AIX 5L Problem Determination - IBM Redbooks

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host name resolution telnet login problem 205 how to recreate BLV 19 hung process tracing 211 I I/O pacing 260 IAR 88 ifconfig 178 importvg command 138, 141, 171 importvg problems disk change 142 shared disk environment 143 increasing the file system size 152 information collecting information from the user 8 collection information about the system 10 questions you should ask 9 i-node 150 inode table 84 installing online manuals 326 installp 309–310, 313 instfix 313, 315 internal fragmentation 159 invalid dump 80 iostat 260 the %tm_act column 262 the CPU columns 261 the disks column 262 the Drive reports 261 the Kb_read column 263 the Kb_wrtn column 263 the Kbps column 262 the tps column 262 the TTY columns 260 ipforwarding 185 ipl_varyon 24 ipreport command 33 iptrace 186 iptrace command 33 J JFS bigfile file system 151 creating file system 150 fixing bad superblock 153 fsck command 152 increasing the file system size 152 i-node 150 removing file system 155 unmount problems 154 verification and recovery 152 JFS file system 150 K kdb 296 kernel address 90 kernel description 84 kernel extension 90 kernel panic 95 kernel parameters adjusting number of processes per user 207 kernel stack traceback 84 kernel trap 95 L LED 58 LED codes 100 - 195 16, 58 200 19, 57 200 - 2E7 16 201 19 221 19 221 - 229 19 223 - 229 19 225 - 229 19 233 - 235 19 299 19, 58 511 23 518 24, 28 548 23 551 26 552 24, 26 553 30, 32 554 24, 26 555 24, 26 556 24, 26 557 24, 26 581 32 721 19 888 58 102 58 103 59–60 105 59 c31 32 350 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques
common MCA LED code table 19 common MCA LED codes 58 MCA POST LED code table 37 phase2 LED code table 37 phase3 LED code table 37 LEDs E1F1 52 license problems 202 locked volume group 139 logform 26 logical volume mirrored copy with mklvcopy 148 stale LV 148 logical volume manager 258 AIX version level 142 data 138 logical volumes 139 physical volume 138 volume group 138 importvg 141 problems 137 VGDA 138 VGID 139 VGSA 139 logical volumes data 139 LVCB 139 LVID 139 login problems with full file system 210 problems with telnet 203 problems with user license 202 low-water mark 260 LPP 308 lppchk 309, 314 lpstat command 220 lquerypv command 83 LR 88 lsattr 46, 179, 271 tx_que_size 271 lscfg 44 lsdev 44, 178 lsfs 157 lsjfs command 151 lslicense command 202, 225 lslpp 310, 315 lsps command 76 lspv command 142 lsrset command 290 lssrc 183 lssrc command 204, 225 lsvg command 145, 169 LVCB - logical volume control block 139 rebuild 141 LVDD 146 LVID - logical volume identifier 139 LVM 258 fragmentation 258 LVM problem determination 139 M magic number 26 mail 217 mail.debug 217 maintenance 16 maintenance level bundle 311 maintenance mode 47 manual assignment (WLM) 283 map pseudo file 163 maxfree 250 maxperm 250 maxpgahead 259 maxuproc 208 mbufs 268 MCA 15 BIST 14–15 bootlist 16 common MCA LED code table 19 LED codes 100 - 195 16 LED codes 200 - 2E7 16 POST 14–15 memory bound 246 mergedev 25 microcode download 52 migratepv command 53 minfree 248 minperm 250 minpgahead 259 mirrored environment 144 mkclass command 283 mkfs 157 mklvcopy command 148 mksysb tape 47 monacct 128 mount 191 mountd 190 MST 87 multiboot 21 Index 351
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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
Page 322 and 323: 10.8 Command summary The following
Page 324 and 325: 10.8.4 The nfsstat command 10.9 Qui
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Page 328 and 329: 306 IBM ^ Certification Study Guide
Page 330 and 331: 11.1 Overview 11.1.1 Terminology 11
Page 332 and 333: Note: Before installing a new set o
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Page 336 and 337: ► To install all filesets associa
Page 338 and 339: Table 11-2 Commonly used flags of t
Page 340 and 341: 11.5 Quiz Flag Description -f Check
Page 344 and 345: - A Web server The browser must be
Page 346 and 347: Figure 12-2 HTTP filesets If you ar
Page 348 and 349: - Remote computer Type the remote d
Page 350 and 351: Figure 12-4 Documentation Library S
Page 354 and 355: CISPR International Special Committ
Page 356 and 357: I/O Input/Output I 2 C Inter Integr
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 374 and 375: N name resolution diagnostic 185 pr
Page 376 and 377: ecent CPU usage 241 recovering an i
Page 378 and 379: System Resource Controller (SRC) 13
Page 384: IBM Certification Study Guide - AIX
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