With this series, all the block-stream COR operations pass through
the COR-filter. The patches 01-08/15 are taken from the series
"block: Deal with filters" by Max Reitz, the full version of that
can be found in the branches:
https://git.xanclic.moe/XanClic/qemu child-access-functions-v6
https://github.com/XanClic/qemu child-access-functions-v6
When running iotests, apply "char-socket: Fix race condition"
to avoid sporadic segmentation faults.
v4:
01: Initialization of the COR-filter BDRVStateCOR member.
v3:
01: The COR filter insert/remove functions moved to block/copy-on-read.c
to be a part of API.
02: block/stream.c code refactoring.
03: The separate call to block_job_add_bdrv() is used to block operations
on the active node after the filter inserted and the job created.
04: The iotests case 030::test_overlapping_4 was modified to unbound
the block-stream job from the base node.
05: The COR driver functions preadv/pwritev replaced with their analogous
preadv/pwritev_part.
v2:
01: No more skipping filters while checking for operation blockers.
However, we exclude filters between the bottom node and base
because we do not set the operation blockers for filters anymore.
02: As stated above, we do not set the operation blockers for filters
anymore. So, skip filters when we block operations for the target
node.
03: The comment added for the patch 4/7.
04: The QAPI target version changed to 5.1.
05: The 'filter-node-name' now excluded from using in the test #030.
If we need it no more in a final version of the series, the patch
5/7 may be removed.
06: The COR-filter included into the frozen chain of a block-stream job.
The 'above_base' node pointer is left because it is essential for
finding the base node in case of filters above.
Andrey Shinkevich (7):
block: prepare block-stream for using COR-filter
copy-on-read: Support change filename functions
copy-on-read: Support preadv/pwritev_part functions
copy-on-read: add filter append/drop functions
qapi: add filter-node-name to block-stream
iotests: prepare 245 for using filter in block-stream
block: apply COR-filter to block-stream jobs
Max Reitz (8):
block: Mark commit and mirror as filter drivers
copy-on-read: Support compressed writes
block: Add child access functions
block: Add chain helper functions
block: Include filters when freezing backing chain
block: Use CAFs in block status functions
commit: Deal with filters when blocking intermediate nodes
block: Use CAFs when working with backing chains
block.c | 275 ++++++++++++++++++++++++++++++++++-------
block/commit.c | 85 ++++++++++---
block/copy-on-read.c | 159 ++++++++++++++++++++++--
block/io.c | 19 +--
block/mirror.c | 6 +-
block/monitor/block-hmp-cmds.c | 4 +-
block/stream.c | 89 +++++++++----
blockdev.c | 19 ++-
include/block/block.h | 6 +-
include/block/block_int.h | 67 +++++++++-
qapi/block-core.json | 6 +
tests/qemu-iotests/030 | 17 +--
tests/qemu-iotests/141.out | 2 +-
tests/qemu-iotests/245 | 10 +-
14 files changed, 625 insertions(+), 139 deletions(-)
--
1.8.3.1
