Date: Fri, 9 Aug 2013 08:48:29 -0700 From: "David O'Brien" <obrien@FreeBSD.org> To: Andriy Gapon <avg@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r253996 - in head: . sys/cddl/compat/opensolaris/sys sys/cddl/dev/dtrace sys/conf sys/modules/cyclic sys/modules/dtrace/dtio sys/modules/dtrace/dtmalloc sys/modules/dtrace/dtnfscl sys/m... Message-ID: <20130809154829.GA12485@dragon.NUXI.org> In-Reply-To: <201308061551.r76FpuY7056153@svn.freebsd.org> References: <201308061551.r76FpuY7056153@svn.freebsd.org>
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On Tue, Aug 06, 2013 at 03:51:56PM +0000, Andriy Gapon wrote: > Log: .. > Also, meaning of DEBUG was overloaded to enable WITNESS support for some > OpenSolaris (primarily ZFS) locks. Now this overloading is removed and > that use of DEBUG is replaced with a new option OPENSOLARIS_WITNESS. You state there is little value in witness tracking for ZFS in UPDATING. Is there no reasonable way to gain useful lock tracking for ZFS? At a minimum, shouldn't this also be added to sys/conf/NOTES in the "# SMP Debugging Options:" section? -- -- David (obrien@FreeBSD.org)
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