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=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 66B5BC43219 for ; Fri, 3 May 2019 07:34:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 24A742075C for ; Fri, 3 May 2019 07:34:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="E3aK80js" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726543AbfECHej (ORCPT ); Fri, 3 May 2019 03:34:39 -0400 Received: from mout.gmx.net ([212.227.15.19]:43377 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726514AbfECHei (ORCPT ); Fri, 3 May 2019 03:34:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1556868875; bh=FPWo36wnAReSjtFeDnI5+59gVmL0uEVYOC+hVyn4Jbs=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=E3aK80jsmfCNHGDoXhwidlrg8Tcg0Ij7ZVem3rVM5PwoQeZYMvlbGHppWS/tRHWH+ /6/pLKbRxxL50M8Yp9gFGhBbzhQLJS6OsQEOod9HVYkJXz1xvzseY+LJzHfDdeaCH1 jmjc1r/Kr5M05sk/66mWwklPRf4ECdgeQL7HU3NE= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([52.197.165.36]) by mail.gmx.com (mrgmx005 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MYvcA-1hHydG1X84-00UqkM; Fri, 03 May 2019 09:34:35 +0200 Subject: Re: Rough (re)start with btrfs To: Hendrik Friedel , Chris Murphy , Btrfs BTRFS References: From: Qu Wenruo Openpgp: preference=signencrypt Autocrypt: addr=quwenruo.btrfs@gmx.com; prefer-encrypt=mutual; keydata= mQENBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAG0IlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT6JAVQEEwEIAD4CGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCWdWCnQUJCWYC bgAKCRDCPZHzoSX+qAR8B/94VAsSNygx1C6dhb1u1Wp1Jr/lfO7QIOK/nf1PF0VpYjTQ2au8 ihf/RApTna31sVjBx3jzlmpy+lDoPdXwbI3Czx1PwDbdhAAjdRbvBmwM6cUWyqD+zjVm4RTG rFTPi3E7828YJ71Vpda2qghOYdnC45xCcjmHh8FwReLzsV2A6FtXsvd87bq6Iw2axOHVUax2 FGSbardMsHrya1dC2jF2R6n0uxaIc1bWGweYsq0LXvLcvjWH+zDgzYCUB0cfb+6Ib/ipSCYp 3i8BevMsTs62MOBmKz7til6Zdz0kkqDdSNOq8LgWGLOwUTqBh71+lqN2XBpTDu1eLZaNbxSI ilaVuQENBFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcga CbPEwhLj1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj /IrRUUka68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fN GSsRb+pKEKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0 q1eW4Jrv0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEv ABEBAAGJATwEGAEIACYWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCWdWBrwIbDAUJA8JnAAAK CRDCPZHzoSX+qA3xB/4zS8zYh3Cbm3FllKz7+RKBw/ETBibFSKedQkbJzRlZhBc+XRwF61mi f0SXSdqKMbM1a98fEg8H5kV6GTo62BzvynVrf/FyT+zWbIVEuuZttMk2gWLIvbmWNyrQnzPl mnjK4AEvZGIt1pk+3+N/CMEfAZH5Aqnp0PaoytRZ/1vtMXNgMxlfNnb96giC3KMR6U0E+siA 4V7biIoyNoaN33t8m5FwEwd2FQDG9dAXWhG13zcm9gnk63BN3wyCQR+X5+jsfBaS4dvNzvQv h8Uq/YGjCoV1ofKYh3WKMY8avjq25nlrhzD/Nto9jHp8niwr21K//pXVA81R2qaXqGbql+zo Message-ID: <655d52b8-596a-2142-9470-8e45d5a0cc8e@gmx.com> Date: Fri, 3 May 2019 15:34:21 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="gUYdZIIm3oEGfEKqq2UiMoEsOZZVtdKxx" X-Provags-ID: V03:K1:wQu2+9TuwbxNKypRqDrhZZLibSPOANkV02yIyxL5ZmLTheSoxcA ZJn7okXGMQOvtafgUQ4BEMtRaFn3vqs2HAdlMIMXmKStTR2MXF1RjO/qei8XcCYZYG+51gD CtbgPEfU21cEGvYkV0jnN49s+1e/rBj0EJ2siSPui3WAfEaXDVxeup/VSwPnITqBKEUq7tm 6l4sX7xxNJDFP1stkAKDQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:dLLv1P58pW8=:gQM8nd6NG/zp491LkDjJXL 3lELE3VCYLPTxiWkeRR70wuB9OsUdlWbzdCEl89nNHaiWQzMbJNlQYkLBFgcFY3CxmkSIAwmC Qlz0JVjT1xz0coTWqu7LMLVJJQgIPuQVhZWIVUoT0LJzlrcpHWfIOule19YuQAUqLmU9FbYI4 