From owner-freebsd-fs@freebsd.org Thu Jun 30 18:57:06 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BD278B87F21 for ; Thu, 30 Jun 2016 18:57:06 +0000 (UTC) (envelope-from julien@perdition.city) Received: from relay-b03.edpnet.be (relay-b03.edpnet.be [212.71.1.220]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "edpnet.email", Issuer "Go Daddy Secure Certificate Authority - G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 555D92626 for ; Thu, 30 Jun 2016 18:57:05 +0000 (UTC) (envelope-from julien@perdition.city) X-ASG-Debug-ID: 1467313022-0a88181ce65c6900001-3nHGF7 Received: from mordor.lan (213.219.165.225.bro01.dyn.edpnet.net [213.219.165.225]) by relay-b03.edpnet.be with ESMTP id etcvwDXBSNFndvoE (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 30 Jun 2016 20:57:03 +0200 (CEST) X-Barracuda-Envelope-From: julien@perdition.city X-Barracuda-Effective-Source-IP: 213.219.165.225.bro01.dyn.edpnet.net[213.219.165.225] X-Barracuda-Apparent-Source-IP: 213.219.165.225 Date: Thu, 30 Jun 2016 20:57:01 +0200 From: Julien Cigar To: Chris Watson Cc: Ben RUBSON , freebsd-fs@freebsd.org Subject: Re: HAST + ZFS + NFS + CARP Message-ID: <20160630185701.GD5695@mordor.lan> X-ASG-Orig-Subj: Re: HAST + ZFS + NFS + CARP References: <20160630144546.GB99997@mordor.lan> <71b8da1e-acb2-9d4e-5d11-20695aa5274a@internetx.com> <20160630153747.GB5695@mordor.lan> <63C07474-BDD5-42AA-BF4A-85A0E04D3CC2@gmail.com> <678321AB-A9F7-4890-A8C7-E20DFDC69137@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="9UV9rz0O2dU/yYYn" Content-Disposition: inline In-Reply-To: <678321AB-A9F7-4890-A8C7-E20DFDC69137@gmail.com> User-Agent: Mutt/1.6.1 (2016-04-27) X-Barracuda-Connect: 213.219.165.225.bro01.dyn.edpnet.net[213.219.165.225] X-Barracuda-Start-Time: 1467313022 X-Barracuda-Encrypted: ECDHE-RSA-AES256-GCM-SHA384 X-Barracuda-URL: https://212.71.1.220:443/cgi-mod/mark.cgi X-Barracuda-Scan-Msg-Size: 2082 X-Virus-Scanned: by bsmtpd at edpnet.be X-Barracuda-BRTS-Status: 1 X-Barracuda-Bayes: INNOCENT GLOBAL 0.5000 1.0000 0.0100 X-Barracuda-Spam-Score: 0.01 X-Barracuda-Spam-Status: No, SCORE=0.01 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.30904 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Jun 2016 18:57:06 -0000 --9UV9rz0O2dU/yYYn Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jun 30, 2016 at 11:32:17AM -0500, Chris Watson wrote: >=20 >=20 > Sent from my iPhone 5 >=20 > >=20 > >>=20 > >> Yes that's another option, so a zpool with two mirrors (local +=20 > >> exported iSCSI) ? > >=20 > > Yes, you would then have a real time replication solution (as HAST), co= mpared to ZFS send/receive which is not. > > Depends on what you need :) > >=20 > >>=20 > >>> ZFS would then know as soon as a disk is failing. >=20 > So as an aside, but related, for those watching this from the peanut gall= ery and for the benefit of the OP perhaps those that run with this setup mi= ght give some best practices and tips here in this thread on making this a = good reliable setup. I can see someone reading this thread and tossing two = crappy Ethernet cards in a box and then complaining it doesn't work well.= =20 It would be more than welcome indeed..! I have the feeling that HAST isn't that much used (but maybe I am wrong) and it's difficult to find=20 informations on it's reliability and concrete long-term use cases... Also the pros vs cons of HAST vs iSCSI >=20 > Perhaps those doing this could listed recommended NICs so write performan= ce of the slave over the network isn't slow as sin, or their relevant part = of their config scripts to get this running well, any sysctl's set to boost= performance, gotcha's you e seen using this setup, and if a mirror failed = were you happy with this. India during recovery? Anything that will help cu= rrent and future folks stumbling across this thread I think would be a big = help in getting this good idea used a little more widely.=20 >=20 > Chris > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" --=20 Julien Cigar Belgian Biodiversity Platform (http://www.biodiversity.be) PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 No trees were killed in the creation of this message. 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