svn commit: r50167 - head/en_US.ISO8859-1/htdocs/news/status
Benjamin Kaduk <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.cvs.doc |
|---|---|
| Message-ID | <[email protected]> |
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>[email protected]</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 [email protected] 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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