From owner-freebsd-stable@FreeBSD.ORG Thu Apr 17 18:34:31 2008 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CF4C1106567A for ; Thu, 17 Apr 2008 18:34:31 +0000 (UTC) (envelope-from zbeeble@gmail.com) Received: from yw-out-2324.google.com (yw-out-2324.google.com [74.125.46.31]) by mx1.freebsd.org (Postfix) with ESMTP id 865128FC18 for ; Thu, 17 Apr 2008 18:34:31 +0000 (UTC) (envelope-from zbeeble@gmail.com) Received: by yw-out-2324.google.com with SMTP id 2so116740ywt.13 for ; Thu, 17 Apr 2008 11:34:26 -0700 (PDT) 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:references; bh=vmaM87FSP70fDqbRmMMN+YJWoLCs8r8j+6gniysaSPM=; b=WQ/PDiWznAHGJnyCQaDVjjRoDa5Oce7TyCA/iyuUjWWvjDyxQ1hfaUObTcJ5lVgujH4bF2Xch3QsiC4SSAuIeswbm4J2Xg7YDx3FWQ/4egQNfJ1pOV2KZ/b/PKHPXd5E3SdnbiCWnZ9I06Hx8nK0xuFhNraKr97TmpwtajX8YK8= 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:references; b=vLbdrQIqo+nBPeyr8ysPzevlbqRY9VyMzyjCHgXUPgMDQMhWB27qmbNaiqXyDfwCZPmZeoTlqoX485C0Efk5TQ6Sd7COQCRIXmEh2AF6yCG5ezZNTXj9c1krtSPal8mtPpPUzBSAcl95387X3vUQi+G1Kx2AA9h6KqzBlCPnTwg= Received: by 10.150.225.14 with SMTP id x14mr2060512ybg.119.1208455749634; Thu, 17 Apr 2008 11:09:09 -0700 (PDT) Received: by 10.150.156.14 with HTTP; Thu, 17 Apr 2008 11:09:09 -0700 (PDT) Message-ID: <5f67a8c40804171109o264ad120wa442f21be8a4bb33@mail.gmail.com> Date: Thu, 17 Apr 2008 14:09:09 -0400 From: "Zaphod Beeblebrox" To: "Pete French" In-Reply-To: MIME-Version: 1.0 References: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: stable@freebsd.org Subject: Re: Dreadful gmirror performance, though each half works fine 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, 17 Apr 2008 18:34:31 -0000 On Thu, Apr 17, 2008 at 7:18 AM, Pete French wrote: > I am trying to run a system with a pair of drives mirrored under > gmirror, one of thhem being local and the other remote using ggated. > I have experimented with this rather extensively and have operationally decided not to use ggated in combination with gmirror --- it doesn't appear to work as well as one might expect. Some improvements were made to ggated awhile ago --- to improve error recovery. It should have helped, but didn't. I'm somewhat vaguely wondering if zfs with one local and one ggated disk will work well.