From owner-freebsd-fs@FreeBSD.ORG Wed Jul 9 11:17:10 2008 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 105FA1065684; Wed, 9 Jul 2008 11:17:10 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 103F78FC12; Wed, 9 Jul 2008 11:17:05 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <48749E2E.40308@FreeBSD.org> Date: Wed, 09 Jul 2008 13:17:02 +0200 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.14 (Macintosh/20080421) MIME-Version: 1.0 To: CZUCZY Gergely References: <20080708100701.57031cda@twoflower.in.publishing.hu> <4873C4FA.2020004@FreeBSD.org> <20080708221327.5c1d0e92@mort.in.publishing.hu> <4873CF6C.7000205@FreeBSD.org> <20080708225449.1070252d@mort.in.publishing.hu> <4873F4E9.3040203@FreeBSD.org> <20080709074420.24df3be4@mort.in.publishing.hu> <20080709055645.GA40076@eos.sc1.parodius.com> <20080709123729.60d2431a@twoflower.in.publishing.hu> In-Reply-To: <20080709123729.60d2431a@twoflower.in.publishing.hu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org, Jeremy Chadwick Subject: Re: Thinking of using ZFS/FBSD for a backup system X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2008 11:17:10 -0000 CZUCZY Gergely wrote: > "Stable ZFS" would mean, that these circumstances are cleared, and there's a > proven garantee (either mathematically) that it's _unable_ to panic due to this > memory allocation issue. I suppose you can choose to use this definition if you like, but it must be kind of terrifying to live in a world where all but the most trivial of programs are "unstable" and MIGHT CRASH AT ANY MOMENT OH GOD NO. While technically true, I don't think it's a functionally useful definition to equate "stable" with "proven to be perfect", so I won't continue to debate the point. ZFS is what it is, several of us have shown that it is possible to tune memory parameters to make it fit into a FreeBSD kernel, and users can either take that for what it's worth, or decide that ZFS is not for them. Kris