From patchwork Fri Sep 15 18:41:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Denis V. Lunev" X-Patchwork-Id: 13387432 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0E275EED61E for ; Fri, 15 Sep 2023 18:42:04 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qhDl9-0004YG-Up; Fri, 15 Sep 2023 14:41:43 -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 1qhDl5-0004RL-Fw; 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 1qhDl3-00037H-Hv; 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 1qhDhc-00Fs9Q-26; 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 20:41:09 +0200 Message-Id: <20230915184130.403366-3-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 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 Reviewed-by: Alexander Ivanov --- 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); } +static bool parallels_is_support_dirty_bitmaps(BlockDriverState *bs) +{ + return 1; +} + static BlockDriver bdrv_parallels = { .format_name = "parallels", .instance_size = sizeof(BDRVParallelsState), @@ -1256,6 +1261,7 @@ static BlockDriver bdrv_parallels = { .supports_backing = true, .bdrv_has_zero_init = bdrv_has_zero_init_1, + .bdrv_supports_persistent_dirty_bitmap = parallels_is_support_dirty_bitmaps, .bdrv_probe = parallels_probe, .bdrv_open = parallels_open,