From mboxrd@z Thu Jan 1 00:00:00 1970 From: axboe@fb.com (Jens Axboe) Date: Mon, 9 Jun 2014 08:08:50 -0600 Subject: [PATCH v6] NVMe: conversion to blk-mq In-Reply-To: References: <1402057225-7312-1-git-send-email-m@bjorling.me> <1402057225-7312-2-git-send-email-m@bjorling.me> Message-ID: <5395BFF2.2080402@fb.com> On 2014-06-08 22:35, Ming Lei wrote: > On Fri, Jun 6, 2014@8:20 PM, Matias Bj?rling 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. It's a known issue, make sure you have this patch: http://git.kernel.dk/?p=linux-block.git;a=commit;h=f6be4fb4bcb396fc3b1c134b7863351972de081f -- Jens Axboe