From owner-freebsd-stable@FreeBSD.ORG Thu Apr 28 14:03:28 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 65FFD106566B for ; Thu, 28 Apr 2011 14:03:28 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (unknown [IPv6:2001:44b8:7c07:5581:266:e1ff:fe0c:8f16]) by mx1.freebsd.org (Postfix) with ESMTP id 1CB868FC0A for ; Thu, 28 Apr 2011 14:03:26 +0000 (UTC) Received: from ur.dons.net.au (ppp208-191.lns1.adl2.internode.on.net [203.122.208.191] (may be forged)) (authenticated bits=0) by cain.gsoft.com.au (8.14.4/8.14.3) with ESMTP id p3SE3NgH048046 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Thu, 28 Apr 2011 23:33:23 +0930 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Date: Thu, 28 Apr 2011 23:33:22 +0930 To: freebsd-stable List Message-Id: <537A8F4F-A302-40F9-92DF-403388D99B4B@gsoft.com.au> Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) X-Spam-Score: -0.272 () BAYES_00,RDNS_NONE X-Scanned-By: MIMEDefang 2.67 on 203.31.81.10 Subject: ZFS vs OSX Time Machine X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Apr 2011 14:03:28 -0000 Does anyone else use ZFS to store TM backups? I find that whenever my laptop (over wifi!) starts a TM the ZFS machine = it's backing up to grinds to a halt.. Other systems streaming stuff over = NFS from it also tend to stall.. I presume that TM is doing something which causes ZFS some issues but = I'm not sure how to find out what the real problem is let alone how to = fix it.. I am running FreeBSD midget.dons.net.au 8.2-PRERELEASE FreeBSD = 8.2-PRERELEASE #8 r217094M: Sat Jan 8 11:15:07 CST 2011 = darius@midget.dons.net.au:/usr/obj/usr/src/sys/MIDGET amd64 It is a 5 disk RAIDZ1 with 1.29Tb free using WD10EADS drives. I don't see any SMART errors or ZFS warnings. I have the following ZFS related tunables vfs.zfs.arc_max=3D"3072M" vfs.zfs.prefetch_disable=3D"1"=20 vfs.zfs.txg.timeout=3D5 vfs.zfs.cache_flush_disable=3D1 Any help appreciated, thanks :) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C