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[Qemu-devel] [PATCH v4 00/11] backup compression
From: |
Denis V. Lunev |
Subject: |
[Qemu-devel] [PATCH v4 00/11] backup compression |
Date: |
Tue, 31 May 2016 12:15:19 +0300 |
The idea is simple - backup is "written-once" data. It is written block
by block and it is large enough. It would be nice to save storage
space and compress it.
These patches add the ability to compress data during backup. This
functionality is implemented by means of adding options to the qmp/hmp
commands(drive-backup, blockdev-backup). The implementation is quite
simple, because the responsibility for data compression imposed on the
format driver.
Signed-off-by: Pavel Butsykin <address@hidden>
Signed-off-by: Denis V. Lunev <address@hidden>
CC: Jeff Cody <address@hidden>
CC: Markus Armbruster <address@hidden>
CC: Eric Blake <address@hidden>
CC: John Snow <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Kevin Wolf <address@hidden>
Changes from v1:
- added unittest for backup compression (10, 11)
Changes from v2:
- implemented a new .bdrv_co_write_compressed interface to replace the
old .bdrv_write_compressed (2,3,4,5,6)
Changes from v3:
- added the byte-based interfaces:
blk_pwrite_compressed()/blk_co_pwritev_compressed() (1, 7)
- fix drive/blockdev-backup documentation (8, 9)
Pavel Butsykin (11):
block: switch blk_write_compressed() to byte-based interface
block/io: add bdrv_co_write_compressed
qcow2: add qcow2_co_write_compressed
vmdk: add vmdk_co_write_compressed
qcow: add qcow_co_write_compressed
block: remove BlockDriver.bdrv_write_compressed
block: optimization blk_pwrite_compressed()
drive-backup: added support for data compression
blockdev-backup: added support for data compression
qemu-iotests: test backup compression in 055
qemu-iotests: add vmdk for test backup compression in 055
block/backup.c | 13 +++++
block/block-backend.c | 23 +++++---
block/io.c | 14 +++--
block/qcow.c | 78 +++++++++++++++------------
block/qcow2.c | 89 ++++++++++++++++++-------------
block/vmdk.c | 56 +++----------------
blockdev.c | 20 ++++++-
hmp-commands.hx | 8 +--
hmp.c | 3 +-
include/block/block.h | 3 +-
include/block/block_int.h | 7 ++-
include/sysemu/block-backend.h | 7 ++-
qapi/block-core.json | 9 +++-
qemu-img.c | 8 +--
qemu-io-cmds.c | 2 +-
qmp-commands.hx | 9 +++-
tests/qemu-iotests/055 | 118 +++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/055.out | 4 +-
tests/qemu-iotests/iotests.py | 10 ++--
19 files changed, 322 insertions(+), 159 deletions(-)
--
2.1.4
- [Qemu-devel] [PATCH v4 00/11] backup compression,
Denis V. Lunev <=
- [Qemu-devel] [PATCH 02/11] block/io: add bdrv_co_write_compressed, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 01/11] block: switch blk_write_compressed() to byte-based interface, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 03/11] qcow2: add qcow2_co_write_compressed, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 04/11] vmdk: add vmdk_co_write_compressed, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 09/11] blockdev-backup: added support for data compression, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 05/11] qcow: add qcow_co_write_compressed, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 07/11] block: optimization blk_pwrite_compressed(), Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 06/11] block: remove BlockDriver.bdrv_write_compressed, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 08/11] drive-backup: added support for data compression, Denis V. Lunev, 2016/05/31
- [Qemu-devel] [PATCH 10/11] qemu-iotests: test backup compression in 055, Denis V. Lunev, 2016/05/31