AIX QuickSheet

Filesystems

Default rootvg lesystems

hd1 - /home

hd2 - /usr

hd3 - /tmp

hd4 - /

hd5 - Boot logical volume

hd6 - paging space

hd8 - log device

hd9var - /var

hd10opt - /opt

Remove mount point entry

rmfs /mymount

Grow the

and the LV for /mymount(Add -r to remove mount point)/var lesystem by 1 Gig

chfs -a size=+1G /var

Grow the

/var lesystem to 1 Gig

chfs -a size=1G /var

Find the le usage on a lesystem

du -smx /

List lesystems in a

grep-able format

lsfs

Create a log device on

datavg VG

mklv -t jfs2log -y datalog1 datavg 1

Format the log device just created

logform /dev/datalog1

Format the log device associated with the fs on LV datalv1

logform /dev/datalv1

Kernel Tuning

no

is used in the following examples. vmo, no, nfso, ioo, raso, and

schedo

Reset all networking tunables to the default values

all use similar syntax.

no -D

List all networking tunables

(Changed values will be listed)

no -a

Set a tunable temporarily (until reboot)

no -o use isno=1

Set a tunable at next reboot

no -r -o use isno=1

Set current value of tunable as well as reboot

no -p -o use isno=1

List all settings, defaults, min, max, and next boot values

no -L

List all sys0 tunables

lsattr -El sys0

Change the maximum number of user processes to 2048

chdev -l sys0 -a maxuproc=2048

Check to see if SMT is enabled

smtctl

ODM

PdDv, PdAt, PdCn - Prede ned Databases

CuDv, CuAt, CuDep, CuDvDr, CuVPD - Customized Databases

Query CuDv for a speci c item

odmget -q name=hdisk0 CuDv

Query CuDv using the \like" syntax

odmget -q "name like hdisk?" CuDv

Query CuDv using a complex query

odmget -q "name like hdisk? and parent like vscsi?" CuDv

Devices

List all devices on a system

lsdev

Device states are: Unde ned; Supported Device, De ned; Not usable

(once seen), Available; Usable

List all disk devices on a system (Some other devices are: adapter,

driver, logical volume, processor)

lsdev -Cc disk

List all customized (existing) device classes (-P for complete list)

lsdev -C -r class

Remove hdisk5

rmdev -dl hdisk5

Get device address of hdisk1

getconf DISK DEVNAME hdisk1

or bootinfo -o hdisk1

Get the size (in MB) of hdisk1

getconf DISK SIZE hdisk1

or bootinfo -s hdisk1

Find the slot of a PCI Ethernet adapter

lsslot -c pci -l ent0

Find the (virtual) location of an Ethernet adapter

lscfg -l ent1

Find the location codes of all devices in the system

lscfg

List all MPIO paths for hdisk0

lspath -l hdisk0

Find the WWN of the fcs0 HBA adapter

lscfg -vl fcs0 | grep Network

Temporarily change console output to

swcons /console.out

/console.out(Use swcons to change back.)

Tasks

Change port type of (a 2Gb) HBA

(4Gb may use di
erent setting)

rmdev -d -l fcnet0

rmdev -d -l fscsi0

chdev -l fcs0 -a link type=pt2pt

cfgmgr

Mirroring rootvg to hdisk1

extendvg rootvg hdisk1

mirrorvg rootvg

bosboot -ad hdisk0

bosboot -ad hdisk1

bootlist -m normal hdisk0 hdisk1

Mount a CD ROM to /mnt

mount -rv cdrfs /dev/cd0 /mnt

Create a VG, LV, and FS, mirror, and create mirrored LV

mkvg -s 256 -y datavg hdisk1

(PP size is 1/4 Gig)

mklv -t jfs2log -y dataloglv datavg 1

logform /dev/dataloglv

mklv -t jfs2 -y data01lv datavg 8

(2 Gig LV)

crfs -v jfs2 -d data01lv -m /data01 -A yes

extendvg datavg hdisk2

mklvcopy dataloglv 2

(Note use of mirrorvg in next example)

mklvcopy data01lv 2

syncvg -v datavg

lsvg -l datavg

will now list 2 PPs for every LP

mklv -c 2 -t jfs2 -y data02lv datavg 8

(2 Gig LV)

crfs -v jfs2 -d data02lv -m /data02 -A yes

mount -a

Move a VG from hdisk1 to hdisk2

extendvg datavg hdisk2

mirrorvg datavg hdisk2

unmirrorvg datavg hdisk1

reducevg datavg hdisk1

Find the free space on PV hdisk1

lspv hdisk1

(Look for \FREE PPs")

Users and Groups

List all settings for root user in

grepable format

lsuser -f root

List

just the user names

lsuser -a id ALL | sed 's/ id.*$//'

Find the fsize value for user wfavorit

lsuser -a fsize wfavorit

Change the fsize value for user wfavorit

chuser fsize=-1 wfavorit

Networking

(

The examples here assume that the default TCP/IP con gurationrc.net) method is used. If the alternate method of using rc.bsdnet

is used then some of these examples may not apply.

