Hi all! Honestly, I don't know why QEMU_CLOCK_VIRTUAL is used here. Comment say that that's specially for throttle tests, but the simple test (patch 02) just hangs because QEMU_CLOCK_VIRTUAL clock just doesn't tick in this environment.. And if we change the clock to QEMU_CLOCK_REALTIME, new test works, and old tests work as well.
What the relation between QEMU_CLOCK_VIRTUAL, qtest and throttle? This code is here since "throttle: Add throttle group support" of 2015.. Vladimir Sementsov-Ogievskiy (2): block/throttle-groups: use QEMU_CLOCK_REALTIME for qtest too iotests: add throttle test block/throttle-groups.c | 4 --- tests/qemu-iotests/tests/throttle | 50 +++++++++++++++++++++++++++ tests/qemu-iotests/tests/throttle.out | 0 3 files changed, 50 insertions(+), 4 deletions(-) create mode 100755 tests/qemu-iotests/tests/throttle create mode 100644 tests/qemu-iotests/tests/throttle.out -- 2.35.1
