From: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>
To: Or Gerlitz <gerlitz.or-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Cc: "linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>,
Robert Elliott <Elliott-VXdhtT5mjnY@public.gmane.org>,
Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
Subject: Re: [PATCH 5/8] IB/srp: Remove stale connection retry mechanism
Date: Thu, 02 Oct 2014 12:34:36 +0200 [thread overview]
Message-ID: <542D2A3C.2080009@acm.org> (raw)
In-Reply-To: <CAJ3xEMhPKiut4MwZH9F7-T0+u7B6XPuh-FTZpA=Xe4ViAj5UUQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 09/20/14 19:45, Or Gerlitz wrote:
> On Fri, Sep 19, 2014 at 3:58 PM, Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org> wrote:
>> Attempting to connect three times may be insufficient after an
>> initiator system that was using multiple RDMA channels tries to
>> relogin. Additionally, this login retry mechanism is a workaround
>> for particular behavior of the IB/CM.
>
> Can you be more specific re the particular behavior of the IB CM?
> added Sean, the CM maintainer.
Let's focus on the software behavior instead of the people who are
involved. What I have observed several times is that after a power cycle
of the initiator system the first few login attempts are rejected. I was
assuming that this was due to the IB/CM implementation but now that I
have had another look at the logs I see that there is not enough
information in the system logs to draw this conclusion. I will add
additional logging statements in the initiator and target kernel code
such that I can determine the root cause of this behavior.
Bart.
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next prev parent reply other threads:[~2014-10-02 10:34 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-19 12:55 [PATCH RFC 0/8] IB/srp: Add multichannel support Bart Van Assche
2014-09-19 12:56 ` Bart Van Assche
2014-09-19 18:02 ` Sagi Grimberg
2014-09-19 12:57 ` [PATCH 2/8] scsi-mq: Add support for multiple hardware queues Bart Van Assche
[not found] ` <541C281E.9090206-HInyCGIudOg@public.gmane.org>
2014-09-19 18:05 ` Sagi Grimberg
2014-09-19 18:11 ` Christoph Hellwig
[not found] ` <CAF9gx6JfP2bGyMauB6LzepZP_vKEvrd-sPZc5CRuOrtgQ_UCSw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-09-26 11:08 ` Ming Lei
[not found] ` <CACVXFVMiYsW=dszQ6mE-o_L8fEDdkO59vJ5qeHKch5c33K_QXw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-09-26 14:02 ` Bart Van Assche
2014-09-19 12:57 ` [PATCH 3/8] scsi-mq: Pass hctx to low-level SCSI drivers Bart Van Assche
2014-09-19 12:59 ` [PATCH 6/8] IB/srp: Avoid that I/O hangs due to a cable pull during LUN scanning Bart Van Assche
2014-09-19 12:59 ` [PATCH 7/8] IB/srp: Separate target and channel variables Bart Van Assche
2014-09-19 18:47 ` Sagi Grimberg
[not found] ` <541C28C8.7000007-HInyCGIudOg@public.gmane.org>
2014-09-23 16:07 ` Sagi Grimberg
2014-09-23 20:00 ` Bart Van Assche
[not found] ` <541C27BF.6070609-HInyCGIudOg@public.gmane.org>
2014-09-19 12:58 ` [PATCH 4/8] IB/srp: Move ib_destroy_cm_id() call into srp_free_ch_ib() Bart Van Assche
[not found] ` <541C285B.5010309-HInyCGIudOg@public.gmane.org>
2014-09-19 18:10 ` Sagi Grimberg
2014-09-19 12:58 ` [PATCH 5/8] IB/srp: Remove stale connection retry mechanism Bart Van Assche
2014-09-19 18:25 ` Sagi Grimberg
[not found] ` <541C287D.1050900-HInyCGIudOg@public.gmane.org>
2014-09-20 17:45 ` Or Gerlitz
[not found] ` <CAJ3xEMhPKiut4MwZH9F7-T0+u7B6XPuh-FTZpA=Xe4ViAj5UUQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-02 10:34 ` Bart Van Assche [this message]
[not found] ` <542D2A3C.2080009-HInyCGIudOg@public.gmane.org>
2014-10-03 8:51 ` Bart Van Assche
2014-09-19 13:00 ` [PATCH 8/8] IB/srp: Add multichannel support Bart Van Assche
[not found] ` <541C28E0.7010705-HInyCGIudOg@public.gmane.org>
2014-09-19 14:28 ` Ming Lei
[not found] ` <CACVXFVPzz37J-613NZCfPStUBxf0rLOtz71LJ07PpCxYg5nn+g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-09-19 15:21 ` Bart Van Assche
[not found] ` <541C49EC.6030404-HInyCGIudOg@public.gmane.org>
2014-09-19 15:27 ` Ming Lei
2014-09-19 15:35 ` Bart Van Assche
2014-09-19 15:38 ` Jens Axboe
2014-09-19 17:30 ` Sagi Grimberg
2014-09-19 17:33 ` Jens Axboe
2014-09-19 18:11 ` Christoph Hellwig
[not found] ` <541C4DF1.4090604-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-10-01 16:08 ` Bart Van Assche
2014-10-01 16:54 ` Jens Axboe
2014-10-01 21:14 ` Christoph Hellwig
[not found] ` <542C31C4.1020702-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-10-02 16:45 ` Bart Van Assche
2014-10-02 16:55 ` Jens Axboe
[not found] ` <542D8368.8080604-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-10-03 13:01 ` Bart Van Assche
2014-10-03 14:24 ` Jens Axboe
[not found] ` <542D8143.3050305-HInyCGIudOg@public.gmane.org>
2014-10-02 17:30 ` Christoph Hellwig
2014-10-06 11:16 ` Bart Van Assche
[not found] ` <54327A21.6070202-HInyCGIudOg@public.gmane.org>
2014-10-10 20:16 ` Roland Dreier
2014-09-23 16:32 ` Sagi Grimberg
[not found] ` <5421A093.1070203-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-09-23 19:02 ` Bart Van Assche
2014-09-24 12:22 ` Sagi Grimberg
2014-09-24 13:13 ` Bart Van Assche
[not found] ` <5422C395.7090902-HInyCGIudOg@public.gmane.org>
2014-09-24 13:38 ` Sagi Grimberg
[not found] ` <5422C970.4050306-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-09-24 13:43 ` Sagi Grimberg
2014-10-07 12:51 ` Bart Van Assche
[not found] ` <5433E1B5.1030103-HInyCGIudOg@public.gmane.org>
2014-10-13 8:17 ` Sagi Grimberg
[not found] ` <543B8AB0.1090704-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-10-13 8:52 ` Bart Van Assche
2014-10-01 16:14 ` [PATCH RFC] scsi_tcq.h: Add support for multiple hardware queues Bart Van Assche
2014-09-19 18:31 ` [PATCH RFC 0/8] IB/srp: Add multichannel support Jens Axboe
2014-09-22 14:37 ` Christoph Hellwig
[not found] ` <20140922143731.GA15377-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2014-09-22 16:25 ` Bart Van Assche
2014-09-22 16:31 ` Jens Axboe
2014-09-22 16:39 ` Jens Axboe
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