[PATCH v11 0/3] qcow2: advanced compression options

Andrey Shinkevich posted 3 patches 1 week ago
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git fetch https://github.com/patchew-project/qemu tags/patchew/1575284222-548831-1-git-send-email-andrey.shinkevich@virtuozzo.com
Maintainers: Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>, Eric Blake <eblake@redhat.com>, Markus Armbruster <armbru@redhat.com>
block/Makefile.objs        |   1 +
block/filter-compress.c    | 168 +++++++++++++++++++++++++++++++++++++++++++++
block/qcow2.c              | 102 +++++++++++++++++++--------
qapi/block-core.json       |  10 +--
tests/qemu-iotests/214     |  43 ++++++++++++
tests/qemu-iotests/214.out |  14 ++++
6 files changed, 307 insertions(+), 31 deletions(-)
create mode 100644 block/filter-compress.c

[PATCH v11 0/3] qcow2: advanced compression options

Posted by Andrey Shinkevich 1 week ago
The compression filter driver is introduced as suggested by Max.
A sample usage of the filter can be found in the test #214.
Now, multiple clusters can be written compressed.
It is useful for the backup job.

v11:
  01: The device name was replaced with the filter underlying format
      name in the error message on failure of opening the compression
      driver as suggested by Vladimir.

Andrey Shinkevich (3):
  block: introduce compress filter driver
  qcow2: Allow writing compressed data of multiple clusters
  tests/qemu-iotests: add case to write compressed data of multiple
    clusters

 block/Makefile.objs        |   1 +
 block/filter-compress.c    | 168 +++++++++++++++++++++++++++++++++++++++++++++
 block/qcow2.c              | 102 +++++++++++++++++++--------
 qapi/block-core.json       |  10 +--
 tests/qemu-iotests/214     |  43 ++++++++++++
 tests/qemu-iotests/214.out |  14 ++++
 6 files changed, 307 insertions(+), 31 deletions(-)
 create mode 100644 block/filter-compress.c

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1.8.3.1