From nobody Mon Feb 9 10:58:34 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; spf=pass (zoho.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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1562191656; cv=none; d=zoho.com; s=zohoarc; b=UuBbJ6ECKAFDoC8g5LgN8CdAm0ySSljpdGlDIn4s4StGr/m6H63M0OLuT0MSfzO4rqoNm3RFzBQdcShjtnGRFjxHNSSj4NtqnJcqMHdwEgtlOtyb88Bzf3/+fdne24AXFssQ/Pbrd/TzQMy40IXQW5aeCz3NOLEl9EgjsLzUZdE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1562191656; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=5wLSxF/Xwcr9IxMm0POGfywHi+z/Cd0YKXaN0KyRpdU=; b=dsaPYkdDaC+nTw8N7v9+39bme6u6lvYRcpvZGZrNztJlzNKW6efrSe8AxPUVb/v6H+dHPV8Tw4ov9lFpILG9RkaDN4jQAI6/TnJGDEf+nyVPVsXfPWglUeh+b2ihaLErDreBtx3n4DNm1Lpwc/ZavW7/YeisrjrMFdsjDmjTI2s= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1562191656699677.9734279091285; Wed, 3 Jul 2019 15:07:36 -0700 (PDT) Received: from localhost ([::1]:41240 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hinPb-0001Nx-4o for importer@patchew.org; Wed, 03 Jul 2019 18:07:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46707) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hinGI-0007EL-4Q for qemu-devel@nongnu.org; Wed, 03 Jul 2019 17:57:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hinGG-0005PY-3A for qemu-devel@nongnu.org; Wed, 03 Jul 2019 17:57:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44116) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hinG6-00051s-NL; Wed, 03 Jul 2019 17:57:46 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 620B485545; Wed, 3 Jul 2019 21:57:38 +0000 (UTC) Received: from probe.redhat.com (ovpn-123-117.rdu2.redhat.com [10.10.123.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8008652737; Wed, 3 Jul 2019 21:57:36 +0000 (UTC) From: John Snow To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Wed, 3 Jul 2019 17:55:42 -0400 Message-Id: <20190703215542.16123-19-jsnow@redhat.com> In-Reply-To: <20190703215542.16123-1-jsnow@redhat.com> References: <20190703215542.16123-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 03 Jul 2019 21:57:38 +0000 (UTC) Content-Transfer-Encoding: quoted-printable 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] [PATCH v2 18/18] block/backup: loosen restriction on readonly bitmaps 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: Kevin Wolf , Fam Zheng , vsementsov@virtuozzo.com, Juan Quintela , John Snow , Xie Changlong , Markus Armbruster , "Dr. David Alan Gilbert" , Stefan Hajnoczi , Wen Congyang , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" With the "never" sync policy, we actually can utilize readonly bitmaps now. Loosen the check at the QMP level, and tighten it based on provided arguments down at the job creation level instead. Signed-off-by: John Snow Reviewed-by: Max Reitz --- block/backup.c | 6 ++++++ blockdev.c | 2 +- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/block/backup.c b/block/backup.c index 495d8f71aa..4abe90d462 100644 --- a/block/backup.c +++ b/block/backup.c @@ -598,6 +598,12 @@ BlockJob *backup_job_create(const char *job_id, BlockD= riverState *bs, return NULL; } =20 + /* If we need to write to this bitmap, check that we can: */ + if (bitmap_mode !=3D BITMAP_SYNC_MODE_NEVER && + bdrv_dirty_bitmap_check(sync_bitmap, BDRV_BITMAP_DEFAULT, errp= )) { + return NULL; + } + /* Create a new bitmap, and freeze/disable this one. */ if (bdrv_dirty_bitmap_create_successor(bs, sync_bitmap, errp) < 0)= { return NULL; diff --git a/blockdev.c b/blockdev.c index d5b089a446..020ce7e960 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3492,7 +3492,7 @@ static BlockJob *do_backup_common(BackupCommon *backu= p, error_setg(errp, "Bitmap '%s' could not be found", backup->bit= map); goto out; } - if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_DEFAULT, errp)) { + if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) { goto out; } } --=20 2.21.0