From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 4BABF1A1DF9 for ; Fri, 9 Sep 2016 09:34:23 -0700 (PDT) Date: Fri, 9 Sep 2016 10:34:21 -0600 From: Ross Zwisler Subject: Re: DAX can not work on virtual nvdimm device Message-ID: <20160909163421.GB18554@linux.intel.com> References: <600ac51c-0f61-6e53-9bfa-669c85494d1f@linux.intel.com> <20160829193014.GB16738@linux.intel.com> <61d5c470-a8bf-86d5-d1fe-b4b577a85967@linux.intel.com> <25098f37-53f7-6d5d-0b1a-8469bab51a9f@linux.intel.com> <20160902025738.GA26108@linux.intel.com> <20160906150620.GJ28922@quack2.suse.cz> <20160908204708.GA15167@linux.intel.com> <20160909091925.GF22777@quack2.suse.cz> <20160909140327.r2j64s5xdaxnnxhx@thunk.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20160909140327.r2j64s5xdaxnnxhx@thunk.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Theodore Ts'o , Jan Kara , Ross Zwisler , Xiao Guangrong , linux-ext4@vger.kernel.org, Dan Williams , Yumei Huang , KVM , "linux-nvdimm@lists.01.org" , "qemu-devel@nongnu.org" , LKML , Linux ACPI , Stefan Hajnoczi List-ID: On Fri, Sep 09, 2016 at 10:03:27AM -0400, Theodore Ts'o wrote: > On Fri, Sep 09, 2016 at 11:19:25AM +0200, Jan Kara wrote: > > > > > > 1. make the guest kernel based on your tree, the top commit is > > > > > > 10d7902fa0e82b (dax: unmap/truncate on device shutdown) and > > > > > > the config file can be found in this thread. > > What git tree is 10d7902fa0e82b from? It's from djbw's libnvdimm tree. https://git.kernel.org/cgit/linux/kernel/git/djbw/nvdimm.git/ I don't think that commit is relevant, though. I believe this should reproduce with a vanilla v4.7 tree. I can verify if you'd like. > > Hum, nothing unusual in there. I've tried reproducing on a local SLE11 SP3 > > machine (which is from about the same time) but everything works as > > expected there. Shrug... > > I just tried reproducing it via "gce-xfstests --pmem-device shell" > with a downgraded e2fsprogs to stock upstream 1.42.12, and I can't > reproduce it with the ext4.git tree. I'm not sure whether the git > commit is critical, though. Is this a regression that was working > before? I'm not sure if we've ever tested Centos6/RHEL6 with DAX. It could be that it has never worked. > Or it's possible that Red Hat did something weird with the CentOS 6 > e2fsprogs.... _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm