From owner-freebsd-fs@freebsd.org Tue Sep 22 20:24:29 2015 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 A9F7FA021C0 for ; Tue, 22 Sep 2015 20:24:29 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) (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 80FBE1E50 for ; Tue, 22 Sep 2015 20:24:29 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 1A3632052F for ; Tue, 22 Sep 2015 16:24:28 -0400 (EDT) Received: from web3 ([10.202.2.213]) by compute6.internal (MEProxy); Tue, 22 Sep 2015 16:24:28 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-sasl-enc:x-sasl-enc; s=smtpout; bh=5OqsegE8vK91HBJ SSgSSZi9A7vM=; b=TBEGAFXVvDSwapYr0QUudOXWzL4qIPlwEK4xC9+Ny3Vy/Kx 8PVif56bLGkhCLuV21+PKaHNBb0BERrMCiSwyvu814zEL4hNBFjCr0/q80dMlAek ofMlsHF0ptjtjaFHcXak0Nd7JYtoWaMkLjNGqJdYWbEeHLrG4iL2xSB0jE5A= Received: by web3.nyi.internal (Postfix, from userid 99) id E4638102AAC; Tue, 22 Sep 2015 16:24:27 -0400 (EDT) Message-Id: <1442953467.1530841.390840385.067EC1E4@webmail.messagingengine.com> X-Sasl-Enc: hBX4z90ZtLzK2dSeb4lnX1pOrVZGRszeGQA8y0GFQOI8 1442953467 From: Mark Felder To: "InterNetX - Juergen Gotteswinter" , freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain X-Mailer: MessagingEngine.com Webmail Interface - ajax-39fe9c8e Subject: Re: [HAST] ZFS, many disks, write order Date: Tue, 22 Sep 2015 15:24:27 -0500 In-Reply-To: <560102BD.6040703@internetx.com> References: <560102BD.6040703@internetx.com> X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Sep 2015 20:24:29 -0000 On Tue, Sep 22, 2015, at 02:26, InterNetX - Juergen Gotteswinter wrote: > One of the great Hast Features is that it Hides Disk Failures from ZFS, > this has been already discussed on this List a few Months ago. > > Single ZIL Flash Drive is also not such a great Idea. I whould suggest > to start from scratch with "ZFS Best Practices". > A single ZIL is not a single point of failure for a few years now. Most people do not have a ton of data going through the ZIL and if it dies you only lose those transactions in flight, not your entire pool. -- Mark Felder ports-secteam member feld@FreeBSD.org