Date: Tue, 18 Nov 2014 18:52:39 +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: r274674 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201411181852.sAIIqd7S002982@svn.freebsd.org>
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Author: delphij Date: Tue Nov 18 18:52:38 2014 New Revision: 274674 URL: https://svnweb.freebsd.org/changeset/base/274674 Log: Add a tunable for spa_slop_shift which controls how much space we would reserve by default. Tuning is not recommended. MFC after: 2 weeks Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c Tue Nov 18 18:40:01 2014 (r274673) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c Tue Nov 18 18:52:38 2014 (r274674) @@ -401,6 +401,9 @@ zfs_deadman_init() * See also the comments in zfs_space_check_t. */ int spa_slop_shift = 5; +SYSCTL_INT(_vfs_zfs, OID_AUTO, spa_slop_shift, CTLFLAG_RWTUN, + &spa_slop_shift, 0, + "Shift value of reserved space (1/(2^spa_slop_shift))."); /* * ==========================================================================
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