock: lo
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If the sendmail command encounters
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9.8 Printing Task SMIT fast path Co
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Action or function System V PowerPC
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Switching between subsystems The op
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Flag Description -s Subsystem Speci
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9.10 Quiz Flag Description -O Optio
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6. A user has the ability to ping t
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232 IBM ^ Certification Study Guide
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Figure 10-1 General performance tun
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Display previously captured data Th
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10.1.2 The vmstat command The vmsta
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later). The method used in AIX Vers
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second. Large values indicate a CPU
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kernel routine records the process
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syncd 1 2 2 0 0 0 sh 1 1 1 0 0 0 sl
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The memory columns The memory colum
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The sr column The sr column shows t
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If you want to sort to the sixth co
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► Workload Management Class (-W)
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schedtune limitations The schedtune
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schedtune parameters are reset by t
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Normal files are automatically mapp
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tty: tin tout avg-cpu: % user % sys
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When looking for performance proble
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those that do not. If you are runni
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The netstat -m command The netstat
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spec buf 1 0 0 0 128 128 0 locking
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Late Collision Errors The Late Coll
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The retrans column displays the num
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Figure 10-3 Web-based System Manage
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Superclasses A superclass is a clas
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► Shared subclass: This subclass
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The sequence of attributes within a
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This manual assignment can be done
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This defines three levels of privil
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The class assignment is done by WLM
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Figure 10-8 shows the SMIT panel wh
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Figure 10-10 SMIT panel for rset re
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10.6.1 The dbx command The dbx comm
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Subcommand Description return Conti
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15) phxent_dd [5 entries] 16) kbddd
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10.8 Command summary The following
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10.8.4 The nfsstat command 10.9 Qui
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Page 330 and 331: 11.1 Overview 11.1.1 Terminology 11
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Page 358 and 359: OEM Original Equipment Manufacturer
Page 360 and 361: SPM System Performance Measurement
Page 364 and 365: Other resources These publications
Page 368 and 369: phase1 figure 23 phase2 15, 24, 36
Page 370 and 371: pc.statd 189 daemons shdaemon 73 te
Page 372 and 373: host name resolution telnet login p
Page 374 and 375: N name resolution diagnostic 185 pr
Page 378 and 379: System Resource Controller (SRC) 13
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