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Mon, 17 Feb 2020 13:05:15 -0500 Received: by zaphod.cobb.me.uk (Postfix, from userid 107) id 8D7819C3AE; Mon, 17 Feb 2020 18:05:13 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cobb.uk.net; s=201703; t=1581962713; bh=RSrFtLYDm97qzF6z41Vo6tV3C2Am+SbON6R4Ugy9kpk=; h=Subject:To:References:From:Date:In-Reply-To:From; b=PtCi381NUOk2Jt2Ga7Oc1nsaJtXZ0/gnnvp6Ts+0BTsjVWBTeKEIcWtbTJwdKSZQX MEQOBFtdG1xPNJYD6tJZ5d4QTQKkT5DjN4RrizPBblIcxTIG/rQwQf+XT2gYhDIAC9 IcBzyPHow1z1qVILkMb8LldOKvY4PjIbbEiHfufHuNhXR0XziCP9BtP+PzzQvc/JwO ce/68VRzYw+XJjbWbuoQMp1ls9Hmeod9a+i4C1u+hAuSEN5Vh+n5ax/lUO95Xc1nsd vMeCFJIyymjehJWJjOvadYItCZe8abgFTD5JnEDSZmK7NWteHpbA1CkUe52NT+th8R ZMagkepvLFhIA== Received: from black.home.cobb.me.uk (unknown [192.168.0.205]) by zaphod.cobb.me.uk (Postfix) with ESMTP id BA3BB9B9B1; Mon, 17 Feb 2020 18:05:10 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cobb.uk.net; s=201703; t=1581962710; bh=RSrFtLYDm97qzF6z41Vo6tV3C2Am+SbON6R4Ugy9kpk=; h=Subject:To:References:From:Date:In-Reply-To:From; b=sB2+mCKk/+E+USFkl7I5oTsX1yMAJIdqn5FyFBgmddNBZIjbykdy8f47hzNvtKbOW nmLflqCjpjU1+9wolM4uFQxfP+auTW1ZQVqOItrJ+C6DxU6FzUJAnLA1ul8FYIYdI5 Jljx54IPUous21SQZ8T/oDZLMNNkEBuCFpvogcq+DHgDhIw2FZiKiCtgdrjyZVq/Vn BEAl0dKgTpQT/NqMCVews/QA2a3VObcKJM9M9hGB6Nvw2avn2E9sd3d5SMjAAV1HHy YXokxMf5gyaulYCHE/khEqDNkvcaccnmrdmi/NW+bWb3ioTgXEPx1dtQB/sif5Re11 UJWaDdyacaZ4A== Received: from [192.168.0.211] (novatech.home.cobb.me.uk [192.168.0.211]) by black.home.cobb.me.uk (Postfix) with ESMTPS id 6C1C6C62B0; Mon, 17 Feb 2020 18:05:10 +0000 (GMT) Subject: Re: btrfs: convert metadata from raid5 to raid1 To: Menion , linux-btrfs References: <641d8ba2-89c1-83ac-155f-f661f511218a@petaramesh.org> <20200217141708.GE1235@savella.carfax.org.uk> From: Graham Cobb Openpgp: preference=signencrypt Autocrypt: addr=g.btrfs@cobb.uk.net; prefer-encrypt=mutual; keydata= mQINBFaetnIBEAC5cHHbXztbmZhxDof6rYh/Dd5otxJXZ1p7cjE2GN9hCH7gQDOq5EJNqF9c VtD9rIywYT1i3qpHWyWo0BIwkWvr1TyFd3CioBe7qfo/8QoeA9nnXVZL2gcorI85a2GVRepb kbE22X059P1Z1Cy7c29dc8uDEzAucCILyfrNdZ/9jOTDN9wyyHo4GgPnf9lW3bKqF+t//TSh SOOis2+xt60y2In/ls29tD3G2ANcyoKF98JYsTypKJJiX07rK3yKTQbfqvKlc1CPWOuXE2x8 DdI3wiWlKKeOswdA2JFHJnkRjfrX9AKQm9Nk5JcX47rLxnWMEwlBJbu5NKIW5CUs/5UYqs5s 0c6UZ3lVwinFVDPC/RO8ixVwDBa+HspoSDz1nJyaRvTv6FBQeiMISeF/iRKnjSJGlx3AzyET ZP8bbLnSOiUbXP8q69i2epnhuap7jCcO38HA6qr+GSc7rpl042mZw2k0bojfv6o0DBsS/AWC DPFExfDI63On6lUKgf6E9vD3hvr+y7FfWdYWxauonYI8/i86KdWB8yaYMTNWM/+FAKfbKRCP dMOMnw7bTbUJMxN51GknnutQlB3aDTz4ze/OUAsAOvXEdlDYAj6JqFNdZW3k9v/QuQifTslR JkqVal4+I1SUxj8OJwQWOv/cAjCKJLr5g6UfUIH6rKVAWjEx+wARAQABtDNHcmFoYW0gQ29i YiAoUGVyc29uYWwgYWRkcmVzcykgPGdyYWhhbUBjb2JiLnVrLm5ldD6JAlEEEwECADsCGwEG CwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAhkBBQJWnr9UFRhoa3A6Ly9rZXlzLmdudXBnLm5l dAAKCRBv35GGXfm3Tte8D/45+/dnVdvzPsKgnrdoXpmvhImGaSctn9bhAKvng7EkrQjgV3cf