Class: MiqVm

Inherits:
Object
  • Object
show all
Defined in:
lib/MiqVm/MiqVm.rb

Direct Known Subclasses

MiqAzureVm, MiqLocalVm, MiqRhevmVm

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(vmCfg, ost = nil) ⇒ MiqVm

Returns a new instance of MiqVm.



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# File 'lib/MiqVm/MiqVm.rb', line 11

def initialize(vmCfg, ost = nil)
  @ost = ost || OpenStruct.new
  $log.debug "MiqVm::initialize: @ost = nil" if $log && !@ost
  @vmDisks = nil
  @wholeDisks = []
  @rootTrees = nil
  @volumeManager = nil
  @applianceVolumeManager = nil
  @vmConfigFile = ""
  @diskInitErrors = {}
  unless vmCfg.kind_of?(Hash)
    @vmConfigFile = vmCfg
    @vmDir = File.dirname(vmCfg)
  end

  $log.debug "MiqVm::initialize: @ost.openParent = #{@ost.openParent}" if $log

  #
  # If we're passed an MiqVim object, then use VIM to obtain the Vm's
  # configuration through the instantiated server.
  # If we're passed a snapshot ID, then obtain the configration of the
  # VM when the snapshot was taken.
  #
  # TODO: move to MiqVmwareVm
  if (@vim = @ost.miqVim)
    $log.debug "MiqVm::initialize: accessing VM through server: #{@vim.server}" if $log.debug?
    @vimVm = @vim.getVimVm(vmCfg)
    $log.debug "MiqVm::initialize: setting @ost.miqVimVm = #{@vimVm.class}" if $log.debug?
    @ost.miqVimVm = @vimVm
    @vmConfig = VmConfig.new(@vimVm.getCfg(@ost.snapId))
  # TODO: move this to MiqRhevmVm.
  elsif (@rhevm = @ost.miqRhevm)
    $log.debug "MiqVm::initialize: accessing VM through RHEVM server" if $log.debug?
    $log.debug "MiqVm::initialize: vmCfg = #{vmCfg}"
    @rhevmVm = @rhevm.vm_or_template_by_path(vmCfg)
    $log.debug "MiqVm::initialize: setting @ost.miqRhevmVm = #{@rhevmVm.class}" if $log.debug?
    @ost.miqRhevmVm = @rhevmVm
    @vmConfig = VmConfig.new(getCfg(@ost.snapId))
    $log.debug "MiqVm::initialize: @vmConfig.getHash = #{@vmConfig.getHash.inspect}"
    $log.debug "MiqVm::initialize: @vmConfig.getDiskFileHash = #{@vmConfig.getDiskFileHash.inspect}"
  else
    @vimVm = nil
    @vmConfig = VmConfig.new(vmCfg)
  end
end

Instance Attribute Details

#diskInitErrors ⇒ Object (readonly)

Returns the value of attribute diskInitErrors.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def diskInitErrors
  @diskInitErrors
end

#rhevm ⇒ Object (readonly)

Returns the value of attribute rhevm.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def rhevm
  @rhevm
end

#rhevmVm ⇒ Object (readonly)

Returns the value of attribute rhevmVm.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def rhevmVm
  @rhevmVm
end

#vim ⇒ Object (readonly)

Returns the value of attribute vim.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def vim
  @vim
end

#vimVm ⇒ Object (readonly)

Returns the value of attribute vimVm.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def vimVm
  @vimVm
end

#vmConfig ⇒ Object (readonly)

Returns the value of attribute vmConfig.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def vmConfig
  @vmConfig
end

#vmConfigFile ⇒ Object (readonly)

Returns the value of attribute vmConfigFile.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def vmConfigFile
  @vmConfigFile
end

#wholeDisks ⇒ Object (readonly)

Returns the value of attribute wholeDisks.



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# File 'lib/MiqVm/MiqVm.rb', line 9

def wholeDisks
  @wholeDisks
end

Instance Method Details

#applianceVolumeManager ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 161

def applianceVolumeManager
  return nil if @ost.nfs_storage_mounted
  @applianceVolumeManager ||= MiqVolumeManager.fromNativePvs
end

#extract(c) ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 195

def extract(c)
  xml = miq_extract.extract(c)
  raise "Could not extract \"#{c}\" from VM" unless xml
  (xml)
end

#miq_extract ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 191

def miq_extract
  @miq_extract ||= MIQExtract.new(self, @ost)
end

#openDisks(diskFiles) ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 66

def openDisks(diskFiles)
  pVolumes = []

