I am seeking advice on whether it is possible to upgrade the ublksrv version without terminating the daemon abruptly. Specifically, I would like the daemon to exit gracefully, ensuring all necessary cleanups are performed. In my current implementation, I attempted to cancel all ublk uring SQEs (specifically the COMMIT_AND_FETCH_REQ/FETCH_REQ operations) using the following approach: io_uring_prep_cancel_fd(sqe, cdev_fd, IORING_ASYNC_CANCEL_ALL);io_uring_prep_cancel_fd(sqe, cdev_fd, IORING_ASYNC_CANCEL_ALL); However, this method does not seem to be effective. In my scenario, I have a single io_uring instance that serves multiple devices and other producers, so simply stopping the polling of CQEs is not a viable solution due to potential race conditions. Could you please provide any suggestions or guidance on how to achieve a graceful upgrade of the ublksrv version without causing disruptions? Thank you
