:py:mod:`dissect.hypervisor.backup.vma`
=======================================

.. py:module:: dissect.hypervisor.backup.vma


Module Contents
---------------

Classes
~~~~~~~

.. autoapisummary::

   dissect.hypervisor.backup.vma.VMA
   dissect.hypervisor.backup.vma.Device
   dissect.hypervisor.backup.vma.Extent
   dissect.hypervisor.backup.vma.DeviceDataStream




.. py:class:: VMA(fh)


   Proxmox VMA.

   Parse and provide a readable object for devices in a Proxmox VMA backup file.
   VMA is designed to be streamed for extraction, so we need to do some funny stuff to create a readable
   object from it. Performance is not optimal, so it's generally advised to extract a VMA instead.
   The vma-extract utility can be used for that.

   .. py:property:: creation_time


   .. py:method:: blob_data(offset)


   .. py:method:: blob_string(offset)


   .. py:method:: config(name)


   .. py:method:: configs()


   .. py:method:: device(dev_id)


   .. py:method:: devices()


   .. py:method:: extents()



.. py:class:: Device(vma, dev_id, name, size)


   .. py:method:: __repr__()

      Return repr(self).


   .. py:method:: open()



.. py:class:: Extent(fh, offset)


   .. py:method:: __repr__()

      Return repr(self).



.. py:class:: DeviceDataStream(device)


   Bases: :py:obj:`dissect.util.stream.AlignedStream`

   Basic buffered stream that provides easy aligned reads.

   Must be subclassed for various stream implementations. Subclasses can implement:
       - _read(offset, length)
       - _seek(pos, whence=io.SEEK_SET)

   The offset and length for _read are guaranteed to be aligned. The only time
   that overriding _seek would make sense is if there's no known size of your stream,
   but still want to provide SEEK_END functionality.

   Most subclasses of AlignedStream take one or more file-like objects as source.
   Operations on these subclasses, like reading, will modify the source file-like object as a side effect.

   :param size: The size of the stream. This is used in read and seek operations. None if unknown.
   :param align: The alignment size. Read operations are aligned on this boundary. Also determines buffer size.