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-vsement...@openvz.org> Supersedes: <20220302162442.2052461-1-vsement...@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
