From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 075B8139337 for ; Sat, 31 Jul 2021 16:38:21 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id BACA2E094F; Sat, 31 Jul 2021 16:38:14 +0000 (UTC) Received: from mail-out-auth3.hosts.co.uk (mail-out-auth3.hosts.co.uk [85.233.191.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 365EFE0930 for ; Sat, 31 Jul 2021 16:38:13 +0000 (UTC) Received: from host86-162-184-27.range86-162.btcentralplus.com ([86.162.184.27] helo=[192.168.1.65]) by smtp.hosts.co.uk with esmtpa (Exim) (envelope-from ) id 1m9s03-0009wM-Ek for gentoo-user@lists.gentoo.org; Sat, 31 Jul 2021 17:38:12 +0100 Subject: Re: [gentoo-user] [OT] SMR drives (WAS: cryptsetup close and device in use when it is not) To: gentoo-user@lists.gentoo.org References: <9946c2eb-bb5c-a9c0-ced9-1ac269cd69a0@gmail.com> <6ecbf2d6-2c6f-3f66-5eee-f4766d5e5254@gmail.com> <24805.48814.331408.860941@tux.local> <5483630c-3cd1-bca2-0a6d-62bb85a5adc6@gmail.com> <96fc901a-2ce4-0ea0-0ed1-1c529145c0e9@gmail.com> <6102DB58.7040103@youngman.org.uk> <56d64f52-1b9a-1309-c720-06bb63c9f80a@iinet.net.au> <7a8c52c3-4c96-89ac-ace0-6eb4b8f1401f@iinet.net.au> <6104C897.5010505@youngman.org.uk> <7e6b56a2-917f-4dd6-3599-722bca5162ca@iinet.net.au> From: antlists Message-ID: <276f1643-9ef4-ae99-6480-ea5e242693c1@youngman.org.uk> Date: Sat, 31 Jul 2021 17:38:24 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 In-Reply-To: <7e6b56a2-917f-4dd6-3599-722bca5162ca@iinet.net.au> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 8bit X-Archives-Salt: 8a18f770-555e-4e64-a0e4-d062afec5ab6 X-Archives-Hash: 399588ee4549820be922b568134b1324 On 31/07/2021 05:58, William Kenworthy wrote: > Its not raid, just a btrfs single on disk (no partition).  Contains a > single borgbackup repo for an offline backup of all the online > borgbackup repo's I have for a 3 times a day backup rota of individual > machines/data stores - I get an insane amount of de-duplication that way > for a slight decrease in conveniance! So - are you using btrfs's replication ability to push a backup? Does it just push the changed blocks? I'm planning to pull a similar stunt - I've got my eye on an 8TB Toshiba N300, which I shall put lvm on, and then (my filesystems are all ext4) do a snapshot and in-place rsync. Given that my entire dataset is about 2.5TB (including films, photos etc that don't change), again, I've got a massive amount of space to hold backups for ages ... Cheers, Wol