Date: Sun, 16 Apr 2017 00:38:54 +0000 (UTC) From: Benjamin Kaduk <bjk@FreeBSD.org> 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 Message-ID: <201704160038.v3G0csZW012234@repo.freebsd.org>
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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.</task> </help> </project> + + <project cat="kern"> + <title>pNFS server Plan B</title> + + <contact> + <person> + <name> + <given>Rick</given> + <common>Macklem</common> + </name> + <email>rmacklem@FreeBSD.org</email> + </person> + </contact> + + <body> + <p>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.</p> + + <p>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.</p> + + <p>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.</p> + + <p>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.</p> + </body> + + <help> + <task>Testing by others will be needed, once it is available.</task> + </help> + </project> </report>
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