From patchwork Thu Jul 7 12:11:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 9218881 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 C8BAF60574 for ; Thu, 7 Jul 2016 12:21:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BA328288CD for ; Thu, 7 Jul 2016 12:21:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AF343288CF; Thu, 7 Jul 2016 12:21:56 +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 60A9E288CD for ; Thu, 7 Jul 2016 12:21:56 +0000 (UTC) Received: from localhost ([::1]:39510 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bL8JX-0003VQ-HC for patchwork-qemu-devel@patchwork.kernel.org; Thu, 07 Jul 2016 08:21:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41932) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bL8A1-0008Ou-SU for qemu-devel@nongnu.org; Thu, 07 Jul 2016 08:12:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bL89w-00066U-Hj for qemu-devel@nongnu.org; Thu, 07 Jul 2016 08:12:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60059) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bL89t-00064Q-Jq; Thu, 07 Jul 2016 08:11:57 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4748685540; Thu, 7 Jul 2016 12:11:57 +0000 (UTC) Received: from noname.redhat.com (ovpn-204-113.brq.redhat.com [10.40.204.113]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u67CBgmb015882; Thu, 7 Jul 2016 08:11:55 -0400 From: Kevin Wolf To: qemu-block@nongnu.org Date: Thu, 7 Jul 2016 14:11:30 +0200 Message-Id: <1467893497-2434-5-git-send-email-kwolf@redhat.com> In-Reply-To: <1467893497-2434-1-git-send-email-kwolf@redhat.com> References: <1467893497-2434-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Thu, 07 Jul 2016 12:11:57 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v3 04/11] block: Accept node-name for blockdev-mirror 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, qemu-devel@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP In order to remove the necessity to use BlockBackend names in the external API, we want to allow node-names everywhere. This converts blockdev-mirror to accept a node-name without lifting the restriction that we're operating at a root node. Signed-off-by: Kevin Wolf --- blockdev.c | 10 +--------- qapi/block-core.json | 3 ++- qmp-commands.hx | 3 ++- 3 files changed, 5 insertions(+), 11 deletions(-) diff --git a/blockdev.c b/blockdev.c index d9909d0..7e9c7a4 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3654,21 +3654,13 @@ void qmp_blockdev_mirror(const char *device, const char *target, Error **errp) { BlockDriverState *bs; - BlockBackend *blk; BlockDriverState *target_bs; AioContext *aio_context; BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; Error *local_err = NULL; - blk = blk_by_name(device); - if (!blk) { - error_setg(errp, "Device '%s' not found", device); - return; - } - bs = blk_bs(blk); - + bs = qmp_get_root_bs(device, errp); if (!bs) { - error_setg(errp, "Device '%s' has no media", device); return; } diff --git a/qapi/block-core.json b/qapi/block-core.json index 98bbd49..a64b598 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1242,7 +1242,8 @@ # # Start mirroring a block device's writes to a new destination. # -# @device: the name of the device whose writes should be mirrored. +# @device: The device name or node-name of a root node whose writes should be +# mirrored. # # @target: the id or node-name of the block device to mirror to. This mustn't be # attached to guest. diff --git a/qmp-commands.hx b/qmp-commands.hx index e24d573..45b445f 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -1735,7 +1735,8 @@ specifies the target of mirror operation. Arguments: -- "device": device name to operate on (json-string) +- "device": The device name or node-name of a root node whose writes should be + mirrored (json-string) - "target": device name to mirror to (json-string) - "replaces": the block driver node name to replace when finished (json-string, optional)