Class: Chef::Knife::HmcDiskList

Inherits:
Chef::Knife show all
Includes:
HmcBase
Defined in:
lib/chef/knife/hmc_disk_list.rb

Instance Method Summary collapse

Methods included from HmcBase

#get_config, included, #tcp_ssh_alive, #validate, #validate!

Instance Method Details

print_header

> Prints table header for disk list



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# File 'lib/chef/knife/hmc_disk_list.rb', line 147

def print_header
  if validate([:lpar])
    puts "Listing information on all disks attached to #{get_config(:lpar)}\n"
  elsif get_config(:only_available)
    puts "Listing only available disks on this VIO Pair\n"
  elsif get_config(:only_used)
    puts "Listing only used disks on this VIO Pair\n"
  else
    puts "Listing all disks on this VIO Pair\n"
  end

  printf "%-20s %10s %20s %20s\n", "PVID", "Size (MB)", "Name (on #{get_config(:primary_vio)})", "Name (on #{get_config(:secondary_vio)})"
  printf "-----------------------------------------------------------------------------------------\n"
end

#print_line(vio1_disk, vio2_disk) ⇒ Object

print_line

> Prints a single line of the output table

given two Lun objects representing the same
disk on a pair of VIOs



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# File 'lib/chef/knife/hmc_disk_list.rb', line 168

def print_line(vio1_disk,vio2_disk)
  printf "%-20s %10s %20s %20s\n", vio1_disk.pvid, "#{vio1_disk.size_in_mb} MB", vio1_disk.name, vio2_disk.name
end

#run ⇒ Object 



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# File 'lib/chef/knife/hmc_disk_list.rb', line 54

def run
 Chef::Log.debug("Listing disks...")

  validate!
  hmc = Hmc.new(get_config(:hmc_host), get_config(:hmc_username) , {:password => get_config(:hmc_password)}) 
  hmc.connect

  validate!([:primary_vio,:secondary_vio,:frame])

  frame = get_config(:frame)
  primary_vio_name = get_config(:primary_vio)
  secondary_vio_name = get_config(:secondary_vio)

  #Make Vio objects for the two VIOs
  primary_vio = Vio.new(hmc,frame,primary_vio_name)
  secondary_vio = Vio.new(hmc,frame,secondary_vio_name)

  #Arrays that will hold the disks to list
  vio1_disks = []
  vio2_disks = []

  if validate([:lpar])
    #Show only disks attached to the specified LPAR
    lpar_name = get_config(:lpar)
    options_hash = hmc.get_lpar_options(frame,lpar_name)
    lpar = Lpar.new(options_hash)

    #Get the vSCSIs from this LPAR and determine the virtual adapter
    #slots used by each VIO
    vscsi_adapters = lpar.get_vscsi_adapters
    primary_vio_slot = nil
    secondary_vio_slot = nil
    adapter_cnt=0
    vscsi_adapters.each do |adapter|
      if adapter.remote_lpar_name == primary_vio.name
        primary_vio_slot = adapter.remote_slot_num
        adapter_cnt += 1
      elsif adapter.remote_lpar_name == secondary_vio.name
        secondary_vio_slot = adapter.remote_slot_num
        adapter_cnt += 1
      end             
    end

    if primary_vio_slot.nil? or secondary_vio_slot.nil? or adapter_cnt != 2
      #Could not determine which vSCSIs to use
      error = "Unable to determine which vSCSI adapters have storage attached to it from #{primary_vio_name} and #{secondary_vio_name}\n" +
              "Cannot list disks attached to #{lpar_name}"
      puts "#{error}"
      ui.error(error)           
      exit 1            
    end

    #Find the vhosts that hold this LPARs disks
    primary_vhost = primary_vio.find_vhost_given_virtual_slot(primary_vio_slot)
    secondary_vhost = secondary_vio.find_vhost_given_virtual_slot(secondary_vio_slot)

    #Get the names (known to the VIOs) of the disks attached to the LPAR
    vio1_disks = primary_vio.get_attached_disks(primary_vhost)
    vio2_disks = secondary_vio.get_attached_disks(secondary_vhost)        
  elsif get_config(:only_available)
    #Show only available disks
    vio1_disks = primary_vio.available_disks
    vio2_disks = secondary_vio.available_disks
  elsif get_config(:only_used)
    #Show only used disks
    vio1_disks = primary_vio.used_disks
    vio2_disks = secondary_vio.used_disks
  else
    #None of :lpar, :only_available, and :only_used options were specified.
    #Show used *and* available disks
    vio1_disks = primary_vio.available_disks + primary_vio.used_disks
    vio2_disks = secondary_vio.available_disks + secondary_vio.used_disks
  end

  #List the disks populated in vio1_disks and vio2_disks
  print_header

  vio1_disks.each do |v1_disk|
    vio2_disks.each do |v2_disk|
      if v1_disk == v2_disk
        print_line(v1_disk,v2_disk)
      end
    end
  end
  
  hmc.disconnect
  
end