From owner-freebsd-stable@FreeBSD.ORG Thu Dec 13 18:14:04 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E9002816; Thu, 13 Dec 2012 18:14:04 +0000 (UTC) (envelope-from olivier777a7@gmail.com) Received: from mail-pa0-f54.google.com (mail-pa0-f54.google.com [209.85.220.54]) by mx1.freebsd.org (Postfix) with ESMTP id A859E8FC0A; Thu, 13 Dec 2012 18:14:04 +0000 (UTC) Received: by mail-pa0-f54.google.com with SMTP id bi5so1625773pad.13 for ; Thu, 13 Dec 2012 10:14:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=6g0nOaq98CKYWgII6U589p3f1nd+p0JLBaOiH3ur4K0=; b=0bGzf/ZWuD0qlbcKx7GezWr3ZHtaCp4Oq9q7t6DjD73Ji3ot1d2uCjpFEW0KmEKYqq xJGLYsP5QI0qDrqfWD56Px6SiCBz5zX6QWxmS0OLFMmRSvgBbDW4QoYrZYaBe3PDS8Ke Ce84g9rvNEL2O7HQZaCaHbH3uUVfkQGUAVe6SXkFAu5I+jBnus8ZVDSGWVHUWZBfdMtw 5QxZdBZfqL/v46Ak4BqkZxDIU2mh3aDqj8CRW+4Iknqvi0fcaLEuREZi8CqudF7tRKt5 Dk8IHNDYn2plkZCns0iFFrAYQp8noECLArPjJ+yFG83HLajTZ5WCoV8pn6K4E3SOz1mN jEGg== MIME-Version: 1.0 Received: by 10.68.132.34 with SMTP id or2mr7752908pbb.133.1355422443853; Thu, 13 Dec 2012 10:14:03 -0800 (PST) Received: by 10.66.148.136 with HTTP; Thu, 13 Dec 2012 10:14:03 -0800 (PST) In-Reply-To: <50CA1639.1010409@FreeBSD.org> References: <50C9AFC6.6080902@FreeBSD.org> <50CA1639.1010409@FreeBSD.org> Date: Thu, 13 Dec 2012 10:14:03 -0800 Message-ID: Subject: Re: NFS/ZFS hangs after upgrading from 9.0-RELEASE to -STABLE From: olivier To: Andriy Gapon Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 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, 13 Dec 2012 18:14:05 -0000 On Thu, Dec 13, 2012 at 9:54 AM, Andriy Gapon wrote: > Google for "zfs deadman". This is already committed upstream and I think > that it > is imported into FreeBSD, but I am not sure... Maybe it's imported just > into the > vendor area and is not merged yet. > Yes, that's exactly what I had in mind. The logic for panicking makes sense. As far as I can tell you're correct that deadman is in the vendor area but not merged. Any idea when it might make it into 9-STABLE? Thanks Olivier > So, when enabled this logic would panic a system as a way of letting know > that > something is wrong. You can read in the links why panic was selected for > this job. > > And speaking FreeBSD-centric - I think that our CAM layer would be a > perfect place > to detect such issues in non-ZFS-specific way. > > -- > Andriy Gapon >