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[PATCH v2 0/7] copy-before-write: on-cbw-error and cbw-timeout
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[PATCH v2 0/7] copy-before-write: on-cbw-error and cbw-timeout |
Date: |
Fri, 1 Apr 2022 12:19:13 +0300 |
Hi all!
Here are two new options for copy-before-write filter:
on-cbw-error allows to alter the behavior on copy-before-write operation
failure: not break guest write but break the snapshot (and therefore
backup process)
cbw-timeout allows to limit cbw operation by some timeout.
So, for example, using cbw-timeout=60 and on-cbw-error=break-snapshot
you can be sure that guest write will not stuck for more than 60
seconds and will never fail due to backup problems.
This series unites and fixes my
"[PATCH 0/3] block: copy-before-write: on-cbw-error behavior" and
"[PATCH 0/4] block: copy-before-write: cbw-timeout"
Supersedes: <20220301205929.2006041-1-vsementsov@openvz.org>
Supersedes: <20220302162442.2052461-1-vsementsov@openvz.org>
Vladimir Sementsov-Ogievskiy (7):
block/copy-before-write: refactor option parsing
block/copy-before-write: add on-cbw-error open parameter
iotests: add copy-before-write: on-cbw-error tests
util: add qemu-co-timeout
block/block-copy: block_copy(): add timeout_ns parameter
block/copy-before-write: implement cbw-timeout option
iotests: copy-before-write: add cases for cbw-timeout option
block/block-copy.c | 26 ++-
block/copy-before-write.c | 136 +++++++++---
include/block/block-copy.h | 2 +-
include/qemu/coroutine.h | 13 ++
qapi/block-core.json | 30 ++-
tests/qemu-iotests/tests/copy-before-write | 206 ++++++++++++++++++
.../qemu-iotests/tests/copy-before-write.out | 5 +
util/meson.build | 1 +
util/qemu-co-timeout.c | 89 ++++++++
9 files changed, 464 insertions(+), 44 deletions(-)
create mode 100755 tests/qemu-iotests/tests/copy-before-write
create mode 100644 tests/qemu-iotests/tests/copy-before-write.out
create mode 100644 util/qemu-co-timeout.c
--
2.35.1