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From: Tejun Heo <tj@kernel.org>
To: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Ming Lei <tom.leiming@gmail.com>, Jens Axboe <axboe@fb.com>,
	Christoph Hellwig <hch@lst.de>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Akinobu Mita <akinobu.mita@gmail.com>
Subject: Re: [PATCH 3/3] blk-mq: Fix the queue freezing mechanism
Date: Thu, 24 Sep 2015 18:56:19 -0400	[thread overview]
Message-ID: <20150924225619.GA27791@htj.duckdns.org> (raw)
In-Reply-To: <56047F1A.1060804@sandisk.com>

Hello, Bart.

On Thu, Sep 24, 2015 at 03:54:18PM -0700, Bart Van Assche wrote:
> Sorry that I had not yet made this clear but I agreed with the analysis in
> your two most recent e-mails. I think I have found the cause of the loop:
> for one or another reason the scsi_dh_alua driver was not loaded
> automatically. I think that caused the SCSI core to return a retryable error
> code for reads and writes sent over paths in the SCSI ALUA state "standby"
> instead of a non-retryable error code and that that caused the dm-mpath
> driver to enter an infinite loop. Loading the scsi_dh_alua driver resolved
> the infinite loop. Anyway, thank you for the feedback.

Great!  I think we still probably wanna fix the kill/reinit race tho.

Thanks.

-- 
tejun

  reply	other threads:[~2015-09-24 22:56 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-23 22:11 [PATCH 0/3] Block layer patches for kernel v4.4 Bart Van Assche
2015-09-23 22:12 ` [PATCH 1/3] blk-cgroup: Declare local symbols static Bart Van Assche
2015-09-25 15:35   ` Tejun Heo
2015-09-23 22:12 ` [PATCH 2/3] bsg: Add sparse annotations to bsg_request_fn() Bart Van Assche
2015-09-23 22:14 ` [PATCH 3/3] blk-mq: Fix the queue freezing mechanism Bart Van Assche
2015-09-24  3:22   ` Ming Lei
2015-09-24 16:43     ` Bart Van Assche
2015-09-24 16:53       ` Tejun Heo
2015-09-24 17:35         ` Bart Van Assche
2015-09-24 17:49           ` Tejun Heo
2015-09-24 18:09             ` Bart Van Assche
2015-09-24 18:14               ` Tejun Heo
2015-09-24 22:54                 ` Bart Van Assche
2015-09-24 22:56                   ` Tejun Heo [this message]
2015-09-24 19:04     ` Bart Van Assche

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