From: "Wunderlich, Mark" <mark.wunderlich@intel.com>
To: Sagi Grimberg <sagi@grimberg.me>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>
Subject: RE: Sighting: Kernel fault with large write (512k) and io_uring
Date: Tue, 24 Mar 2020 16:31:38 +0000 [thread overview]
Message-ID: <MW3PR11MB46848AC6E0AB0B10A2792704E5F10@MW3PR11MB4684.namprd11.prod.outlook.com> (raw)
In-Reply-To: <e9a4b2c7-5dec-296d-be6c-880afa8869c3@grimberg.me>
>>> Does the I/O timeout only happens when you run polling mode (hipri)? Or does it happen for non-polling I/O as well?
>>
>> So far have not seen a failure with io_uring (not setting hipri) or using libaio for same I/O pattern. Only when hipri is set have I been able to reproduce the recovery failure.
>
>This also reproduces without the POLLING patch correct?
Yes, I reproduced the original reported failure on the baseline nvme-5.6-rc6 branch with no other patches applied, running in polling mode using FIO 'hipri' option to io_uring engine. Also could not re-create failure, as indicated just above, for libaio or io_uring NOT using 'hipri' option.
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next prev parent reply other threads:[~2020-03-24 16:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 23:37 Sighting: Kernel fault with large write (512k) and io_uring Wunderlich, Mark
2020-03-19 1:12 ` Sagi Grimberg
2020-03-19 2:33 ` Jens Axboe
2020-03-23 21:07 ` Wunderlich, Mark
2020-03-23 21:11 ` Sagi Grimberg
2020-03-23 21:18 ` Sagi Grimberg
2020-03-23 22:04 ` Wunderlich, Mark
2020-03-23 22:09 ` Sagi Grimberg
2020-03-23 23:16 ` Wunderlich, Mark
2020-03-23 23:29 ` Sagi Grimberg
2020-03-23 23:45 ` Wunderlich, Mark
2020-03-23 23:48 ` Sagi Grimberg
2020-03-24 0:34 ` Wunderlich, Mark
2020-03-24 1:29 ` Sagi Grimberg
2020-03-24 16:31 ` Wunderlich, Mark [this message]
2020-03-24 19:13 ` Sagi Grimberg
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