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[209.132.183.28]) by mx.google.com with ESMTPS id a49si1269289qva.62.2019.02.22.09.21.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Feb 2019 09:21:44 -0800 (PST) Received-SPF: pass (google.com: domain of jmoyer@redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; Authentication-Results: mx.google.com; spf=pass (google.com: domain of jmoyer@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=jmoyer@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AFAE3C057F4F; Fri, 22 Feb 2019 17:21:43 +0000 (UTC) Received: from segfault.boston.devel.redhat.com (segfault.boston.devel.redhat.com [10.19.60.26]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E97F85C647; Fri, 22 Feb 2019 17:21:42 +0000 (UTC) From: Jeff Moyer To: Dan Williams Cc: linux-nvdimm , stable , Linux Kernel Mailing List , Vishal L Verma , linux-fsdevel , Linux MM Subject: Re: [PATCH 7/7] libnvdimm/pfn: Fix 'start_pad' implementation References: <155000668075.348031.9371497273408112600.stgit@dwillia2-desk3.amr.corp.intel.com> <155000671719.348031.2347363160141119237.stgit@dwillia2-desk3.amr.corp.intel.com> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 Date: Fri, 22 Feb 2019 12:21:41 -0500 In-Reply-To: (Dan Williams's message of "Fri, 22 Feb 2019 09:12:37 -0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 22 Feb 2019 17:21:43 +0000 (UTC) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Dan Williams writes: >> Great! Now let's create another one. >> >> # ndctl create-namespace -m fsdax -s 132m >> libndctl: ndctl_pfn_enable: pfn1.1: failed to enable >> Error: namespace1.2: failed to enable >> >> failed to create namespace: No such device or address >> >> (along with a kernel warning spew) > > I assume you're seeing this on the libnvdimm-pending branch? Yes, but also on linus' master branch. Things have been operating in this manner for some time. >> I understand the desire for expediency. At some point, though, we have >> to address the root of the problem. > > Well, you've defibrillated me back to reality. We've suffered the > incomplete broken hacks for 2 years, what's another 10 weeks? I'll > dust off the sub-section patches and take another run at it. OK, thanks. Let me know if I can help at all. Cheers, Jeff