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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DE34C433EF for ; Thu, 4 Nov 2021 09:03:16 +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 B51C961157 for ; Thu, 4 Nov 2021 09:03:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B51C961157 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:60444 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1miYeQ-0002I3-NI for qemu-devel@archiver.kernel.org; Thu, 04 Nov 2021 05:03:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54142) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1miYa3-0003n7-I1 for qemu-devel@nongnu.org; Thu, 04 Nov 2021 04:58:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:44017) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1miYa2-000115-3n for qemu-devel@nongnu.org; Thu, 04 Nov 2021 04:58:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636016321; 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=hPrajxVI3EG7oEK3FbUHDchzsqfsHSPzqU9rl06oiDc=; b=LlRLV/mGqVprvAbe7rl79bYqNTXp0I3HVOas2DuQSj/qU++8e5fLx7eQu0mXYDjonPUWK3 9fKrAN9eG6RhWrPEWiO0qZqDXR0M600tCdB7G+TUCZmkPPuA+YW30noZjgHfPDzFB3t9Xt KVuXmR/JksR1IHqdiH4IvaBxnnbKzlw= 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-586-6XADHIaXNd-2iWcSqLAlDA-1; Thu, 04 Nov 2021 04:58:40 -0400 X-MC-Unique: 6XADHIaXNd-2iWcSqLAlDA-1 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 39EC41006AA3; Thu, 4 Nov 2021 08:58:39 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-7.ams2.redhat.com [10.36.112.7]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2FB6B708E2; Thu, 4 Nov 2021 08:58:13 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B6A7C11380AA; Thu, 4 Nov 2021 09:58:11 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v4 1/3] docs/block-replication: use blockdev-backup Date: Thu, 4 Nov 2021 09:58:09 +0100 Message-Id: <20211104085811.1736654-2-armbru@redhat.com> In-Reply-To: <20211104085811.1736654-1-armbru@redhat.com> References: <20211104085811.1736654-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@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=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.717, 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_H2=-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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vsementsov@virtuozzo.com, qemu-block@nongnu.org, kchamart@redhat.com, libvir-list@redhat.com, jsnow@redhat.com, xiechanglong.d@gmail.com, wencongyang2@huawei.com, eblake@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy We are going to deprecate drive-backup, so don't mention it here. Moreover, blockdev-backup seems more correct in the context. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: John Snow Signed-off-by: Markus Armbruster --- docs/block-replication.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/block-replication.txt b/docs/block-replication.txt index 108e9166a8..59eb2b33b3 100644 --- a/docs/block-replication.txt +++ b/docs/block-replication.txt @@ -79,7 +79,7 @@ Primary | || Secondary disk <--------- hidden-disk 5 <--------- || | | || | | || '-------------------------' - || drive-backup sync=none 6 + || blockdev-backup sync=none 6 1) The disk on the primary is represented by a block device with two children, providing replication between a primary disk and the host that @@ -101,7 +101,7 @@ should support bdrv_make_empty() and backing file. that is modified by the primary VM. It should also start as an empty disk, and the driver supports bdrv_make_empty() and backing file. -6) The drive-backup job (sync=none) is run to allow hidden-disk to buffer +6) The blockdev-backup job (sync=none) is run to allow hidden-disk to buffer any state that would otherwise be lost by the speculative write-through of the NBD server into the secondary disk. So before block replication, the primary disk and secondary disk should contain the same data. -- 2.31.1