From owner-freebsd-stable@FreeBSD.ORG Wed May 5 15:19:34 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 585781065673 for ; Wed, 5 May 2010 15:19:34 +0000 (UTC) (envelope-from fjwcash@gmail.com) Received: from mail-iw0-f175.google.com (mail-iw0-f175.google.com [209.85.223.175]) by mx1.freebsd.org (Postfix) with ESMTP id 0EB0B8FC0C for ; Wed, 5 May 2010 15:19:33 +0000 (UTC) Received: by iwn5 with SMTP id 5so6268756iwn.9 for ; Wed, 05 May 2010 08:19:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=C29gEfZQQpsprR6LC2LTqm3slJXBu8AepZc6rFNe0C8=; b=NWdXOJORZBxP0qRManeJuDYxmeejCl/YsmdB8dlf+kuDDPzGljrCzft7XAX79+YGw/ MT1VIE/vgQ7tDTM1j6OrufHuyF6IvaK762H3bYFCt6XNbRq/XX7hRPBJsBnqJtEnOC13 SfMbjDCfqq94xKYwL0fGXiTxA0uismbahG4NI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=SX2pRkOIeycr3kmagptFnz7hja1hYX9LzN4Tw6mDavp1mo3cXe8hn8u1QMDrIh/Hqs SyYJpFdfZlES7GDLhSnflnSWzdEZIq+Hp8GCeVszmvjoSrJkNloL7kGlzj8nQNeIbYMR O+EFAeBH26dnhM4XANxTia68cv2hSW5TQPhbI= MIME-Version: 1.0 Received: by 10.231.166.16 with SMTP id k16mr1840434iby.14.1273072763033; Wed, 05 May 2010 08:19:23 -0700 (PDT) Received: by 10.231.16.69 with HTTP; Wed, 5 May 2010 08:19:22 -0700 (PDT) In-Reply-To: <4BE110E3.8040902@zirakzigil.org> References: <4BDEA86E.3050109@zirakzigil.org> <20100503110100.GA93137@icarus.home.lan> <4BDEC106.3040807@zirakzigil.org> <4BE110E3.8040902@zirakzigil.org> Date: Wed, 5 May 2010 08:19:22 -0700 Message-ID: From: Freddie Cash To: FreeBSD Stable Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: Freebsd 8.0 kmem map too small 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: Wed, 05 May 2010 15:19:34 -0000 On Tue, May 4, 2010 at 11:32 PM, Giulio Ferro wrote: > Giulio Ferro wrote: > >> Thanks, I'll try these settings. >> >> I'll keep you posted. >> > > Nope, it's happened again... Now I've tried to rise vm.kmem_size to 6G... > I'm really astounded at how unstable zfs is, it's causing me a lot of > problem. > Why isn't it stated in the handbook that zfs isn't up to production yet? > As with everything related to computers, it all depends on your uses. We've been using FreeBSD+ZFS since it first hit 7.0 with very few problems. The first month of use required a lot of tuning and testing, though, to find the correct kmem, arc, etc settings for our workload. Once we found them, though, things have been rockstable. We rsync 120 remote Linux and FreeBSD servers to our 24-drive, 18 TB backup server, every night. And then rsync that to another similar server. And share out a couple of filesytems via NFS and another couple via Samba. Expect to spend a week or two to tune ZFS, and to rebuild the pool at least once to find the optimal vdev layout. But once that's done, expect it to be solid. -- Freddie Cash fjwcash@gmail.com