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Thu, 22 Aug 2019 11:27:30 +0000 (UTC) Received: from localhost.localdomain (ovpn-204-35.brq.redhat.com [10.40.204.35]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6383360603; Thu, 22 Aug 2019 11:27:29 +0000 (UTC) To: Max Reitz , QEMU Developers , qemu-block@nongnu.org, Anton Nefedov , Andrew Jones References: From: =?UTF-8?B?THVrw6HFoSBEb2t0b3I=?= Openpgp: preference=signencrypt Autocrypt: addr=ldoktor@redhat.com; prefer-encrypt=mutual; keydata= mQENBFcV6vsBCADa8NUYov+a+AmCEEUB3stiiMM0NQc1WwlcxGoMxKHcqqIj/kdPhUDvFS32 V94V7en1Lx+cpXKRMZP3n+3WG+VZWLwaktJgqrECZ161zE7xF5d1H3CLmwStbe6Cw1oR4LYQ HBpuqFEA5znoLuTTsP1uXs9h1cYNzX7hmOTvPCLJfDJ1iv954FsgCGtoVvl4CoxaR3u2VNOs hXsTTVyJM6gDTsyqn0uvLOHGWGIGVhDkLV4hv6pSdiKrtQKWIUji3Z8x41MbZybmJxHkpOVz Jl3jnNE3CbiEq77Is9LMI4yTF2CESs3V4XMBLfZPLrQBC0gzjeRxwCnbdOZRwY5KI457ABEB AAG0K0x1a2FzIERva3RvciAoUmVkIEhhdCkgPGxkb2t0b3JAcmVkaGF0LmNvbT6JAVUEEwEC AD8CGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAFiEEpApMRcQDTeAqWtSDJrNi5H/PIsEF AlqVjq0FCQdCCrIACgkQJrNi5H/PIsFF1Qf+K23kB5iOvsbe/swQda9nJZSgKkbXLCF3KCdw jCY3qdneHzro696qosRhWn+tpLQ6Mp8sgnXuJk96qaptXtx0R1Ci2oHFo01WfcSLZ1f99/0q dWGWJhTt2TPNP6A5rrw//FZlQOYNTYG9vn7euLE0el32ZQp/0HCO7XpLiujEX48fWdlaPmDO nalJEpzzJJNu8WnHIG2eLS8lGrNdnPbkxHyeERxPuWDAmHmWyZSaDMtMd40XVKfLfkyY83jz +uq8uMxPMzq116YvFygsXqJPgWGYX39BdasEssr/GABHqgKY54dtTdMnFZZFVowkoCSh2Al/ X/OSk5wpyYZrEYeKNLkBDQRXFer7AQgAw8JIK9pZUfZWNZirBIwOevkdZu1aLhgH84EfXw40 ynMEFa1t/c0baOiuLNcVbdnHLGvUAQJ2oN/+rdGpEWITVSjDxFYf3JOnySZJhLnQgGMG4j3m dFZMubPG1GJEuubPAAB0huRfjQTvOvpIK03J2H5cMoug862OHOnT+mfonGruTkSO0PBq3wtf P+Z3gLCuEDkmEZSh4IKxs0CoLU4KxWRQHpoTOxcAiHzj8cm5qbu3Cb1KrXz8dEmYhCq2fpFf /h+GfEO8gU/ICJD8WQUHYcVK0bbiZskCcSOGtStjwq0QqitZMbcsPEset/2L3z44MLPuVApv c9wORs/3iT9BhwARAQABiQE8BBgBAgAmAhsMFiEEpApMRcQDTeAqWtSDJrNi5H/PIsEFAlqV j3sFCQdCC4AACgkQJrNi5H/PIsG+JAf/emslPCAW4gmn3Ep1ON0V0xPGxFOUbH2m+f079pVP Jo3dGT6ZFF8q00GEsqxjpxO/c0opsTFrAN3qyTS3Kr4435ua66J5eP+TBkjN+vljmRi3T9Xg h/dHp0JkZQCtcnmNsm/9F0/GzMvc7CnsptDp4aT0KGMfpvv7XrQOkprSr2wgWeAdNVhCP2ZQ y+yAzLmHe5OGPW1qPmIBBvEnU2C8av0ONGKIxIAUCF8UCm+YJzPwIwJLhkzrhANiqNwQXwfn j8HaEsOCIX26S4GYYmIaY1+GBeHkeh0R/GzERRPh6jfhg2JiCE6ftgZ+DKRjsK3o1uw40aYe s/q9jwLlkaqraQ== Message-ID: <84dd318a-28d4-b2f3-b03b-d870a5f618d5@redhat.com> Date: Thu, 22 Aug 2019 13:27:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="JMETg6tLlCW7WLdINt3fgZ7aE2LuyV16y" 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 [10.5.110.30]); Thu, 22 Aug 2019 11:27:30 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] Broken aarch64 by qcow2: skip writing zero buffers to empty COW areas [v2] 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: , 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) --JMETg6tLlCW7WLdINt3fgZ7aE2LuyV16y Content-Type: multipart/mixed; boundary="to2uG6j22FkBTv5upfPviss6Q3teC94fZ"; protected-headers="v1" From: =?UTF-8?B?THVrw6HFoSBEb2t0b3I=?