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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 7E916CA9EA0 for ; Fri, 25 Oct 2019 15:47:40 +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 494E021D7B for ; Fri, 25 Oct 2019 15:47:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BtL7dz1d" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 494E021D7B 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]:34012 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iO1oR-0004Ry-CF for qemu-devel@archiver.kernel.org; Fri, 25 Oct 2019 11:47:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46261) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iO0dS-0001fl-P3 for qemu-devel@nongnu.org; Fri, 25 Oct 2019 10:32:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iO0dJ-0006d6-Tn for qemu-devel@nongnu.org; Fri, 25 Oct 2019 10:32:11 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:21695 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iO0dJ-0006cu-PE for qemu-devel@nongnu.org; Fri, 25 Oct 2019 10:32:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572013924; 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=01ydqPz74PUrLn5jDH5RwSZa4rAxHFA2SBT0L/xShV4=; b=BtL7dz1dI7o+8KZKftEOCgoZld06AmFAwstUvkA3FODvWzhTDqNmbXUuIL+a43RfmxZK22 aHGUBDZdgmGcmeGq9CKr69G+cbHQcJjIELe+OMRkbTKDnT849s185VH28Wawu4UxZK0O18 CumBVwwYTzG47iPeUCC3yBB95x6eHng= 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-1-K492A7EMP4ax4UwuzLCJFg-1; Fri, 25 Oct 2019 10:32:03 -0400 X-MC-Unique: K492A7EMP4ax4UwuzLCJFg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BF3501005509; Fri, 25 Oct 2019 14:32:01 +0000 (UTC) Received: from dresden.str.redhat.com (ovpn-117-230.ams2.redhat.com [10.36.117.230]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B684D5D9CA; Fri, 25 Oct 2019 14:32:00 +0000 (UTC) Subject: Re: Early 4.1.1 release for image corruption fixes? To: Kevin Wolf , mdroth@linux.vnet.ibm.com References: <20191025142915.GG7275@localhost.localdomain> From: Max Reitz Autocrypt: addr=mreitz@redhat.com; prefer-encrypt=mutual; keydata= mQENBFXOJlcBCADEyyhOTsoa/2ujoTRAJj4MKA21dkxxELVj3cuILpLTmtachWj7QW+TVG8U /PsMCFbpwsQR7oEy8eHHZwuGQsNpEtNC2G/L8Yka0BIBzv7dEgrPzIu+W3anZXQW4702+uES U29G8TP/NGfXRRHGlbBIH9KNUnOSUD2vRtpOLXkWsV5CN6vQFYgQfFvmp5ZpPeUe6xNplu8V mcTw8OSEDW/ZnxJc8TekCKZSpdzYoxfzjm7xGmZqB18VFwgJZlIibt1HE0EB4w5GsD7x5ekh awIe3RwoZgZDLQMdOitJ1tUc8aqaxvgA4tz6J6st8D8pS//m1gAoYJWGwwIVj1DjTYLtABEB AAG0HU1heCBSZWl0eiA8bXJlaXR6QHJlZGhhdC5jb20+iQFTBBMBCAA9AhsDBQkSzAMABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheABQJVzie5FRhoa3A6Ly9rZXlzLmdudXBnLm5ldAAKCRD0 B9sAYdXPQDcIB/9uNkbYEex1rHKz3mr12uxYMwLOOFY9fstP5aoVJQ1nWQVB6m2cfKGdcRe1 2/nFaHSNAzT0NnKz2MjhZVmcrpyd2Gp2QyISCfb1FbT82GMtXFj1wiHmPb3CixYmWGQUUh+I AvUqsevLA+WihgBUyaJq/vuDVM1/K9Un+w+Tz5vpeMidlIsTYhcsMhn0L9wlCjoucljvbDy/ 8C9L2DUdgi3XTa0ORKeflUhdL4gucWoAMrKX2nmPjBMKLgU7WLBc8AtV+84b9OWFML6NEyo4 4cP7cM/07VlJK53pqNg5cHtnWwjHcbpGkQvx6RUx6F1My3y52vM24rNUA3+ligVEgPYBuQEN BFXOJlcBCADAmcVUNTWT6yLWQHvxZ0o47KCP8OcLqD+67T0RCe6d0LP8GsWtrJdeDIQk+T+F xO7DolQPS6iQ6Ak2/lJaPX8L0BkEAiMuLCKFU6Bn3lFOkrQeKp3u05wCSV1iKnhg0UPji9V2 W5eNfy8F4ZQHpeGUGy+liGXlxqkeRVhLyevUqfU0WgNqAJpfhHSGpBgihUupmyUg7lfUPeRM