From owner-freebsd-scsi@freebsd.org Thu Jun 1 15:36:41 2017 Return-Path: Delivered-To: freebsd-scsi@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 82991AFFAD8 for ; Thu, 1 Jun 2017 15:36:41 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mx0.gentlemail.de (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1E5707F241; Thu, 1 Jun 2017 15:36:40 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mh0.gentlemail.de (mh0.gentlemail.de [78.138.80.135]) by mx0.gentlemail.de (8.14.5/8.14.5) with ESMTP id v51FabCJ081851; Thu, 1 Jun 2017 17:36:37 +0200 (CEST) (envelope-from freebsd@omnilan.de) Received: from titan.inop.mo1.omnilan.net (titan.inop.mo1.omnilan.net [IPv6:2001:a60:f0bb:1::3:1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mh0.gentlemail.de (Postfix) with ESMTPSA id 776B9F32; Thu, 1 Jun 2017 17:36:37 +0200 (CEST) Message-ID: <59303484.1040609@omnilan.de> Date: Thu, 01 Jun 2017 17:36:36 +0200 From: Harry Schmalzbauer Organization: OmniLAN User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; de-DE; rv:1.9.2.8) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: Stephen Mcconnell CC: freebsd-scsi@freebsd.org, Scott Long Subject: Re: mps(4) blocks panic-reboot References: <592FDE8C.1090609@omnilan.de> 12a36df9eff99c77ec621987efbe75fe@mail.gmail.com In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Greylist: ACL 129 matched, not delayed by milter-greylist-4.2.7 (mx0.gentlemail.de [78.138.80.130]); Thu, 01 Jun 2017 17:36:37 +0200 (CEST) X-Milter: Spamilter (Reciever: mx0.gentlemail.de; Sender-ip: 78.138.80.135; Sender-helo: mh0.gentlemail.de; ) X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Jun 2017 15:36:41 -0000 Bezüglich Stephen Mcconnell's Nachricht vom 01.06.2017 17:25 (localtime): > I found a couple of emails between me and Scott a while back and we talked > about this. The problem is that the SSU handling relies on interrupts, but > interrupts stop due to the panic, so it hangs. Scott came up with a way > around it but we never decided on a final fix and then it was forgotten > about. If you have a way to reproduce this, I can try to find a fix here. > Or, I might be able to force the system to panic at the right time. Thank you very much for your attention! I remember haveing read some discussion about that topic but thought it was fixed and haven't searched any further; thanks for doing that job :-) I can reproduce at any time, willing to test anything (which I can get to compile on stable/11)! This is a semi-productive machine where I evaluate some netmap/bhyve options/stragtegies. Thanks, -harry