From patchwork Mon Sep 5 18:13:19 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 9315011 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 E1567600CA for ; Mon, 5 Sep 2016 18:29:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D547828A62 for ; Mon, 5 Sep 2016 18:29:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CA19328B04; Mon, 5 Sep 2016 18:29:14 +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 19CC228A62 for ; Mon, 5 Sep 2016 18:29:14 +0000 (UTC) Received: from localhost ([::1]:56202 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgydt-0006ZR-4t for patchwork-qemu-devel@patchwork.kernel.org; Mon, 05 Sep 2016 14:29:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38008) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgyPV-0002kQ-KX for qemu-devel@nongnu.org; Mon, 05 Sep 2016 14:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bgyPM-0000mf-Dk for qemu-devel@nongnu.org; Mon, 05 Sep 2016 14:14:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35222) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgyPG-0000ji-Mq; Mon, 05 Sep 2016 14:14:06 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (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 4D2014E4E2; Mon, 5 Sep 2016 18:14:06 +0000 (UTC) Received: from noname.redhat.com (ovpn-116-62.ams2.redhat.com [10.36.116.62]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u85IDt7V020627; Mon, 5 Sep 2016 14:14:05 -0400 From: Kevin Wolf To: qemu-block@nongnu.org Date: Mon, 5 Sep 2016 20:13:19 +0200 Message-Id: <1473099234-10882-8-git-send-email-kwolf@redhat.com> In-Reply-To: <1473099234-10882-1-git-send-email-kwolf@redhat.com> References: <1473099234-10882-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Mon, 05 Sep 2016 18:14:06 +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] [PULL 07/42] block: Accept node-name for blockdev-snapshot-delete-internal-sync 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 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-snapshot-delete-internal-sync to accept a node-name without lifting the restriction that we're operating at a root node. In case of an invalid device name, the command returns the GenericError error class now instead of DeviceNotFound, because this is what qmp_get_root_bs() returns. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Alberto Garcia Reviewed-by: Max Reitz --- blockdev.c | 16 +++------------- qapi/block.json | 5 +++-- qmp-commands.hx | 2 +- tests/qemu-iotests/057 | 2 +- 4 files changed, 8 insertions(+), 17 deletions(-) diff --git a/blockdev.c b/blockdev.c index ccff1f7..9feffcd 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1306,21 +1306,17 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, Error **errp) { BlockDriverState *bs; - BlockBackend *blk; AioContext *aio_context; QEMUSnapshotInfo sn; Error *local_err = NULL; SnapshotInfo *info = NULL; int ret; - blk = blk_by_name(device); - if (!blk) { - error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, - "Device '%s' not found", device); + bs = qmp_get_root_bs(device, errp); + if (!bs) { return NULL; } - - aio_context = blk_get_aio_context(blk); + aio_context = bdrv_get_aio_context(bs); aio_context_acquire(aio_context); if (!has_id) { @@ -1336,12 +1332,6 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, goto out_aio_context; } - if (!blk_is_available(blk)) { - error_setg(errp, "Device '%s' has no medium", device); - goto out_aio_context; - } - bs = blk_bs(blk); - if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { goto out_aio_context; } diff --git a/qapi/block.json b/qapi/block.json index 937337d..c0e831f 100644 --- a/qapi/block.json +++ b/qapi/block.json @@ -99,14 +99,15 @@ # both. One of the name or id is required. Return SnapshotInfo for the # successfully deleted snapshot. # -# @device: the name of the device to delete the snapshot from +# @device: the device name or node-name of a root node to delete the snapshot +# from # # @id: optional the snapshot's ID to be deleted # # @name: optional the snapshot's name to be deleted # # Returns: SnapshotInfo on success -# If @device is not a valid block device, DeviceNotFound +# If @device is not a valid block device, GenericError # If snapshot not found, GenericError # If the format of the image used does not support it, # BlockFormatFeatureNotSupported diff --git a/qmp-commands.hx b/qmp-commands.hx index 034d517..6793c8d 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -1639,7 +1639,7 @@ fail. Arguments: -- "device": device name (json-string) +- "device": the device name or node-name of a root node (json-string) - "id": ID of the snapshot (json-string, optional) - "name": name of the snapshot (json-string, optional) diff --git a/tests/qemu-iotests/057 b/tests/qemu-iotests/057 index 9cdd582..bb6c06a 100755 --- a/tests/qemu-iotests/057 +++ b/tests/qemu-iotests/057 @@ -239,7 +239,7 @@ class TestSnapshotDelete(ImageSnapshotTestCase): result = self.vm.qmp('blockdev-snapshot-delete-internal-sync', device = 'drive_error', id = '0') - self.assert_qmp(result, 'error/class', 'DeviceNotFound') + self.assert_qmp(result, 'error/class', 'GenericError') def test_error_no_id_and_name(self): result = self.vm.qmp('blockdev-snapshot-delete-internal-sync',