From owner-freebsd-stable@FreeBSD.ORG Mon Mar 28 11:48:36 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 7E5A7106564A for ; Mon, 28 Mar 2011 11:48:36 +0000 (UTC) (envelope-from kometen@gmail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id 380148FC19 for ; Mon, 28 Mar 2011 11:48:35 +0000 (UTC) Received: by qwc9 with SMTP id 9so2071874qwc.13 for ; Mon, 28 Mar 2011 04:48:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:date:message-id:subject:from:to :content-type; bh=tR7pyPJNv0Scdtz3YDUT2x0PUKLaZO0c1HLcmnSeXoI=; b=LDsDLN0VY/hwkRYdAjXojJ5CyfY1Xld7oqJ1Vgx9Hy63yiY4LOCr44v1JqTxd0hRXB X8WwXWRRpV7qaGiRRJ3Y43RH9wtdc6U4q8ynV8pc2SaSkXTg2aXWnLy3Kb/xXE4pYLPC JMMXazk5kO1Qwyg8pSErtoHQzIjDbKaV525BE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=dCo8RqmK6rBuM8GmumkG4+M4ZSXPjv42MZdvvXubtYuZfxzpx3/VqjGOD2t/EvzEbz OHCznbhJ1WI8UjF7Z4YQvurfUmMf9diDOfmo5ND0aLnk0qIZnDFmDnXiTvgijpVQWdds yHORnQpj716ybUC6+tEbReQRnDygu8KQgJrhI= MIME-Version: 1.0 Received: by 10.229.105.96 with SMTP id s32mr3118222qco.185.1301311321225; Mon, 28 Mar 2011 04:22:01 -0700 (PDT) Received: by 10.229.91.144 with HTTP; Mon, 28 Mar 2011 04:22:00 -0700 (PDT) Date: Mon, 28 Mar 2011 13:22:00 +0200 Message-ID: From: Claus Guttesen To: FreeBSD Stable Content-Type: text/plain; charset=ISO-8859-1 Subject: zfs, nfs and zil 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: Mon, 28 Mar 2011 11:48:36 -0000 I've setup a server with FreeBSD 8.2 (prerelase) and patched zfs to ver. 28. The server has 11 disks each 2 TB in raidz2. The performance is very good and I've got approx. 117 MB/s on plain GB nics using iscsi. I'm mounting the FreeBSD-server from a couple of vmware esxi 4.1 servers using nfs, but when there is alot of i/o the server becomes unresponsive, easily triggered by installing ie. ms-sql. The server itself is up but is not reachable from the network. When I take the nic down and up again connection to the network is reestablished (ip-wise). A friend of mine has suggested that I disable the zil. The page http://wiki.freebsd.org/ZFSTuningGuide says 'Disabling ZIL is not recommended where data consistency is required (such as database servers) but will not result in file system corruption.' Has anyone tried to disable zil and achieved better performance and still maintain a consistent filesystem? -- regards Claus When lenity and cruelty play for a kingdom, the gentler gamester is the soonest winner. Shakespeare twitter.com/kometen