On 1/13/22 20:47, Robert Balogh wrote: > hello FIO experts, > > I am a beginner in FIO, and I met with a problem. > > Currently in my Ubuntu based server the "/dev/vdb1" volume is attached > to the "/home/batman/fio/cindervolume" path. FIO job is configured > like this > > [global] > filename=fio-172_20_2_13 > directory=/home/batman/fio/cindervolume rw=rw > rwmixread=60 > rwmixwrite=40 > bs=4k > rate=500k > direct=1 > numjobs=1 > time_based=1 > runtime=14d > verify=crc32c > continue_on_error=all > group_reporting=1 > > [file1] > iodepth=1 > ; -- end job file -- > > FIO is started like this and works well: > /usr/bin/fio --size=10G > --output=/home/batman/fio/cindervolume/fio-172_20_2_13-process.log > /home/batman/fioApp/fio-seq-RW.job & > > FIO version I use: fio-3.25 > > My next step would be to attach a 2nd volume for example "/dev/vdc" to > "/home/batman/fio/cindervolume-2" path, and I would do performance > measurement between the volumes. I was checking the FIO user’s guide, > https://fio.readthedocs.io/en/latest/fio_doc.html but unfortunately I > cannot figure out which parameter might help me to solve this topic. > > By-the-way is this possible to do with FIO? If so, could you please > help me by giving some direction/hints? Move the directory=/... option from global section into the job section and add a job for your other volume with directory= again added in that job section to point to the new volume directory. The 2 jobs will run simultaneously targetting different volumes, unless you add "stonewall", in which case the jobs will run one after the other. Or you could just write another fio script for the second volume. It is not clear if you want to run the perf tests on the 2 volumes in parallel or one after the other. > > thanks for your help, > > /Robi -- Damien Le Moal Western Digital Research
