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([2a00:1370:812d:ecb3:590f:aaab:50ba:573b]) by smtp.gmail.com with ESMTPSA id 126sm1784920lfm.203.2021.01.17.21.49.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 17 Jan 2021 21:49:19 -0800 (PST) Subject: Re: received uuid not set btrfs send/receive To: Anders Halman , linux-btrfs@vger.kernel.org References: <95f9479d-2217-768e-f866-ae42509c3b2c@gmail.com> From: Andrei Borzenkov Autocrypt: addr=arvidjaar@gmail.com; prefer-encrypt=mutual; keydata= mQGiBDxiRwwRBAC3CN9wdwpVEqUGmSoqF8tWVIT4P/bLCSZLkinSZ2drsblKpdG7x+guxwts +LgI8qjf/q5Lah1TwOqzDvjHYJ1wbBauxZ03nDzSLUhD4Ms1IsqlIwyTLumQs4vcQdvLxjFs G70aDglgUSBogtaIEsiYZXl4X0j3L9fVstuz4/wXtwCg1cN/yv/eBC0tkcM1nsJXQrC5Ay8D /1aA5qPticLBpmEBxqkf0EMHuzyrFlqVw1tUjZ+Ep2LMlem8malPvfdZKEZ71W1a/XbRn8FE SOp0tUa5GwdoDXgEp1CJUn+WLurR0KPDf01E4j/PHHAoABgrqcOTcIVoNpv2gNiBySVsNGzF XTeY/Yd6vQclkqjBYONGN3r9R8bWA/0Y1j4XK61qjowRk3Iy8sBggM3PmmNRUJYgroerpcAr 2byz6wTsb3U7OzUZ1Llgisk5Qum0RN77m3I37FXlIhCmSEY7KZVzGNW3blugLHcfw/HuCB7R 1w5qiLWKK6eCQHL+BZwiU8hX3dtTq9d7WhRW5nsVPEaPqudQfMSi/Ux1kbQmQW5kcmV5IEJv cnplbmtvdiA8YXJ2aWRqYWFyQGdtYWlsLmNvbT6IYAQTEQIAIAUCSXs6NQIbAwYLCQgHAwIE FQIIAwQWAgMBAh4BAheAAAoJEEeizLraXfeMLOYAnj4ovpka+mXNzImeYCd5LqW5to8FAJ4v P4IW+Ic7eYXxCLM7/zm9YMUVbrQmQW5kcmVpIEJvcnplbmtvdiA8YXJ2aWRqYWFyQGdtYWls LmNvbT6IZQQTEQIAJQIbAwYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AFAliWAiQCGQEACgkQ R6LMutpd94wFGwCeNuQnMDxve/Fo3EvYIkAOn+zE21cAnRCQTXd1hTgcRHfpArEd/Rcb5+Sc uQENBDxiRyQQBACQtME33UHfFOCApLki4kLFrIw15A5asua10jm5It+hxzI9jDR9/bNEKDTK SciHnM7aRUggLwTt+6CXkMy8an+tVqGL/MvDc4/RKKlZxj39xP7wVXdt8y1ciY4ZqqZf3tmm SN9DlLcZJIOT82DaJZuvr7UJ7rLzBFbAUh4yRKaNnwADBwQAjNvMr/KBcGsV/UvxZSm/mdpv UPtcw9qmbxCrqFQoB6TmoZ7F6wp/rL3TkQ5UElPRgsG12+Dk9GgRhnnxTHCFgN1qTiZNX4YI FpNrd0au3W/Xko79L0c4/49ten5OrFI/psx53fhYvLYfkJnc62h8hiNeM6kqYa/x0BEddu92 ZG6IRgQYEQIABgUCPGJHJAAKCRBHosy62l33jMhdAJ48P7WDvKLQQ5MKnn2D/TI337uA/gCg n5mnvm4SBctbhaSBgckRmgSxfwQ= Message-ID: <688feaf7-23f1-c19b-8911-ce1069f6a56a@gmail.com> Date: Mon, 18 Jan 2021 08:49:18 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <95f9479d-2217-768e-f866-ae42509c3b2c@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org 17.01.2021 21:49, Anders Halman пишет: > Hello, > > I try to backup my laptop over an unreliable slow internet connection to > a even slower Raspberry Pi. > > To bootstrap the backup I used the following: > > # local > btrfs send root.send.ro | pigz | split --verbose -d -b 1G > rsync -aHAXxv --numeric-ids --partial --progress -e "ssh -T -o > Compression=no -x" x* remote-host:/mnt/backup/btrfs-backup/ > > # remote > cat x* > split.gz > pigz -d split.gz > btrfs receive -f split > This command is missing argument. > worked nicely. It is impossible, you did not tell "btrfs receive" where to store incoming data. bor@bor-Latitude-E5450:~/src/btrfs-progs$ btrfs receive btrfs receive: exactly 1 argument expected, 0 given > But I don't understand why the "received uuid" on the > remote site in blank. Where is it blank? Show commands you used to check it. > I tried it locally with smaller volumes and it worked. > > The 'split' file contains the correct uuid, but it is not set (remote). > > remote$ btrfs receive --dump -f split | head > subvol          ./root.send.ro uuid=99a34963-3506-7e4c-a82d-93e337191684 > transid=1232187 > > local$ sudo btrfs sub show root.send.ro| grep -i uuid: >     UUID:             99a34963-3506-7e4c-a82d-93e337191684 > > > Questions: > > - Is there a way to set the "received uuid"? > - Is it a matter of btrfs-progs version difference? > - What whould be a better approach? > > > Thank you > > > ---- > > # local > > root@fos ~$ uname -a > Linux fos 5.9.16-200.fc33.x86_64 #1 SMP Mon Dec 21 14:08:22 UTC 2020 > x86_64 x86_64 x86_64 GNU/Linux > > root@fos ~$   btrfs --version > btrfs-progs v5.9 > > root@fos ~$   btrfs fi show > Label: 'DATA'  uuid: b6e675b3-84e3-4869-b858-218c5f0ac5ad >     Total devices 1 FS bytes used 402.17GiB >     devid    1 size 464.27GiB used 414.06GiB path > /dev/mapper/luks-e4e69cfa-faae-4af8-93f5-7b21b25ab4e6 > > root@fos ~$   btrfs fi df /btrfs-root/ > Data, single: total=404.00GiB, used=397.80GiB > System, DUP: total=32.00MiB, used=64.00KiB > Metadata, DUP: total=5.00GiB, used=4.38GiB > GlobalReserve, single: total=512.00MiB, used=0.00B > > > # remote > root@pih:~# uname -a > Linux pih 5.4.72+ #1356 Thu Oct 22 13:56:00 BST 2020 armv6l GNU/Linux > > root@pih:~#   btrfs --version > btrfs-progs v4.20.1 > > root@pih:~#   btrfs fi show > Label: 'DATA'  uuid: 6be1e09c-d1a5-469d-932b-a8d1c339afae >     Total devices 1 FS bytes used 377.57GiB >     devid    2 size 931.51GiB used 383.06GiB path > /dev/mapper/luks_open_backup0 > > root@pih:~#   btrfs fi df /mnt/backup > Data, single: total=375.00GiB, used=374.25GiB > System, DUP: total=32.00MiB, used=64.00KiB > Metadata, DUP: total=4.00GiB, used=3.32GiB > GlobalReserve, single: total=512.00MiB, used=0.00B > > > dmesg is empty for the time of import/btrfs receive.