  $log.debug "openDisks: no disk files supplied." unless diskFiles

  #
  # Build a list of the VM's physical volumes.
  #
  diskFiles.each do |dtag, df|
    $log.debug "openDisks: processing disk file (#{dtag}): #{df}"
    dInfo = OpenStruct.new

    if @ost.miqVim
      dInfo.vixDiskInfo            = {}
      dInfo.vixDiskInfo[:fileName] = @ost.miqVim.datastorePath(df)
      if @ost.miqVimVm
        @vdlConnection = @ost.miqVimVm.vdlVcConnection unless @vdlConnection
      else
        @vdlConnection = @ost.miqVim.vdlConnection unless @vdlConnection
      end
      $log.debug "openDisks: using disk file path: #{dInfo.vixDiskInfo[:fileName]}"
      dInfo.vixDiskInfo[:connection]  = @vdlConnection
    else
      dInfo.fileName = df
      disk_format = @vmConfig.getHash["#{dtag}.format"]  # Set by rhevm for iscsi and fcp disks
      dInfo.format = disk_format unless disk_format.blank?
    end

    mode = @vmConfig.getHash["#{dtag}.mode"]

    dInfo.hardwareId = dtag
    dInfo.baseOnly = @ost.openParent unless mode && mode["independent"]
    dInfo.rawDisk = @ost.rawDisk
    $log.debug "MiqVm::openDisks: dInfo.baseOnly = #{dInfo.baseOnly}"

    begin
      d = applianceVolumeManager && applianceVolumeManager.lvHash[dInfo.fileName] if @rhevm
      if d
        $log.debug "MiqVm::openDisks: using applianceVolumeManager for #{dInfo.fileName}" if $log.debug?
        d.dInfo.fileName = dInfo.fileName
        d.dInfo.hardwareId = dInfo.hardwareId
        d.dInfo.baseOnly = dInfo.baseOnly
        d.dInfo.format = dInfo.format if dInfo.format
        d.dInfo.applianceVolumeManager = applianceVolumeManager
        #
        # Here, we need to probe the disk to determine its data format,
        # QCOW for example. If the disk format is not flat, push a disk
        # supporting the format on top of this disk. Then set d to point
        # to the new top disk.
        #
        d = d.pushFormatSupport
      else
        d = MiqDisk.getDisk(dInfo)
        # I am not sure if getting a nil handle back should throw an error or not.
        # For now I am just skipping to the next disk.  (GMM)
        next if d.nil?
      end
    rescue => err
      $log.error "Couldn't open disk file: #{df}"
      $log.error err.to_s
      $log.debug err.backtrace.join("\n")
      @diskInitErrors[df] = err.to_s
      next
    end

    @wholeDisks << d
    p = d.getPartitions
    if p.empty?
      #
      # If the disk has no partitions, the whole disk can be a single volume.
      #
      pVolumes << d
    else
      #
      # If the disk is partitioned, the partitions are physical volumes,
      # but not the whild disk.
      #
      pVolumes.concat(p)
    end
  end

  pVolumes
end

#rootTrees ⇒ Object

def openDisks



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# File 'lib/MiqVm/MiqVm.rb', line 150

def rootTrees
  return @rootTrees if @rootTrees
  @rootTrees = MiqMountManager.mountVolumes(volumeManager, @vmConfig, @ost)
  volumeManager.rootTrees = @rootTrees
  @rootTrees
end

#snapshots(refresh = false) ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 166

def snapshots(refresh = false)
  return nil unless @vimVm
  return @vimVm.snapshotInfo(refresh) if @vimVm
end

#unmount ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 171

def unmount
  $log.info "MiqVm.unmount called."
  @wholeDisks.each(&:close)
  @wholeDisks.clear
  if @volumeManager
    @volumeManager.close
    @volumeManager = nil
  end
  @applianceVolumeManager.closeAll if @applianceVolumeManager
  @applianceVolumeManager = nil
  @ost.miqVim.closeVdlConnection(@vdlConnection) if @vdlConnection
  if @volMgrPS
    @volMgrPS.postMount
    @volMgrPS = nil
  end
  @vimVm.release if @vimVm
  @rootTrees = nil
  @vmDisks = nil
end

#vmDisks ⇒ Object

def initialize



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# File 'lib/MiqVm/MiqVm.rb', line 57

def vmDisks
  @vmDisks ||= begin
    @volMgrPS = VolMgrPlatformSupport.new(@vmConfig.configFile, @ost)
    @volMgrPS.preMount

    openDisks(@vmConfig.getDiskFileHash)
  end
end

#volumeManager ⇒ Object 



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# File 'lib/MiqVm/MiqVm.rb', line 157

def volumeManager
  @volumeManager ||= MiqVolumeManager.new(vmDisks)
end