From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f174.google.com ([209.85.213.174]:37621 "EHLO mail-ig0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751812AbbHTLfs (ORCPT ); Thu, 20 Aug 2015 07:35:48 -0400 Received: by igui7 with SMTP id i7so28108487igu.0 for ; Thu, 20 Aug 2015 04:35:48 -0700 (PDT) Subject: Re: So, wipe it out and start over or keep debugging? To: Chris Murphy References: <55D1C8D3.5090501@gmail.com> <55D31533.4040409@gmail.com> Cc: Timothy Normand Miller , Btrfs BTRFS From: Austin S Hemmelgarn Message-ID: <55D5BB83.80203@gmail.com> Date: Thu, 20 Aug 2015 07:35:31 -0400 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms020301050708030101090500" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is a cryptographically signed message in MIME format. --------------ms020301050708030101090500 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 2015-08-18 17:09, Chris Murphy wrote: > On Tue, Aug 18, 2015 at 5:21 AM, Austin S Hemmelgarn > wrote: >> On 2015-08-17 14:52, Timothy Normand Miller wrote: >>> >>> I'm not sure if I'm doing this wrong. Here's what I'm seeing: >>> >>> # btrfs-image -c9 -t4 -w /mnt/btrfs ~/btrfs_dump.z >>> Superblock bytenr is larger than device size >>> Open ctree failed >>> create failed (No such file or directory) >> >> >> For the source, you need to specify the underlying block device, not t= he top >> of the mounted filesystem. It's trying to read the directory as a blo= ck >> device and getting very confused. We should probably add some kind of= check >> to btrfs-image to warn about that. > > Should it even be possible to use btrfs-image on a mounted volume? If > it's written to at all, the collected image is going to be > inconsistent. > In theory, it might be useful, but we would need to slap a big obnoxious = warning on such functionality. I don't think it's possible right now,=20 and as such we should do something to account for the possibility of=20 someone trying it. --------------ms020301050708030101090500 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 Brgwgga0MIIEnKADAgECAgMQblUwDQYJKoZIhvcNAQENBQAweTEQMA4GA1UEChMHUm9vdCBD QTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNp Z25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcwHhcN MTUwMzI1MTkzNDM4WhcNMTUwOTIxMTkzNDM4WjBjMRgwFgYDVQQDEw9DQWNlcnQgV29UIFVz 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 b20wDQYJKoZIhvcNAQENBQADggIBABr5e8W+NiTER+Q/7wiA2LxWN3UdhT3eZJjqqSlP370P KL5iWqeTfxQ67Ai/mHbJcT2PgAJ+/D2Ji+aRR03UWnU/vtOwzyDLUMstqnfl0Zs+sz/CJe7x nBA5jlpjC2DKuMVfbPze7eySaen7XSGFHKE1QoVIIpQ2kVjC4nbbJQnUbAVX1Iz29WxeVGt9 XYigz3tDPf3tglN+q23E7YjQl4abTIoM7i98yV1H9gfY8lFfKZ6jREB9+n6ie2EwS3Kat2mG tl2wBx4MfRnoSQSKsLKQ5oTwhWf0JqlFwpLfl374p0Njcykej9/jnWG8Ks1V/AXTHqI4eyIP Mf5yMZkPv7n7LS9WWKdG4Nd38iv4T2EiAaWsmgu+r81qL5CJu9AyA0SBS4ttKf6k3e63w2Mv N9R45vpQ3QhAhfWyFxFhZN95APe3YECDG3+XIRJpRYPEtHuIsOyzI70ajF93gg/BidvqKsmV MM2ccktDMfqwZXea6zey7F8Geu9R7BqjXmG2HlNuXu7e/xnHOgXf5D3wPmnRLlBhXL1Ch97a w2KjaupjpAHfFjv5kGnZXN87UvvlwzIZiKXwa3vTDwK+rrKn/sHPkfDZPSiyt/ZBIK6lX83P 34H/CzGg+Kx57rHYOIHGumIvpDa5vfWp8O0sGgawb1C2Aae4sTUVIWmIjVuGI062MYIE0TCC BM0CAQEwgYAweTEQMA4GA1UEChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNl cnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcN AQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxBuVTANBglghkgBZQMEAgMFAKCCAiEwGAYJKoZI hvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUwODIwMTEzNTMxWjBPBgkq hkiG9w0BCQQxQgRAUx6tepU2aZQwewH/m2CoeLqTwQ8j4oIHZUZ2CM/wux42UpMQN2z2F2lN /aS7Agy6u/Bg2yThcSJtm9x8UZ8LBTBsBgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFlAwQBKjAL BglghkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFA MAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEoMIGRBgkrBgEEAYI3EAQxgYMwgYAweTEQMA4GA1UE ChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlD QSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy dC5vcmcCAxBuVTCBkwYLKoZIhvcNAQkQAgsxgYOggYAweTEQMA4GA1UEChMHUm9vdCBDQTEe MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25p bmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxBuVTAN BgkqhkiG9w0BAQEFAASCAgBBhOUCG6F0qRRvGI9j2r7ELyJT2uF+dJlUmk+RN4MXujIEHWO5 DOrjbYDq1FQTSIUPr20UmUtN4IfB/pgj7yZQl7gv6CyMei1rvL2gR0bN0tBH2aV6MTZswEbj c8LIWyqormqr7DQxvB4P6280+qnKwfVLcYCsFrQeM+VpNbGSd4ysNiPmlXzJGAKKazp37fOm zUZcxuv3+BRQvbbU/IU8TTs62qC+BaHgkJfKCRrShDZxuCS2pyIyvbARUMc36Xu5sorKgCoN 6S23ALTlJyGaE8gY0MsbR5BIGbdv4aHJVJQyV9hsED3GE5315go/JnkahBT3kAxDL5cridNU PF2A0icVqj7mq/vX9c+ftsFCm3RCN7YUDOVZuZWn+ewmpevgDzP8VmnFiSHe3++zOZ74NDs4 pqiM9+kfEOF/2Acp5rAM1BklQg0D30c/5jpF5DI0s/1o4yettx+OD0/Fe4ICsGgfzk15oeKK BgLs4AfQvC7LKLFDS8bdbS91sGZCtHrL0pnbwB10NZ+ppc2Dyp5USGu1ud9yfNqbTw8Czc/D FOppO3HOSI7/oH40ULTUs3EXH9m8BFVy/2ZZbJ60zUNuvWiP6C0Y5ngTjInwZ+hK2I2rwv0Q SNGtmbPZ/GHUBz0lF95DyC5jimGOAm80xG2jSXiR6EqdrBs5keAVTUpoVgAAAAAAAA== --------------ms020301050708030101090500--