Synnefo » snf-ganeti

  def _UnlockedGetInstanceDisks(self, instance):

    """Return the disks' info for the given instance

    This function is for internal use, when the config lock is already held.

    """

    return [self._UnlockedGetDiskInfo(disk) for disk in instance.disks]

  @locking.ssynchronized(_config_lock, shared=1)

  def GetInstanceDisks(self, instance):

    """Return the disks' info for the given instance

    @type instance: L{objects.Instance}

    @param instance: The instance we want to know the disks for

    @rtype: List of L{objects.Disk}

    @return: A list with all the disks' info

    """

    return self._UnlockedGetInstanceDisks(instance)

  def _UnlockedGetDiskInfo(self, disk_uuid):

    """Returns information about an instance.

    This function is for internal use, when the config lock is already held.

    """

    if disk_uuid not in self._config_data.disks:

      return None

    return self._config_data.disks[disk_uuid]

  @locking.ssynchronized(_config_lock, shared=1)

  def GetDiskInfo(self, disk_uuid):

    """Returns information about a disk.

    It takes the information from the configuration file.

    @param disk_uuid: UUID of the disk

    @rtype: L{objects.Disk}

    @return: the disk object

    """

    return self._UnlockedGetDiskInfo(disk_uuid)