From owner-svn-doc-head@freebsd.org Mon Jul 3 16:48:38 2017 Return-Path: Delivered-To: svn-doc-head@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 C95D89EAD74; Mon, 3 Jul 2017 16:48:38 +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 A2A1D774A2; Mon, 3 Jul 2017 16:48:38 +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 v63Gmb1v094671; Mon, 3 Jul 2017 16:48:37 GMT (envelope-from bjk@FreeBSD.org) Received: (from bjk@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v63Gmb82094670; Mon, 3 Jul 2017 16:48:37 GMT (envelope-from bjk@FreeBSD.org) Message-Id: <201707031648.v63Gmb82094670@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bjk set sender to bjk@FreeBSD.org using -f From: Benjamin Kaduk Date: Mon, 3 Jul 2017 16:48:37 +0000 (UTC) To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r50439 - head/en_US.ISO8859-1/htdocs/news/status X-SVN-Group: doc-head X-SVN-Commit-Author: bjk X-SVN-Commit-Paths: head/en_US.ISO8859-1/htdocs/news/status X-SVN-Commit-Revision: 50439 X-SVN-Commit-Repository: doc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-doc-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the doc tree for head List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Jul 2017 16:48:38 -0000 Author: bjk Date: Mon Jul 3 16:48:37 2017 New Revision: 50439 URL: https://svnweb.freebsd.org/changeset/doc/50439 Log: Add 2017Q2 pNFS server entry from rmacklem Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2017-04-2017-06.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2017-04-2017-06.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2017-04-2017-06.xml Mon Jul 3 08:57:31 2017 (r50438) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2017-04-2017-06.xml Mon Jul 3 16:48:37 2017 (r50439) @@ -653,4 +653,62 @@ Write the remaining 75% of the book. + + + pNFS Werver Plan B + + + + + Rick + Macklem + + rmacklem@FreeBSD.org + + + + + Testing Instructions + + + +

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 file servers, with the potential + for data access to occur in parallel. The pNFS + "layout" in use specifies how the division occurs, with + metadata operations occurring against the main server, and + bulk data operations (read/write/setattr/etc.) occurring via + a layout-specific scheme between the client and data + servers.

+ +

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 multiple &os; servers configured to serve + data, is now ready for third party testing. If testing by + third parties goes well, I anticipate the code will be + merged into &os; head in time for &os; 12. Fairly + recent &os; or Linux systems should be usable as pNFS + clients for testing. This server supports the File Layout, + which is supported by both of these clients.

+ +

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 not + supported, and I have no plans for implementing this at the + moment.

+ +

The patched &os; sources may now be accessed for testing + via either Subversion or download of a gzipped tarball. + They consist of a patched kernel plus nfsd daemon and can be + used on any &os; 11 or later system.

+ + + + Testing by others will be needed, now that the code is + available. + +