DzAN1pIqoFuxnN+BRHdAecpsLcbR8sQddXmDg9BpSKozO/JyBmaS1RlquI8HERQoe6EynJhd 64aICHDfj61rp+/0jTIcevxIIAzW70IadoS/y3DVIkuhncgDBvGbF3aBtjrJVP+5ABEBAAGJ ASUEGAEIAA8FAlXOJlcCGwwFCRLMAwAACgkQ9AfbAGHVz0CbFwf9F/PXxQR9i4N0iipISYjU sxVdjJOM2TMut+ZZcQ6NSMvhZ0ogQxJ+iEQ5OjnIputKvPVd5U7WRh+4lF1lB/NQGrGZQ1ic alkj6ocscQyFwfib+xIe9w8TG1CVGkII7+TbS5pXHRxZH1niaRpoi/hYtgzkuOPp35jJyqT/ /ELbqQTDAWcqtJhzxKLE/ugcOMK520dJDeb6x2xVES+S5LXby0D4juZlvUj+1fwZu+7Io5+B bkhSVPb/QdOVTpnz7zWNyNw+OONo1aBUKkhq2UIByYXgORPFnbfMY7QWHcjpBVw9MgC4tGeF R4bv+1nAMMxKmb5VvQCExr0eFhJUAHAhVg== Message-ID: <59c32499-04b8-87ba-1740-081fe0b2f21c@redhat.com> Date: Fri, 25 Oct 2019 16:31:59 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <20191025142915.GG7275@localhost.localdomain> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="6bPpYFg25KYD9iqJ4mYkPxlvZbsauYFcm" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: peter.maydell@linaro.org, qemu-devel@nongnu.org, qemu-block@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) --6bPpYFg25KYD9iqJ4mYkPxlvZbsauYFcm Content-Type: multipart/mixed; boundary="bw7fLMo3u3HfH57gKi6MLqSltOTAFc1Iw" --bw7fLMo3u3HfH57gKi6MLqSltOTAFc1Iw Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 25.10.19 16:29, Kevin Wolf wrote: > Hi, >=20 > the QEMU 4.1.0 release has two problems that can easily cause image > corruption with any qcow2 images (no special configuration needed to > trigger the bugs): Three, actually. There=E2=80=99s also b2c6f23f4a9f6d8f1b648705cd46d3713b78= d6a2 which fixed 50ba5b2d994853b38fed10e0841b119da0f8b8e5 that was part of 4.1.0, too. > 1. A locking bug in the qcow2 code. I just sent a pull request that > includes the fix for this. The important patch there is: >=20 > 'qcow2: Fix corruption bug in qcow2_detect_metadata_preallocation()' >=20 > 2. A kernel bug in the XFS driver that became visible by new I/O > patterns the qcow2 implementation started to use in 4.1. Max is > currently working on a workaround for this. You most likely won=E2=80=99t see the kernel bug on 4.1.0, because 50ba5b2d= 99 is basically the same bug, but in qemu... (I don=E2=80=99t know if it has the same technical reason, but it causes th= e same symptoms.) Max > The Planning/4.1 wiki page tells me that a 4.1.1 release is planned for > end of November, which isn't too far, but I was wondering if want to > have a stable release even earlier, right after the fixes for both > problems are in. >=20 > Peter, if we haven't made a decision until then, maybe discussing this > is an agenda item for QEMU Summit, too. >=20 > Kevin >=20 --bw7fLMo3u3HfH57gKi6MLqSltOTAFc1Iw-- --6bPpYFg25KYD9iqJ4mYkPxlvZbsauYFcm Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl2zB18ACgkQ9AfbAGHV z0BxSAf/WttKdJOFgDdRfMAM4clgY07gFSXhWclnQvvomFStGeTMgCar91NgyLGd P9piR+b5rlhRJsUAW8fKnuB9F8cLxAaOZnqqLv47C9Vd43mNguP5gO2Vq8EXM6xO 0YSaWeHjCIFA70U6Xb85rle8GpBOMH/fRTL0X9dWN2c3cKDj7HXv9ON/LtPJ10Fu GmXP/HgI2Q+sTNuMP2N04ta5E0PG/RSX+ZCF9rqlUDqa3a7s0tj/BjcxIRjReQz5 veblwJiL7yeFKIEjp2ixiukdlukXhPljq/LcnUN1nOnZFMl81LNXInjKdblTn0ed 382gcMKP1DaPfDKE16qPnzQcFtTx+A== =U13L -----END PGP SIGNATURE----- --6bPpYFg25KYD9iqJ4mYkPxlvZbsauYFcm--