On 12/01/2021 11:23, hch@xxxxxxxxxxxxx wrote: > On Mon, Jan 11, 2021 at 10:17:53AM +0000, Johannes Thumshirn wrote: >> On 22/12/2020 14:40, Christoph Hellwig wrote: >>> I just did a very quick look, but didn't see anything (based on the >>> subjects) that deals with ITER_BVEC direct I/O. Is the support for that >>> hidden somewhere? >> >> I couldn't reproduce the problem you reported and asked for a reproducer. Probably >> the mail got lost somewhere. >> >> Do you have a reproducer for me that triggers the problem? fio with --ioengine=io_uring >> didn't do the job on my end. > > I've only found this by auditing the code. But the reproducer should > be io_uring with fixed buffers, alternatively using the nvme target > driver with a btrfs file as the backend. > OK, as fio with io_uring didn't trigger, lemme check if I can trigger it with the nvme target code.
