Date: Wed, 5 Dec 2018 16:23:15 +0000 (UTC) From: Glen Barber <gjb@FreeBSD.org> To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r52581 - head/en_US.ISO8859-1/htdocs/releases/12.0R/relnotes Message-ID: <201812051623.wB5GNF4A067749@repo.freebsd.org>
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Author: gjb Date: Wed Dec 5 16:23:14 2018 New Revision: 52581 URL: https://svnweb.freebsd.org/changeset/doc/52581 Log: Document r323923, UFS2 cylinder group check hashes. Document r338056, UFS TRIM/BIO_DELETE consolidation. Document r338517, UFS TRIM/BIO_DELETE consolidation enabled. Submitted by: mckusick Sponsored by: The FreeBSD Foundation Modified: head/en_US.ISO8859-1/htdocs/releases/12.0R/relnotes/relnotes.xml Modified: head/en_US.ISO8859-1/htdocs/releases/12.0R/relnotes/relnotes.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/releases/12.0R/relnotes/relnotes.xml Wed Dec 5 15:09:39 2018 (r52580) +++ head/en_US.ISO8859-1/htdocs/releases/12.0R/relnotes/relnotes.xml Wed Dec 5 16:23:14 2018 (r52581) @@ -591,7 +591,30 @@ <sect2 xml:id="storage-general"> <title>General Storage</title> - <para> </para> + <para revision="323923">The + <acronym>UFS</acronym>/<acronym>FFS</acronym> filesystem + has been updated to support check hashes to cylinder-group + maps. Support for check hashes is available only for + <acronym>UFS</acronym>2.</para> + + <para revision="338056" contrib="sponsor" + sponsor="&netflix;">The + <acronym>UFS</acronym>/<acronym>FFS</acronym> filesystem has + been updated to consolidate + <acronym>TRIM</acronym>/<literal>BIO_DELETE</literal> + commands, reducing read/write requests due to fewer + <acronym>TRIM</acronym> messages being sent + simultaneously.</para> + + <para revision="338517" contrib="sponsor" + sponsor="&netflix;"><acronym>TRIM</acronym> consolidation + support has been enabled by default in the + <acronym>UFS</acronym>/<acronym>FFS</acronym> filesystem. + <acronym>TRIM</acronym> consolidation can be disabled by + setting the <literal>vfs.ffs.dotrimcons</literal> + &man.sysctl.8; to <literal>0</literal>, or adding + <literal>vfs.ffs.dotrimcons=0</literal> to + &man.sysctl.conf.5;.</para> </sect2> <sect2 xml:id="storage-net">
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