From owner-freebsd-questions@freebsd.org Mon Jul 15 15:35:16 2019 Return-Path: Delivered-To: freebsd-questions@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 931E2BD0DA for ; Mon, 15 Jul 2019 15:35:16 +0000 (UTC) (envelope-from lee@adminart.net) Received: from mo6-p00-ob.smtp.rzone.de (mo6-p00-ob.smtp.rzone.de [IPv6:2a01:238:20a:202:5300::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "*.smtp.rzone.de", Issuer "TeleSec ServerPass Class 2 CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DD1C0971E6 for ; Mon, 15 Jul 2019 15:35:14 +0000 (UTC) (envelope-from lee@adminart.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1563204912; s=strato-dkim-0002; d=adminart.net; h=References:Message-ID:Date:In-Reply-To:Subject:Cc:To:From: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=CKB2bNDkxtApZHlyH4fGHXfJ64C2POTV9tb2ML7gJbI=; b=AgmPbkNl7PTYTPmB/dgTvcTu71XUZuAx/T0J7kLDsKDrs1mmdpUjxvKOcaB+dzlaVh V0obBU/Fk3Mg8Rg0C6oCvEGjLU1Qa1eFqh8BzM795i43NbFuN1kjke9kqbid5XwhJHP4 HFWvz6LFitaphtlHlelEsEbviPDIbyrZBqa8MjywYUEJIusIlCo13ZE58cUuZ0tz93TQ 2dWDU61QERu/ebnUC3A605xNTrE6Rvm4Oz3AEaUqaDRPM2dF5JaQquxw+nuzA8soEihW KH3G2iCobKy/JF+dEebJAFuI//7MN9N0OEMa2q2qObU3kPA69NE8+7azLlgQ0eVoNMoc 0Plg== X-RZG-AUTH: ":O2kGeEG7b/pS1FS4THaxjVF9w0vVgfQ9xGcjwO5WMRo5c+h5ceMqQWZ3yrBp+ARdaXvxIDf7nlw=" X-RZG-CLASS-ID: mo00 Received: from himinbjorg.adminart.net by smtp.strato.de (RZmta 44.24 DYNA|AUTH) with ESMTPSA id e0059dv6FFZCVIt (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Mon, 15 Jul 2019 17:35:12 +0200 (CEST) Received: from toy.adminart.net ([192.168.3.55]) by himinbjorg.adminart.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hn30R-0001bB-Hr; Mon, 15 Jul 2019 17:35:11 +0200 Received: from lee by toy.adminart.net with local (Exim 4.92) (envelope-from ) id 1hn30R-00014W-2O; Mon, 15 Jul 2019 17:35:11 +0200 From: hw To: Steve O'Hara-Smith Cc: freebsd-questions@freebsd.org Subject: Re: dead slow update servers In-Reply-To: <20190715055400.8528e4ea2b4b575b8649d7b1@sohara.org> (Steve O'Hara-Smith's message of "Mon, 15 Jul 2019 05:54:00 +0100") Date: Mon, 15 Jul 2019 17:00:16 +0200 Organization: my virtual residence Message-ID: <871ryrl4vz.fsf@toy.adminart.net> References: <87sgrbi3qg.fsf@toy.adminart.net> <20190712171910.GA25091@neutralgood.org> <871ryuj3ex.fsf@toy.adminart.net> <874l3qfvqw.fsf@toy.adminart.net> <20190714011303.GA25317@neutralgood.org> <87v9w58apd.fsf@toy.adminart.net> <0ed2aef9-0cb8-b7ab-711e-34f139c60285@osfux.nl> <87zhlgqlqz.fsf@toy.adminart.net> <20190715055400.8528e4ea2b4b575b8649d7b1@sohara.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Queue-Id: DD1C0971E6 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=adminart.net header.s=strato-dkim-0002 header.b=AgmPbkNl X-Spamd-Result: default: False [-3.66 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[adminart.net:s=strato-dkim-0002]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[adminart.net]; HAS_ORG_HEADER(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MX_GOOD(-0.01)[cached: smtpin.rzone.de]; DKIM_TRACE(0.00)[adminart.net:+]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.82)[-0.819,0]; R_SPF_NA(0.00)[]; FORGED_SENDER(0.30)[hw@adminart.net,lee@adminart.net]; RCVD_IN_DNSWL_LOW(-0.10)[2.0.0.0.0.0.0.0.0.0.0.0.0.0.3.5.2.0.2.0.a.0.2.0.8.3.2.0.1.0.a.2.list.dnswl.org : 127.0.5.1]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:6724, ipnet:2a01:238::/32, country:DE]; FROM_NEQ_ENVFROM(0.00)[hw@adminart.net,lee@adminart.net]; IP_SCORE(-0.73)[ipnet: 2a01:238::/32(-3.25), asn: 6724(-0.41), country: DE(-0.01)] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Jul 2019 15:35:16 -0000 Steve O'Hara-Smith writes: > On Mon, 15 Jul 2019 00:44:52 +0200 > hw wrote: > >> What is the point of doing this? When you have hardware RAID, just use >> it rather than ZFS. > > ZFS is a far better solution than hardware RAID and any other > file system. The only reason for using hardware RAID is because you cannot > use ZFS for some reason. It's more like the only reason not to use hardware RAID is when you don't have it. ZFS is just another file system with its advantages and disadvantages. That doesn't make it generally the best solution. When you use Linux or any other system it doesn't integrate well with, it's even one of your worst options. When you run FreeBSD as a VM using a file on the host as storage, ZFS may be your worst solution because it involves some unnecessary overhead. You could even say ZFS is generally the worst solution because it is incompatible with common hard- and software. Nonetheless, under the right circumstances, ZFS can still be the best solution. And why aren't there any hardware ZFS controllers?