C9GMgK0vEJu+4f/sqWA7hPKUq/jW5vRETcvqEp7v7z+56kqq5LUQE5+slsEb/A4lMP4ppwd+ TPwwDrtVlKNqbKJOM0kPkpj7GRy3xeOYh9D7DtFj2vlmaAy6XvKav/UUU4PoUdeCRyZCRfl0 Wi8pQBh0ngQWfW/VqI7VsG3Qov5Xt7cTzLuP/PhvzM2c5ltZzEzvz7S/jbB1+pnV9P7WLMYd EjhCYzJweCgXyQHCaAWGiHvBOpmxjbHXwX/6xTOJA5CGecDeIDjiK3le7ubFwQAfCgnmnzEj pDG+3wq7co7SbtGLVM3hBsYs27M04Oi2aIDUN1RSb0vsB6c07ECT52cggIZSOCvntl6n+uMl p0WDrl1i0mJUbztQtDzGxM7nw+4pJPV4iX1jJYbWutBwvC+7F1n2F6Niu/Y3ew9a3ixV2+T6 aHWkw7/VQvXGnLHfcFbIbzNoAvI6RNnuEqoCnZHxplEr7LuxLR41Z/XAuCkvK41N/SOI9zzT GLgUyQVOksdbPaxTgBfah9QlC9eXOKYdw826rGXQsvG7h67nqi67bp1I5dMgbM/+2quY9xk0 hkWSBKFP7bXYu4kjXZUaYsoRFEfL0gB53eF21777/rR87dEhptCnaoXeqbkBDQRWnrnDAQgA 0fRG36Ul3Y+iFs82JPBHDpFJjS/wDK+1j7WIoy0nYAiciAtfpXB6hV+fWurdjmXM4Jr8x73S xHzmf9yhZSTn3nc5GaK/jjwy3eUdoXu9jQnBIIY68VbgGaPdtD600QtfWt2zf2JC+3CMIwQ2 fK6joG43sM1nXiaBBHrr0IadSlas1zbinfMGVYAd3efUxlIUPpUK+B1JA12ZCD2PCTdTmVDe DPEsYZKuwC8KJt60MjK9zITqKsf21StwFe9Ak1lqX2DmJI4F12FQvS/E3UGdrAFAj+3HGibR yfzoT+w9UN2tHm/txFlPuhGU/LosXYCxisgNnF/R4zqkTC1/ao7/PQARAQABiQIlBBgBAgAP BQJWnrnDAhsMBQkJZgGAAAoJEG/fkYZd+bdO9b4P/0y3ADmZkbtme4+Bdp68uisDzfI4c/qo XSLTxY122QRVNXxn51yRRTzykHtv7/Zd/dUD5zvwj2xXBt9wk4V060wtqh3lD6DE5mQkCVar eAfHoygGMG+/mJDUIZD56m5aXN5Xiq77SwTeqJnzc/lYAyZXnTAWfAecVSdLQcKH21p/0AxW GU9+IpIjt8XUEGThPNsCOcdemC5u0I1ZeVRXAysBj2ymH0L3EW9B6a0airCmJ3Yctm0maqy+ 2MQ0Q6Jw8DWXbwynmnmzLlLEaN8wwAPo5cb3vcNM3BTcWMaEUHRlg82VR2O+RYpbXAuPOkNo 6K8mxta3BoZt3zYGwtqc/cpVIHpky+e38/5yEXxzBNn8Rn1xD6pHszYylRP4PfolcgMgi0Ny 72g40029WqQ6B7bogswoiJ0h3XTX7ipMtuVIVlf+K7r6ca/pX2R9B/fWNSFqaP4v0qBpyJdJ LO/FP87yHpEDbbKQKW6Guf6/TKJ7iaG3DDpE7CNCNLfFG/skhrh5Ut4zrG9SjA+0oDkfZ4dI B8+QpH3mP9PxkydnxGiGQxvLxI5Q+vQa+1qA5TcCM9SlVLVGelR2+Wj2In+t2GgigTV3PJS4 tMlN++mrgpjfq4DMYv1AzIBi6/bSR6QGKPYYOOjbk+8Sfao0fmjQeOhj1tAHZuI4hoQbowR+ myxb Message-ID: Date: Mon, 17 Feb 2020 18:05:10 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20200217141708.GE1235@savella.carfax.org.uk> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 17/02/2020 14:17, Hugo Mills wrote: > On Mon, Feb 17, 2020 at 03:12:35PM +0100, Menion wrote: >> ok thanks >> I have launched it (in a tmux session), after 5 minutes the command >> did not return yet, but dmesg and btrfs balance status >> /array/mount/point report it in progress (0%). >> Is it normal? > > Yes, it's got to rewrite all of your metadata. This can take a > while (especially if you have lots of snapshots or reflinks -- such as > from running a deduper). You should be able to see progress happening > fairly regularly in dmesg. This is typically one chunk every minute or > so, although some chunks can take much *much* longer. Also, you can watch what is happening by using "btrfs filesystem usage /your/mount/point". You should see "Metadata,RAID5:" going down and "Metadata,RAID1" going up. I often leave: watch -n 10 btrfs fi usage /mount/point running in a window while doing these sorts of things so I can see how things are going at a glance.