Determine if

lsattr -El inet0 -a bootup option

rc.bsdnet is used over rc.net

TCP/IP related daemon startup script

/etc/rc.tcpip

To view the route table

netstat -r

To view the route table from the ODM DB

lsattr -EHl inet0 -a route

Temporarily add a default route

route add default 192.168.1.1

Temporarily add an address to an interface

ifconfig en0 192.168.1.2 netmask 255.255.255.0

Temporarily add an alias to an interface

ifconfig en0 192.168.1.3 netmask 255.255.255.0 alias

To permanently add an IP address to the en1 interface

chdev -l en1 -a netaddr=192.168.1.1 -a netmask=0xffffff00

Permanently add an alias to an interface

chdev -l en0 -a alias4=192.168.1.3,255.255.255.0

Remove a permanently added alias from an interface

chdev -l en0 -a delalias4=192.168.1.3,255.255.255.0

List ODM (next boot) IP con guration for interface

lsattr -El en0

Permanently set the hostname

chdev -l inet0 -a hostname=www.tablesace.net

Turn on routing by putting this in

no -o ipforwarding=1

rc.net

List networking devices

lsdev -Cc tcpip

List Network Interfaces

lsdev -Cc if

List attributes of inet0

lsattr -Ehl inet0

List (physical layer) attributes of ent0

lsattr -El ent0

List (networking layer) attributes of en0

lsattr -El en0

Speed is found through the ent

X device

lsattr -El ent0 -a media speed

Set the ent0 link to Gig full duplex

(

Auto Negotiation is another option)

chdev -l ent0 -a media speed=1000 Full Duplex -P

Turn o
Interface Speci c Network Options

no -p -o use isno=0

Get (long) statistics for the ent0 device (no -d is shorter)

entstat -d ent0

List all open, and in use TCP and UDP ports

netstat -anf inet

List all LISTENing TCP ports

netstat -na | grep LISTEN

Remove all TCP/IP con guration from a host

rmtcpip

IP packets can be captured using

Error Logging

Error logging is provided through:

Display the contents of the boot log

alog, errlog and syslog.

alog -o -t boot

Display the contents of the console log

alog -o -t console

List all log types that

alog knows

alog -L

Send a message to errlog

errlogger "Your message here"

Display the contents of the system error log

errpt

(Add -a or -A for varying levels of verbosity)

tions. S is software and H is hardware. Error types are (P)ermanent,

(T)emporary, (I)nformational, or (U)nknown. Error classes are

(H)ardware, (S)oftware, (O)perator, or (U)ndetermined.

Clear all errors up until

Errors listed from errpt can be limited by the -d S or -d H op-x days ago.

errclear

x

List info on error ID

FE2DEE00 (IDENTIFIER column in errpt output)

errpt -aDj FE2DEE00

Put a \tail" on the error log

errpt -c

List all errors that happened today

errpt -s `date +%m%d0000%y`

To list all errors on hdisk0

errpt -N hdisk0

To list details about the error log

/usr/lib/errdemon -l

To change the size of the error log to 2 MB

/usr/lib/errdemon -s 2097152

syslog.conf

line to send all messages to log le

*.debug /var/log/messages

syslog.conf

line to send all messages to error log

*.debug errlog

Error log messages can be redirected to the syslog using the errnotify

ODM class.

smitty FastPaths

Find a smitty FastPath by walking through the smitty screens to get

to the screen you wish. Then Hit F8. The dialog will tell you what

FastPath will get you to that screen. (F3 closes the dialog.)

