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=-0.5 required=3.0 tests=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 5E008C65C30 for ; Sun, 7 Oct 2018 09:47:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 191C120882 for ; Sun, 7 Oct 2018 09:47:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 191C120882 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gmx.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-btrfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726445AbeJGQy2 (ORCPT ); Sun, 7 Oct 2018 12:54:28 -0400 Received: from mout.gmx.net ([212.227.15.19]:55883 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725994AbeJGQy1 (ORCPT ); Sun, 7 Oct 2018 12:54:27 -0400 Received: from [0.0.0.0] ([210.140.77.29]) by mail.gmx.com (mrgmx002 [212.227.17.184]) with ESMTPSA (Nemesis) id 0MaZWz-1gO9hc0WS1-00K6uf; Sun, 07 Oct 2018 11:47:42 +0200 Received: from [0.0.0.0] ([210.140.77.29]) by mail.gmx.com (mrgmx002 [212.227.17.184]) with ESMTPSA (Nemesis) id 0MaZWz-1gO9hc0WS1-00K6uf; Sun, 07 Oct 2018 11:47:42 +0200 Subject: Re: Two partitionless BTRFS drives no longer seen as containing BTRFS filesystem To: evan d Cc: linux-btrfs@vger.kernel.org References: <54132790-3f56-ef0f-d818-4f62f0b0a608@gmx.com> <64cd61fe-5e78-6201-f4b2-e88efba139bc@gmx.com> <2122b08c-0fa9-b774-cbad-67b71f5084d4@gmx.com> <14c82713-72c8-a243-293b-5c482031f70a@gmx.com> From: Qu Wenruo Openpgp: preference=signencrypt Autocrypt: addr=quwenruo.btrfs@gmx.com; prefer-encrypt=mutual; keydata= xsBNBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAHNIlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT7CwJQEEwEIAD4CGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCWdWCnQUJCWYC bgAKCRDCPZHzoSX+qAR8B/94VAsSNygx1C6dhb1u1Wp1Jr/lfO7QIOK/nf1PF0VpYjTQ2au8 ihf/RApTna31sVjBx3jzlmpy+lDoPdXwbI3Czx1PwDbdhAAjdRbvBmwM6cUWyqD+zjVm4RTG rFTPi3E7828YJ71Vpda2qghOYdnC45xCcjmHh8FwReLzsV2A6FtXsvd87bq6Iw2axOHVUax2 FGSbardMsHrya1dC2jF2R6n0uxaIc1bWGweYsq0LXvLcvjWH+zDgzYCUB0cfb+6Ib/ipSCYp 3i8BevMsTs62MOBmKz7til6Zdz0kkqDdSNOq8LgWGLOwUTqBh71+lqN2XBpTDu1eLZaNbxSI ilaVzsBNBFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcga CbPEwhLj1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj /IrRUUka68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fN GSsRb+pKEKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0 q1eW4Jrv0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEv ABEBAAHCwHwEGAEIACYWIQQt33LlpaVbqJ2qQuHCPZHzoSX+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: <7ffc25c7-1442-99da-8600-add6b3ce2dd4@gmx.com> Date: Sun, 7 Oct 2018 17:47:37 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="gXrAiahfd8zkok7WAhzeNFd9Bg7dAPjYp" X-Provags-ID: V03:K1:A3lpSNzTcbb0kXG/t5ZSIkXpB8xoy9yqpo2nSDyWrh/xyHgeR97 J8Su6gm5DKdkGSReVg3P4e3PktgNEU3PwZLSkUW/1ONYSAOkYQgqkWMFFDu5qBZC8xV0OOB