From owner-svn-src-head@freebsd.org Thu Sep 29 00:00:38 2016 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 97DBFC01334; Thu, 29 Sep 2016 00:00:38 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 67C0A1B84; Thu, 29 Sep 2016 00:00:38 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u8T00b4e004672; Thu, 29 Sep 2016 00:00:37 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u8T00bYQ004671; Thu, 29 Sep 2016 00:00:37 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201609290000.u8T00bYQ004671@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Thu, 29 Sep 2016 00:00:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r306425 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Sep 2016 00:00:38 -0000 Author: mav Date: Thu Sep 29 00:00:37 2016 New Revision: 306425 URL: https://svnweb.freebsd.org/changeset/base/306425 Log: MFV r306423: 7402 Create tunable to ignore hole_birth feature Until we can resolve the numerous hole_birth bugs that have cropped up recently, and come up with a way going forwards to protect users from corruption, we should disable the hole_birth feature. Using a tunable allows those who are confident that their data is correct to continue to take advantage of the feature. Closes #188 Reviewed by: Matthew Ahrens Author: Paul Dagnelie Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_traverse.c Directory Properties: head/sys/cddl/contrib/opensolaris/ (props changed) Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_traverse.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_traverse.c Wed Sep 28 23:54:47 2016 (r306424) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_traverse.c Thu Sep 29 00:00:37 2016 (r306425) @@ -40,6 +40,11 @@ #include int32_t zfs_pd_bytes_max = 50 * 1024 * 1024; /* 50MB */ +boolean_t send_holes_without_birth_time = B_TRUE; + +SYSCTL_DECL(_vfs_zfs); +SYSCTL_UINT(_vfs_zfs, OID_AUTO, send_holes_without_birth_time, CTLFLAG_RWTUN, + &send_holes_without_birth_time, 0, "Send holes without birth time"); typedef struct prefetch_data { kmutex_t pd_mtx; @@ -254,7 +259,8 @@ traverse_visitbp(traverse_data_t *td, co * * Note that the meta-dnode cannot be reallocated. */ - if ((!td->td_realloc_possible || + if (!send_holes_without_birth_time && + (!td->td_realloc_possible || zb->zb_object == DMU_META_DNODE_OBJECT) && td->td_hole_birth_enabled_txg <= td->td_min_txg) return (0);