From: Jens Axboe <axboe@kernel.dk>
To: Wallence Lu <wallencelu@gmail.com>
Cc: fio@vger.kernel.org
Subject: Re: A bug in combining fsrange and verify
Date: Mon, 27 Jan 2014 15:46:03 -0700 [thread overview]
Message-ID: <20140127224603.GM2782@kernel.dk> (raw)
In-Reply-To: <CAOpYm_WNfhkyFRofHg6aUfm_nxL7oX8gCc++wNFMproqP1rVeA@mail.gmail.com>
On Mon, Jan 27 2014, Wallence Lu wrote:
> Recreated with fio 2.0.11-35-g8428, the version was checked out from
> https://github.com/axboe/fio.
2.1.4 is the latest, but I don't think that would change anything for
you.
> I read a little bit of the source code, it seems to me the randwrite
> option gets the LBA without specifying the IO size. With that said,
> for a bsrange option, it is likely one random IO can step onto another
> IO if they happen to be adjacent. For example, request A has LBA
> of 1024 and size 8K, request B has LBA 1016 and size 16K. Without
> checking the request size, request B can overwrite content of request
> A.
>
> Is that the right interpretation? Do I miss something? Thanks.
Fio is supposed to handle that, the job file should work. I'll take a
look at it.
--
Jens Axboe
next prev parent reply other threads:[~2014-01-27 22:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-25 2:07 A bug in combining fsrange and verify Wallence Lu
2014-01-27 19:22 ` Jens Axboe
2014-01-27 20:42 ` Wallence Lu
2014-01-27 22:46 ` Jens Axboe [this message]
2014-01-27 23:03 ` Jens Axboe
2014-01-27 23:16 ` Grant Grundler
2014-01-27 23:31 ` Jens Axboe
2014-01-28 0:00 ` Grant Grundler
2014-01-28 17:26 ` Jens Axboe
2014-02-03 22:05 ` Grant Grundler
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