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From: Johannes Thumshirn <jthumshirn@suse.de>
To: Max Gurtovoy <maxg@mellanox.com>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	Jens Axboe <axboe@fb.com>, Ming Lei <ming.lei@redhat.com>,
	linux-nvme@lists.infradead.org
Subject: Re: how can one drain MQ request queue ?
Date: Tue, 20 Feb 2018 11:13:11 +0100	[thread overview]
Message-ID: <20180220101311.aoe7m57kwm5ejb2a@linux-x5ow.site> (raw)
In-Reply-To: <a8d50fdf-1ed9-1f10-1ac9-4cbbf223cb8b@mellanox.com>

On Tue, Feb 20, 2018 at 11:56:07AM +0200, Max Gurtovoy wrote:
> hi all,
> is there a way to drain a blk-mq based request queue (similar to
> blk_drain_queue for non MQ) ?

I _think_ you can do a echo run >
/sys/kernel/debug/block/nvmeXnX/hctxX/state and that should trigger
it.

Hope that helps.

Byte,
     Johannes

-- 
Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N�rnberg
GF: Felix Imend�rffer, Jane Smithard, Graham Norton
HRB 21284 (AG N�rnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850

  reply	other threads:[~2018-02-20 10:13 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-20  9:56 how can one drain MQ request queue ? Max Gurtovoy
2018-02-20 10:13 ` Johannes Thumshirn [this message]
2018-02-22  2:59 ` Ming Lei
2018-02-22 10:56   ` Max Gurtovoy
2018-02-22 13:10     ` Ming Lei
2018-02-22 13:39       ` Ming Lei

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