Synnefo » snf-ganeti » ganeti-local

    If this is a plain block device (e.g. LVM) than assemble does

    nothing, as the LVM has no children and we don't put logical

    volumes offline.

    One guarantee is that after the device has been assembled, it

    knows its major/minor numbers. This allows other devices (usually

    parents) to probe correctly for their children.

    status = True

    for child in self._children:

      if not isinstance(child, BlockDev):

        raise TypeError("Invalid child passed of type '%s'" % type(child))

      if not status:

        break

      status = status and child.Assemble()

      if not status:

        break

      try:

        child.Open()

      except errors.BlockDeviceError:

        for child in self._children:

          child.Shutdown()

        raise

    if not status:

      for child in self._children:

        child.Shutdown()

    return status