Class: MiqRhevmVm

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

Constant Summary collapse

RHEV_NFS_UID = 
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Instance Attribute Summary

Attributes inherited from MiqVm

#diskInitErrors, #rhevm, #rhevmVm, #vim, #vimVm, #vmConfig, #vmConfigFile, #wholeDisks

Instance Method Summary collapse

Methods inherited from MiqVm

#applianceVolumeManager, #extract, #initialize, #miq_extract, #rootTrees, #snapshots, #vmDisks, #volumeManager

Constructor Details

This class inherits a constructor from MiqVm

Instance Method Details

#add_fs_mount(storage_obj) ⇒ Object

Returns uri and mount points, hashed by storage ID.



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 109

def add_fs_mount(storage_obj)
  storage_id = storage_obj.id
  return if nfs_mounts[storage_id]

  mount_point = ::File.join(nfs_mount_root, nfs_mount_dir(storage_obj))
  type = storage_obj.storage.type
  nfs_mounts[storage_id] = {
    :uri         => "#{type}://#{nfs_uri(storage_obj)}",
    :mount_point => mount_point,
    :read_only   => true,
    :type        => type
  }
end

#file_path_for_storage_type(storage_obj, disk) ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 70

def file_path_for_storage_type(storage_obj, disk)
  storage_type = storage_obj&.storage&.type

  # TODO: account for other storage types here.
  if storage_type_file?(storage_type)
    add_fs_mount(storage_obj)
    fs_file_path(storage_obj, disk)
  else
    lun_file_path(storage_obj, disk)
  end
end

#fs_file_path(storage_obj, disk) ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 86

def fs_file_path(storage_obj, disk)
  storage_id  = storage_obj.id
  disk_id     = disk.id
  image_id    = disk.image_id
  mount_point = nfs_mounts[storage_id][:mount_point]

  ::File.join(mount_point, storage_id, 'images', disk_id, image_id)
end

#getCfg(_snap = nil) ⇒ Object

Raises:

  • (MiqException::MiqVimError) 


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# File 'lib/MiqVm/MiqRhevmVm.rb', line 28

def getCfg(_snap = nil)
  cfg_props = @rhevmVm.as_json.with_indifferent_access

  raise MiqException::MiqVimError, "Failed to retrieve configuration information for VM" if cfg_props.nil?

  storage_domains = @rhevm.collect_storagedomains
  $log.debug "MiqRhevmVm#getCfg: storage_domains = #{storage_domains.inspect}"

  cfg_hash = {}
  cfg_hash['displayname'] = cfg_props[:name]
  cfg_hash['guestos']     = cfg_props.fetch_path(:os, :type)
  cfg_hash['memsize']     = cfg_props[:memory] / 1_048_576  # in MB
  cfg_hash['numvcpu']     = cfg_props.fetch_path(:cpu, :sockets)

  # Collect disk information
  disks = @rhevm.collect_vm_disks(@rhevmVm)
  disks.each_with_index do |disk, idx|
    $log.debug "MiqRhevmVm#getCfg: disk = #{disk.inspect}"
    storage_domain = disk.storage_domains&.first
    if storage_domain.nil?
      $log.info("Disk <#{disk.name}> is skipped due to unassigned storage domain")
      next
    end
    storage_id     = storage_domain.id
    storage_obj    = storage_domains_by_id[storage_id]

    file_path = file_path_for_storage_type(storage_obj, disk)
    file_path_s = file_path.to_s

    tag = "scsi0:#{idx}"
    cfg_hash["#{tag}.present"]    = "true"
    cfg_hash["#{tag}.devicetype"] = "disk"
    cfg_hash["#{tag}.filename"]   = file_path_s
    cfg_hash["#{tag}.format"]     = disk.format

    if storage_type_block?(storage_obj.storage.type) && !lv_active?(file_path_s)
      AwesomeSpawn.run!("sudo lvchange", :params => [:activate, "y", file_path_s])
    end
  end
  cfg_hash
end

#lun_file_path(storage_obj, disk) ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 95

def lun_file_path(storage_obj, disk)
  storage_id = storage_obj.id
  disk_id    = disk.image_id || disk.id

  ::File.join('/dev', storage_id, disk_id)
end

#mount_storage ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 136

def mount_storage
  require 'manageiq/gems/pending'
  require 'util/mount/miq_nfs_session'
  require 'util/mount/miq_glusterfs_session'
  log_header = "MIQ(MiqRhevmVm.mount_storage)"
  $log.info "#{log_header} called"

  @ost.nfs_storage_mounted = false

  if nfs_mounts.empty?
    $log.info "#{log_header} storage mount not needed."
    return
  end

  begin
    FileUtils.mkdir_p(nfs_mount_root) unless File.directory?(nfs_mount_root)
    nfs_mounts.each do |storage_id, mount_info|
      $log.info "#{log_header} Mounting #{mount_info[:uri]} on #{mount_info[:mount_point]} for #{storage_id}"

      case mount_info[:type]
      when "nfs"
        MiqNfsSession.new(mount_info).connect
      when "glusterfs"
        MiqGlusterfsSession.new(mount_info).connect
      end

      @ost.nfs_storage_mounted = true
    end
    $log.info "#{log_header} - mount:\n#{`mount`}"
  rescue
    $log.error "#{log_header} Unable to mount all items from <#{nfs_mount_root}>"
    unmount_storage
    raise $!
  end
end

#nfs_mount_dir(storage_obj) ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 132

def nfs_mount_dir(storage_obj)
  nfs_uri(storage_obj).gsub("_", "__").tr("/", "_")
end

#nfs_mount_root ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 82

def nfs_mount_root
  @nfs_mount_root ||= @ost.nfs_mount_root || "/mnt/#{@rhevmVm.id}"
end

#nfs_mounts ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 128

def nfs_mounts
  @nfs_mounts ||= {}
end

#nfs_uri(storage_obj) ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 123

def nfs_uri(storage_obj)
  storage = storage_obj.storage
  "#{storage.address}:#{storage.path}"
end

#openDisks(diskFiles) ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 7

def openDisks(diskFiles)
  mount_storage
  if @ost.nfs_storage_mounted
    $log.debug "MiqRhevmVm#openDisks: setting euid = #{RHEV_NFS_UID}"
    orig_uid = Process::UID.eid
    Process::UID.grant_privilege(RHEV_NFS_UID)
  end
  rv = super
  if @ost.nfs_storage_mounted
    $log.debug "MiqRhevmVm#openDisks: resetting euid = #{orig_uid}"
    Process::UID.grant_privilege(orig_uid)
  end
  rv
end

#storage_domains_by_id ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 102

def storage_domains_by_id
  @storage_domains_by_id ||= @rhevm.collect_storagedomains.each_with_object({}) { |sd, sdh| sdh[sd.id] = sd }
end

#unmount ⇒ Object 



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 22

def unmount
  super
ensure
  unmount_storage
end

#unmount_storage ⇒ Object

Moved from MIQExtract.rb



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# File 'lib/MiqVm/MiqRhevmVm.rb', line 173

def unmount_storage
  log_header = "MIQ(MiqRhevmVm.unmount_storage)"
  return if nfs_mounts.empty?
  begin
    $log.warn "#{log_header} Unmount all items from <#{nfs_mount_root}>"
    nfs_mounts.each_value { |mnt| MiqNfsSession.disconnect(mnt[:mount_point]) }
    FileUtils.rm_rf(nfs_mount_root)
    @ost.nfs_storage_mounted = false
  rescue
    $log.warn "#{log_header} Failed to unmount all items from <#{nfs_mount_root}>.  Reason: <#{$!}>"
  end
end