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From: Oleg Sivokon <oleg.sivokon@replix.io>
Subject: Multiple jobs and fill_device
Date: Wed, 25 Dec 2019 09:11:46 +0000
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To: "fio@vger.kernel.org" <fio@vger.kernel.org>

Hello list,

I'm wondering how the configuration below is interpreted:

    [global]
    ioengine=3Dlibaio
    direct=3D1
    loops=3D1
    numjobs=3D8
   =20
    [write-prep]
    rw=3Dwrite
    filename=3D/dev/sdb
    iodepth=3D16
    bs=3D16k
    fill_device=3D1
    stonewall=3D1

Will every one of the 8 jobs try to fill the device completely or will
they split the task of filling the device between themselves, where each
will do only 1/8 of filling the device?  My reading of documentation
seems to suggest the device will be filled 8 times, with jobs, possibly,
stepping on each other's toes (i.e. contesting the same block), but I'm
not sure.

Best.

Oleg