Hi all! v4: Now based on master 01: add assertion and r-b 02: s/7.0/7.1/ and r-b 03: switch to QEMUMachine, touch-up pylintrc, drop r-b 04,05,06: add r-b 07: switch to QEMUMachine
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. 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 qapi/block-core.json | 31 ++- include/block/block-copy.h | 4 +- include/qemu/coroutine.h | 13 ++ block/block-copy.c | 33 ++- block/copy-before-write.c | 111 ++++++--- util/qemu-co-timeout.c | 89 ++++++++ tests/qemu-iotests/pylintrc | 5 + tests/qemu-iotests/tests/copy-before-write | 213 ++++++++++++++++++ .../qemu-iotests/tests/copy-before-write.out | 5 + util/meson.build | 1 + 10 files changed, 466 insertions(+), 39 deletions(-) create mode 100644 util/qemu-co-timeout.c create mode 100755 tests/qemu-iotests/tests/copy-before-write create mode 100644 tests/qemu-iotests/tests/copy-before-write.out -- 2.35.1