From patchwork Mon Dec 5 08:35:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhanghailiang X-Patchwork-Id: 9460639 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F0B736071F for ; Mon, 5 Dec 2016 08:53:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EF7DE25250 for ; Mon, 5 Dec 2016 08:53:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E42F22621D; Mon, 5 Dec 2016 08:53:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6B2EB26212 for ; Mon, 5 Dec 2016 08:53:22 +0000 (UTC) Received: from localhost ([::1]:38386 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cDolN-0002rn-2L for patchwork-qemu-devel@patchwork.kernel.org; Mon, 05 Dec 2016 03:36:41 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48282) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cDokr-0002n4-BQ for qemu-devel@nongnu.org; Mon, 05 Dec 2016 03:36:13 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cDokp-0000K0-BJ for qemu-devel@nongnu.org; Mon, 05 Dec 2016 03:36:09 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:3545) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1cDokn-0000Gr-AU; Mon, 05 Dec 2016 03:36:07 -0500 Received: from 172.24.1.36 (EHLO szxeml428-hub.china.huawei.com) ([172.24.1.36]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DRR98226; Mon, 05 Dec 2016 16:35:36 +0800 (CST) Received: from localhost (10.177.24.212) by szxeml428-hub.china.huawei.com (10.82.67.183) with Microsoft SMTP Server id 14.3.235.1; Mon, 5 Dec 2016 16:35:29 +0800 From: zhanghailiang To: , Date: Mon, 5 Dec 2016 16:35:01 +0800 Message-ID: <1480926904-17596-4-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 In-Reply-To: <1480926904-17596-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1480926904-17596-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.212] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 119.145.14.65 Subject: [Qemu-devel] [PATCH RFC v2 3/6] replication: Split out backup_do_checkpoint() from secondary_do_checkpoint() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, xiecl.fnst@cn.fujitsu.com, zhanghailiang , wency@cn.fujitsu.com, mreitz@redhat.com, stefanha@redhat.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The helper backup_do_checkpoint() will be used for primary related codes. Here we split it out from secondary_do_checkpoint(). Besides, it is unnecessary to call backup_do_checkpoint() in replication starting and normally stop replication path. We only need call it while do real checkpointing. Signed-off-by: zhanghailiang Reviewed-by: Changlong Xie Reviewed-by: Stefan Hajnoczi --- block/replication.c | 36 +++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 17 deletions(-) diff --git a/block/replication.c b/block/replication.c index e87ae87..35e9ab3 100644 --- a/block/replication.c +++ b/block/replication.c @@ -332,20 +332,8 @@ static bool replication_recurse_is_first_non_filter(BlockDriverState *bs, static void secondary_do_checkpoint(BDRVReplicationState *s, Error **errp) { - Error *local_err = NULL; int ret; - if (!s->secondary_disk->bs->job) { - error_setg(errp, "Backup job was cancelled unexpectedly"); - return; - } - - backup_do_checkpoint(s->secondary_disk->bs->job, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - ret = s->active_disk->bs->drv->bdrv_make_empty(s->active_disk->bs); if (ret < 0) { error_setg(errp, "Cannot make active disk empty"); @@ -558,6 +546,8 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, return; } block_job_start(job); + + secondary_do_checkpoint(s, errp); break; default: aio_context_release(aio_context); @@ -566,10 +556,6 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, s->replication_state = BLOCK_REPLICATION_RUNNING; - if (s->mode == REPLICATION_MODE_SECONDARY) { - secondary_do_checkpoint(s, errp); - } - s->error = 0; aio_context_release(aio_context); } @@ -579,13 +565,29 @@ static void replication_do_checkpoint(ReplicationState *rs, Error **errp) BlockDriverState *bs = rs->opaque; BDRVReplicationState *s; AioContext *aio_context; + Error *local_err = NULL; aio_context = bdrv_get_aio_context(bs); aio_context_acquire(aio_context); s = bs->opaque; - if (s->mode == REPLICATION_MODE_SECONDARY) { + switch (s->mode) { + case REPLICATION_MODE_PRIMARY: + break; + case REPLICATION_MODE_SECONDARY: + if (!s->secondary_disk->bs->job) { + error_setg(errp, "Backup job was cancelled unexpectedly"); + break; + } + backup_do_checkpoint(s->secondary_disk->bs->job, &local_err); + if (local_err) { + error_propagate(errp, local_err); + break; + } secondary_do_checkpoint(s, errp); + break; + default: + abort(); } aio_context_release(aio_context); }