Iy5FsQ0KUSwa1+E8xtS125h9CIsGEDsxJGKuRWh0ZT8cocBSPoJqVMIp8yKejRtKTYXd15w 13LyDqJ0yclw2PhZLzvYA== X-UI-Out-Filterresults: notjunk:1;V01:K0:JJxOORmm7kw=:sHgncek4fVvodcOMFHlQl3 T/dd47S8iR+nbtX3bFLuYetu9yOu18G/voU++cbdiKdvLQXfc0kSVULt3allmp8qBDCksYIX2 Bbw9FrGVWuwA973CeBpeMB3js4sBcv6DR31G+3Nx26+qhnK1LdQdxVMMxlHbiM4hBYicLnRaf dvH+3TIL8Xp2/C6Y/iVU3Bz27pqCCfiKpzH+1aIquc9qTJqXf3Rip9gpChbI3Too0GprDDuc1 86ypFl4ioJUAp1C7YIVcyzqzslQFX4qtgVueDbX7veCjw0FM19UGFEkzRxJ03dk4XSx8XZRRl sUXKh4X3XzcuFlFETxVbbWJq1JdLdjKiOdVhOp+EtdVtACdSVEwMJ9POG1otNKLiviM5iWhDu X3Y+o/RTMY0rpm7oymiBZ84/6D7Dfyi25Qm96758kK5AtmOKX1Wx89sg+241hYN2dmVwLqKbQ H1rixHW2AYRqS0PFkbLfFwcVHjrU41uADPwjAd9V4ALhNs+8F9vF1nuhziR7B5J06Va/FL0Xd Ll4KKrpR7LUdTjWLP1TYksOKvVFBVhfuxymSGsdSxWL4FXl8Ulb13UfWsTvrOzENY6lWXXu9T GmcGLD2iSQ+862N60q1nB1VfLpz3lPoVxoga1QclT3Oiw4cs+rrFvaGc9wuNgDHqdZrhZ7e0i WMncGFaR0rRtEnlkiT8zCsZlukZiSEbqRp83es0k3TT0BAuTgCb8IqimDViIphKtJziRREISe NT7bcYNBwLsIHgPjdNlgHDkgE2870XULFadw/zoq4dFKMaUR84cFWq9Dt1jeTam+smPE8CXmm lCixblhvq5rMq3MaBz/RSRpxjwRBw== 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) --gXrAiahfd8zkok7WAhzeNFd9Bg7dAPjYp Content-Type: multipart/mixed; boundary="6szFh5CB84XMdJC4dDgo8PooFbVcXRd4i"; protected-headers="v1" From: Qu Wenruo To: evan d Cc: linux-btrfs@vger.kernel.org Message-ID: <7ffc25c7-1442-99da-8600-add6b3ce2dd4@gmx.com> Subject: Re: Two partitionless BTRFS drives no longer seen as containing BTRFS filesystem References: <54132790-3f56-ef0f-d818-4f62f0b0a608@gmx.com> <64cd61fe-5e78-6201-f4b2-e88efba139bc@gmx.com> <2122b08c-0fa9-b774-cbad-67b71f5084d4@gmx.com> <14c82713-72c8-a243-293b-5c482031f70a@gmx.com> In-Reply-To: --6szFh5CB84XMdJC4dDgo8PooFbVcXRd4i Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2018/10/7 =E4=B8=8B=E5=8D=884:28, evan d wrote: >>>> # dd if=3D/dev/sdb bs=3D1M of=3Dlast_chance.raw count=3D128 skip=3D2= 56M >>>> # grep -obUaP "\x5F\x42\x48\x52\x66\x53\x5F\x4D" last_chance.raw >=20 > grep returns no result on either drive >=20 >>>>> If still no hit, you could try just run the grep command on the dis= k. >=20 > like so?: > grep -obUaP "\x5F\x42\x48\x52\x66\x53\x5F\x4D" /dev/sdc >=20 Yes. And it will be very slow, since you're going to read out the whole disk. But I don't really think you would get some hit, according to current result. Thanks, Qu --6szFh5CB84XMdJC4dDgo8PooFbVcXRd4i-- --gXrAiahfd8zkok7WAhzeNFd9Bg7dAPjYp Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAlu51jkACgkQwj2R86El /qgGzgf+PYXvXdVMSiYO7ChH6byFTOnCzp2Csg81SIxxj2OhmXrYz05RP7cERN/m 7mNyptYauUYZ+lLYfGjfU6R5FzW8qggLrjW+z7+uD0QQwhsdOeRTnBeAneSJRyki wZEjv4eksUeuGMfwyYmGng84XnEV9DMXuEFH30tG1vN0wFGiSR4bFYoZPF5LdVlr +53vD5w0fZLtmDRMYQdTNAFRmmlMuwiKeocM65eaa3PCDYKGWdjHD377gySTGI61 JzIgFu+xRAPKqoAjtQaeCBbHVdyROld04BLbvOWzHcFFs5H0tr/u5M1a/Y4s2EkZ BrqIzMsmNL1hOTVOP2tw/hjhohjuMQ== =NYpO -----END PGP SIGNATURE----- --gXrAiahfd8zkok7WAhzeNFd9Bg7dAPjYp--