This is a script to interactively change WWPNs on adapters in an IBM POWER\/Power systems LPAR profile. This is useful if you have to re-create adapters or even whole profiles as the HMC GUI does not allow you to set or change WWPNs, and the HMC command line is not exactly elegant.<\/p>\n\n\n\n
# Copyright AIXperts Consultancy ltd, Henrik Morsing - November 2022\n\necho\necho \"You are about to write new WWPNs to the adapters for this profile. Please backup the profile first\"\necho\n\n# Prompt for hmc and host\n\nprintf \"Please enter HMC to connect to: \"; read hmc\nprintf \"Please enter host to change: \"; read host\necho\n\n# Find LPAR and system names\nwhile read sys\ndo\n #echo \"Checking system \"${sys}\n lpar=\"$(echo $(ssh -n ${hmc} lssyscfg -r lpar -m ${sys} -F name) | tr ' ' '\\n' | grep ${host})\"\n if [[ ${lpar} != \"\" ]]\n then\n #echo \"Break-out\"\n export system=${sys}\n break\n fi\ndone <<< \"$(ssh ${hmc} 'lssyscfg -r sys -F name')\"\n\n# Find profile name\nprofile_name=\"$(echo $(ssh ${hmc} lssyscfg -r prof -m ${system} --filter \\\"lpar_names=${lpar}\\\" -F name) | cut -f1 -d' ')\"\n\n# Find WWPNs\ntypeset -A value # For WWPNs\ntypeset -i f=0 # Counter for adapter\ntypeset -i field=1 # Counter for adapter\nvalue[${f}]=\"kjfhkes\" # Inital, non-empty value\n\n# Define some arrays to read output values into\ntypeset -A adapter_id\ntypeset -A rlpar_id\ntypeset -A rlpar_name\ntypeset -A rslot_no\n\n# Let's fetch the output from the HMC\ncmd_out=\"$(ssh ${hmc} lssyscfg -m ${system} -r prof --filter \\\"lpar_names=${lpar},profile_names=${profile_name}\\\" -F virtual_fc_adapters)\"\n\n# Loop to read every adapter output\nwhile [[ -n ${value[${f}]} ]]\ndo\n f+=1\n # Read values for each adapter in turn into the arrays\n echo ${cmd_out} | tr -d '\"' | cut -d, -f${field},$(( ${field}+1 )) | tr '\/' ' '| read adapter_id[${f}] client rlpar_id[${f}] rlpar_name[${f}] rslot_no[${f}] value[${f}] req\n\n field+=2\ndone\n\n# Before starting this loop, start building up a command to submit\ncmd=\"ssh ${hmc} chsyscfg -r prof -m ${system} --force -i \\\"lpar_name=${lpar}, name=${profile_name}, \\\\\\\"virtual_fc_adapters=\"\n\nf=1 # Adapter counter\n\nwhile [[ -n ${value[${f}]} ]]\ndo\n printf \"Enter new WWPN or hit <ENTER> to keep WWPN [\"${value[${f}]}\"]: \"; read wwpns_input\n\n if [[ \"${wwpns_input}\" == \"\" ]]\n then\n\n cmd_build=${cmd}\\\\\\\"\\\\\\\"${adapter_id[${f}]}\/client\/${rlpar_id[${f}]}\/${rlpar_name[${f}]}\/${rslot_no[${f}]}\/${value[${f}]}\/0\\\\\\\"\\\\\\\",\n cmd=${cmd_build}\n\n # Increment f\n f+=1\n\n elif [[ \"${wwpns_input}\" =~ [0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f],[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f] ]]\n then\n value[${f}]=${wwpns_input}\n\n cmd_build=${cmd}\\\\\\\"\\\\\\\"${adapter_id[${f}]}\/client\/${rlpar_id[${f}]}\/${rlpar_name[${f}]}\/${rslot_no[${f}]}\/${value[${f}]}\/0\\\\\\\"\\\\\\\",\n cmd=${cmd_build}\n\n # Increment f\n f+=1\n\n else\n echo \"Invalid entry, please try again\"\n fi\ndone\n\n# Now, tidy-up end of command\ncmd_end=$(echo ${cmd_build} | sed 's\/,$\/\/') # Remove trailing comma\ncmd_complete=${cmd_end}\\\\\\\"\\\"\\ # Finish off quites\n\necho\necho \"Running: \"${cmd_complete}\n\n${cmd_complete}\n\nexit 0\n<\/code><\/pre>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
This is a script to interactively change WWPNs on adapters in an IBM POWER\/Power systems LPAR profile. This is useful if you have to re-create adapters or even whole profiles as the HMC GUI does not allow you to set … Continue reading