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Fri, 25 Oct 2019 14:21:51 +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 9839560161; Fri, 25 Oct 2019 14:21:46 +0000 (UTC) Subject: Re: [RFC 0/3] block/file-posix: Work around XFS bug To: Peter Maydell References: <20191025095849.25283-1-mreitz@redhat.com> <19d50c64-c07a-3122-dea3-a5d97a2d35da@redhat.com> 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: Date: Fri, 25 Oct 2019 16:21:44 +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: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="3aC9MOCt6r2YUj7Yo712cMCUyLL6QtFIC" 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: Kevin Wolf , Vladimir Sementsov-Ogievskiy , Alberto Garcia , Qemu-block , QEMU Developers , Anton Nefedov , Stefan Hajnoczi 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) --3aC9MOCt6r2YUj7Yo712cMCUyLL6QtFIC Content-Type: multipart/mixed; boundary="VVSIXE89QQF5Q5VM8w7xJWqbIPyC6yDfv" --VVSIXE89QQF5Q5VM8w7xJWqbIPyC6yDfv Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 25.10.19 16:17, Peter Maydell wrote: > On Fri, 25 Oct 2019 at 15:16, Max Reitz wrote: >> >> On 25.10.19 15:46, Peter Maydell wrote: >>> On Fri, 25 Oct 2019 at 11:09, Max Reitz wrote: >>>> >>>> Hi, >>>> >>>> It seems to me that there is a bug in Linux=E2=80=99s XFS kernel drive= r, as >>>> I=E2=80=99ve explained here: >>>> >>>> https://lists.nongnu.org/archive/html/qemu-block/2019-10/msg01429.html >>>> >>>> In combination with our commit c8bb23cbdbe32f, this may lead to guest >>>> data corruption when using qcow2 images on XFS with aio=3Dnative. >>> >>> Have we reported that upstream to the xfs folks? >> >> I=E2=80=99ve created an RH BZ here: >> >> https://bugzilla.redhat.com/show_bug.cgi?id=3D1765547 >=20 > Currently "You are not authorized to access bug #1765547." for > anonymous browsers, just fyi. Err. Oops. That wasn=E2=80=99t my intention. I hate that misfeature. Thanks for telling me, I fixed it. :-) Max --VVSIXE89QQF5Q5VM8w7xJWqbIPyC6yDfv-- --3aC9MOCt6r2YUj7Yo712cMCUyLL6QtFIC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl2zBPgACgkQ9AfbAGHV z0ACMQf/UA+9juzD/yXWmEwRICxYRBizaHX8E7d08uJYnwU+HB76KH/zohHUwDIF Lrqp7pHvEdDH7RT5bHZMymvmvVS77dN6abLoLKpzdEp2X4D7FlSyIT1mQaVxUBpJ eCjSUT7YMYmN1oGfb37mo0xEdY64dVrTv4fcu1XM1ixQbZamrwLnABp1mjAgswwS L8bfh7/t+X5oT+A0/VcHvS87mlCY74vkiyRLr95pOxlS7xwj/ARyP4asV0GmNiN6 NzxTHhOew4HpEBKRRTMXs3Vk8u7wYMwh1nKk2lI1Qu1QQtlygka2xLHJZ1d6g5hJ bK0tvkcyO2NdWvqohNSziitngjZdtg== =CrHJ -----END PGP SIGNATURE----- --3aC9MOCt6r2YUj7Yo712cMCUyLL6QtFIC--