On Tue, Apr 17, 2018 at 04:21:36PM +0100, Alan Jenkins wrote: > > Without this fix, I get an IO error in this test: > > > > # dd if=/dev/sda of=/dev/null iflag=direct & \ > > while killall -SIGUSR1 dd; do sleep 0.1; done & \ > > echo mem > /sys/power/state ; \ > > sleep 5; killall dd # stop after 5 seconds > > linux-block specifically asked for a test derived from this reproducer. > They didn't come up with any suggestion for testing the code more directly > (and robustly). So this test uses system suspend, automated with pm_test. > > Signed-off-by: Alan Jenkins <alan.christopher.jenkins@xxxxxxxxx> Hi, Alan, thanks for the test. I was able to come up with a deterministic reproducer which runs in a few seconds, added here: https://github.com/osandov/blktests/blob/master/tests/block/016.
