From owner-freebsd-questions@FreeBSD.ORG Fri Jun 19 22:07:51 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D3F4A10656C4 for ; Fri, 19 Jun 2009 22:07:51 +0000 (UTC) (envelope-from mister.olli@googlemail.com) Received: from mail-bw0-f221.google.com (mail-bw0-f221.google.com [209.85.218.221]) by mx1.freebsd.org (Postfix) with ESMTP id 597D68FC14 for ; Fri, 19 Jun 2009 22:07:50 +0000 (UTC) (envelope-from mister.olli@googlemail.com) Received: by bwz21 with SMTP id 21so51500bwz.43 for ; Fri, 19 Jun 2009 15:07:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:subject:from:reply-to:to :content-type:date:message-id:mime-version:x-mailer :content-transfer-encoding; bh=OdIsxxL9ICdBAcszMkosMh7Bj1C88kQTYomEdzbTZhM=; b=ryT1n2wl0XK5g9tcQNjaH7XgqIZalQ3+cMaiqG3PXey2dS89t38Z5jfIdWXQiDeQa8 iT5qUFJjRBH5nSDSX8YX3+rpVVy+u2ACEfGBXIQRatsGg/m+o2RrrLzvHQ37cap2jV6/ Z+YZov4+TUkDDmvQdW1OhxQ8CXAniAn4xQD3c= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=subject:from:reply-to:to:content-type:date:message-id:mime-version :x-mailer:content-transfer-encoding; b=SFgOI2VC+YipnhJG2alru/yWs7fWnjT5CzQ9QrJEuu9fbnr6F6z9WoTa1nVxi06nJG vNRIhQC4U1ubBJ3e1bmfPreVPF+QFQDz4hPqgl31dR3sFkEZGird5ItgX50rlzFo7k1c Zq7CeXUtiKvmAmZClf4xQUL1eD3qgiUp1uXeo= Received: by 10.103.217.5 with SMTP id u5mr2176685muq.43.1245449270112; Fri, 19 Jun 2009 15:07:50 -0700 (PDT) Received: from ?192.168.220.100? (Xa0ed.x.pppool.de [89.59.160.237]) by mx.google.com with ESMTPS id g1sm10653969muf.56.2009.06.19.15.07.49 (version=SSLv3 cipher=RC4-MD5); Fri, 19 Jun 2009 15:07:49 -0700 (PDT) From: Mister Olli To: freebsd-questions@freebsd.org Content-Type: text/plain Date: Sat, 20 Jun 2009 00:07:42 +0200 Message-Id: <1245449262.26909.13.camel@phoenix.blechhirn.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.5 Content-Transfer-Encoding: 7bit Subject: ZFS and block device replication X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mister.olli@googlemail.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Jun 2009 22:07:52 -0000 Hi, I'm starting digging into FreeBSD and ZFS and came up with a question which is bothering me. I'm thinking about placing block device replication (e.g. via DRDB or NDB) under a ZFS/ ZVOL. It would improve replication as it's done immediately, not within a time-frame (as the 'zfs [send/receive]' approach would. Imagine I have an active/ passive setup. would all the ZFS volumes and ZVOLs be available on the passive node, even if I haven't configured them explicitly? Regards, --- Mr. Olli