qqRSrSHhToHDhidZ9TXOcRIUs2zcRo5yRf3/A8+dBvTF1wNnY3BsfToGBiQrCtn9wIR8TMZhn ZfXp6Da9LZxCJtWcD8iDLdqrNwA7hb8fz+s3+urrDTJ9Rk8F2eW86c4/g3lhsUj87uke7Z8gX htGoFYkMDBLXiR5q9sYFbXY3hmHnJYrJJ8+OeAm8EYiy+1I1JoUVERQeEojzFB7YjrLciXxAW n0hqvj//kWCay/KwBIIZCnw0B18hq68h/pdoAOIYnbkUN+mcbzaptk7nSet9gQivsjgsIdKCu rb3SmKW+qmr3BFyVLJCfo2q4AFo7JnW1tGeyc5I63jixcEEPWUktiH7oOQZ9f+svOVIo3cFNa uukTCOVoFclfpTDezzbwNrqJ1yRJfCzO7amz5ImAlQhzF9CbF11on+pt4PKpZYYh/9V+mbK2G ti++9Lv90Sj4oZWPeUgWvmQS6qQJgDcn46tYhV7eHITCbGPE0h1+APJEsGPBBhcic6mENp3HC NDe6I34oyIpY/0WokqUbA5RW6ri+GN9nuDF8Ksyb4lvM6uNAwn5EEk1pQZrN+TfHiw0DFQgdg 42hMkO5oa3PqWYAs0hhQrvZafix/AvKqaKKwyHVvdz/PnSnK9ro8Gm5AnUPBAqbae2kpLjL19 zvNLiU4prSdjqHvcyH3j2zFeg5hSNEkd+N1IPW4MvQm7qqwjnR7PrdhF0Tpcyc0nsL6JXnuJs 9DqIiy2ALOCLYxvyt1Tr9+vbPtBfUCGhd0EHfNXhdbTDg8yb7j0e0gJoubvq4z Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --gUYdZIIm3oEGfEKqq2UiMoEsOZZVtdKxx Content-Type: multipart/mixed; boundary="NLBI0fHxupG2Fj0oU6m2FpFKsfJUY1wPN"; protected-headers="v1" From: Qu Wenruo To: Hendrik Friedel , Chris Murphy , Btrfs BTRFS Message-ID: <655d52b8-596a-2142-9470-8e45d5a0cc8e@gmx.com> Subject: Re: Rough (re)start with btrfs References: In-Reply-To: --NLBI0fHxupG2Fj0oU6m2FpFKsfJUY1wPN Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2019/5/3 =E4=B8=8B=E5=8D=881:41, Hendrik Friedel wrote: > Hello, >=20 > -by the way: I think my mail did not appear in the list, but only > reached Chris and Qu directly. I just tried to re-send it. Could this b= e > caused by > 1) me not a subscriber of the list > 2) combined with me sending attachments > I did *not* get any error message by the server. >=20 >>> =C2=A0I was tempted to ask, whether this should be fixed. On the othe= r >>> hand, I >>> =C2=A0am not even sure anything bad happened (except, well, the syste= m -at >>> =C2=A0least the copy- seemed to hang). >> >> Definitely needs to be fixed. >> >> With full dmesg, it's now clear that is a real dead lock. >> Something wrong with the free space cache, blocking the whole fs to be= >> committed. >> > So, what's the next step? Shall I open a bug report somewhere, or is it= > already on some list? Not sure if other is looking into this. Btrfs bug tracking is somewhat tricky. Some prefer bug report in mail list directly like me, some prefer kernel bugzilla. >=20 >> If you still want to try btrfs, you could try "nosapce_cache" mount >> option. >> Free space cache of btrfs is just an optimization, you can completely >> ignore that with minor performance drop. >> > I will try that, yes. > Can you confirm, that it is unlikely, that I lost any data / damaged th= e > Filesystem? You lost nothing except the new data which is going be committed in the blocked transaction. Thanks, Qu >=20 > Regards, > Hendrik >=20 --NLBI0fHxupG2Fj0oU6m2FpFKsfJUY1wPN-- --gUYdZIIm3oEGfEKqq2UiMoEsOZZVtdKxx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAlzL7v0ACgkQwj2R86El /qhypQgAkogbQv7Hfz1p6L7pKZQEHObIrXBfu0oqr4Rbw+VKDjaJ4jYXK1AQxgHF J7v41Wyet+F8Q/t4Hhaquf4lRCB31dHO0dg6OVOxqAbdV7D8PWr2yQwbnOKlF5sO 8KLDRiRDN/jZa4btoOut6FSdS+A+68AhMqTrW2JGxzLEgClMt0bWjKOWyui6lv5H PMIco4gsA2QR+Ug7YRoQpOwFdWh+8zuw22IKLT6NsefirwgibnzuOb6v4JJDzRiK YNJjCJxmaB36+jeoQjYPShYiKi72Y4QuFvp/VlNNPT2c/3p6GxyvP2knhv94TRMd T9MoQHROVwuOCAr67bruiojlxcKmfg== =AUpJ -----END PGP SIGNATURE----- --gUYdZIIm3oEGfEKqq2UiMoEsOZZVtdKxx--