From owner-svn-doc-all@freebsd.org Sun Apr 16 00:38:55 2017 Return-Path: Delivered-To: svn-doc-all@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 41BAED2A6B3; Sun, 16 Apr 2017 00:38:55 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id EC80C1FD0; Sun, 16 Apr 2017 00:38:54 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v3G0csDD012235; Sun, 16 Apr 2017 00:38:54 GMT (envelope-from bjk@FreeBSD.org) Received: (from bjk@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v3G0csZW012234; Sun, 16 Apr 2017 00:38:54 GMT (envelope-from bjk@FreeBSD.org) Message-Id: <201704160038.v3G0csZW012234@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bjk set sender to bjk@FreeBSD.org using -f From: Benjamin Kaduk Date: Sun, 16 Apr 2017 00:38:54 +0000 (UTC) To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r50167 - head/en_US.ISO8859-1/htdocs/news/status X-SVN-Group: doc-head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-doc-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire doc trees \(except for " user" , " projects" , and " translations" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Apr 2017 00:38:55 -0000 Author: bjk Date: Sun Apr 16 00:38:53 2017 New Revision: 50167 URL: https://svnweb.freebsd.org/changeset/doc/50167 Log: Add 2017Q1 pNFS entry from rmacklem Some additions to the introductory material by me, as well. Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2017-01-2017-03.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2017-01-2017-03.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2017-01-2017-03.xml Sat Apr 15 20:21:33 2017 (r50166) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2017-01-2017-03.xml Sun Apr 16 00:38:53 2017 (r50167) @@ -244,4 +244,53 @@ least 3 more bits out, one at each level. + + + pNFS server Plan B + + + + + Rick + Macklem + + rmacklem@FreeBSD.org + + + + +

Parallel NFS (pNFS) is an extension to the NFSv4 protocol that + allows for file accesses within a single logical mount to be + performed against multiple NFS file servers, "in parallel". + Thus, a pNFS server separats the MetaData operations from the + Data operations (Read/Write/Setattr of size N), letting + existing NFSv3 servers be used for the bulk data storage + while still taking advantage of NFSv4 protocol enhancements, + among other things.

+ +

My first attempt at a pNFS server using GlusterFS was a dud. + It worked, but performance was so poor that it was not + usable. This attempt that I call Plan B, only uses &os;, + with one &os; server handling the MetaData operations and K + &os; servers configured to serve Data. An NFSv4.1 client + that supports the pNFS File Layout will be able to + Read/Write to the Data servers directly, spreading out the + RPC load and allowing growth beyond that of what a single + &os; NFS server could achieve.

+ +

There is no support for the Flex Files Layout or mirroring + at this time. I hope to use the Flex Files Layout to add + mirroring support over the next year or so. Striping is + also not supported, but I have no plans for implementing it + at the moment.

+ +

Plan B is working quite well now and should be available + for testing by the end of April. I will announce how to do this on + the freebsd-fs@FreeBSD.org mailing list when it is available.

+ + + + Testing by others will be needed, once it is available. + +