svn commit: r50229 - 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: Thu May 4 03:51:12 2017
New Revision: 50229
URL: https://svnweb.freebsd.org/changeset/doc/50229
Log:
Some corrections to the 2017Q1 pNFS entry
I had mixed up the File Layout and Flex File Layout; only the latter
allows NFSv3 servers to act as data servers.
Also lowercase Read/Write/Data/MetaData to match the prevailing
style.
Discussed with: rmacklem
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 Wed May 3 20:44:44 2017 (r50228)
+++ head/en_US.ISO8859-1/htdocs/news/status/report-2017-01-2017-03.xml Thu May 4 03:51:12 2017 (r50229)
@@ -261,20 +261,21 @@
<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>
+ performed against multiple file servers, with the potential
+ for data access to occur in parallel. The pNFS
+ "layout" specifies how the division occurs, with
+ metadata operations occuring against the main server, and
+ bulk data operations (read/write/setattr/etc.) occuring via
+ a layout-specific scheme between the client and data
+ servers.</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
+ 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
+ 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>
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/svn-doc-all
To unsubscribe, send any mail to "[email protected]"