From: Jens Axboe <axboe@kernel.dk>
To: Gavin Martin <gavin_martin@xyratex.com>
Cc: fio@vger.kernel.org
Subject: Re: Running Fio to Particular LBA's
Date: Fri, 11 Jan 2013 10:11:46 +0100 [thread overview]
Message-ID: <20130111091146.GB32674@kernel.dk> (raw)
In-Reply-To: <CANUChTws0KGNRVQ=N_WH70LeoN-Kv2V6wjFbnf_VCA4OU9D8wQ@mail.gmail.com>
On Fri, Jan 11 2013, Gavin Martin wrote:
> I'm using Fio to run to raw devices in both Linux & Windows, one thing
> that I am unable to do is to specify an LBA range to run to.
>
> I know that there are the 'zonesize' and 'zoneskip' arguments, but I'm
> struggling to see how they work. In essence I would like to have a
> number of jobs running to different parts of the disk.
>
> In a basic example: from LBA 0 to 1/2 of MaxLBA I would like to run a
> sequential workload and from 1/2 MaxLBA+1 to MaxLBA I would like to
> run a random workload.
>
> Can this be done with existing arguments?
If maxlba is 10G, then you would do:
[global]
size=5G
[seq]
offset=0
rw=write
[rand]
offset=5G
rw=randwrite
Fill in other parameters as needed
--
Jens Axboe
prev parent reply other threads:[~2013-01-11 9:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-11 8:58 Running Fio to Particular LBA's Gavin Martin
2013-01-11 9:11 ` Jens Axboe [this message]
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