From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f171.google.com ([209.85.213.171]:34373 "EHLO mail-ig0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750761AbbJEQBx (ORCPT ); Mon, 5 Oct 2015 12:01:53 -0400 Received: by igcpb10 with SMTP id pb10so66310918igc.1 for ; Mon, 05 Oct 2015 09:01:52 -0700 (PDT) Subject: Re: Issues with unmountable BTRFS raid1 filesystem To: Hugo Mills , linux-btrfs References: <56126D59.7070505@gmail.com> <20151005131426.GP25907@carfax.org.uk> <561286F2.40607@gmail.com> From: Austin S Hemmelgarn Message-ID: <56129EE0.6060709@gmail.com> Date: Mon, 5 Oct 2015 12:01:36 -0400 MIME-Version: 1.0 In-Reply-To: <561286F2.40607@gmail.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms000100000401030109080500" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is a cryptographically signed message in MIME format. --------------ms000100000401030109080500 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable On 2015-10-05 10:19, Austin S Hemmelgarn wrote: > On 2015-10-05 09:14, Hugo Mills wrote: >> On Mon, Oct 05, 2015 at 08:30:17AM -0400, Austin S Hemmelgarn wrote: >>> I've been having issues recently with a relatively simple setup >>> using a two device BTRFS raid1 on top of two two device md RAID0's, >>> and every time I've rebooted since starting trying to use this >>> particular filesystem, I've found it unable to mount and had to >>> recreate it from scratch. This is more of an inconvenience than >>> anything else (while I don't have backups of it, all the data is >>> trivial to recreate (in fact, so trivial that doing backups would be >>> more effort than just recreating the data by hand)), but it's still >>> something that I would like to try and fix. >>> >>> First off, general info: >>> Kernel version: 4.2.1-local+ (4.2.1 with minor modifications, >>> sources can be found here: https://github.com/ferroin/linux) >>> Btrfs-progs version: 4.2 >>> >>> I would post output from btrfs fi show, but that's spouting >>> obviously wrong data (it's saying I'm using only 127MB with 2GB of >>> allocations on each 'disk', I had been storing approximately 4-6GB >>> of actual data on the filesystem). >>> >>> This particular filesystem is composed of BTRFS raid1 across two LVM >>> managed DM/MD RAID0 devices, each of which spans 2 physical hard >>> drives. I have a couple of other filesystems with the exact same >>> configuration that have not ever displayed this issue. >>> >>> When I run 'btrfs check' on the filesystem when it refuses to mount, >>> I get a number of lines like the following: >>> bad metadata [, ) crossing stripe boundary >>> >>> followed eventually by: >>> Errors found in extent allocation tree or chunk allocation >> >> I _think_ this is a bug in mkfs from 4.2.0, fixed in later >> releases of the btrfs-progs. > If so, that's good news (that is, that it's just a mkfs bug). I guess > it's time for me to quit waiting around for Gentoo to package the newes= t > version and build it myself. It looks like it was indeed a bug in mkfs from 4.2.0, I upgraded to the=20 development branch and everything seems to be working correctly now.