Date: Tue, 18 Nov 2014 18:40:02 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r274673 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201411181840.sAIIe2C7094558@svn.freebsd.org>
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Author: delphij Date: Tue Nov 18 18:40:01 2014 New Revision: 274673 URL: https://svnweb.freebsd.org/changeset/base/274673 Log: Allow tuning zfs_max_recordsize via loader tunable. Tuning is NOT recommended. Requested by: Slawa Olhovchenkov <slw zxy spb ru> MFC after: 2 weeks Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Tue Nov 18 18:03:40 2014 (r274672) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Tue Nov 18 18:40:01 2014 (r274673) @@ -51,6 +51,8 @@ #include <sys/dsl_userhold.h> #include <sys/dsl_bookmark.h> +SYSCTL_DECL(_vfs_zfs); + /* * The SPA supports block sizes up to 16MB. However, very large blocks * can have an impact on i/o latency (e.g. tying up a spinning disk for @@ -61,6 +63,9 @@ * of this setting. */ int zfs_max_recordsize = 1 * 1024 * 1024; +SYSCTL_INT(_vfs_zfs, OID_AUTO, max_recordsize, CTLFLAG_RDTUN, + &zfs_max_recordsize, 0, + "Maximum block size. Expect dragons when tuning this."); #define SWITCH64(x, y) \ { \
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