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vsphere_vm_vmdk_add.rb
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vsphere_vm_vmdk_add.rb
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#
# Author:: Brian Flad (<bflad417@gmail.com>)
# License:: Apache License, Version 2.0
#
require "chef/knife"
require_relative "helpers/base_vsphere_command"
# Add a new disk to a virtual machine
# VsphereVmvmdkadd extends the BaseVspherecommand
class Chef::Knife::VsphereVmVmdkAdd < Chef::Knife::BaseVsphereCommand
banner "knife vsphere vm vmdk add VMNAME DISK_GB"
deps do
Chef::Knife::BaseVsphereCommand.load_deps
require_relative "helpers/search_helper"
include SearchHelper
end
common_options
option :vmdk_type,
long: "--vmdk-type TYPE",
description: "Type of VMDK",
# this is a bad idea as it will let you overcommit SAN by 400% or more. thick is a more "sane" default
default: "thin"
option :target_lun,
long: "--target-lun NAME",
description: "name of target LUN"
# The main run method for vm_vmdk_add
#
def run
$stdout.sync = true
vmname = @name_args[0]
if vmname.nil?
show_usage
ui.fatal("You must specify a virtual machine name")
exit 1
end
size = @name_args[1]
if size.nil?
ui.fatal "You need a VMDK size!"
show_usage
exit 1
end
vim = vim_connection
vdm = vim.serviceContent.virtualDiskManager
vm = get_vm_by_name(vmname, get_config(:folder)) || fatal_exit("Could not find #{vmname}")
fatal_exit "Could not find #{vmname}" unless vm
target_lun = get_config(:target_lun) unless get_config(:target_lun).nil?
vmdk_size_kb = size.to_i * 1024 * 1024
if target_lun.nil?
vmdk_datastore = choose_datastore(vm.datastore, size)
exit(-1) if vmdk_datastore.nil?
else
vmdk_datastores = find_datastores_regex(target_lun)
vmdk_datastore = choose_datastore(vmdk_datastores, size)
exit(-1) if vmdk_datastore.nil?
vmdk_dir = "[#{vmdk_datastore.name}] #{vmname}"
# create the vm folder on the LUN or subsequent operations will fail.
unless vmdk_datastore.exists? vmname
dc = datacenter
begin
dc._connection.serviceContent.fileManager.MakeDirectory name: vmdk_dir, datacenter: dc, createParentDirectories: false
rescue RbVmomi::Fault => e
ui.warn "Ignoring a fault when trying to create #{vmdk_dir}. This may be related to issue #213."
if log_verbose?
puts "Chose #{vmdk_datastore.name} out of #{vmdk_datastores.map(&:name).join(", ")}"
puts e
end
end
end
end
puts "Choosing: #{vmdk_datastore.name}"
# now we need to inspect the files in this datastore to get our next file name
next_vmdk = 1
pc = vmdk_datastore._connection.serviceContent.propertyCollector
vms = vmdk_datastore.vm
vm_files = pc.collectMultiple vms, "layoutEx.file"
vm_files.keys.each do |vmFile|
vm_files[vmFile]["layoutEx.file"].each do |layout|
if layout.name =~ %r{^\[#{vmdk_datastore.name}\] #{vmname}/#{vmname}_([0-9]+).vmdk}
num = Regexp.last_match(1)
next_vmdk = num.to_i + 1 if next_vmdk <= num.to_i
end
end
end
vmdk_file_name = "#{vmname}/#{vmname}_#{next_vmdk}.vmdk"
vmdk_name = "[#{vmdk_datastore.name}] #{vmdk_file_name}"
vmdk_type = get_config(:vmdk_type)
vmdk_type = "preallocated" if vmdk_type == "thick"
puts "Next vmdk name is => #{vmdk_name}"
# create the disk
unless vmdk_datastore.exists? vmdk_file_name
vmdk_spec = RbVmomi::VIM::FileBackedVirtualDiskSpec(
adapterType: "lsiLogic",
capacityKb: vmdk_size_kb,
diskType: vmdk_type
)
ui.info "Creating VMDK"
ui.info "#{ui.color "Capacity:", :cyan} #{size} GB"
ui.info "#{ui.color "Disk:", :cyan} #{vmdk_name}"
if get_config(:noop)
ui.info "#{ui.color "Skipping disk creation process because --noop specified.", :red}"
else
vdm.CreateVirtualDisk_Task(
datacenter: datacenter,
name: vmdk_name,
spec: vmdk_spec
).wait_for_completion
end
end
ui.info "Attaching VMDK to #{vmname}"
# now we run through the SCSI controllers to see if there's an available one
available_controllers = []
use_controller = nil
scsi_tree = {}
vm.config.hardware.device.each do |device|
if device.is_a? RbVmomi::VIM::VirtualSCSIController
if scsi_tree[device.controllerKey].nil?
