Thursday, 5 July 2012

Commands never to forget by AIX admin.

Commands never to forget by AIX admin.

To apply a TL while you are doing clonning

# alt_disk_copy -I acNgXY -P all -b update_all -l /fixpackfs/AIX_fix_packs/5300-08-10-1015 -d hdisk1


smitty alt_mksysb To run an alternate mksysb
smitty alt_clone To run an alternate rootvg on disk


# alt_disk_copy -d hdisk1 To clone a rootvg on hdisk1
# alt_disk_copy -e /etc/exclude.rootvg -d hdisk1 To clone a rootvg on hdisk1 with exclude some of the files
# alt_rootvg_op -X altinst_rootvg To de-clone a rootvg
# alt_rootvg_op -q -d hdisk0 To determine the boot disk for a volume group with multiple PV
# alt_rootvg_op -v alt_disk_530 -d hdisk2 To modify an alt_disk_install volume group name
# alt_rootvg_op -W -d hdisk0 To "wake up" an original rootvg after booting from the new alternate disk
# alt_rootvg_op -S -t To "put to sleep" a volume group that had experienced a "wake-up"
# alt_rootvg_op -d "hdisk3 hdisk4" -b update_all -l /updates To update the alternate rootvg to the latest fileset levels available in /updates and install them into the alternate root volume group


To create a bff image# gencopy -X -b "-qv" -d /fixpackfs/AIX_fix_packs/5300-09-00-0846 -t /usr/sys/inst.images -f File 2>&1
OR
smitty bffcreate


# lslpp –l To see what maintenance level your filesets
# lslpp –f To list the individual files that are installed with a particular fileset
# lslpp -h bos.sysmgt.trace To list the installation and update history of filesets
# instfix -T -d /dev/cd0 To list fixes that are on a CD-ROM
# instfix -ik IY73748 To determine if APAR IX75893 is installed
# instfix -aik IY73748 To examine information about APAR IX75893 and what it does
# instfix -i | grep ML To list what maintenance levels have been installed
# instfix -k IY73748 -d /dev/cd0 To install APAR IY73748 from /dev/cd0


smitty show_apar_stat Show the apar statistic
smitty update_by_fix. To install the fixes using SMIT
smitty update_all To install all new fixes that are available from IBM


smitty assist To call the Configuration Assistant
smitty alt_install To create alternate installation disk
smitty alt_clone To clone your rootvg to a new disk
smitty alt_mksysb To create the alternate mksysb system




# lppchk -c X11.adt.include Check to ensure all fileset are installed correctly

# lppchk -l X11.adt.include Verifies the symbolic link for filesets
# lppchk –v How to verify if all filesets are correctly installed
# mkitab "xcmd:2:respawn:find / -type f > /dev/null 2>&1" Add a record named xcmd on the /etc/inittab
# lsitab xcmd Show the new record with the lsitab
# rmitab xcmd To delete this record from the /etc/inittab file
# chitab "xcmd:2:once:find / -type f > /dev/null 2>&1" Change the action field on the record xcmd from respawn to once


# bootlist -m normal –o To display a boot list
# bootlist -m normal cd0 hdisk0 To make changes to your normal boot list
# bootlist -m normal -f filename To make changes to your normal boot list using file


# cat /etc/.init.state Identifying the current run level


# odmget -q "type LIKE lv*" PdDv To interrogate ODM PdDv class about all objects
# odmget lpp|head -30 To interrogate the lpp class


Configuration Commands

# mknfs –N To start the NFS daemons immediately
#startsrc -g nfs System Resource Controller to start


smitty mknfsexp To export the directory
smitty rmnfsexp Un-export an NFS directory
smitty mknfsmnt To establish predefined mounts through SMIT
smitty chnfsexp Changing an exported file system


# showmount -e It shows what is exported by current server
# showmount -e servername It shows what is exported by servername
# /usr/sbin/exportfs –a Tells the kernel to reread the exportfs file, that have edited
# exportfs -i /dirname Exporting an NFS directory temporarily
# exportfs -u /dirname Un-export the file system on the server
# umount /backup To unmount an explicitly or automatically mounted NFS


