From owner-freebsd-current@freebsd.org Fri Oct 4 19:56:16 2019 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 40164137B75 for ; Fri, 4 Oct 2019 19:56:16 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 46lLGk3gHpz3Hdt; Fri, 4 Oct 2019 19:56:14 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (v-critter.freebsd.dk [192.168.55.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by phk.freebsd.dk (Postfix) with ESMTPS id C03E61AF403; Fri, 4 Oct 2019 19:56:12 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.15.2/8.15.2) with ESMTPS id x94JuCLI063666 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 4 Oct 2019 19:56:12 GMT (envelope-from phk@critter.freebsd.dk) Received: (from phk@localhost) by critter.freebsd.dk (8.15.2/8.15.2/Submit) id x94JuCMB063665; Fri, 4 Oct 2019 19:56:12 GMT (envelope-from phk) To: Ian Lepore cc: Warner Losh , FreeBSD Current Subject: Re: ZFS with 32-bit, non-x86 kernel In-reply-to: From: "Poul-Henning Kamp" References: <2264fde0-d386-518f-2bdb-2b86afe1faf3@blastwave.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <63663.1570218972.1@critter.freebsd.dk> Content-Transfer-Encoding: quoted-printable Date: Fri, 04 Oct 2019 19:56:12 +0000 Message-ID: <63664.1570218972@critter.freebsd.dk> X-Rspamd-Queue-Id: 46lLGk3gHpz3Hdt X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of phk@critter.freebsd.dk designates 130.225.244.222 as permitted sender) smtp.mailfrom=phk@critter.freebsd.dk X-Spamd-Result: default: False [-1.85 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.92)[-0.919,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-1.00)[-0.996,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.dk]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; IP_SCORE(0.07)[ip: (0.08), ipnet: 130.225.0.0/16(0.11), asn: 1835(0.15), country: EU(-0.01)]; FORGED_SENDER(0.30)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:1835, ipnet:130.225.0.0/16, country:EU]; FROM_NEQ_ENVFROM(0.00)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Oct 2019 19:56:16 -0000 -------- In message , I= an Le pore writes: >There have also been some bug reports as recently as 2017 indicating >that people are still doing this on small armv7 systems. I actually have a potential off-site backup server in my lab right now, consisting of a BeagleBoneBlack and two USB disks, seems to work. The basic scheme is a cronjob which: zfs import inl run various rsyncs zfs snapshot -r inl@$YYMMDDHHMM zfs export inl The import/export is so the USB disks spin down. Not sure if ZFS will croak the 512M RAM on other workloads, but for this one it seems to work fine so far. -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe = Never attribute to malice what can adequately be explained by incompetence= .