From owner-freebsd-current@FreeBSD.ORG Sun May 24 19:37:45 2009 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 A0801106564A for ; Sun, 24 May 2009 19:37:45 +0000 (UTC) (envelope-from mat.macy@gmail.com) Received: from mail-ew0-f159.google.com (mail-ew0-f159.google.com [209.85.219.159]) by mx1.freebsd.org (Postfix) with ESMTP id 2CE968FC18 for ; Sun, 24 May 2009 19:37:44 +0000 (UTC) (envelope-from mat.macy@gmail.com) Received: by ewy3 with SMTP id 3so2858395ewy.43 for ; Sun, 24 May 2009 12:37:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=0lZ8XobugzapvM/yPYx7h+1juyp/0XWDUH93UYuMsBY=; b=T9TRB3V5jRpnUdEcBaSlod83gJDVPT1oIWX8oVJ7n8Pva10SyMczZ5nQTp6P1pDN3U 0CtIce93faeWqpF5Dt4SM/zK4YRoS3MT6rCD8vZn4ohkz4SGYXaVo7+3cmI+f2oSdL5y loGbq+zAcdW2WlLxrZJgeWjcLmKEkXFj4OL+Q= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=MG990j4nPIsq9jC3yhQ9MFyv80QbDhAeLDo6F6CUjbJREYH+qD2gvigRUWHwPBevaN oiOOEM4JOByr7VG4WwwQX5RQKV8fgPLMK2jlAmCb1wcv/sLWEiQuBb16PqXgxTbDKboK 1j9c5zuS5Pbon//LT1P5bMiUXYcHMyY2tPZfY= MIME-Version: 1.0 Sender: mat.macy@gmail.com Received: by 10.216.8.83 with SMTP id 61mr1169461weq.156.1243193864185; Sun, 24 May 2009 12:37:44 -0700 (PDT) In-Reply-To: <4FE794E9-075D-4563-B395-BD5E459937DF@exscape.org> References: <4E6E325D-BB18-4478-BCFD-633D6F4CFD88@exscape.org> <4FE794E9-075D-4563-B395-BD5E459937DF@exscape.org> Date: Sun, 24 May 2009 12:37:44 -0700 X-Google-Sender-Auth: 79dae1869a9f39ac Message-ID: <3c1674c90905241237u7834c5deg31cabf326b65d887@mail.gmail.com> From: Kip Macy To: Thomas Backman Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: ZFS panic under extreme circumstances (2/3 disks corrupted) 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, 24 May 2009 19:37:45 -0000 > > After overwriting the *beginning* of disk2 and disk3 as well, "zpool scrub" > appears to hang. Two vdev failures on the console, and zpool status hangs as > well. No panic this time around (I've waited 5 minutes and nothing appears > to happen, but the computer is usable on other ttys). The failmode property > was set to the default, i.e. wait, in both cases. > > Regards, > Thomas I'm more interested in the hang than the panic. "fletcher2" has known limitations in terms of the data integrity guarantees it can provide. If you're interested in pursuing this line of inquiry you should switch to a checksum with stronger guarantees. Cheers, Kip