# cat /etc/netsvc.conf The default hostname resolution order specification


smit mkroute To add a route to the private network through the gateway
smit mktcpip To change or set IP addresses


# lsdev -Cc if To identify network interfaces on your server
# ifconfig –a To identify all network interfaces configured on your server
# ifconfig Interface To get information about one specific network interface
# ifconfig tr0 up To activate a network interface using ifconfig
# ifconfig tr0 10.1.2.3 netmask 255.255.255.0 up To activate a network interface and assign IP and netmask
# ifconfig Interface down To deactivate an interface
# ifconfig tr0 delete To delete the network address from tr0
# ifconfig tr0 detach To remove the interface tr0 from the network interface list
# ifconfig tr0 10.1.2.3 mask 255.255.255.0 alias To bind the IP address of 10.1.2.3 to tr0 as a alias
# ifconfig tr0 10.1.2.3 mask 255.255.255.0 delete When this alias is no longer required, you can remove it
# ifconfig en0 mtu 2000 To change the MTU size of tr1


Adding network adapter# lscfg |grep -i adapter network adapters on your system
# lsdev -Cc if interfaces are already on the system
Shut down and power off the system
Physically install the new network adapter
Power on the system in normal mode
# cfgmgr


Removing network adapter# ifconfig Interface down Deactivate all network interface definitions for the network adapter
# ifconfig Interface detach Remove (detach) all network interface definitions
# rmdev -l Interface –d Delete the network interface definitions
# rmdev -l Adapter –d Delete the network adapter definition
# shutdown -F now Shutdown the system
Physically remove the network adapter
Power on the system


Smitty chgenet To change the media speed for an Ethernet adapter


# pg /etc/swapspaces All paging related information is listed in this file
# lsps –a To display all info about paging space
# lsps –s To see the total paging space used by system
# chps -s 3 hd6 To increase the size of hd6
# chps -d 1 hd6 To decrease the size of hd6
# migratepv -l hd6 hdisk0 hdisk1 To move the default (hd6) paging space from hdisk0 to hdisk1
# swapoff DeviceName To deactivate paging space
# swapon DeviceName To activate the paging space
# rmps paging03 To removed paging space


Reducing the size of hd6 paging space: this is applicable only on below version 5L# mkps -a -n -s 30 rootvg hdisk0 Create a temporary paging space on rootvg
# chps -a n hd6 to deactivate the hd6 paging spaces


Change the paging space entry in the /sbin/rc.boot from swapon /dev/hd6 to swapon /dev/paging00


# sysdumpdev –l to check the primary dump device designation
# sysdumpdev -P -p /dev/paging00 change it to some other paging space
# bosboot -d /dev/hdisk0 –a Create a bootable image with the bosbootcommand
# shutdown –r shutdown the operating system and reboot
# rmps hd6 After the system reboots, remove the hd6 paging space
# mklv -t paging -y hd6 rootvg 30 Create a new paging space LV of the size 120 MB for the hd6
# sysdumpdev -P -p /dev/hd6 Change the primary dump device designation


Change the paging space entry in the /sbin/rc.boot file from swapon /dev/paging00 to swapon /dev/hd6


# bosboot -d /dev/hdisk0 –a Create a bootable image with the bosbootcommand
# chps -a y hd6 to make the new hd6 paging space automatically activate when reboot
# shutdown –r Reboot the system
# rmps paging00 After the system reboots, remove the temporary paging space


# lsdev -P –H To list all devices in the Predefined Devices object class
# lsdev -C –H To list all the devices in the Customized Devices object class
# lsdev -C -c adapter -S a To list the adapters that are in the Available state
# lsdev -P -r class To list all the classes of supported devices on your system
# lsdev -C -c disk To show the disk drives on your system


# lscfg To display the system configuration
# lscfg -v -p -l rmt0 To display the VPD for about rmt0
# lscfg -v -p -l ent2 To obtain the physical location and firmware version of eth0


