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From: Ming Lei <ming.lei@redhat.com>
To: fio@vger.kernel.org
Subject: Can't setup io_uring for buffered IO
Date: Mon, 16 Aug 2021 20:02:27 +0800	[thread overview]
Message-ID: <YRpT0019mbS1jSE4@T590> (raw)

Hello Guys,

I tried to use the following script to run buffered io with io_uring,
but looks it always complains with 'Operation not supported', and any
idea to make it working?

++ /root/git/fio/fio --readonly --name=onessd --filename=/dev/nvme0n1 --filesize=16m --rw=randread --bs=4k --direct=0 --overwrite=0 --numjobs=1 --iodepth=1 --time_based=1 --runtime=1 --ioengine=io_uring --registerfiles --fixedbufs --hipri=1 --gtod_reduce=1 --group_reporting
onessd: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=io_uring, iodepth=1
fio-3.25-229-gdf9e8
Starting 1 process
fio: io_u error on file /dev/nvme0n1: Operation not supported: read offset=1011712, buflen=4096
fio: pid=3278, err=95/file:io_u.c:1841, func=io_u error, error=Operation not supported

onessd: (groupid=0, jobs=1): err=95 (file:io_u.c:1841, func=io_u error, error=Operation not supported): pid=3278: Mon Aug 16 12:01:17 2021



Thanks,
Ming



             reply	other threads:[~2021-08-16 12:03 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-16 12:02 Ming Lei [this message]
2021-08-16 14:50 ` Can't setup io_uring for buffered IO Ming Lei
2021-08-17 18:28   ` Jens Axboe

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