From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754214AbcAHCeI (ORCPT ); Thu, 7 Jan 2016 21:34:08 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:25163 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753718AbcAHCeG (ORCPT ); Thu, 7 Jan 2016 21:34:06 -0500 To: "Luck\, Tony" Cc: "linux-kernel\@vger.kernel.org" , "linux-scsi\@vger.kernel.org" Subject: Re: System "hangs" on kernels > v4.4-rc1 - mpt2sas problem? From: "Martin K. Petersen" Organization: Oracle Corporation References: <3908561D78D1C84285E8C5FCA982C28F39FA658E@ORSMSX114.amr.corp.intel.com> Date: Thu, 07 Jan 2016 21:34:01 -0500 In-Reply-To: <3908561D78D1C84285E8C5FCA982C28F39FA658E@ORSMSX114.amr.corp.intel.com> (Tony Luck's message of "Thu, 7 Jan 2016 22:55:50 +0000") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Tony" == Luck, Tony writes: Tony, Tony> This one has been hard for me to bisect. Partly because it just Tony> takes so long to reboot the servers that have the problem, but Tony> also because there may be more than one thing going on. One thing Tony> that seems pretty certain is that things are OK prior to: We consolidated the mpt2sas and mpt3sas drivers in 4.4. I can see the driver getting loaded (and failing to allocate memory for some reason) in your first log but it's absent in the second. Tony> megaraid_sas: Increase timeout to 60 secs for abort frames Tony> during shutdown megaraid_sas is an entirely different beast from mpt[23]sas. Please let us know which type of controller your disks are hanging off of. -- Martin K. Petersen Oracle Linux Engineering