From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA5E9C11F65 for ; Wed, 30 Jun 2021 16:13:43 +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 7F0BA61477 for ; Wed, 30 Jun 2021 16:13:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F0BA61477 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39420 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lycqM-0006BR-Lr for qemu-devel@archiver.kernel.org; Wed, 30 Jun 2021 12:13:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44064) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lycfj-0002vS-PN for qemu-devel@nongnu.org; Wed, 30 Jun 2021 12:02:44 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:23478) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lycfT-00071q-7l for qemu-devel@nongnu.org; Wed, 30 Jun 2021 12:02:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1625068946; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PBl2DzOdzlR78uhIEDr+i4e/y0olLuP4GBtsWtC9/0Y=; b=R82x5D1C1Bi2QcjqcIL8zCrkTeLEYaNmCUpVFxeL5mA5vCPXLT1F6ujGunmMieYbcH87md Rcx1fcF9bwygnFW+11mF4jmZHyrobLLZmB95w8+CQsLTGPiZweztG0R8UM9FLlzx5w9KoG MhZcfxpfiYCU97R/2ELDJ0LaJXJJhT0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-455-L-dMBxQnOQ2BuNWc7AeOHw-1; Wed, 30 Jun 2021 12:02:24 -0400 X-MC-Unique: L-dMBxQnOQ2BuNWc7AeOHw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A1D78804141; Wed, 30 Jun 2021 16:02:22 +0000 (UTC) Received: from merkur.fritz.box (ovpn-114-114.ams2.redhat.com [10.36.114.114]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF0F6189C7; Wed, 30 Jun 2021 16:02:21 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PULL 09/24] block: bdrv_reopen_parse_backing(): don't check frozen child Date: Wed, 30 Jun 2021 18:01:51 +0200 Message-Id: <20210630160206.276439-10-kwolf@redhat.com> In-Reply-To: <20210630160206.276439-1-kwolf@redhat.com> References: <20210630160206.276439-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.435, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: , Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy bdrv_set_backing_noperm() takes care of it (actual check is in bdrv_set_file_or_backing_noperm()), so we don't need to check it here. While being here, improve error message a bit. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20210610120537.196183-5-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf --- block.c | 14 +------------- tests/qemu-iotests/245 | 8 ++++---- 2 files changed, 5 insertions(+), 17 deletions(-) diff --git a/block.c b/block.c index 69dc9d188d..6472866283 100644 --- a/block.c +++ b/block.c @@ -4308,19 +4308,7 @@ static int bdrv_reopen_parse_backing(BDRVReopenState *reopen_state, "an implicit backing file", bs->node_name); return -EPERM; } - /* - * Check if the backing link that we want to replace is frozen. - * Note that - * bdrv_filter_or_cow_child(overlay_bs) == overlay_bs->backing, - * because we know that overlay_bs == bs, and that @bs - * either is a filter that uses ->backing or a COW format BDS - * with bs->drv->supports_backing == true. - */ - if (bdrv_is_backing_chain_frozen(overlay_bs, - child_bs(overlay_bs->backing), errp)) - { - return -EPERM; - } + reopen_state->replace_backing_bs = true; reopen_state->old_backing_bs = bs->backing ? bs->backing->bs : NULL; ret = bdrv_set_backing_noperm(bs, new_backing_bs, set_backings_tran, diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245 index fc5297e268..c7d671366a 100755 --- a/tests/qemu-iotests/245 +++ b/tests/qemu-iotests/245 @@ -878,7 +878,7 @@ class TestBlockdevReopen(iotests.QMPTestCase): # We can't remove hd1 while the stream job is ongoing opts['backing'] = None - self.reopen(opts, {}, "Cannot change 'backing' link from 'hd0' to 'hd1'") + self.reopen(opts, {}, "Cannot change frozen 'backing' link from 'hd0' to 'hd1'") self.vm.run_job('stream0', auto_finalize = False, auto_dismiss = True) @@ -910,7 +910,7 @@ class TestBlockdevReopen(iotests.QMPTestCase): # We can't remove hd2 while the stream job is ongoing opts['backing']['backing'] = None self.reopen(opts['backing'], {'read-only': False}, - "Cannot change 'backing' link from 'hd1' to 'hd2'") + "Cannot change frozen 'backing' link from 'hd1' to 'hd2'") # We can detach hd1 from hd0 because it doesn't affect the stream job opts['backing'] = None @@ -933,11 +933,11 @@ class TestBlockdevReopen(iotests.QMPTestCase): # We can't remove hd2 while the commit job is ongoing opts['backing']['backing'] = None - self.reopen(opts, {}, "Cannot change 'backing' link from 'hd1' to 'hd2'") + self.reopen(opts, {}, "Cannot change frozen 'backing' link from 'hd1' to 'hd2'") # We can't remove hd1 while the commit job is ongoing opts['backing'] = None - self.reopen(opts, {}, "Cannot change 'backing' link from 'hd0' to 'hd1'") + self.reopen(opts, {}, "Cannot change frozen 'backing' link from 'hd0' to 'hd1'") event = self.vm.event_wait(name='BLOCK_JOB_READY') self.assert_qmp(event, 'data/device', 'commit0') -- 2.31.1