From: Keith Busch <keith.busch@intel.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>, Ming Lei <ming.lei@redhat.com>,
linux-scsi@vger.kernel.org, linux-block@vger.kernel.org,
Martin Petersen <martin.petersen@oracle.com>,
Bart Van Assche <bvanassche@acm.org>
Subject: Re: [PATCHv4 0/3] scsi timeout handling updates
Date: Wed, 28 Nov 2018 10:56:25 -0700 [thread overview]
Message-ID: <20181128175625.GG6401@localhost.localdomain> (raw)
In-Reply-To: <20181128162655.GF6401@localhost.localdomain>
On Wed, Nov 28, 2018 at 09:26:55AM -0700, Keith Busch wrote:
> ---
> diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
> index 9908082b32c4..116398b240e5 100644
> --- a/drivers/nvme/target/loop.c
> +++ b/drivers/nvme/target/loop.c
> @@ -428,10 +428,14 @@ static int nvme_loop_configure_admin_queue(struct nvme_loop_ctrl *ctrl)
> static void nvme_loop_shutdown_ctrl(struct nvme_loop_ctrl *ctrl)
> {
> if (ctrl->ctrl.queue_count > 1) {
> - nvme_stop_queues(&ctrl->ctrl);
> - blk_mq_tagset_busy_iter(&ctrl->tag_set,
> - nvme_cancel_request, &ctrl->ctrl);
> + /*
> + * The back end device driver is responsible for completing all
> + * entered requests
> + */
> + nvme_start_freeze(&ctrl->ctrl);
> + nvme_wait_freeze(&ctrl->ctrl);
> nvme_loop_destroy_io_queues(ctrl);
> + nvme_unfreeze(&ctrl->ctrl);
> }
>
> if (ctrl->ctrl.state == NVME_CTRL_LIVE)
> ---
The above tests fine with io and nvme resets on a target nvme loop
backed by null_blk, but I also couldn't recreate the original report
without the patch.
Ming,
Could you tell me a little more how you set it up? I'm just configuring
null_blk with queue_mode=2 irqmode=2. Anything else to recreate?
Thanks,
Keith
next prev parent reply other threads:[~2018-11-28 17:59 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-26 16:54 [PATCHv4 0/3] scsi timeout handling updates Keith Busch
2018-11-26 16:54 ` [PATCHv4 1/3] blk-mq: Return true if request was completed Keith Busch
2018-11-26 17:00 ` Christoph Hellwig
2018-11-26 16:54 ` [PATCHv4 2/3] scsi: Do not rely on blk-mq for double completions Keith Busch
2018-11-26 17:01 ` Christoph Hellwig
2018-11-26 16:54 ` [PATCHv4 3/3] blk-mq: Simplify request completion state Keith Busch
2018-11-26 17:01 ` Christoph Hellwig
2018-11-26 17:33 ` [PATCHv4 0/3] scsi timeout handling updates Jens Axboe
2018-11-28 2:20 ` Ming Lei
2018-11-28 7:00 ` Christoph Hellwig
2018-11-28 10:07 ` Ming Lei
2018-11-28 10:08 ` Christoph Hellwig
2018-11-28 15:49 ` Keith Busch
2018-11-28 15:58 ` Jens Axboe
2018-11-28 16:26 ` Keith Busch
2018-11-28 16:31 ` Jens Axboe
2018-11-28 17:56 ` Keith Busch [this message]
2018-11-29 1:18 ` Ming Lei
2018-11-28 22:31 ` Keith Busch
2018-11-28 23:36 ` Keith Busch
2018-11-29 17:11 ` Christoph Hellwig
2018-11-29 17:20 ` Keith Busch
2018-12-28 12:47 ` Hannes Reinecke
2018-11-29 2:15 ` Ming Lei
2018-11-29 2:39 ` Martin K. Petersen
2018-11-29 8:12 ` Ming Lei
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