From owner-freebsd-stable@FreeBSD.ORG Mon Mar 28 10:52:52 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 AD0AA106564A; Mon, 28 Mar 2011 10:52:52 +0000 (UTC) (envelope-from to.my.trociny@gmail.com) Received: from mail-ww0-f42.google.com (mail-ww0-f42.google.com [74.125.82.42]) by mx1.freebsd.org (Postfix) with ESMTP id B97608FC18; Mon, 28 Mar 2011 10:52:51 +0000 (UTC) Received: by wwk4 with SMTP id 4so1596784wwk.1 for ; Mon, 28 Mar 2011 03:52:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:from:to:cc:subject:organization:references :sender:date:in-reply-to:message-id:user-agent:mime-version :content-type; bh=KViQbIxGRkfFC1VESkTyldOT3bJ/nQHrGEjGbMnWNzo=; b=h4z5H97oRpkcl3MwDgITGaBtwOl3O7Xeao5wszwLSHwXo/IoPo4btPFc+/md6EdeVS mB883b5Hi0maPHsXKEaWrsA4FBXac9OxhnSw46Z2aiDgy3HNvovAcDE04xVVHb29cojc Suh6QKz6TMn8RZSJ+Zd2VwNqddX6XocVamXJc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:organization:references:sender:date:in-reply-to :message-id:user-agent:mime-version:content-type; b=VEXjXYf4Wg6bDy8B/eZu2YLO5mM0Lhezj9cqnBtPoIe30frrvvRDX9rzEyhkbQtIJD 7bbNWCxnexfNtKVSAYfAyz5LGn+x/9OxI1yVdjzCWCjjclT8tCSdlUXXggKhbKMYEEXO yMXxEYDzIkDTRig3u9m3kjuOnAiwODnJLNRWA= Received: by 10.216.9.200 with SMTP id 50mr2585158wet.83.1301309570572; Mon, 28 Mar 2011 03:52:50 -0700 (PDT) Received: from localhost ([94.27.39.186]) by mx.google.com with ESMTPS id c54sm1436080wer.30.2011.03.28.03.52.48 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 28 Mar 2011 03:52:49 -0700 (PDT) From: Mikolaj Golub To: Pete French Organization: TOA Ukraine References: Sender: Mikolaj Golub Date: Mon, 28 Mar 2011 13:52:45 +0300 In-Reply-To: (Pete French's message of "Mon, 28 Mar 2011 10:47:22 +0100") Message-ID: <86wrjj5xfm.fsf@in138.ua3> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org, freebsd-current@freebsd.org, pjd@freebsd.org Subject: Re: Any success stories for HAST + ZFS? 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 10:52:52 -0000 On Mon, 28 Mar 2011 10:47:22 +0100 Pete French wrote: >> It is not a hastd crash, but a kernel crash triggered by hastd process. >> >> I am not sure I got the same crash as you but apparently the race is possible >> in g_gate on device creation. >> >> I got the following crash starting many hast providers simultaneously: PF> This is very interestng to me - my successful ZFS+HAST only had PF> a single drive, but in my new setup I am intending to use two PF> HAST processes and then mirror across thhem under ZFS, so I am PF> likely to hit this bug. Are the processes stable once launched ? Yes, you may hit it only on hast devices creation. The workaround is to avoid using 'hastctl role primary all', start providers one by one instead. -- Mikolaj Golub