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=-0.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY 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 EFCC0C433DF for ; Tue, 13 Oct 2020 15:04:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADFE6248CD for ; Tue, 13 Oct 2020 15:04:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727137AbgJMPEn (ORCPT ); Tue, 13 Oct 2020 11:04:43 -0400 Received: from 6.mo179.mail-out.ovh.net ([46.105.56.76]:45590 "EHLO 6.mo179.mail-out.ovh.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726157AbgJMPEm (ORCPT ); Tue, 13 Oct 2020 11:04:42 -0400 X-Greylist: delayed 3608 seconds by postgrey-1.27 at vger.kernel.org; Tue, 13 Oct 2020 11:04:42 EDT Received: from player795.ha.ovh.net (unknown [10.108.35.240]) by mo179.mail-out.ovh.net (Postfix) with ESMTP id D82C817B6FD for ; Tue, 13 Oct 2020 15:46:51 +0200 (CEST) Received: from grubelek.pl (89-77-39-184.dynamic.chello.pl [89.77.39.184]) (Authenticated sender: szarpaj@grubelek.pl) by player795.ha.ovh.net (Postfix) with ESMTPSA id 2B95A16F93A6E; Tue, 13 Oct 2020 13:46:49 +0000 (UTC) Authentication-Results: garm.ovh; auth=pass (GARM-101G004f01e56be-0a30-4757-8a4a-5aae3aab91e0, AA506B1D2CAA152689122792A0433A89576A5AF1) smtp.auth=szarpaj@grubelek.pl Received: by teh mailsystemz id 11F2527C6179; Tue, 13 Oct 2020 15:46:48 +0200 (CEST) Date: Tue, 13 Oct 2020 15:46:48 +0200 From: Piotr Szymaniak To: Johannes Thumshirn Cc: Hendrik Friedel , "linux-btrfs@vger.kernel.org" Subject: Re: Raid5 Write Hole: Is it worse than in MD? Message-ID: <20201013134648.GG4220@pontus> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="n8g4imXOkfNTN/H1" Content-Disposition: inline In-Reply-To: X-Ovh-Tracer-Id: 12667218377992836674 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedujedrheelgdeilecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemucehtddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpeffhffvuffkfhggtggujgesghdtreertddtjeenucfhrhhomheprfhiohhtrhcuufiihihmrghnihgrkhcuoehsiigrrhhprghjsehgrhhusggvlhgvkhdrphhlqeenucggtffrrghtthgvrhhnpeejheffvdelkeefhfeuieetfeeugfevgfelgfefiefhtdethfeuvdekleevvdejveenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecukfhppedtrddtrddtrddtpdekledrjeejrdefledrudekgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhhouggvpehsmhhtphdqohhuthdphhgvlhhopehplhgrhigvrhejleehrdhhrgdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomhepshiirghrphgrjhesghhruhgsvghlvghkrdhplhdprhgtphhtthhopehlihhnuhigqdgsthhrfhhssehvghgvrhdrkhgvrhhnvghlrdhorhhg Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org --n8g4imXOkfNTN/H1 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 13, 2020 at 09:43:25AM +0000, Johannes Thumshirn wrote: > *snip* > For the other problems of raid56, Zygo once compiled a very comprehensive= list, > but I don't have the link anymore. This list (both user/dev): https://lore.kernel.org/linux-btrfs/20200627032414.GX10769@hungrycats.org/ https://lore.kernel.org/linux-btrfs/20200627030614.GW10769@hungrycats.org/ Best regards, Piotr Szymaniak. --=20 Chyba musze juz wracac do sklepu. Kelly jest w porzadku, ale czasem potrafi zupelnie sie wylaczyc. I do tego nie wierzy w cos takiego jak odpowiedzialnosc. Ma to jakis zwiazek z ta sekta, do ktorej nalezy. Maharishi Woda-z-mozgu czy cos w tym stylu. -- Graham Masterton, "Mirror" --n8g4imXOkfNTN/H1 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEFSphDYLXjiCg60ZUQykCi/VzD2UFAl+Fr8IACgkQQykCi/Vz D2Us0w/+NnR30fqmsLF6sDXhK6rXaV+L1FMfV/XI3L8zx5YH1uZXLgpW4mHQyvTP X+2wOM2s7FI87s3eWGkUQ8Ns5uTBgn64RbkyWWO9rnzzdvxmTPI6RcNEyDELIV6I GqL9sg5UQojnuVxlpld/T+iCLr/GVNUrzsMZIJ1wsyc6tp7mTWf2opopt2cfIce5 QdpUkb+MF27AZuGLtHS8kMYSm7JGy3zF9Zv8eczENOLq0BntmpmTHZbyax7Cyhnm qiv/xMM92FOLawOvHNeOJdHnA4tq+DvJCWWoyirafzaus9tma+1EatqE1Ae60Y5s eQgPeKvpKt7JY1vG/XlWysoYOQExs+Z/Iw60exWSRFwmPSKz5t+9kcohDwjFmyA1 FyvcE1ajjApkQz0c8TEQbqxt6UReZa7zHmqLIiCNtBT/p80qP0/G0CtfwqD2k8jB jn3Tr4HXE5mE1ANhTjIHVG/DHQUi33bleHb1l+z0x73cXBtVG+UWUQGQsYz9f5A+ SgAz+zz9aW8yt/VuO5htyk2hGcKhDQqPOYJj413ZMXME3ysBC0Hocf97kF5JRriE ZwxDQndXjJhMOmTxuxwvsuMw1vLQQ1UPAP348z6AEF9uCmT5jifzL+Aao1m/Mn8w ZmbD15+A3IHgp0mu7WttNpDR5Ksnj6EuVZPT3Q9zTvLZ4LEmzkA= =9VpT -----END PGP SIGNATURE----- --n8g4imXOkfNTN/H1--