lvm - LVM Menu

mkvg - Screen to create a VG

con gtcp - TCP/IP Con guration

eadap - Ethernet adapter section

fcsdd - Fibre Channel adapter section

chgsys - Change / Show characteristics of OS

users - Manage users (including ulimits)

devdrpci - PCI Hot Plug manger

etherchannel - EtherChannel / Port Aggregation

System Resource Controller

Start the xntpd service

startsrc -s xntpd

Stop the NFS related services

stopsrc -g nfs

Refresh the named service

refresh -s named

List all registered services on the system

lssrc -a

Show status of ctrmc subsystem

lssrc -l -s ctrmc

Working with Packages

List all les in bos.games leset.

lslpp -f bos.games

Find out what leset \fortune" belongs to.

lslpp -w /usr/games/fortune

List packages that are above the current OS level

oslevel -g

Find packages below a speci ed ML

oslevel -rl 5300-05

List recommended MLs

oslevel -rq

List installed MLs

instfix -i | grep AIX ML

List all lesets

lslpp -L

List all lesets in a

grepable or awkable format

lslpp -Lc

Find the package that contains the lemon utility

which fileset filemon

Install the database (from CD) for

installp -ac -d /dev/cd0 bos.content list

which fileset

Create a mksysb backup of the rootvg volume group

mksysb -i /mnt/server1.mksysb.`date +%m%d%y`

Cleanup after a failed install

installp -C

LVM

Put a PVID on a disk

chdev -l hdisk1 -a pv=yes

Remove a PVID from a disk

chdev -l hdisk1 -a pv=clear

List all PVs in a system (along) with VG membership

lspv

Create a VG called datavg using hdisk1 using 64 Meg PPs

mkvg -y datavg -s 64 hdisk1

Create a LV on (previous) datavg that is 1 Gig in size

mklv -t jfs2 -y datalv datavg 16

List all LVs on the datavg VG

lsvg -l datavg

List all PVs in the datavg VG

lsvg -p datavg

Take the datavg VG o ine

varyoffvg datavg

Remove the datavg VG from the ODM

exportvg datavg

Import the VG on hdisk5 as datavg

importvg -y datavg hdisk5

Vary-on the new datavg VG (can use

importvg -n)

varyonvg datavg

List all VGs (known to the ODM)

lsvg

List all VGs that are on line

lsvg -o

Check to see if underlying disk in datavg has grown in size

chvg -g datavg

Move a LV from one PV to another

migratepv -l datalv01 hdisk4 hdisk5

Delete a VG by removing all PVs with the

reducevg command.

reducevg hdisk3

(-d removes any LVs that may be on that PV)

Memory / Swap le

List size, summary, and paging activity by paging space

lsps -a

List summary of all paging space

lsps -s

List the total amount of physical RAM in system

lsattr -El sys0 -a realmem

Create a new paging device on rootvg of 64 PPs

mkps -a -s 64 -n rootvg

topas

Options

Make topas look like

topas -P

top

View statistics from other partitions

topas -C

View statistics for disk I/O

topas -D

Show statistics related to micro-partitions in Power5 environment

topas -L

All of the above commands are availible from within

topas

Performance Monitoring

Use

s0 entries for the best a nity and lesser a nity in the higher elds.

Get verbose disk stats for hdisk0 every 2 sec

mpstat -d to determine processor a nity on a system. Look for

iostat -D hdisk0 2

Get extended vmstat info every 2 seconds

while [ 1 ]; do vmstat -vs; sleep 2; clear; done

Get running CPU stats for system

mpstat 1

Get time based summary totals of network usage by process

netpmon

to start statistics gathering, trcstop to nish and summarize.

Getting info about the system

Find the version of AIX that is running

oslevel

List all attributes of system

getconf -a

Find the type of kernel loaded (use -a to get all options)

getconf KERNEL BITMODE

bootinfo and getconf can return much of the same information, getconf

returns more and has the

Find the level of rmware on a system

grepable -a option.

invscout

List all attributes for the kernel \device"

lsattr -El sys0

Print a \dump" of system information

prtconf

Display Error Codes

214,2C5,2C6,2C7,302,303,305 - Memory errors

152,287,289 - Power supply failure

447 - An error has occurred on an adapter

521 - init process has failed

551,552,554,555,556,557 - Corrupt LVM, rootvg, or JFS log

553 - inittab or /etc/environment corrupt

552,554,556 - Corrupt lesystem superblock

521 through 539 -

532,558 - Out of memory during boot process

518 - Failed to mount

cfgmgr (and ODM) related errors/var or /usr

615 - Failed to con g paging device

More information is availible in the \Diagnostic Information for Multiple

Bus Systems" manual

iptrace / ipreport or tcpdump