From patchwork Wed Mar 6 01:33:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 10840301 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D7E02180E for ; Wed, 6 Mar 2019 01:46:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BBB652D07F for ; Wed, 6 Mar 2019 01:46:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AF92D2D09F; Wed, 6 Mar 2019 01:46:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 694AD2D07F for ; Wed, 6 Mar 2019 01:46:40 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 19A40211D56B2; Tue, 5 Mar 2019 17:46:40 -0800 (PST) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=134.134.136.100; helo=mga07.intel.com; envelope-from=dan.j.williams@intel.com; receiver=linux-nvdimm@lists.01.org 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 BA813211D56AB for ; Tue, 5 Mar 2019 17:46:38 -0800 (PST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Mar 2019 17:46:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,446,1544515200"; d="scan'208";a="304726915" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.16]) by orsmga005.jf.intel.com with ESMTP; 05 Mar 2019 17:46:37 -0800 Subject: [ndctl PATCH 0/5] ndctl: Optimize label operations From: Dan Williams To: linux-nvdimm@lists.01.org Date: Tue, 05 Mar 2019 17:33:59 -0800 Message-ID: <155183603979.191625.11689546261255336448.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-2-gc94f MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP In almost all use cases ndctl was reading more label data than necessary to carry out tasks like "init-labels" and the auto-label capability of "create-namespace". Outside of index-block scoped operations above, there is utility in being able to specify an extent range smaller than the full capacity to "{read,write,zero}-labels". Deploy optimizations to only operate on the index blocks when possible, and allow for custom extents for the generic operations. --- Dan Williams (5): ndctl/dimm: Support small label reads/writes ndctl/dimm: Minimize data-transfer for init-labels ndctl/dimm: Add offset and size options to {read,write,zero}-labels ndctl/dimm: Limit read-labels with --index option ndctl/namespace: Minimize label data transfer for autolabel Documentation/ndctl/labels-options.txt | 9 +++ ndctl/dimm.c | 88 ++++++++++++++++++-------- ndctl/lib/dimm.c | 85 +++++++++++++++++++++++-- ndctl/lib/libndctl.c | 107 ++++++++++++++++++++++++++++---- ndctl/lib/libndctl.sym | 5 + ndctl/lib/private.h | 4 - ndctl/libndctl.h | 9 +++ ndctl/namespace.c | 2 - util/util.h | 4 + 9 files changed, 260 insertions(+), 53 deletions(-)