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[Qemu-devel] [PATCH v2 00/20] block: Implement writethrough in BlockBack
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH v2 00/20] block: Implement writethrough in BlockBackend |
Date: |
Tue, 29 Mar 2016 15:30:37 +0200 |
I already sent (and merged) patches that are meant to prevent users from
setting the writethrough option on non-root nodes, where we won't be able to
support the feature in the long term because we discovered that writethrough
mode only makes sense as a BlockBackend feature. The intention was to allow
moving the feature where it belongs in the following release without allowing
broken behaviour into the current release.
However, moving the feature involves another few changes in behaviour (which
are really fixes as the current behaviour is not what was intended) in some
corner cases (most of which became only possible with patches after 2.5), so it
seems to be actually preferable to do the full thing now instead of having
behaviour changes in two consecutive releases.
This series removes all traces of writethrough handling from the
BlockDriverState layer and implements it in BlockBackend instead.
v2:
- Rebased on top of the LUKS patches
- Keep .bdrv_co_writev implementation in iscsi/nbd/raw because there are still
places calling it instead of .bdrv_co_writev_flags [Max]
Kevin Wolf (20):
block: Add bdrv_parse_cache_mode()
qemu-nbd: Call blk_set_enable_write_cache() explicitly
qemu-io: Call blk_set_enable_write_cache() explicitly
qemu-img: Expand all BDRV_O_FLAGS uses
qemu-img: Call blk_set_enable_write_cache() explicitly
xen_disk: Call blk_set_enable_write_cache() explicitly
block: blockdev_init(): Call blk_set_enable_write_cache() explicitly
block: Always set writeback mode in blk_new_open()
block: Handle flush error in bdrv_pwrite_sync()
block: Move enable_write_cache to BB level
block/qapi: Use blk_enable_write_cache()
block: Introduce bdrv_co_writev_flags()
iscsi: Support BDRV_REQ_FUA
nbd: Support BDRV_REQ_FUA
raw: Support BDRV_REQ_FUA
block: Use bdrv_parse_cache_mode() in drive_init()
qemu-io: Use bdrv_parse_cache_mode() in reopen_f()
block: Remove bdrv_parse_cache_flags()
block: Remove BDRV_O_CACHE_WB
block: Remove bdrv_(set_)enable_write_cache()
block.c | 78 +++++---------------------------
block/backup.c | 1 -
block/block-backend.c | 45 ++++++++++--------
block/crypto.c | 3 +-
block/io.c | 15 ++++--
block/iscsi.c | 30 ++++++------
block/mirror.c | 1 -
block/nbd-client.c | 13 +++---
block/nbd-client.h | 2 +-
block/nbd.c | 27 ++++++++++-
block/parallels.c | 3 +-
block/qapi.c | 7 +--
block/qcow.c | 3 +-
block/qcow2.c | 9 ++--
block/qed.c | 3 +-
block/raw_bsd.c | 17 +++++--
block/sheepdog.c | 5 +-
block/vdi.c | 3 +-
block/vhdx.c | 3 +-
block/vmdk.c | 8 ++--
block/vpc.c | 3 +-
block/vvfat.c | 3 +-
blockdev.c | 35 ++++++--------
hw/block/xen_disk.c | 5 +-
include/block/block.h | 8 ++--
include/block/block_int.h | 8 ++--
include/block/qapi.h | 3 +-
qemu-img.c | 81 +++++++++++++++++++--------------
qemu-io-cmds.c | 13 +++++-
qemu-io.c | 21 +++++----
qemu-nbd.c | 5 +-
tests/qemu-iotests/051 | 2 +-
tests/qemu-iotests/051.pc.out | 10 ++--
tests/qemu-iotests/142 | 19 +++++---
tests/qemu-iotests/142.out | 103 ++++++++++++++++++++++++++++--------------
35 files changed, 320 insertions(+), 275 deletions(-)
--
1.8.3.1
- [Qemu-devel] [PATCH v2 00/20] block: Implement writethrough in BlockBackend,
Kevin Wolf <=
- [Qemu-devel] [PATCH v2 01/20] block: Add bdrv_parse_cache_mode(), Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 04/20] qemu-img: Expand all BDRV_O_FLAGS uses, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 02/20] qemu-nbd: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 03/20] qemu-io: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 07/20] block: blockdev_init(): Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 05/20] qemu-img: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 06/20] xen_disk: Call blk_set_enable_write_cache() explicitly, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 14/20] nbd: Support BDRV_REQ_FUA, Kevin Wolf, 2016/03/29
- [Qemu-devel] [PATCH v2 11/20] block/qapi: Use blk_enable_write_cache(), Kevin Wolf, 2016/03/29