From: Vincent Fu <vincentfu@gmail.com>
To: stelios evagorou <stelios_evagorou@hotmail.com>,
"fio@vger.kernel.org" <fio@vger.kernel.org>,
"axboe@kernel.dk" <axboe@kernel.dk>
Subject: Re: Maximum number of files we can read/write with FIO
Date: Tue, 25 Jul 2023 12:54:45 -0400 [thread overview]
Message-ID: <0f9e734f-ede3-510c-a38c-c51251529484@gmail.com> (raw)
In-Reply-To: <AS4PR07MB8681AC26C1E2CB7796A97463F903A@AS4PR07MB8681.eurprd07.prod.outlook.com>
On 7/25/23 09:47, stelios evagorou wrote:
> Hello,
>
> I was trying to create a job file that has the following form:
>
> [global]
> blocksize=4k
> ioengine=libaio
> readwrite=randwrite
> size=20G
> name=test
> numjobs=32
> group_reporting=1
> file_service_type=random
> iodepth=128
> fallocate=native
> runtime=120
> directory=/tmp/ssfs/home/sevag/fuse_ext4
> [jobs1]
> filename:f1:f2:f3......f8192
>
>
> but when i tried to run it i got the error message "value exceeds max
> length of 4096 fio". Is there anyway to achieve the above setting?
>
> Many thanks,
> Stelios Evagorou
The error occurs because the maximum possible length for the value for
the filename option is set to 4096.
Instead of filename=... try the following:
nrfiles=8192
filename_format=f$filenum
The files will be named f0, f1, ..., f8191.
Vincent
parent reply other threads:[~2023-07-25 16:55 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <AS4PR07MB8681AC26C1E2CB7796A97463F903A@AS4PR07MB8681.eurprd07.prod.outlook.com>]
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