From patchwork Tue Nov 3 10:58:49 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 539313 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 63DB314090A for ; Tue, 3 Nov 2015 22:06:39 +1100 (AEDT) Received: from localhost ([::1]:47058 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtZQD-0006Nr-EQ for incoming@patchwork.ozlabs.org; Tue, 03 Nov 2015 06:06:37 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37473) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtZKI-0004dG-Qn for qemu-devel@nongnu.org; Tue, 03 Nov 2015 06:00:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZtZKE-0002mB-I1 for qemu-devel@nongnu.org; Tue, 03 Nov 2015 06:00:30 -0500 Received: from [59.151.112.132] (port=29882 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtZKE-0002hE-2b; Tue, 03 Nov 2015 06:00:26 -0500 Received: from bogon (HELO edo.cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 03 Nov 2015 19:00:10 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (localhost.localdomain [127.0.0.1]) by edo.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id tA3AxlQc019103; Tue, 3 Nov 2015 18:59:48 +0800 Received: from G08FNSTD140052.g08.fujitsu.local (10.167.226.52) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.181.6; Tue, 3 Nov 2015 19:00:23 +0800 From: Wen Congyang To: qemu devel , Fam Zheng , Max Reitz , Paolo Bonzini , Stefan Hajnoczi Date: Tue, 3 Nov 2015 18:58:49 +0800 Message-ID: <1446548329-17475-13-git-send-email-wency@cn.fujitsu.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1446548329-17475-1-git-send-email-wency@cn.fujitsu.com> References: <1446548329-17475-1-git-send-email-wency@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.52] X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Cc: Kevin Wolf , qemu block , Jiang Yunhong , Dong Eddie , "Dr. David Alan Gilbert" , "Michael R. Hines" , Gonglei , zhanghailiang Subject: [Qemu-devel] [PATCH v11 12/12] Add a new API to start/stop replication, do checkpoint to all BDSes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Wen Congyang Signed-off-by: zhanghailiang Signed-off-by: Gonglei --- block.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++ include/block/block.h | 4 +++ 2 files changed, 87 insertions(+) diff --git a/block.c b/block.c index 04b928c..517fa4b 100644 --- a/block.c +++ b/block.c @@ -4208,3 +4208,86 @@ void bdrv_stop_replication(BlockDriverState *bs, bool failover, Error **errp) " replication", bs->filename); } } + +void bdrv_start_replication_all(ReplicationMode mode, Error **errp) +{ + BlockDriverState *bs = NULL, *temp = NULL; + Error *local_err = NULL; + + while ((bs = bdrv_next(bs))) { + if (!QLIST_EMPTY(&bs->parents)) { + /* It is not top BDS */ + continue; + } + + if (bdrv_is_read_only(bs) || !bdrv_is_inserted(bs)) { + continue; + } + + bdrv_start_replication(bs, mode, &local_err); + if (local_err) { + error_propagate(errp, local_err); + goto fail; + } + } + + return; + +fail: + while ((temp = bdrv_next(temp)) && bs != temp) { + bdrv_stop_replication(temp, false, NULL); + } +} + +void bdrv_do_checkpoint_all(Error **errp) +{ + BlockDriverState *bs = NULL; + Error *local_err = NULL; + + while ((bs = bdrv_next(bs))) { + if (!QLIST_EMPTY(&bs->parents)) { + /* It is not top BDS */ + continue; + } + + if (bdrv_is_read_only(bs) || !bdrv_is_inserted(bs)) { + continue; + } + + bdrv_do_checkpoint(bs, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + } +} + +void bdrv_stop_replication_all(bool failover, Error **errp) +{ + BlockDriverState *bs = NULL; + Error *local_err = NULL; + + while ((bs = bdrv_next(bs))) { + if (!QLIST_EMPTY(&bs->parents)) { + /* It is not top BDS */ + continue; + } + + if (bdrv_is_read_only(bs) || !bdrv_is_inserted(bs)) { + continue; + } + + bdrv_stop_replication(bs, failover, &local_err); + if (!errp) { + /* + * The caller doesn't care the result, they just + * want to stop all block's replication. + */ + continue; + } + if (local_err) { + error_propagate(errp, local_err); + return; + } + } +} diff --git a/include/block/block.h b/include/block/block.h index 288e14e..8427969 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -643,4 +643,8 @@ void bdrv_start_replication(BlockDriverState *bs, ReplicationMode mode, void bdrv_do_checkpoint(BlockDriverState *bs, Error **errp); void bdrv_stop_replication(BlockDriverState *bs, bool failover, Error **errp); +void bdrv_start_replication_all(ReplicationMode mode, Error **errp); +void bdrv_do_checkpoint_all(Error **errp); +void bdrv_stop_replication_all(bool failover, Error **errp); + #endif