Date: Fri, 5 Apr 2013 20:41:46 +0000 (UTC) From: Glen Barber <gjb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r249169 - releng/8.4/release/doc/en_US.ISO8859-1/relnotes Message-ID: <201304052041.r35Kfk1A021276@svn.freebsd.org>
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Author: gjb (doc,ports committer) Date: Fri Apr 5 20:41:46 2013 New Revision: 249169 URL: http://svnweb.freebsd.org/changeset/base/249169 Log: Document that, although ZFS pool feature flags are available, 8.4-RC1 and later ZFS pool version defaults to version 28 to prevent problems with upgrading to FreeBSD 9.1-RELEASE. Feature flags can be enabled by explicitly running: zpool upgrade <pool> Approved by: re (delphij) Modified: releng/8.4/release/doc/en_US.ISO8859-1/relnotes/article.xml Modified: releng/8.4/release/doc/en_US.ISO8859-1/relnotes/article.xml ============================================================================== --- releng/8.4/release/doc/en_US.ISO8859-1/relnotes/article.xml Fri Apr 5 20:24:51 2013 (r249168) +++ releng/8.4/release/doc/en_US.ISO8859-1/relnotes/article.xml Fri Apr 5 20:41:46 2013 (r249169) @@ -190,7 +190,37 @@ <sect3 id="fs"> <title>File Systems</title> - <para></para> + <para>ZFS is upgraded to support zpool feature flags. ZFS + pool creation defaults to version 28 allowing upgrades to + &os; 9.1-RELEASE, which does not support + zpool feature flags.</para> + + <para>Users who wish to enable these features can upgrade + storage pools created on &os; 8.4-RC1 and later by + running <command>zpool upgrade</command>.</para> + + <para>The new features available are:</para> + + <itemizedlist> + <listitem> + <para><literal>async_destroy</literal>: allows a ZFS + dataset to be destroyed asynchronously, reclaiming space + by a background process.</para> + </listitem> + + <listitem> + <para><literal>empty_bpobj</literal>: improves performance + and reduces disk space needed by snapshots.</para> + </listitem> + + <listitem> + <para><literal>lz4_compress</literal>: a new high + performance compression algorithm thatfeatures better + performance and compression ratio than lzjb.</para> + </listitem> + </itemizedlist> + + <para>For more information, see &man.zpool-features.7;.</para> </sect3> </sect2>
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