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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]:38114 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kGKDi-0002vc-9J for qemu-devel@archiver.kernel.org; Thu, 10 Sep 2020 06:54:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55620) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kGKDA-0002O8-Aq for qemu-devel@nongnu.org; Thu, 10 Sep 2020 06:53:52 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:26599) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kGKD8-0005rU-PV for qemu-devel@nongnu.org; Thu, 10 Sep 2020 06:53:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599735229; 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: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=CKxNoenD4vadztZO7HTMtPEOAQMffdaqY6lPZ5A+y0g=; b=LkuA7wUxlxklpo6+hRlkUNlgLZRLc2nDIXaJaPp3SHrZIiKxb4X3nPwlbYcm+sOR38hlCH HwF2J37a+tuZmDsFRcGkNR8vAOVDjTsUXlCO04gfRSo4PDKqD91iAc+Ll4GB71tLmDSruh bSFp5X3mWszS6PUqH9chzNhZ+yZJPdU= 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-121-SKWcQ_EHMISVYg5McuNSLw-1; Thu, 10 Sep 2020 06:53:47 -0400 X-MC-Unique: SKWcQ_EHMISVYg5McuNSLw-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 9D0558030C7; Thu, 10 Sep 2020 10:53:46 +0000 (UTC) Received: from dresden.str.redhat.com (ovpn-112-197.ams2.redhat.com [10.36.112.197]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 95F239CBA; Thu, 10 Sep 2020 10:53:45 +0000 (UTC) Subject: Re: [PATCH 07/29] block/export: Remove magic from block-export-add To: Kevin Wolf , qemu-block@nongnu.org References: <20200907182011.521007-1-kwolf@redhat.com> <20200907182011.521007-8-kwolf@redhat.com> From: Max Reitz Autocrypt: addr=mreitz@redhat.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200907182011.521007-8-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0.0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jOGxOtasyKNZCupWcqVvxNKypdDGu4KJx" Received-SPF: pass client-ip=216.205.24.124; envelope-from=mreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/10 00:49:43 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -56 X-Spam_score: -5.7 X-Spam_bar: ----- X-Spam_report: (-5.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-3.576, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --jOGxOtasyKNZCupWcqVvxNKypdDGu4KJx Content-Type: multipart/mixed; boundary="iuUoPUWlpPPjZqNwijsoFbhepdlnG4hrJ" --iuUoPUWlpPPjZqNwijsoFbhepdlnG4hrJ Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 07.09.20 20:19, Kevin Wolf wrote: > nbd-server-add tries to be convenient and adds two questionable > features that we don't want to share in block-export-add, even for NBD > exports: >=20 > 1. When requesting a writable export of a read-only device, the export > is silently downgraded to read-only. This should be an error in the > context of block-export-add. >=20 > 2. When using a BlockBackend name, unplugging the device from the guest > will automatically stop the NBD server, too. This may sometimes be > what you want, but it could also be very surprising. Let's keep > things explicit with block-export-add. If the user wants to stop the > export, they should tell us so. >=20 > Move these things into the nbd-server-add QMP command handler so that > they apply only there. >=20 > Signed-off-by: Kevin Wolf > --- > include/block/export.h | 2 ++ > include/block/nbd.h | 3 ++- > block/export/export.c | 13 +++++++++--- > blockdev-nbd.c | 47 +++++++++++++++++++++++++++++++++++------- > nbd/server.c | 20 +++++++++++------- > qemu-nbd.c | 3 +-- > 6 files changed, 67 insertions(+), 21 deletions(-) [...] > + if (bdrv_is_read_only(bs)) { > + export_opts.u.nbd.has_writable =3D true; Ah, yes, setting that might be nice. :) Reviewed-by: Max Reitz --iuUoPUWlpPPjZqNwijsoFbhepdlnG4hrJ-- --jOGxOtasyKNZCupWcqVvxNKypdDGu4KJx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl9aBbcACgkQ9AfbAGHV z0Ck/wgAoN1MLCcdwrNyq7BlBlhghHsDwdoQ5ERU8miUN/iQpM42RueQzexnN4pj DIsKhTAAiWcP6ZUj6LZcMMmqDe1ZBwfGO7i+SwKQTi1kr2PMsHdci3vtXSgV/LIE lHQuli4/i584VN3MxPueUWAI8Slc99Xx4T1/otTSpQ+3DRNmz9o4ArUIYPqx30eA ZKYqL9rcN7F6UT4tQg1kAHiJk0p/X1xpwiKruj5EUv/VjFWx+dhZr9GfwIHUjZ7Z PyaJ4UOa06aS8+0m2Yx4Z4Sf8TNFqyNBFjLHtvliP+T2geJlYjNSwkT539q5w98p LvF7fTQmx2OTFarAogWbFduFeYtOJQ== =Gnh6 -----END PGP SIGNATURE----- --jOGxOtasyKNZCupWcqVvxNKypdDGu4KJx--