=20 Thanks for the help! --------------ms000100000401030109080500 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCC Brgwgga0MIIEnKADAgECAgMRLfgwDQYJKoZIhvcNAQENBQAweTEQMA4GA1UEChMHUm9vdCBD QTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNp Z25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcwHhcN MTUwOTIxMTEzNTEzWhcNMTYwMzE5MTEzNTEzWjBjMRgwFgYDVQQDEw9DQWNlcnQgV29UIFVz ZXIxIzAhBgkqhkiG9w0BCQEWFGFoZmVycm9pbjdAZ21haWwuY29tMSIwIAYJKoZIhvcNAQkB FhNhaGVtbWVsZ0BvaGlvZ3QuY29tMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA nQ/81tq0QBQi5w316VsVNfjg6kVVIMx760TuwA1MUaNQgQ3NyUl+UyFtjhpkNwwChjgAqfGd LIMTHAdObcwGfzO5uI2o1a8MHVQna8FRsU3QGouysIOGQlX8jFYXMKPEdnlt0GoQcd+BtESr pivbGWUEkPs1CwM6WOrs+09bAJP3qzKIr0VxervFrzrC5Dg9Rf18r9WXHElBuWHg4GYHNJ2V Ab8iKc10h44FnqxZK8RDN8ts/xX93i9bIBmHnFfyNRfiOUtNVeynJbf6kVtdHP+CRBkXCNRZ qyQT7gbTGD24P92PS2UTmDfplSBcWcTn65o3xWfesbf02jF6PL3BCrVnDRI4RgYxG3zFBJuG qvMoEODLhHKSXPAyQhwZINigZNdw5G1NqjXqUw+lIqdQvoPijK9J3eijiakh9u2bjWOMaleI SMRR6XsdM2O5qun1dqOrCgRkM0XSNtBQ2JjY7CycIx+qifJWsRaYWZz0aQU4ZrtAI7gVhO9h pyNaAGjvm7PdjEBiXq57e4QcgpwzvNlv8pG1c/hnt0msfDWNJtl3b6elhQ2Pz4w/QnWifZ8E BrFEmjeeJa2dqjE3giPVWrsH+lOvQQONsYJOuVb8b0zao4vrWeGmW2q2e3pdv0Axzm/60cJQ haZUv8+JdX9ZzqxOm5w5eUQSclt84u+D+hsCAwEAAaOCAVkwggFVMAwGA1UdEwEB/wQCMAAw VgYJYIZIAYb4QgENBEkWR1RvIGdldCB5b3VyIG93biBjZXJ0aWZpY2F0ZSBmb3IgRlJFRSBo ZWFkIG92ZXIgdG8gaHR0cDovL3d3dy5DQWNlcnQub3JnMA4GA1UdDwEB/wQEAwIDqDBABgNV HSUEOTA3BggrBgEFBQcDBAYIKwYBBQUHAwIGCisGAQQBgjcKAwQGCisGAQQBgjcKAwMGCWCG SAGG+EIEATAyBggrBgEFBQcBAQQmMCQwIgYIKwYBBQUHMAGGFmh0dHA6Ly9vY3NwLmNhY2Vy dC5vcmcwMQYDVR0fBCowKDAmoCSgIoYgaHR0cDovL2NybC5jYWNlcnQub3JnL3Jldm9rZS5j cmwwNAYDVR0RBC0wK4EUYWhmZXJyb2luN0BnbWFpbC5jb22BE2FoZW1tZWxnQG9oaW9ndC5j b20wDQYJKoZIhvcNAQENBQADggIBADMnxtSLiIunh/TQcjnRdf63yf2D8jMtYUm4yDoCF++J jCXbPQBGrpCEHztlNSGIkF3PH7ohKZvlqF4XePWxpY9dkr/pNyCF1PRkwxUURqvuHXbu8Lwn 8D3U2HeOEU3KmrfEo65DcbanJCMTTW7+mU9lZICPP7ZA9/zB+L0Gm1UNFZ6AU50N/86vjQfY WgkCd6dZD4rQ5y8L+d/lRbJW7ZGEQw1bSFVTRpkxxDTOwXH4/GpQfnfqTAtQuJ1CsKT12e+H NSD/RUWGTr289dA3P4nunBlz7qfvKamxPymHeBEUcuICKkL9/OZrnuYnGROFwcdvfjGE5iLB kjp/ttrY4aaVW5EsLASNgiRmA6mbgEAMlw3RwVx0sVelbiIAJg9Twzk4Ct6U9uBKiJ8S0sS2 8RCSyTmCRhJs0vvva5W9QUFGmp5kyFQEoSfBRJlbZfGX2ehI2Hi3U2/PMUm2ONuQG1E+a0AP u7I0NJc/Xil7rqR0gdbfkbWp0a+8dAvaM6J00aIcNo+HkcQkUgtfrw+C2Oyl3q8IjivGXZqT 5UdGUb2KujLjqjG91Dun3/RJ/qgQlotH7WkVBs7YJVTCxfkdN36rToPcnMYOI30FWa0Q06gn F6gUv9/mo6riv3A5bem/BdbgaJoPnWQD9D8wSyci9G4LKC+HQAMdLmGoeZfpJzKHMYIE0TCC BM0CAQEwgYAweTEQMA4GA1UEChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNl cnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcN AQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxEt+DANBglghkgBZQMEAgMFAKCCAiEwGAYJKoZI hvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUxMDA1MTYwMTM2WjBPBgkq hkiG9w0BCQQxQgRAMj9vM+IiVxhjksbs8tH5FJrv/UHdBs1uks2JNQYZqMEY0PF3jUwMxF4z 7w/grVisyB+4Kr3RzCAb5Va29/k6sTBsBgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFlAwQBKjAL BglghkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFA MAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEoMIGRBgkrBgEEAYI3EAQxgYMwgYAweTEQMA4GA1UE ChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlD QSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy dC5vcmcCAxEt+DCBkwYLKoZIhvcNAQkQAgsxgYOggYAweTEQMA4GA1UEChMHUm9vdCBDQTEe MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25p bmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxEt+DAN BgkqhkiG9w0BAQEFAASCAgApsA+/nYLQr17xNYWOICcwYrIGBj5+NpFOD/DKVK9yjvEf+OQ7 9jeqtCjVcy1dyRidfVaEGTMcxuZPltZ95YrbB4wmYdTbIXYzdBsN752SJgIXC7UiUIOFUVH1 ZPNpebVkb1PwWvSY98i82AMqz1VltVBD3aA0fccsmUQkSKaiD0EqJeYKfLdz4hnUmBX78zjI vqzKWBsVW0hoNIvVXLdobt+tYDkWhAMKcP2ClJT0ak0ChQUBNsodqePBCow2ri0ZSLkgBMU/ f0Yod07jloXP4WmKlNrnNoerPDGCZH3u9aig3l1bMJnclGwyhnspVO2vLkM1K4HtPS/dHPtN 1wLblLrEuycO0DA6hmF6hp62q3te08qMI544ZnH6F3Ap3nanVh7kgB6SMhCZLqggMR8g/DgY qhjTc3hsWcG+dcESVcO07P0V1P46zvzoAy5dRt+cV+iSAsWdDsw030igXtUJnPy8Ltz9Ke50 ITimoTPcktK8udb9QbtR+009awIf1Kk9wpDZ4RZgpLnD3HG++lOatjoL0yu82/n45qjPBuzo ozMSlW+EOcGFNXLEKih0ZULFMKgVOd23G/o219EbH2IHqwrTRrLLGmTzrLVBCBDpNvCyUTKt YVBzYCyjmiUw5QIxbfDNTL4pmv8pGuDmCV/9x8ODHl96yfT38Gx3NdzdSwAAAAAAAA== --------------ms000100000401030109080500--