From owner-svn-src-all@FreeBSD.ORG Tue Jul 1 21:19:11 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 57F22363; Tue, 1 Jul 2014 21:19:11 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 29DF52F88; Tue, 1 Jul 2014 21:19:11 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s61LJBap005712; Tue, 1 Jul 2014 21:19:11 GMT (envelope-from delphij@svn.freebsd.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s61LJBJ1005711; Tue, 1 Jul 2014 21:19:11 GMT (envelope-from delphij@svn.freebsd.org) Message-Id: <201407012119.s61LJBJ1005711@svn.freebsd.org> From: Xin LI Date: Tue, 1 Jul 2014 21:19:11 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r268121 - vendor-sys/illumos/dist/common/zfs vendor-sys/illumos/dist/uts/common/fs/zfs vendor/illumos/dist/man/man5 X-SVN-Group: vendor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jul 2014 21:19:11 -0000 Author: delphij Date: Tue Jul 1 21:19:10 2014 New Revision: 268121 URL: http://svnweb.freebsd.org/changeset/base/268121 Log: 4924 LZ4 Compression for metadata Reviewed by Matthew Ahrens Reviewed by Saso Kiselkov Approved by: Christopher Siden illumos/illumos-gate@b8289d24d866c1af02d7007348f7f057693c15d3 Modified: vendor/illumos/dist/man/man5/zpool-features.5 Changes in other areas also in this revision: Modified: vendor-sys/illumos/dist/common/zfs/zfeature_common.c vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c vendor-sys/illumos/dist/uts/common/fs/zfs/zfs_ioctl.c Modified: vendor/illumos/dist/man/man5/zpool-features.5 ============================================================================== --- vendor/illumos/dist/man/man5/zpool-features.5 Tue Jul 1 21:16:27 2014 (r268120) +++ vendor/illumos/dist/man/man5/zpool-features.5 Tue Jul 1 21:19:10 2014 (r268121) @@ -243,13 +243,14 @@ giving approximately 10% better compress When the \fBlz4_compress\fR feature is set to \fBenabled\fR, the administrator can turn on \fBlz4\fR compression on any dataset on the -pool using the \fBzfs\fR(1M) command. Please note that doing so will -immediately activate the \fBlz4_compress\fR feature on the underlying -pool (even before any data is written), and the feature will not be -deactivated. Since this feature is not read-only compatible, this -operation will render the pool unimportable on systems without support -for the \fBlz4_compress\fR feature. Booting off of \fBlz4\fR-compressed -root pools is supported. +pool using the \fBzfs\fR(1M) command. Also, all newly written metadata +will be compressed with \fBlz4\fR algorithm. Since this feature is not +read-only compatible, this operation will render the pool unimportable +on systems without support for the \fBlz4_compress\fR feature. Booting +off of \fBlz4\fR-compressed root pools is supported. + +This feature becomes \fBactive\fR as soon as it is enabled and will +never return to being \fBenabled\fB. .RE .sp