v18:
* 04: add quotes to all file name variables [Vladimir]
* 04: add Vladimir's comment according to "qemu-io write -s"
option issue.
v17:
* 03: remove incorrect comment in zstd decompress [Vladimir]
* 03: remove "paraniod" and rewrite the comment on decompress [Vladimir]
* 03: fix dead assignment [Vladimir]
* 04: add and remove quotes [Vladimir]
* 04: replace long offset form with the short one [Vladimir]
v16:
* 03: ssize_t for ret, size_t for zstd_ret [Vladimir]
* 04: small fixes according to the comments [Vladimir]
v15:
* 01: aiming qemu 5.1 [Eric]
* 03: change zstd_res definition place [Vladimir]
* 04: add two new test cases [Eric]
1. test adjacent cluster compression with zstd
2. test incompressible cluster processing
* 03, 04: many rewording and gramma fixing [Eric]
v14:
* fix bug on compression - looping until compress == 0 [Me]
* apply reworked Vladimir's suggestions:
1. not mixing ssize_t with size_t
2. safe check for ENOMEM in compression part - avoid overflow
3. tolerate sanity check allow zstd to make progress only
on one of the buffers
v13:
* 03: add progress sanity check to decompression loop [Vladimir]
03: add successful decompression check [Me]
v12:
* 03: again, rework compression and decompression loops
to make them more correct [Vladimir]
03: move assert in compression to more appropriate place
[Vladimir]
v11:
* 03: the loops don't need "do{}while" form anymore and
the they were buggy (missed "do" in the beginning)
replace them with usual "while(){}" loops [Vladimir]
v10:
* 03: fix zstd (de)compressed loops for multi-frame
cases [Vladimir]
v9:
* 01: fix error checking and reporting in qcow2_amend compression type part
[Vladimir]
* 03: replace asserts with -EIO in qcow2_zstd_decompression [Vladimir,
Alberto]
* 03: reword/amend/add comments, fix typos [Vladimir]
v8:
* 03: switch zstd API from simple to stream [Eric]
No need to state a special cluster layout for zstd
compressed clusters.
v7:
* use qapi_enum_parse instead of the open-coding [Eric]
* fix wording, typos and spelling [Eric]
v6:
* "block/qcow2-threads: fix qcow2_decompress" is removed from the series
since it has been accepted by Max already
* add compile time checking for Qcow2Header to be a multiple of 8 [Max,
Alberto]
* report error on qcow2 amending when the compression type is actually
chnged [Max]
* remove the extra space and the extra new line [Max]
* re-arrange acks and signed-off-s [Vladimir]
v5:
* replace -ENOTSUP with abort in qcow2_co_decompress [Vladimir]
* set cluster size for all test cases in the beginning of the 287 test
v4:
* the series is rebased on top of 01 "block/qcow2-threads: fix
qcow2_decompress"
* 01 is just a no-change resend to avoid extra dependencies. Still, it may
be merged in separate
v3:
* remove redundant max compression type value check [Vladimir, Eric]
(the switch below checks everything)
* prevent compression type changing on "qemu-img amend" [Vladimir]
* remove zstd config setting, since it has been added already by
"migration" patches [Vladimir]
* change the compression type error message [Vladimir]
* fix alignment and 80-chars exceeding [Vladimir]
v2:
* rework compression type setting [Vladimir]
* squash iotest changes to the compression type introduction patch
[Vladimir, Eric]
* fix zstd availability checking in zstd iotest [Vladimir]
* remove unnecessry casting [Eric]
* remove rudundant checks [Eric]
* fix compressed cluster layout in qcow2 spec [Vladimir]
* fix wording [Eric, Vladimir]
* fix compression type filtering in iotests [Eric]
v1:
the initial series
Denis Plotnikov (4):
qcow2: introduce compression type feature
qcow2: rework the cluster compression routine
qcow2: add zstd cluster compression
iotests: 287: add qcow2 compression type test
docs/interop/qcow2.txt | 1 +
configure | 2 +-
qapi/block-core.json | 23 +++-
block/qcow2.h | 20 ++-
include/block/block_int.h | 1 +
block/qcow2-threads.c | 228 +++++++++++++++++++++++++++++--
block/qcow2.c | 120 ++++++++++++++++
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 | 28 ++--
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 | 167 ++++++++++++++++++++++
tests/qemu-iotests/287.out | 70 ++++++++++
tests/qemu-iotests/common.filter | 3 +-
tests/qemu-iotests/group | 1 +
22 files changed, 732 insertions(+), 108 deletions(-)
create mode 100755 tests/qemu-iotests/287
create mode 100644 tests/qemu-iotests/287.out