From owner-freebsd-fs@FreeBSD.ORG Thu Apr 4 13:16:32 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id AF3CD367 for ; Thu, 4 Apr 2013 13:16:32 +0000 (UTC) (envelope-from feld@feld.me) Received: from new1-smtp.messagingengine.com (new1-smtp.messagingengine.com [66.111.4.221]) by mx1.freebsd.org (Postfix) with ESMTP id 819A2FB7 for ; Thu, 4 Apr 2013 13:16:31 +0000 (UTC) Received: from compute4.internal (compute4.nyi.mail.srv.osa [10.202.2.44]) by gateway1.nyi.mail.srv.osa (Postfix) with ESMTP id EF0B2526; Thu, 4 Apr 2013 09:16:30 -0400 (EDT) Received: from frontend2.nyi.mail.srv.osa ([10.202.2.161]) by compute4.internal (MEProxy); Thu, 04 Apr 2013 09:16:30 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=feld.me; h= content-type:to:cc:subject:references:date:mime-version :content-transfer-encoding:from:message-id:in-reply-to; s= mesmtp; bh=nCG2i0DepmfUzU9mVyNrdrFfCAA=; b=N+rh855xdaY/bZbtJFoBc 2+NAkfVj899+DR7+aj6MeTRQkvC++80gReESyFoaa1KZ1K1NK2jxArgQGi7CTjFy tLO9vzgxpPxCmGl0S/61gPbUw9p4HpjpwvpKttOLv3VPCHLcmwMVk5uWO8ySx8g2 UFDFYObrkCQ/GaIpgCO/ow= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-type:to:cc:subject:references :date:mime-version:content-transfer-encoding:from:message-id :in-reply-to; s=smtpout; bh=nCG2i0DepmfUzU9mVyNrdrFfCAA=; b=uZWR HtnrjeCrngP3HLxw4ZSiYIfLxGdbOcAc+BYZLS98oSmutObz345gPThv13ohBaod lDdlxgffSbAfqSZ9p3upVHU504+iJxOOkKIgWPvZc4Qtl776j3PifbYi+uRIVgvG A+ks546ZyyF565dgiCkfYuq9BYGntzHHfpb0AcA= X-Sasl-enc: Zxw5VN59dHCgFJqzBmSYHD+y2EfOG+KVVVX56uBJxYNY 1365081390 Received: from tech304.office.supranet.net (unknown [66.170.8.18]) by mail.messagingengine.com (Postfix) with ESMTPA id 961F7200048; Thu, 4 Apr 2013 09:16:30 -0400 (EDT) Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes To: "dennis berger" Subject: Re: ZFS in production enviroments References: <2E76F6A1-F9F8-453D-8C11-3444BB6BFE19@nipsi.de> Date: Thu, 04 Apr 2013 08:16:29 -0500 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: "Mark Felder" Message-ID: In-Reply-To: <2E76F6A1-F9F8-453D-8C11-3444BB6BFE19@nipsi.de> User-Agent: Opera Mail/12.14 (FreeBSD) Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Apr 2013 13:16:32 -0000 On Thu, 04 Apr 2013 08:02:04 -0500, dennis berger wrote: > I case of a failure do you switch the head units manually?! This was not designed to be HA storage. If we wanted to do that I'd have figured out how to bring HAST into the mix but HAST+ZFS is very messy. However, if a head unit completely died we'd just connect the JBODs to the other head unit and import the pool (you can daisy-chain them if you're out of ports on the controller). However, we do as a general rule stay under 50% storage so if we really needed to we could move all data to the other server without customers knowing, perform maintenance, and move data back.