From owner-svn-src-all@freebsd.org Fri Apr 14 18:05:21 2017 Return-Path: Delivered-To: svn-src-all@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 8A149D3E5CE; Fri, 14 Apr 2017 18:05:21 +0000 (UTC) (envelope-from avg@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 4D44713A2; Fri, 14 Apr 2017 18:05:21 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v3EI5KXi061397; Fri, 14 Apr 2017 18:05:20 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v3EI5Kdo061396; Fri, 14 Apr 2017 18:05:20 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201704141805.v3EI5Kdo061396@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Fri, 14 Apr 2017 18:05:20 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r316893 - vendor/illumos/dist/lib/libzfs/common X-SVN-Group: vendor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Apr 2017 18:05:21 -0000 Author: avg Date: Fri Apr 14 18:05:20 2017 New Revision: 316893 URL: https://svnweb.freebsd.org/changeset/base/316893 Log: 7604 if volblocksize property is the default, it displays as "-" rather than 8K illumos/illumos-gate@4d86c0eab246bdfddc2dd52410ba808433bd6266 https://github.com/illumos/illumos-gate/commit/4d86c0eab246bdfddc2dd52410ba808433bd6266 https://www.illumos.org/issues/7604 If a zvol has the default setting for the "volblocksize" property, it is 8KB. However, it is displayed as "-" (not present), rather than "8K". The problem was introduced by: commit 25228e830e86924a41243343b1de9daf2d7dd43a Author: Matthew Ahrens <mahrens@delphix.com> Date: Thu Nov 17 14:37:24 2016 -0800 7571 non-present readonly numeric ZFS props do not have default value which changed changed get_numeric_property() to indicate that readonly default properties are not present. However, zfs_prop_readonly() returns TRUE for both readonly and set-once properties (e.g. volblocksize). Amusingly, that commit essentially reverted: 6900484 default volblocksize is no longer being reported correctly from November 2009. However, that change was not correct either; the correct solution is to only do this check for "truly readonly" (i.e. not setonce) properties. $ zfs list -t volume -o name,volblocksize NAME VOLBLOCK domain0/group-100/appdata_container-101/appdata_windows_timeflow-102/ archive - domain0/group-100/appdata_container-101/appdata_windows_timeflow-102/ datafile - domain0/group-100/appdata_container-101/appdata_windows_timeflow-102/ external - rpool/dump 128K rpool/swap 4K rpool/swap1 =============================================================================== Reviewed by: Pavel Zakharov Reviewed by: Paul Dagnelie Reviewed by: John Kennedy Reviewed by: George Wilson Approved by: Robert Mustacchi Author: Matthew Ahrens Modified: vendor/illumos/dist/lib/libzfs/common/libzfs_dataset.c Modified: vendor/illumos/dist/lib/libzfs/common/libzfs_dataset.c ============================================================================== --- vendor/illumos/dist/lib/libzfs/common/libzfs_dataset.c Fri Apr 14 18:02:25 2017 (r316892) +++ vendor/illumos/dist/lib/libzfs/common/libzfs_dataset.c Fri Apr 14 18:05:20 2017 (r316893) @@ -2125,9 +2125,12 @@ get_numeric_property(zfs_handle_t *zhp, /* * If we tried to use a default value for a * readonly property, it means that it was not - * present. + * present. Note this only applies to "truly" + * readonly properties, not set-once properties + * like volblocksize. */ if (zfs_prop_readonly(prop) && + !zfs_prop_setonce(prop) && *source != NULL && (*source)[0] == '\0') { *source = NULL; return (-1);