Date: Tue, 1 Jul 2014 21:19:11 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> 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 Message-ID: <201407012119.s61LJBJ1005711@svn.freebsd.org>
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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 <mahrens@delphix.com> Reviewed by Saso Kiselkov <skiselkov.ml@gmail.com> Approved by: Christopher Siden <christopher.siden@delphix.com> 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
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