Date: Sat, 19 Oct 2019 07:47:28 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r353754 - stable/12/cddl/contrib/opensolaris/cmd/zpool Message-ID: <201910190747.x9J7lSB8077165@repo.freebsd.org>
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Author: avg Date: Sat Oct 19 07:47:28 2019 New Revision: 353754 URL: https://svnweb.freebsd.org/changeset/base/353754 Log: MFC r353341,r353342: zfs: document large_dnode feature Modified: stable/12/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7 Directory Properties: stable/12/ (props changed) Modified: stable/12/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7 ============================================================================== --- stable/12/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7 Sat Oct 19 07:45:11 2019 (r353753) +++ stable/12/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7 Sat Oct 19 07:47:28 2019 (r353754) @@ -527,6 +527,30 @@ Please note that booting from datasets that have recor supported by the .Fx boot loader. +.It Sy large_dnode +.Bl -column "READ\-ONLY COMPATIBLE" "org.zfsonlinux:large_dnode" +.It GUID Ta org.zfsonlinux:large_dnode +.It READ\-ONLY COMPATIBLE Ta no +.It DEPENDENCIES Ta extensible_dataset +.El +.Pp +The +.Sy large_dnode +feature allows the size of dnodes in a dataset to be set larger than 512B. +.Pp +This feature becomes +.Sy active +once a dataset contains an object with a dnode larger than 512B, +which occurs as a result of setting the +.Sy dnodesize +dataset property to a value other than +.Sy legacy . +The feature will return to being +.Sy enabled +once all filesystems that have ever contained a dnode larger than 512B are +destroyed. +Large dnodes allow more data to be stored in the bonus buffer, thus potentially +improving performance by avoiding the use of spill blocks. .It Sy sha512 .Bl -column "READ\-ONLY COMPATIBLE" "org.illumos:sha512" .It GUID Ta org.illumos:sha512
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