[PATCH v4 0/4] qcow2: advanced compression options

[Andrey Shinkevich]

New enhancements for writing compressed data to QCOW2 image.

v4:
    The 'compression' support at the block generic layer has been
    accumulated in the separate patch 1/4. A little code refactoring
    was made.
v3:
    Instead of introducing multiple key options for many drivers, the
    'compression' option has been introduced at the block generic layer
    as suggested by Roman Kagan. Discussed on the email thread with ID
    <address@hidden>

Andrey Shinkevich (4):
  block: support compressed write at generic layer
  qcow2: Allow writing compressed data of multiple clusters
  tests/qemu-iotests: add case to write compressed data of multiple
    clusters
  tests/qemu-iotests: add case for block-stream compress

 block.c                    |  20 ++++++++-
 block/io.c                 |  14 ++++--
 block/qcow2.c              | 106 +++++++++++++++++++++++++++++++++------------
 blockdev.c                 |   9 +++-
 include/block/block.h      |   1 +
 include/block/block_int.h  |   2 +
 qapi/block-core.json       |   6 ++-
 qemu-options.hx            |   6 ++-
 tests/qemu-iotests/030     |  51 +++++++++++++++++++++-
 tests/qemu-iotests/030.out |   4 +-
 tests/qemu-iotests/214     |  35 +++++++++++++++
 tests/qemu-iotests/214.out |  15 +++++++
 12 files changed, 230 insertions(+), 39 deletions(-)

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1.8.3.1