= To: Max Reitz , QEMU Developers , qemu-block@nongnu.org, Anton Nefedov , Andrew Jones Message-ID: <84dd318a-28d4-b2f3-b03b-d870a5f618d5@redhat.com> Subject: Re: Broken aarch64 by qcow2: skip writing zero buffers to empty COW areas [v2] References: In-Reply-To: --to2uG6j22FkBTv5upfPviss6Q3teC94fZ Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Dne 21. 08. 19 v 19:51 Max Reitz napsal(a): > On 21.08.19 16:14, Luk=C3=A1=C5=A1 Doktor wrote: >> Hello guys, >> >> First attempt was rejected due to zip attachment, let's try it again w= ith just Avocado-vt debug.log and serial console log files attached. >> >> I bisected a regression on aarch64 all the way to this commit: "qcow2:= skip writing zero buffers to empty COW areas" c8bb23cbdbe32f5c326365e0a8= 2e1b0e68cdcd8a. Would you please have a look at it? >=20 > I think I can see the issue on my x64 system (I don=E2=80=99t see the X= FS > corruption, but the installation fails because of some segfaults). >=20 > I haven=E2=80=99t found a simpler way to reproduce the problem yet, tho= ugh, > which is a pain... :-/ >=20 > It looks like the problem disappears when I configure qemu with > =E2=80=9C--disable-xfsctl=E2=80=9D. Can you try that? >=20 > Max >=20 Hello Max, yes, I'm getting the same behavior. With "--disable-xfsctl" it works well= =2E Also looking at the option I understand why it only failed on aarch64= for me, I don't have libs installed on the other machines, therefor it w= as disabled by "./configure" there. Anyway I guess disabling it in my bui= lds won't really fix the issue, right? :-) Regards, Luk=C3=A1=C5=A1 --to2uG6j22FkBTv5upfPviss6Q3teC94fZ-- --JMETg6tLlCW7WLdINt3fgZ7aE2LuyV16y Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEpApMRcQDTeAqWtSDJrNi5H/PIsEFAl1efCAACgkQJrNi5H/P IsG3AQgAm4ro8ZCCtmPFPYaL9s9cNFPB5IM7lfeJJkWhXCJFCHSTojB9hIhjdVer YmkLqDR6ukp9WmjJUyvd1bcc8BPh3DuI+hZE3JV0iW7OfVIKGyxrDWH27TaBRnhh gR1oS+WC63nmM4kN49sHcO1cn2cdtYkgy28Xuq7jXPG7Bz5aowlt4g59+woPV2+3 OySLKq5FsCerPpaTtl1+9mFV9O8dH2jP0VQrPhbhAD/1gdRgltP1YxJHiNpw7gbH OO1AE/7qXl/7MtZA7TiF65tle525Sp6Qji6mm/TFhkzhvl6T9VCrukZibaR7SlLp PqLR2JSwY5MgCuUx3cftxnqtatL+Fg== =CRBq -----END PGP SIGNATURE----- --JMETg6tLlCW7WLdINt3fgZ7aE2LuyV16y--