AIX Patch Upgradation

AIX Patch Upgradation

• Take TSM backup for all File systems on AIX servers


• Take mksysb backups .


• Take all Configuration backup .


• Take snapshot of HACMP configuration: smitty cm_cfg_snap.


• Upload all downloaded file sets from IBM web site .


• Remove the second disk from the mirror: # unmirrorvg rootvg hdisk1


• Check if there are any LVs left on the second disk: # lspv -l hdisk1


• If exists migrate the remaining LVs to the first disk: # migratepv hdisk1 hdisk0


• Remove the second disk from the root VG, to do this need to clear the boot record of the second PV: # chpv -c hdisk1


• Check if the bootlist is first set of the disk with the current rootvg, and on second place of the disk with the alt_disk_install: # bootlist -m normal hdisk0 hdisk1


• Remove the second PV from rootvg # reducevg rootvg hdisk1


• Run alternate disk installation: # nohup alt_disk_install -B -C hdisk1 &


• After successful end of above operation test alternate disk installation (using wakeup key) # alt_disk_install -W hdisk1


• List the content of PV # lspv -l hdisk1


• Once all is fine, start the installation with the following commands “sleep” # alt_disk_install –S


• Run the preview using smitty update_all and check the required /usr file system space and increase it.


• Add new boot image to the first PV to have “fresh” boot record: # bosboot -ad /dev/hdisk0


• Stop the cluster services using smitty cl_stop with option both[ Note: check the cluster log in /tmp/hacmp.out and the servers login with the boot IP.]


• Before start installation should commit all the softwares, installed on the server to make easy roll-back in case of any problems during installation. # smit commit or # installp -c all


• Update all the software from TL and Service pack # smit update_all


• Set only apply package, but not commit and keep the copy of replaced files.


• Reboot both the servers


• Start the cluster using smitty cl_start. Check the logs in /tmp/hacmp.out
  Roll Back Plan


• If any problem occurs change the boot disk: bootlist –m normal –o


• Reboot the server.


• Start the cluster services