From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f182.google.com ([209.85.223.182]:36777 "EHLO mail-io0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756531AbbJHL1J (ORCPT ); Thu, 8 Oct 2015 07:27:09 -0400 Received: by ioii196 with SMTP id i196so53828691ioi.3 for ; Thu, 08 Oct 2015 04:27:09 -0700 (PDT) Subject: Re: Using BtrFS and backup tools for keeping two systems in sync To: Shriramana Sharma , linux-btrfs References: From: Austin S Hemmelgarn Message-ID: <561652D3.1020606@gmail.com> Date: Thu, 8 Oct 2015 07:26:11 -0400 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms000200050601080808060300" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is a cryptographically signed message in MIME format. --------------ms000200050601080808060300 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 2015-10-07 22:35, Shriramana Sharma wrote: > Hello. I see there are some backup tools taking advantage of BtrFS's > incremental send/receive feature: > https://btrfs.wiki.kernel.org/index.php/Incremental_Backup. [BTW Ames > Cornish's ButterSink (https://github.com/AmesCornish/buttersink) seems > to be missing from that page.] > > Now I'd like to know if anyone has evolved some good practices w.r.t > maintaining the data of two systems in sync using this feature of > BtrFS. What I have in mind is: I work on my desktop by default, and > for ergonomics reasons only use my laptop when I need the mobility. > I'd like to keep the main data (documents I create, programs I write > etc) in sync between the two. (The profile data such as in the ~/.* > hidden folders had better stay separate though, I guess.) > > I figure with the existing tools it would not be too difficult to > maintain a synced set of snapshots between the two systems if I only > use the desktop vs laptop alternatingly and sync at each switchover, > but the potential problem only would come if I modify both (something > like having to do git merge, I guess). > > Has anyone come across this situation and evolved any policies to handl= e it? > Personally, while I use BTRFS on all of my systems, I usually use=20 Dropbox for synchronizing data between them. While the Linux client for = it isn't perfect, it is significantly easier than something like a=20 regularly scheduled rsync or btrfs send/receive. It's also kind of nice = because multiple clients bound to the same account will sync across the=20 local network without needing to talk to the servers if they can avoid=20 it. Of course, it costs money if you want a decent amount of storage=20 space, but it's pretty reasonable for the degree of reliability I've=20 observed. --------------ms000200050601080808060300 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 hvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUxMDA4MTEyNjExWjBPBgkq hkiG9w0BCQQxQgRAMMRQ9HmSq/9TkX9KNTxHR+jGSwfqO7o6x6K6vyr/jGKTNVSXQIsnB8Iz eGrO7zvl9Ah0jQszKl3i6OUaeDRyCTBsBgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFlAwQBKjAL BglghkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFA MAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEoMIGRBgkrBgEEAYI3EAQxgYMwgYAweTEQMA4GA1UE ChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlD QSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy dC5vcmcCAxEt+DCBkwYLKoZIhvcNAQkQAgsxgYOggYAweTEQMA4GA1UEChMHUm9vdCBDQTEe MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25p bmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxEt+DAN BgkqhkiG9w0BAQEFAASCAgCKD4ESGsPTYWNRGC9567YBTQotQZ3PCp3tQ2FlJamqViHAxvkn Pm4G1niIH+T4Y5s3pwihv0MisCWKUzjyzH05U5Mkl3Sr+oTAYu53+6lhHfmmVvGMcX4cdx1s GVL5dsrkSooBe7Qpj0xbuYu+y2M/EPdI23+i0vzLJR9XJo5kwo+g6MP6mSqnJmsb+OtGARCU x2Imaxnidylyinxo1q/Bp8+g2jIwvXBReDtEQaIsEqugnEaBqLaf3XQqzakyUjc6BNgzL875 C0sq74BDtmgCeyl44m9LCoKRO7lHjTFZuMJ8Gq1bopEkz7od6877idrMmyJGNpgsxusHhQSz TfNCP7vuyhtpSLlgzU3fSjJf/B+hM/xoO4rdB/QCP++n1ZEAaWa76NWFhzz4YJvIbMIug+ad KDY/r5h+xa7zPXnvYIuTLaEoa6yZ+tshfXOYAp9NXpHqjTiwu/oRMq4RAHb6en8cCcSdqHMP fTG7i4dlv9EJIe0OB21r/hmTvjo5e4E143NBZ0nH9aYZFvxd3+WDe39TtwYErUakSK1lF+w/ lddEAxtTL5lnEcGHBccoyTILMIOBLw2WZHggT1reUqTqDCnotuQ7H4qLCkVZumkcCz9yZEIi Dmkg67weHRKixT0Fr8iFgaJV6a5lZal+jPNB3iusNLvzXDbwKkTIhJ7FFwAAAAAAAA== --------------ms000200050601080808060300--