Class: Chef::Knife::LparDelete

Inherits:
Chef::Knife show all
Includes:
LparBase
Defined in:
lib/chef/knife/lpar_delete.rb

Instance Method Summary collapse

Methods included from LparBase

#get_password, #print_with_output, #run_remote_command

Instance Method Details

#delete_lpar ⇒ Object 



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# File 'lib/chef/knife/lpar_delete.rb', line 73

def delete_lpar
  Net::SSH.start(@name_args[0], "hscroot", :password => @password) do |ssh|
    # some background checks

    # check for existing lpar with name
    ui.info "Verifying #{config[:name]} exists"
    command = "lssyscfg -m #{config[:virtual_server]} -F name -r lpar --filter \"lpar_names=#{config[:name]}\""
    output = run_remote_command(ssh, command)
    unless output.eql? config[:name]
      ui.fatal output
      Kernel.exit(1)
    end

    # Check to see if it's running
    ui.info "Verifying #{config[:name]} is not running"
    command = "lssyscfg -m #{config[:virtual_server]} -F state -r lpar --filter \"lpar_names=#{config[:name]}\""
    output = run_remote_command(ssh, command)
    unless output.eql? "Not Activated"
      ui.fatal output
      Kernel.exit(1)
    end

    # first let's find the host mapping
    ui.info "Searching for host mapping"
    command = "lssyscfg -m #{config[:virtual_server]} --filter \"lpar_names=#{config[:name]}\" -F lpar_id -r lpar"
    output = run_remote_command(ssh, command)
    # and of course it doesn't match, 0 based vs 1 based counting
    vhost = output.to_i - 1
    vhost_name = "vhost#{vhost}"
    print_with_output("Found host id of #{output} - mapping to #{vhost_name}", nil)

    # mapping for the drive
    ui.info "Searching for vscsi mapping"
    command = "lssyscfg -m #{config[:virtual_server]} -r prof --filter \"lpar_names=#{config[:name]}\" -F virtual_scsi_adapters"
    output = run_remote_command(ssh, command)
    vscsi_id = output.match('.*\/.*\/.*\/.*\/(.*)\/.*')[1]
    print_with_output("Found vscsi mapping #{vscsi_id}", output)

    # find the mapping for the vopt
    ui.info "Searching for vtopt mapping"
    command = "viosvrcmd -m #{config[:virtual_server]} -p #{config[:vios]} -c \"lsmap -vadapter #{vhost_name} -type file_opt -field vtd -fmt \\\":\\\"\""
    vtopt_id = run_remote_command(ssh, command)
    print_with_output("Found vtopt mapping #{vtopt_id}", output)

    # find lv mapping
    ui.info "Searching for logical volume mapping"
    command = "viosvrcmd -m #{config[:virtual_server]} -p #{config[:vios]} -c \"lsmap -vadapter #{vhost_name} -type lv -field vtd -fmt \\\":\\\"\""
    lv_id = run_remote_command(ssh, command)
    print_with_output("Found lv mapping #{lv_id}", output)

    # find lv backing device
    ui.info "Searching for lv backing device"
    command = "viosvrcmd -m #{config[:virtual_server]} -p #{config[:vios]} -c \"lsmap -vadapter #{vhost_name} -type lv -field backing -fmt \\\":\\\"\""
    backing_device = run_remote_command(ssh, command)
    print_with_output("Found device #{backing_device}")

    # now delete the file backed optical drive mapping
    ui.info "Removing #{vtopt_id}"
    command = "viosvrcmd -m #{config[:virtual_server]} -p #{config[:vios]} -c \"rmvdev -vtd #{vtopt_id}\""
    output = run_remote_command(ssh, command)
    print_with_output("#{vtopt_id} Removed", output)

    # now delete the vtscsi device
    ui.info "Removing vscsi #{lv_id}"
    command = "viosvrcmd -m #{config[:virtual_server]} -p #{config[:vios]} -c \"rmvdev -vtd #{lv_id}\""
    output = run_remote_command(ssh, command)
    print_with_output("#{lv_id} Removed", output)

    # now delete the logical volume
    ui.info "Removing lv #{backing_device}"
    command = "viosvrcmd -m #{config[:virtual_server]} -p #{config[:vios]} -c \"rmlv -f #{backing_device}\""
    output = run_remote_command(ssh, command)
    print_with_output("#{backing_device} Removed", output)

    # now that we know the id, let's remove it from the virtual io server
    ui.info "Removing vtscsi mapping from vios"
    command = "chhwres -r virtualio -m #{config[:virtual_server]} -o r -p #{config[:vios]} --rsubtype scsi -s #{vscsi_id}"
    output = run_remote_command(ssh, command)
    print_with_output("Mapping Removed", output)

    # save the virtual io server profile
    ui.info "Saving updated vios profile on #{config[:vios]}"
    command = "mksyscfg -r prof -m #{config[:virtual_server]} -o save -p #{config[:vios]} -n `lssyscfg -r lpar -m #{config[:virtual_server]} --filter \"lpar_names=#{config[:vios]}\" -F curr_profile` --force"
    output = run_remote_command(ssh, command)
    print_with_output("Profile Saved", output)

    # now remove the lpar completely
    ui.info "Removing #{config[:name]} completely"
    command = "rmsyscfg -r lpar -m #{config[:virtual_server]} -n #{config[:name]}"
    output = run_remote_command(ssh, command)
    print_with_output("#{config[:name]} Terminated", output)
  end
end

#read_and_validate_params ⇒ Object

Reads the input parameters and validates them. Will exit if it encounters an error



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# File 'lib/chef/knife/lpar_delete.rb', line 59

def read_and_validate_params
  if @name_args.length < 1
    show_usage
    exit 1
  end

  if config[:name].nil? ||
      config[:vios].nil? ||
      config[:virtual_server].nil?
    show_usage
    exit 1
  end
end

#run ⇒ Object

Run the plugin



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# File 'lib/chef/knife/lpar_delete.rb', line 49

def run
  read_and_validate_params
  @password = get_password
  delete_lpar
end