From owner-freebsd-fs@freebsd.org Sat Sep 12 11:15:54 2015 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A322DA0263E for ; Sat, 12 Sep 2015 11:15:54 +0000 (UTC) (envelope-from nonesuch@longcount.org) Received: from mail-qg0-f41.google.com (mail-qg0-f41.google.com [209.85.192.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 659FC1036 for ; Sat, 12 Sep 2015 11:15:53 +0000 (UTC) (envelope-from nonesuch@longcount.org) Received: by qgt47 with SMTP id 47so82134274qgt.2 for ; Sat, 12 Sep 2015 04:15:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-type:content-transfer-encoding :mime-version:subject:message-id:date:references:to; bh=xSp3/DkxT5l54HdODgOYABj7VaPmq0kI3dt25DWd3og=; b=mwI3Rz1Ly4hFG0M//PHx+3U8i9lXF2zlkKNow3K2e8FJkr2meMuLKIOAPlP3VPv0GV 6FBOS+mAIe1Bqv6SYDF0ByNz3L/FNfOFAvk/4lPS6ZuNi2nYFDZAJCQgDX6exIm+S/mE bTQCF1EZrtG3qHiGgYeBZtxTov5zEIlcD3LHOh7kSTRS7h8+qKqXhZ/UZgvqdVS/M9jN oQ6ayvBnpdqidqn8rmIhjLfbW2Sl08MjDzkLDnRavyi4x0fCUfhwvlQlpOTA7UTtFZW4 22J4E0J+QSdX5qcjLEgVHiZqVFYTQ2l7ZqHO7U61pQOVpE6woaYLJAoEabSRRvJcCN62 sRgg== X-Gm-Message-State: ALoCoQkku7+RHnFF/iZ7w5vgcdrFOHVCVrMYLFxgYam0lr/E9bHFvqrNlRssalREWnnmPbXndO7u X-Received: by 10.140.92.133 with SMTP id b5mr5493273qge.55.1442056547303; Sat, 12 Sep 2015 04:15:47 -0700 (PDT) Received: from [192.168.1.113] (ool-182c6ffa.dyn.optonline.net. [24.44.111.250]) by smtp.gmail.com with ESMTPSA id r5sm1870338qkr.26.2015.09.12.04.15.46 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 12 Sep 2015 04:15:46 -0700 (PDT) From: Mark Saad Mime-Version: 1.0 (1.0) Subject: Fwd: L2ARC and pool corruption Message-Id: <76AD038E-4D72-48BB-8A3B-BD9BD76F9350@longcount.org> Date: Sat, 12 Sep 2015 07:15:45 -0400 References: To: freebsd-fs@freebsd.org X-Mailer: iPhone Mail (12H321) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Sep 2015 11:15:54 -0000 --- Mark Saad | nonesuch@longcount.org Begin forwarded message: > From: Ryan Zezeski > Subject: L2ARC and pool corruption >=20 > A bug was discovered in L2ARC that can cause pool metadata corruption and u= ltimately prevents the pool from being imported. This bug was introduced bac= k in Dec 2014. A fix is currently under review. >=20 > I recommend that we disable L2ARC for any SmartOS platform images that inc= lude this commit: >=20 > commit 89c86e32293a30cdd7af530c38b2073fee01411c > Author: Chris Williamson > Date: Mon Dec 29 19:12:23 2014 -0800 >=20 > 5408 managing ZFS cache devices requires lots of RAM > Reviewed by: Christopher Siden > Reviewed by: George Wilson > Reviewed by: Matthew Ahrens > Reviewed by: Don Brady > Reviewed by: Josef 'Jeff' Sipek > Approved by: Garrett D'Amore >=20 > If you are unsure if a given platform includes this commit then send me th= e version string and I'll find out. >=20 > Here is the announcement on the OmniOS discussion list with more informati= on: >=20 > http://permalink.gmane.org/gmane.os.omnios.general/5113 >=20 > And the official bug report with root cause analysis: >=20 > https://www.illumos.org/issues/6214 >=20 > -Z