On 2012-05-09 22:52, Vikram Seth wrote: > On Wed, May 2, 2012 at 5:25 AM, Georg Schönberger > <gschoenberger@xxxxxxxxxxxxxxxx> wrote: >> Am 2012-05-02 14:15, schrieb Jens Axboe: >>> On 05/02/2012 02:12 PM, Georg Schönberger wrote: >>>> Same error after a clean compilation. >>>> $ fio --version >>>> fio-2.0.7-13-g3b7f >>>> $ fio --create_only --name=test-read-4k-4G-1-jobs --directory=./tests >>>> --rw=read --size=10M --bs=4k --numjobs=4 >>>> max value out of range: 4 (1 max) >>>> max value out of range: 4 (1 max) >>> Please don't top post, reply beneath what you are replying to. >>> >>> Parser looks confused, because you forgot to add the value for the >>> create_only option. If you use --create_only=1 instead, it should work. >>> >>> I wonder why that isn't caught in the command line variant, if you put >>> it in a job file it does catch it: >>> >>> axboe@nelson:/home/axboe/git/fio $ ./fio seq-null >>> Option create_only requires an argument >>> fio: failed parsing create_only >>> fio: job global dropped >>> >>> I'll take a look at that separately. >>> >> That works now: >> $ fio --create_only=1 --name=test --directory=./tests --rw=read >> --size=10M --bs=4k --numjobs=4 >> test: (g=0): rw=read, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 >> ... >> test: (g=0): rw=read, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 >> fio-2.0.7-13-g3b7f >> Starting 4 processes >> test: Laying out IO file(s) (1 file(s) / 10MB) >> test: Laying out IO file(s) (1 file(s) / 10MB) >> test: Laying out IO file(s) (1 file(s) / 10MB) >> test: Laying out IO file(s) (1 file(s) / 10MB) >> >> >> Run status group 0 (all jobs): >> $ ls tests/ >> test.1.0 test.2.0 test.3.0 test.4.0 >> >> Nice! >> Thanks, Georg >> >> P.S.: Sorry for top posting >> >> >> -- >> 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 > > Hi Jens, > > Does this mean that if we create the files with appropriate names and > size before starting fio, then fio will not lay them out explicitly? > Just confirming .. this will be very useful (reduce runtime) when > performing tests on large filesystems. It does, yes, or you can just use this create_only option for the same effect. Fio uses repeatable file names, it always has. -- Jens Axboe -- 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
