From patchwork Mon Apr 18 11:31:37 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 8871431 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3BA7F9F441 for ; Mon, 18 Apr 2016 11:32:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7163B20268 for ; Mon, 18 Apr 2016 11:32:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 94EC7201B4 for ; Mon, 18 Apr 2016 11:32:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752577AbcDRLcX (ORCPT ); Mon, 18 Apr 2016 07:32:23 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:25005 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752350AbcDRLcV (ORCPT ); Mon, 18 Apr 2016 07:32:21 -0400 Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u3IBWHiL005876 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 18 Apr 2016 11:32:17 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserv0022.oracle.com (8.13.8/8.13.8) with ESMTP id u3IBWFJ4009465 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 18 Apr 2016 11:32:15 GMT Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id u3IBWFxp028324; Mon, 18 Apr 2016 11:32:15 GMT Received: from arch2.sg.oracle.com (/10.186.101.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 18 Apr 2016 04:32:14 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.cz, yauhen.kharuzhy@zavadatar.com Subject: [PATCH 06/13] btrfs: introduce BTRFS_FEATURE_INCOMPAT_SPARE_DEV Date: Mon, 18 Apr 2016 19:31:37 +0800 Message-Id: <1460979104-27497-7-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1460979104-27497-1-git-send-email-anand.jain@oracle.com> References: <1460979104-27497-1-git-send-email-anand.jain@oracle.com> X-Source-IP: aserv0022.oracle.com [141.146.126.234] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anand Jain Add BTRFS_FEATURE_INCOMPAT_SPARE_DEV (400) flag to identify a spare device. Along with this it checks in the mount context that a spare device will fail to mount. As spare devices aren't mountable. Signed-off-by: Anand Jain Tested-by: Austin S. Hemmelgarn --- fs/btrfs/ctree.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index e0a50f478e01..2c185a8e92f0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -531,6 +531,7 @@ struct btrfs_super_block { #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) +#define BTRFS_FEATURE_INCOMPAT_SPARE_DEV (1ULL << 10) #define BTRFS_FEATURE_COMPAT_SUPP 0ULL #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL @@ -551,7 +552,8 @@ struct btrfs_super_block { BTRFS_FEATURE_INCOMPAT_RAID56 | \ BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ - BTRFS_FEATURE_INCOMPAT_NO_HOLES) + BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ + BTRFS_FEATURE_INCOMPAT_SPARE_DEV) #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)