On 9/3/19 5:49 AM, Jeff Moyer wrote: > Jens Axboe <axboe@xxxxxxxxx> writes: > >> On 8/29/19 10:38 AM, Jeff Moyer wrote: >>> Hi, >>> >>> sqthread_poll requires registered files in order to work. That's not >>> implemented in fio, and I don't see how one would go about it (but I'm >>> not all that familiar with fio's architecture). We basically need all >>> files to be opened before we can register them. It looks to me as >>> though the files are opened on demand, after the io engine is >>> initialized. >>> >>> Any suggestions? >> >> Leftover from previously, when that requirement wasn't there... Using >> it from fio would require a little bit of footwork, but it's not >> impossible. > > OK, if you can point me in the right direction, I'll take a stab at it. I think if we impose the restriction that the total number of files used must fit in a registered file set, it isn't too hard. Just have the engine open the files when it starts, and provide a new ->open_file() (and ->close_file()) in the engine ops. I'll take a stab at it. -- Jens Axboe
