On Mon, Feb 18, 2013 at 06:03:28PM -0500, Jeff Cody wrote:
> This is preliminary support for VHDX images, based on the spec:
>
> "VHDX Format Specification v0.95", published 4/12/2012
> https://www.microsoft.com/en-us/download/details.aspx?id=29681
>
> My working git repo for this work is:
> https://github.com/codyprime/qemu-kvm-jtc/commits/jtc-vhdx-work-rfc1
> git://github.com/codyprime/qemu-kvm-jtc.git branch jtc-vhdx-work-rfc1
>
> Debug prints can be ignored, as they are just there for development.
>
> A lot of error handling is not in place yet, and write support
> is missing. Also missing is support for differencing files.
>
> This works well enough to mount a VHDX image (with readonly=on), and
> read the content.
>
> Work in progress (will be available in my git repo):
> - write support
> - differencing file support
> - more error handling
> - read performance improvements (coroutines, etc.)
> - split some of the functions out of the vhdx.c file
> (e.g. region / metdata handling)
- I forgot to mention, it also does not have log replay support
yet either, that is WIP as well.
>
> Any comments are welcome
>
> Jeff Cody (4):
> qemu: add castagnoli crc32c checksum algorithm
> block: vhdx header for the QEMU support of VHDX images
> block: VHDX block driver support
> block: add vhdx to Makefile.obj for compile
>
> block/Makefile.objs | 1 +
> block/vhdx.c | 814
> ++++++++++++++++++++++++++++++++++++++++++++++++++
> block/vhdx.h | 349 ++++++++++++++++++++++
> include/qemu/crc32c.h | 35 +++
> util/Makefile.objs | 1 +
> util/crc32c.c | 115 +++++++
> 6 files changed, 1315 insertions(+)
> create mode 100644 block/vhdx.c
> create mode 100644 block/vhdx.h
> create mode 100644 include/qemu/crc32c.h
> create mode 100644 util/crc32c.c
>
> --
> 1.8.1.2
>
