Re: [PATCH v7 7/8] selftests: ublk: add test for per io daemons

On Tue, May 27, 2025 at 05:01:30PM -0600, Uday Shankar wrote:

Add a new test test_generic_12 which:

• sets up a ublk server with per_io_tasks and a different number of ublk server threads and ublk_queues. This is possible now that these objects are decoupled
• runs some I/O load from a single CPU
• verifies that all the ublk server threads handle some I/O

Before this changeset, this test fails, since I/O issued from one CPU is always handled by the one ublk server thread. After this changeset, the test passes.

In the future, the last check above may be strengthened to "verify that all ublk server threads handle the same amount of I/O." However, this requires some adjustments/bugfixes to tag allocation, so this work is postponed to a followup.

Signed-off-by: Uday Shankar ushankar@purestorage.com

Reviewed-by: Ming Lei ming.lei@redhat.com

Thanks, Ming