From patchwork Tue Sep 29 12:38:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhijian Li (Fujitsu)\" via" X-Patchwork-Id: 11805769 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DEF7F6CA for ; Tue, 29 Sep 2020 12:47:03 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 60A1920848 for ; Tue, 29 Sep 2020 12:47:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 60A1920848 Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=nongnu.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:53152 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kNF26-0005sa-BX for patchwork-qemu-devel@patchwork.kernel.org; Tue, 29 Sep 2020 08:47:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53464) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNEx8-0008Ib-NW; Tue, 29 Sep 2020 08:41:56 -0400 Received: from relay.sw.ru ([185.231.240.75]:35160 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNEx0-0000jj-SC; Tue, 29 Sep 2020 08:41:54 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.94) (envelope-from ) id 1kNEwO-002EOe-OH; Tue, 29 Sep 2020 15:41:08 +0300 To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, kwolf@redhat.com, mreitz@redhat.com, stefanha@redhat.com, fam@euphon.net, jsnow@redhat.com, armbru@redhat.com, eblake@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com Subject: [PATCH v10 7/9] stream: skip filters when writing backing file name to QCOW2 header Date: Tue, 29 Sep 2020 15:38:27 +0300 Message-Id: <1601383109-110988-8-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1601383109-110988-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1601383109-110988-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/29 08:38:56 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: Andrey Shinkevich X-Patchwork-Original-From: Andrey Shinkevich via From: "Zhijian Li (Fujitsu)\" via" Avoid writing a filter JSON-name to QCOW2 image when the backing file is changed after the block stream job. Signed-off-by: Andrey Shinkevich --- block/stream.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/block/stream.c b/block/stream.c index e0540ee..b0719e9 100644 --- a/block/stream.c +++ b/block/stream.c @@ -65,6 +65,7 @@ static int stream_prepare(Job *job) BlockDriverState *bs = blk_bs(bjob->blk); BlockDriverState *unfiltered_bs = bdrv_skip_filters(bs); BlockDriverState *base = bdrv_filter_or_cow_bs(s->above_base); + BlockDriverState *base_metadata = bdrv_skip_filters(base); Error *local_err = NULL; int ret = 0; @@ -73,10 +74,10 @@ static int stream_prepare(Job *job) if (bdrv_cow_child(unfiltered_bs)) { const char *base_id = NULL, *base_fmt = NULL; - if (base) { - base_id = s->backing_file_str; - if (base->drv) { - base_fmt = base->drv->format_name; + if (base_metadata) { + base_id = base_metadata->filename; + if (base_metadata->drv) { + base_fmt = base_metadata->drv->format_name; } } bdrv_set_backing_hd(unfiltered_bs, base, &local_err);