cinder/releasenotes/notes/bug-1996188-vmdk-subformat-...

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---
upgrade:
- |
This release introduces a new configuration option,
``vmdk_allowed_types``, that specifies the list of VMDK image
subformats that Cinder will allow. The default setting allows
only the 'streamOptimized' and 'monolithicSparse' subformats,
which do not use named extents.
security:
- |
This release introduces a new configuration option,
``vmdk_allowed_types``, that specifies the list of VMDK image
subformats that Cinder will allow in order to prevent exposure
of host information by modifying the named extents in a VMDK
image. The default setting allows only the 'streamOptimized'
and 'monolithicSparse' subformats, which do not use named extents.
- |
As part of the fix for `Bug #1996188
<https://bugs.launchpad.net/cinder/+bug/1996188>`_, cinder is now more
strict in checking that the ``disk_format`` recorded for an image (as
revealed by the Image Service API image-show response) matches what
cinder detects when it downloads the image. Thus, some requests to
create a volume from a source image that had previously succeeded may
fail with an ``ImageUnacceptable`` error.
fixes:
- |
`Bug #1996188 <https://bugs.launchpad.net/cinder/+bug/1996188>`_:
Fixed issue where a VMDK image file whose createType allowed named
extents could expose host information. This change introduces a new
configuration option, ``vmdk_allowed_types``, that specifies the list
of VMDK image subformats that Cinder will allow. The default
setting allows only the 'streamOptimized' and 'monolithicSparse'
subformats.