From owner-freebsd-stable@FreeBSD.ORG Tue Dec 28 22:43:32 2010 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 34F42106566B for ; Tue, 28 Dec 2010 22:43:32 +0000 (UTC) (envelope-from fjwcash@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id E0A498FC12 for ; Tue, 28 Dec 2010 22:43:31 +0000 (UTC) Received: by gyf3 with SMTP id 3so4342542gyf.13 for ; Tue, 28 Dec 2010 14:43:31 -0800 (PST) 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:cc:content-type; bh=r6kc2J7XN0eUXT8YYTb9/a6nekB8jfWAKBih+hQND+4=; b=cFEVbkABeT1F93G48KOPXwkEWXOCPbikwVD9OZUh8oAnvHJrSlFyeVkJeAcr7R9ay2 bYAlBiuPqCq65hAPkVT68AFle+RbbnFR6eojt4/YxDHe3s0uX7jOVGOUQn7j80rJgAUj 6ajjIItV0mBtbvtrshDzq8nek/b29FmfhrTB4= 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 :cc:content-type; b=YiBwRIr5i+Mdw/L3VRXFMqL4wuBHCP/XTR69P0P2vihq87b/URGChRYSigtu+cs4Yl USvajtWXtU5lLAreBXeOJ9ijvnsGhze+sjAuh8+JUxzvPdj4vJ+hcRh4cXV7I+1GYris SPFxZCc1fCjtlsTCdqYjoLqpBeDl8FTesnXBc= MIME-Version: 1.0 Received: by 10.91.153.10 with SMTP id f10mr4909569ago.172.1293576211109; Tue, 28 Dec 2010 14:43:31 -0800 (PST) Received: by 10.90.153.20 with HTTP; Tue, 28 Dec 2010 14:43:30 -0800 (PST) In-Reply-To: References: <4D181E51.30401@DataIX.net> Date: Tue, 28 Dec 2010 14:43:30 -0800 Message-ID: From: Freddie Cash To: Jean-Yves Avenard Content-Type: text/plain; charset=UTF-8 Cc: freebsd-stable@freebsd.org Subject: Re: New ZFSv28 patchset for 8-STABLE: Kernel Panic 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: Tue, 28 Dec 2010 22:43:32 -0000 On Tue, Dec 28, 2010 at 9:39 AM, Jean-Yves Avenard > Now, I haven't tried using cache and log from a different disk. The > motherboard on the server has 8 SATA ports, and I have no free port to > add another disk. So my only option to have both a log and cache > device in my zfs pool, is to use two slices on the same disk. For testing, you can always just connect a USB stick, and use that for the cache. I've done this on large ZFS systems (24-drives) and on my home server (5-drives). Works nicely. That should narrow it down to either "can't use cache/log on same device" or "can't use cache and log at the same time". -- Freddie Cash fjwcash@gmail.com