linux-kernel - Re: [PATCH v6] NVMe: conversion to blk-mq

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Date:	Mon, 9 Jun 2014 08:00:45 +0200
From:	Matias Bjørling <m@...rling.me>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Matthew Wilcox <willy@...ux.intel.com>,
	Keith Busch <keith.busch@...el.com>,
	"Sam Bradshaw (sbradshaw)" <sbradshaw@...ron.com>,
	Jens Axboe <axboe@...com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-nvme@...ts.infradead.org
Subject: Re: [PATCH v6] NVMe: conversion to blk-mq

On Mon, Jun 9, 2014 at 6:35 AM, Ming Lei <tom.leiming@...il.com> wrote:
> On Fri, Jun 6, 2014 at 8:20 PM, Matias Bjørling <m@...rling.me> wrote:
>> This converts the current NVMe driver to utilize the blk-mq layer.
>
> Looks it can't be applied cleanly against 3.15-rc8 + Jens's for-linux
> branch, when I fix the conflict manually, below failure is triggered:
>
> [  487.696057] nvme 0000:00:07.0: Cancelling I/O 202 QID 1
> [  487.699005] nvme 0000:00:07.0: Aborting I/O 202 QID 1
> [  487.704074] nvme 0000:00:07.0: Cancelling I/O 202 QID 1
> [  487.717881] nvme 0000:00:07.0: Aborting I/O 202 QID 1
> [  487.736093] end_request: I/O error, dev nvme0n1, sector 91532352
> [  487.747378] nvme 0000:00:07.0: completed id 0 twice on queue 0
>
>
> when running fio randread(libaio, iodepth:64) with more than 3 jobs.
>
> And looks no such failure when jobs is 1 or 2.

Can you try with the nvmemq_review branch at

https://github.com/MatiasBjorling/linux-collab.git

I'll take a look tomorrow and see if I can reproduce it. Thanks!

>
> Thanks,
> --
> Ming Lei
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