scsi_tree[device.key] = {}
scsi_tree[device.key]["children"] = []
end
scsi_tree[device.key]["device"] = device
end
next unless device.class == RbVmomi::VIM::VirtualDisk
if scsi_tree[device.controllerKey].nil?
scsi_tree[device.controllerKey] = {}
scsi_tree[device.controllerKey]["children"] = []
end
scsi_tree[device.controllerKey]["children"].push(device)
end
scsi_tree.keys.sort.each do |controller|
if scsi_tree[controller]["children"].length < 15
available_controllers.push(scsi_tree[controller]["device"].deviceInfo.label)
end
end
if available_controllers.length > 0
use_controller = available_controllers[0]
puts "using #{use_controller}"
else
if scsi_tree.keys.length < 4
# Add a controller if none are available
puts "no controllers available. Will attempt to create"
new_scsi_key = scsi_tree.keys.sort[scsi_tree.length - 1] + 1
new_scsi_bus_number = scsi_tree[scsi_tree.keys.sort[scsi_tree.length - 1]]["device"].busNumber + 1
controller_device = RbVmomi::VIM::VirtualLsiLogicController(
key: new_scsi_key,
busNumber: new_scsi_bus_number,
sharedBus: :noSharing
)
device_config_spec = RbVmomi::VIM::VirtualDeviceConfigSpec(
device: controller_device,
operation: RbVmomi::VIM::VirtualDeviceConfigSpecOperation("add")
)
vm_config_spec = RbVmomi::VIM::VirtualMachineConfigSpec(
deviceChange: [device_config_spec]
)
if get_config(:noop)
ui.info "#{ui.color "Skipping controller creation process because --noop specified.", :red}"
else
vm.ReconfigVM_Task(spec: vm_config_spec).wait_for_completion
end
else
ui.info "Controllers maxed out at 4."
exit(-1)
end
end
# now go back and get the new device's name
vm.config.hardware.device.each do |device|
if device.class == RbVmomi::VIM::VirtualLsiLogicController
use_controller = device.deviceInfo.label if device.key == new_scsi_key
end
end
# add the disk
controller = find_device(vm, use_controller)
used_unit_numbers = []
scsi_tree.keys.sort.each do |c|
next unless controller.key == scsi_tree[c]["device"].key
used_unit_numbers.push(scsi_tree[c]["device"].scsiCtlrUnitNumber)
scsi_tree[c]["children"].each do |disk|
used_unit_numbers.push(disk.unitNumber)
end
end
available_unit_numbers = []
(0..15).each do |scsi_id|
if used_unit_numbers.grep(scsi_id).length > 0
else
available_unit_numbers.push(scsi_id)
end
end
# ensure we don't try to add the controllers SCSI ID
new_unit_number = available_unit_numbers.min
puts "using SCSI ID #{new_unit_number}"
vmdk_backing = RbVmomi::VIM::VirtualDiskFlatVer2BackingInfo(
datastore: vmdk_datastore,
diskMode: "persistent",
fileName: vmdk_name
)
device = RbVmomi::VIM::VirtualDisk(
backing: vmdk_backing,
capacityInKB: vmdk_size_kb,
controllerKey: controller.key,
key: -1,
unitNumber: new_unit_number
)
device_config_spec = RbVmomi::VIM::VirtualDeviceConfigSpec(
device: device,
operation: RbVmomi::VIM::VirtualDeviceConfigSpecOperation("add")
)
vm_config_spec = RbVmomi::VIM::VirtualMachineConfigSpec(
deviceChange: [device_config_spec]
)
if get_config(:noop)
ui.info "#{ui.color "Skipping disk attaching process because --noop specified.", :red}"
else
vm.ReconfigVM_Task(spec: vm_config_spec).wait_for_completion
end
end
end