# lsattr -l rmt0 –D To list the default attribute values for the tape device rmt0
# lsattr -l rmt0 -E To list the current attribute values for the tape device rmt0
# lsattr -l scsi0 -a bus_intr_lvl –E To list the current value of the bus_intr_lvl attribute
# lsattr -l scsi0 -a bus_intr_lvl –D To list the default value of the bus_intr_lvl attribute


# chdev -l ent0 -a media_speed=100_Full_Duplex -P Change the media_speed forcefully to 100_Full_Duplex
# chdev -l ent0 -a media_speed=Auto_Negotiation Change to auto negotiate for speed duplex


# mkdev -l rmt0 To make the predefined rmt0 tape device available to use


# rmdev -l rmt0 To make available rmt0 to defined state
# rmdev -dl rmt0 To unload the device configuration from the ODM
# chdev -l rmt0 -a attr=value To change the attribute of the rmt0 device

smitty devices Smit screen to configure devices
smitty chdev Smit screen to change device attribute
smitty rmdev Smit screen to remove the device configuration from ODM


# lssrc -a List all services and their status
# startsrc -g Start network service group
# startsrc -s Start network service subsystem
# stopsrc -g Stop network service group


# /usr/lib/errdemon To start the error daemon
# /usr/lib/errdemon –l To determine the path to your system's error log file
# /usr/lib/errdemon -s 2000000 To change the maximum size of the error log file
# /usr/lib/errdemon -B 16384 To change the size of the error log device driver's


# errpt To display a complete summary report of the errors
# errpt –a To display a detailed report of all the errors encountered
# errpt -a -j E19E094F To display a detailed report of all errors logged error identifier E19E094F
# errpt -a -s 0828093001 Displaying the errors by time reference
# errlogger Testing use of errlogger command To log operator messages to the system error log
# errclear 0 Deletes all entries from the error log
# errclear -d S 0 To delete all entries in the error log classified as software errors
# errinstall Installs messages in the error logging message sets
# errupdate Updates the Error Record Template repository


# bindprocessor –q Query the available processors
# smtctl -m off -w now To turn off simultaneous multithreading immediately
# smtctl -m on -w boot To turn on simultaneous multithreading after the next reboot


# chdev -l hdisk7 -a pv=yes Assigning a PVID to a physical volume
# chdev -l hdisk7 -a pv=clear Clears the PVID from the physical volume


Reconfiguring a system from a 32-bit to a 64-bit kernel
To identify the type of system hardware you have, either 32-bit or 64-bit, execute the bootinfo -ycommand. If the command returns a 32, you cannot use the 64-bit kernel.64-bit kernel information stored in the /usr/lib/boot.
unix_mp 32-bit kernel for multiprocessor systems
unix_64 64-bit kernel for 64-bit processor systems


# ln -sf /usr/lib/boot/unix_64 /unix
# ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix
# bosboot -ad /dev/ipldevice
bosboot: Boot image is 23137 512 byte blocks.
# shutdown -r
# ls -al /unix
lrwxrwxrwx 1 root system 21 Nov 11 11:30 /unix -> /usr/lib/boot/unix_64


Logical Volume Management Commands

# lspv hdisk2 To display detailed information about a physical volume
# lspv -l hdisk0 To display the names of all the lv that have at least one partition on pv
# lspv -p hdisk0 To display the allocation of PPs to logical volumes
# lspv -M hdisk0|more To display the layout of a physical volume
# chpv -an hdisk2 Disabled the ability to allocate new free physical partitions
# chpv -ay hdisk2 To turn on the allocation permission
# chpv -vr hdisk3 Makes hdisk3 unavailable
# chpv -va hdisk3 Makes hdisk3 available again
# chpv -c hdisk1 To clear the boot record located on physical volume hdisk1
# chpv -hy hdisk3 To define hdisk3 as a hot spare
#chpv -hn hdisk3 To remove hdisk3 from the hot spare pool
# migratepv hdisk1 hdisk5 Migrates the data from hdisk1 to hdisk5
# migratelp testlv/1/2 hdisk5/123 Migrates the data from the second copy of the logical partition number 1 of logical volume to hdisk5 on physical partition 123.
# lquerypv -M hdisk0 To find the LTG size for a physical disk


