linux-kernel - Re: Zoned block device support for fio

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Date:   Wed, 15 Aug 2018 18:07:54 +0000
From:   Bart Van Assche <Bart.VanAssche@....com>
To:     "mb@...htnvm.io" <mb@...htnvm.io>,
        "axboe@...nel.dk" <axboe@...nel.dk>,
        "loberman@...hat.com" <loberman@...hat.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        Damien Le Moal <Damien.LeMoal@....com>
Subject: Re: Zoned block device support for fio

On Thu, 2018-08-09 at 15:03 -0600, Jens Axboe wrote:
> Yes exactly. Basically come up with something that just maps fio zones on
> top of SMR zones. Then come up with something that allows you to have
> sequential writes IO within a zone, and something that allows you to decide
> how many zones to use, when to skip between zones, etc.

Hello Jens,

SMR support for fio has been reworked. The reworked patches are available at
https://github.com/axboe/fio/pull/585. The following two test scripts allow to
verify whether the fio behavior is identical for SMR and non-SMR storage media:
* t/zbd/run-tests-against-regular-nullb
* t/zbd/run-tests-against-zoned-nullb

Thanks,

Bart.