On 23 August 2014 02:45, Mark Nelson <mark.a.nelson@xxxxxxxxx> wrote: > Thanks Jens. What I'd like to be able to do is start multiple fio processes > but have each one only write to a non-overlapping portion of the block > device. Preferably I wouldn't have to manually figure out the ranges > myself. Any way to do something like that? A quick Google for "fio zones jobs" tuns up http://www.spinics.net/lists/fio/msg01791.html where the fourth answer on that page seems relevant to your case. For each job (essentially name section) you can set an offset and a size and I/O will be done between offset and offset+size. If you want to move the starting offset of each extra job automatically you could use offset_increment (http://git.kernel.dk/?p=fio.git;a=blob;f=HOWTO;h=73e58ff695c3384df30094d6c15ebe9ed615460f;hb=HEAD#l770 ). You can also use numjobs (http://git.kernel.dk/?p=fio.git;a=blob;f=HOWTO;h=73e58ff695c3384df30094d6c15ebe9ed615460f;hb=HEAD#l1275 ) to automatically create job clones. Perhaps this sort of "parallel non-overlapping zoned I/O" case would be a useful example fio job file (for example I never realised size was relative to offset...)? -- Sitsofe | http://sucs.org/~sits/ -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
