From nobody Sun Nov 6 14:37:08 2022 X-Original-To: questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4N4xlf5j96z4hKsH for ; Sun, 6 Nov 2022 14:37:18 +0000 (UTC) (envelope-from 4250.82.1d4f60000cac13c.81cb3728e6d153d66dd1c2d7e3dae1e6@email-od.com) Received: from s1-b0c6.socketlabs.email-od.com (s1-b0c6.socketlabs.email-od.com [142.0.176.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4N4xld69cgz3R62 for ; Sun, 6 Nov 2022 14:37:17 +0000 (UTC) (envelope-from 4250.82.1d4f60000cac13c.81cb3728e6d153d66dd1c2d7e3dae1e6@email-od.com) DKIM-Signature: v=1; a=rsa-sha256; d=email-od.com;i=@email-od.com;s=dkim; c=relaxed/relaxed; q=dns/txt; t=1667745438; x=1670337438; h=content-transfer-encoding:content-type:mime-version:references:in-reply-to:message-id:subject:to:from:date:x-thread-info:subject:to:from:cc:reply-to; bh=1GQfw0BgVCqFrbBJk99GIwLWeobQvfkTTs3HZfgEfLs=; b=jCn+vCdDHqD9Ke/UliBdLZzPt9WckPI073cqgi7kf0XqSy+HQEDXuPsx8N8iVj8DvJhgE8Dh34Du1nmZQu/OJxFKn7ziwkXWyl/PuQTK12HiGMiXPuv+8ACC8geqIghioz/UfuDY40mmNGBOx8AgmzUjBtHMhOyZOQ2GjoCg3x8= X-Thread-Info: NDI1MC4xMi4xZDRmNjAwMDBjYWMxM2MucXVlc3Rpb25zPWZyZWVic2Qub3Jn Received: from r2.us-east-2.aws.in.socketlabs.com (r2.us-east-2.aws.in.socketlabs.com [142.0.189.2]) by mxsg2.email-od.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Sun, 6 Nov 2022 09:37:11 -0500 Received: from smtp.lan.sohara.org (EMTPY [185.202.17.215]) by r2.us-east-2.aws.in.socketlabs.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Sun, 6 Nov 2022 09:37:10 -0500 Received: from [192.168.63.1] (helo=steve.lan.sohara.org) by smtp.lan.sohara.org with smtp (Exim 4.94.2 (FreeBSD)) (envelope-from ) id 1orglp-000LyG-Bf for questions@freebsd.org; Sun, 06 Nov 2022 14:37:09 +0000 Date: Sun, 6 Nov 2022 14:37:08 +0000 From: Steve O'Hara-Smith To: questions@freebsd.org Subject: Re: Zfs Guide Message-Id: <20221106143708.a72fd78c67eb4b055b138449@sohara.org> In-Reply-To: References: <20221105191506.ufa4nexieim3dhzu@freebsd> <20221105210111.2b0d80ba5ffb5deca8beed22@sohara.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; amd64-portbld-freebsd13.0) X-Clacks-Overhead: "GNU Terry Pratchett" List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4N4xld69cgz3R62 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=email-od.com header.s=dkim header.b=jCn+vCdD; dmarc=none; spf=pass (mx1.freebsd.org: domain of 4250.82.1d4f60000cac13c.81cb3728e6d153d66dd1c2d7e3dae1e6@email-od.com designates 142.0.176.198 as permitted sender) smtp.mailfrom=4250.82.1d4f60000cac13c.81cb3728e6d153d66dd1c2d7e3dae1e6@email-od.com X-Spamd-Result: default: False [-2.70 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.999]; MV_CASE(0.50)[]; FORGED_SENDER(0.30)[steve@sohara.org,4250.82.1d4f60000cac13c.81cb3728e6d153d66dd1c2d7e3dae1e6@email-od.com]; R_SPF_ALLOW(-0.20)[+ip4:142.0.176.0/20]; R_DKIM_ALLOW(-0.20)[email-od.com:s=dkim]; MIME_GOOD(-0.10)[text/plain]; MLMMJ_DEST(0.00)[questions@freebsd.org]; RCVD_TLS_LAST(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[142.0.189.2:received]; MIME_TRACE(0.00)[0:+]; FROM_NEQ_ENVFROM(0.00)[steve@sohara.org,4250.82.1d4f60000cac13c.81cb3728e6d153d66dd1c2d7e3dae1e6@email-od.com]; ASN(0.00)[asn:7381, ipnet:142.0.176.0/22, country:US]; ARC_NA(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; MID_RHS_MATCH_FROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; DKIM_TRACE(0.00)[email-od.com:+]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; DMARC_NA(0.00)[sohara.org]; DWL_DNSWL_NONE(0.00)[email-od.com:dkim] X-ThisMailContainsUnwantedMimeParts: N On Sun, 6 Nov 2022 09:26:22 -0500 Paul Mather wrote: > On Nov 6, 2022, at 3:43 AM, Michael Schuster > wrote: > > > Let me repeat what was written recently (by David Cottlehuber, IIRC): > > ZFS-based boot environments work fine on a single disk and (IMO) > > justify using ZFS all by themselves. I wouldn't want to be without them. > > > Although you don't significantly benefit from ZFS' resiliency features in > a single-disk setup (though there is still "copies=N":), you do still > significantly benefit from the other huge feature of using ZFS: its You're both quite right I should have said something like "to get the full benefits of ZFS you need at least two drives". I have something of a data security focus :) -- Steve O'Hara-Smith