# lsvg To display all volume groups known to a system
# lsvg –o To display all active volume groups
# mkvg -y vg1 -s64 -V99 hdisk4 Creating an original volume group
# mkvg -B -y vg2 -s 128 -f -n -V 101 hdisk6 Creating a big volume group
# mkvg -S -y testvg -s 1 -f hdisk3 hdisk4 hdisk5 Creating a scalable volume group
# lsvg testvg To display details about a specific volume group
# lsvg -l rootvg To display logical volumes contained in a volume group
# lsvg -p test1vg To display all physical volumes contained in a volume group
# chvg -ay newvg Testvg to be activated automatically the next time the system is restarted
# chvg -an newvg Not be activated automatically next time the system is restarted
# chvg -Qn testvg To turn off the quorum
# chvg -Qy testvg To turn on the quorum
# chvg -hn test1vg Changes the hot spare policy of the volume group
# chvg -sy test1vg Changing synchronization policy of a volume group
# chvg -hy test1vg Changes the hot spare policy of the volume group
# chvg -hn test1vg Changes the hot spare policy of the volume group to no
# chvg -t 16 testvg Change the maximum number of physical partitions per physical volume
# chvg -G db2vg Changing a volume group format
# chvg -L 128 testvg Change the LTG size for the testvg volume group
# chvg -P 2048 testvg Changing the maximum number of physical partitions
# chvg -v 4096 testvg Changing the maximum number of logical volumes
# chvg –u Remove the lock of volume group
# extendvg test1vg hdisk7 Extend a volume group with hdisk7
# extendvg -f test1vg hdisk4 Extend a volume group with hdisk4 forcefully
# reducevg testvg hdisk7 Reduce volume group with hdisk7
# reducevg -d testvg hdisk7 Reduce volume group with hdisk7 forcefully
# synclvodm testvg To synchronize ODM to contain the latest LVM information for VG
# exportvg testvg To export the volume group testvg
# importvg -y testvg hdisk7 Import volume group testvg using hdisk7
# varyoffvg testvg Varyoff volume group
# varyonvg testvg Varyon volume group
# syncvg -p hdisk4 hdisk5 To synchronize the copies located on pv hdisk4 and hdisk5
# syncvg -v testvg To synchronize the all physical partitions from volume group testvg
# mirrorvg rootvg To mirror a rootvg on another disk


Mirroring a rootvg

# bootinfo –s hdisk1 To check the size of disk
# bootinfo –s hdisk0 To check the size of disk
# extendvg rootvg hdisk1 To add a new disk to rootvg
# Mirrorvg rootvg hdisk1 To mirror a rootvg on hdisk1
# bosboot –ad /dev/hdisk1 To create boot logical volume on hdisk1
# bootlist –m normal hdisk0 hdisk1 To set the bootlist


# splitvg -y newvg -c 1 test1vg To split a volume group
# joinvg test1vg To rejoin the two copies of the volume group test1vg


# lslv lv1 To display details about a specific logical volume
# lslv -l lv1 Displays a LV on which disk and In Band policies
# lslv -m lv1 To display LPs and PPs number
# mklv -y lv3 -t jfs2 -a im test1vg 10 hdisk5 Create a logical volume
# extendlv lv05 3 Extend a logical volume with 3 PP
# rmlv lv7 Remove a logical volume
# rmlv -f lv1 Remove a logical volume without confirming
# chlv -x 1000 lv1 Sets the maximum number of logical partitions allocated to LV


# cplv -v dumpvg -y lv8 lv1 To copy LV lv1 to the dumpvg volume group under the name of lv8
# mklvcopy -k lv1 3 hdisk7 & To create and synchronize extra copies of logical partitions
# splitlvcopy -y copylv testlv 2
# rmlvcopy testlv 2 hdisk6

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