From nobody Tue Oct 22 23:24:43 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=openvz.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1694803537273674.2731151798553; Fri, 15 Sep 2023 11:45:37 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qhDl7-0004Vb-DB; Fri, 15 Sep 2023 14:41:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhDl5-0004S1-PX; Fri, 15 Sep 2023 14:41:39 -0400 Received: from relay.virtuozzo.com ([130.117.225.111]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhDl3-00037I-Ii; Fri, 15 Sep 2023 14:41:39 -0400 Received: from ch-vpn.virtuozzo.com ([130.117.225.6] helo=iris.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1qhDhd-00Fs9Q-0L; Fri, 15 Sep 2023 20:41:29 +0200 From: "Denis V. Lunev" To: qemu-block@nongnu.org, qemu-devel@nongnu.org Cc: stefanha@redhat.com, alexander.ivanov@virtuozzo.com, mike.maslenkin@gmail.com, "Denis V. Lunev" Subject: [PATCH 02/21] parallels: mark driver as supporting CBT Date: Fri, 15 Sep 2023 20:41:10 +0200 Message-Id: <20230915184130.403366-4-den@openvz.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230915184130.403366-1-den@openvz.org> References: <20230915184130.403366-1-den@openvz.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=130.117.225.111; envelope-from=den@openvz.org; helo=relay.virtuozzo.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1694803538786100003 Content-Type: text/plain; charset="utf-8" Parallels driver indeed support Parallels Dirty Bitmap Feature in read-only mode. The patch adds bdrv_supports_persistent_dirty_bitmap() callback which always return 1 to indicate that. This will allow to copy CBT from Parallels image with qemu-img. Note: read-write support is signalled through bdrv_co_can_store_new_dirty_bitmap() and is different. Signed-off-by: Denis V. Lunev --- block/parallels.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/block/parallels.c b/block/parallels.c index 2ebd8e1301..428f72de1c 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -1248,6 +1248,11 @@ static void parallels_close(BlockDriverState *bs) error_free(s->migration_blocker); } =20 +static bool parallels_is_support_dirty_bitmaps(BlockDriverState *bs) +{ + return 1; +} + static BlockDriver bdrv_parallels =3D { .format_name =3D "parallels", .instance_size =3D sizeof(BDRVParallelsState), @@ -1256,6 +1261,7 @@ static BlockDriver bdrv_parallels =3D { .supports_backing =3D true, =20 .bdrv_has_zero_init =3D bdrv_has_zero_init_1, + .bdrv_supports_persistent_dirty_bitmap =3D parallels_is_support_dirty_= bitmaps, =20 .bdrv_probe =3D parallels_probe, .bdrv_open =3D parallels_open, --=20 2.34.1