From owner-freebsd-current@FreeBSD.ORG Sun Jan 6 20:25:32 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B15B916A418 for ; Sun, 6 Jan 2008 20:25:32 +0000 (UTC) (envelope-from kometen@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.244]) by mx1.freebsd.org (Postfix) with ESMTP id 7D4CD13C467 for ; Sun, 6 Jan 2008 20:25:32 +0000 (UTC) (envelope-from kometen@gmail.com) Received: by an-out-0708.google.com with SMTP id c14so1545512anc.13 for ; Sun, 06 Jan 2008 12:25:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=8Wt3RV0dR3Gd/DRYltjriEImDVmjU6DYIoQpGYiMemU=; b=uMDXwH9Z6LT39DrCO0x2aXIAOCCKsXOUxZqk4QKhK07y9tTlmm4cpXDzIHS/Xpk36pzqY993ywAg88ehX0OxBCAyzK51a+NrUWvw5SkU1cPwBFIKHj+tuCd+TR25vLMgvL13faA7CErLP1uYzPepN0nAM5+QprP2p9Mffs8hgjo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=B2PTTqTdakQH4bAN35pRuFZPOnDdnC00QiXKlc89/rsvJDedGJ7W6JPQrqnUq8Sh1Ai5KNPcvolyXPkR/sb4z4dGH9j7mJ4SgKoHT3kziR+l+8xS0tdy/rSt9Zq/h6wteCfmximkqgahSx67Lq/PkKbvcjTkxNDK50LphXDijIA= Received: by 10.100.128.20 with SMTP id a20mr17442485and.109.1199649635643; Sun, 06 Jan 2008 12:00:35 -0800 (PST) Received: by 10.100.242.10 with HTTP; Sun, 6 Jan 2008 12:00:35 -0800 (PST) Message-ID: Date: Sun, 6 Jan 2008 21:00:35 +0100 From: "Claus Guttesen" To: "Ivan Voras" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080106141157.I105@fledge.watson.org> <47810DE3.3050106@FreeBSD.org> Cc: freebsd-current@freebsd.org Subject: Re: When will ZFS become stable? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jan 2008 20:25:32 -0000 > >> Last I heard, rsync didn't crash Solaris on ZFS :) > > > > [Citation needed] > > I can't provide citation about a thing that doesn't happen - you don't > hear things like "oh and yesterday I ran rsync on my Solaris with ZFS > and *it didn't crash*!" often. > > But, with some grains of salt taken, consider this Google results: > > * searching for "rsync crash solaris zfs": 790 results, most of them > obviously irrelevant > * searching for "rsync crash freebsd zfs": 10,800 results; a small > number of the results is from this thread, some are duplicates, but it's > a large number in any case. > > I feel that the number of Solaris+ZFS installations worldwide is larger > than that of FreeBSD+ZFS and they've had ZFS longer. I used zfs on FreeBSD current amd64 around summer 2006 as a samba-server for internal use on a dual xeon (first generation 64-bit, somewhat slow and hot) with 4 GB ram and two qlogic hba's attached to approx. 8 TB of storage. I did not once experience any kernel panic or other unplanned stop. But I whenever I manually mounted a smbfs-share the terminal would not return to the command line. I upgraded in october 2007 and the smbfs-mount returned to the command line and I thought I was happy. Until I started to get the kmem_map too small kernel-panics when doing much I/O (syncing 40 GB of small files). I tuned the values as indicated in the zfs tuning guide and rebooted and increased the values as the kernel panics persisted. When I increased the values even more I ended up with a kernel which refused to boot, boy I was almost getting a panic myself :-) Applying Pawel's patch did make the server survive two or three 40 GB rsyncing so the patch did help. But we were approching xmas season which is a very critical time for us so I migrated to solaris 10. The solaris server has had no downtime but to conclude that solaris is more stable in my situation is premature. -- regards Claus When lenity and cruelty play for a kingdom, the gentlest gamester is the soonest winner. Shakespeare