[PATCH v1 0/8] qcow2: Implement zstd cluster compression method

[Denis Plotnikov]

zstd comression method is faster than the only available zlib.
The series adds zstd to the methods available for clusters compression.

The implementation is done with respect to the recently added compression
type additional header to the qcow2 specification.

Denis Plotnikov (8):
  qcow2: introduce compression type feature
  qcow2: rework the cluster compression routine
  qcow2: add zstd cluster compression
  iotests: filter out compression_type
  iotests: fix header size, feature table size and backing file offset
  iotests: add "compression type" for test output matching
  iotests: 080: update header size value because of adding compression
    type
  iotests: 287: add qcow2 compression type test

 block/qcow2-threads.c            | 199 ++++++++++++++++++++++++++++---
 block/qcow2.c                    | 112 +++++++++++++++++
 block/qcow2.h                    |  31 +++--
 configure                        |  29 +++++
 docs/interop/qcow2.txt           |  18 +++
 include/block/block_int.h        |   1 +
 qapi/block-core.json             |  23 +++-
 tests/qemu-iotests/031.out       |  14 +--
 tests/qemu-iotests/036.out       |   4 +-
 tests/qemu-iotests/049.out       | 102 ++++++++--------
 tests/qemu-iotests/060.out       |   1 +
 tests/qemu-iotests/061.out       |  34 +++---
 tests/qemu-iotests/065           |  20 ++--
 tests/qemu-iotests/080           |   2 +-
 tests/qemu-iotests/144.out       |   4 +-
 tests/qemu-iotests/182.out       |   2 +-
 tests/qemu-iotests/242.out       |   5 +
 tests/qemu-iotests/255.out       |   8 +-
 tests/qemu-iotests/287           | 123 +++++++++++++++++++
 tests/qemu-iotests/287.out       |  41 +++++++
 tests/qemu-iotests/common.filter |   3 +-
 tests/qemu-iotests/group         |   1 +
 22 files changed, 663 insertions(+), 114 deletions(-)
 create mode 100755 tests/qemu-iotests/287
 create mode 100644 tests/qemu-iotests/287.out

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2.17.0