From owner-freebsd-questions@freebsd.org Tue Jan 19 14:50:38 2016 Return-Path: Delivered-To: freebsd-questions@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 AEE2FA8785F for ; Tue, 19 Jan 2016 14:50:38 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.infracaninophile.co.uk", Issuer "infracaninophile.co.uk" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 2FA56145B for ; Tue, 19 Jan 2016 14:50:38 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from zero-gravitas.local (no-reverse-dns.metronet-uk.com [85.199.232.226] (may be forged)) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.15.2/8.15.2) with ESMTPSA id u0JEoOV9091839 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Tue, 19 Jan 2016 14:50:33 GMT (envelope-from matthew@FreeBSD.org) Authentication-Results: smtp.infracaninophile.co.uk; dmarc=none header.from=FreeBSD.org DKIM-Filter: OpenDKIM Filter v2.10.3 smtp.infracaninophile.co.uk u0JEoOV9091839 Authentication-Results: smtp.infracaninophile.co.uk/u0JEoOV9091839; dkim=none; dkim-atps=neutral X-Authentication-Warning: lucid-nonsense.infracaninophile.co.uk: Host no-reverse-dns.metronet-uk.com [85.199.232.226] (may be forged) claimed to be zero-gravitas.local Subject: Re: Panic with sym on 10.2 To: freebsd-questions@freebsd.org References: <569E368F.4060802@netfence.it> <569E45D9.1050604@freebsd.org> <569E4ABB.9070903@netfence.it> From: Matthew Seaman Message-ID: <569E4D2A.2020301@FreeBSD.org> Date: Tue, 19 Jan 2016 14:50:18 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <569E4ABB.9070903@netfence.it> Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="hGMMF7Hq3dw0QpanWpkepXhRawi2VcNwd" X-Virus-Scanned: clamav-milter 0.99 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on lucid-nonsense.infracaninophile.co.uk X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Jan 2016 14:50:38 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --hGMMF7Hq3dw0QpanWpkepXhRawi2VcNwd Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2016/01/19 14:39, Andrea Venturoli wrote: >> Is it possible your disk controller is succumbing to the vagaries of a= ge? >=20 > I have never seen any little trouble with such a card (I've had more > than one here and at customers'); thought it might actually be dying, I= > really find it strange that it started as soon as I upgraded from 9.3 t= o > 10.2... Yeah. I've seen hardware failures triggered by big system updates before now. It's not particularly common, but it is possible for the amount of IO churn involved in updating to tip a marginal component over the edge. Generally you'll only see this sort of effect if the system is otherwise pretty quiet during normal operation. As to the failure mode -- sure these things usually die completely, but they can die gradually and in subtle ways, usually when doing that is the most inconvenient possible thing. Cheers, Matthew --hGMMF7Hq3dw0QpanWpkepXhRawi2VcNwd Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQJ8BAEBCgBmBQJWnk0wXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQxOUYxNTRFQ0JGMTEyRTUwNTQ0RTNGMzAw MDUxM0YxMEUwQTlFNEU3AAoJEABRPxDgqeTnmh4P/jsOxvaRhjgt3jdzbIFqmvJV 0FiRtaPiHG+ynjCJKTcJlcqeeE2UYXIe7PvvnAY9WTBGaK5Vlb4ZpV07E7Sy9V0m S42XHSWJR7et5Aaufy2XS2Fx6MF3dgg0v+6hO2ofpxWPsRSRznU+3mv7si+U2E8W wx9J8JXQNEwBjy8o84u9jNsgDnMqqopHpAEeNXORAhIgk5/MhF/9L1w6jPPm+mac i0lW6Z/WtSmAruA4Ky4sa6E9yuTtmbPqyBr6K+m6NHiVQZhg9Y+9ocymYQqROjQq 0T/XqOXXc4lUev5leMq64eWdU0JY5h7HaCYKvVk1NbFPoColphoFxB1Lye8BReVK mXOby2O5fGycbfzoG1aRTs44AtVTDV3pvvK4PnQKGfV4qO3rhE12Vx7dk49RNI7S fyfHsLUtp9vnUIV3X1/c9/dG8P1ylZidL+hf4U31J351DHuj0B067C7BeN74wslR tDFY/gctr8gISOQCyb9vI/Hdyny5VnWT2yGk1ctxlKjd6IrRFdYlak8QHtgS30Y8 swEvdmcU21WEgN963N9f7FwHmyLhuWFviN1wn/1//hhpDWuT5b0V7FiiXklFCkUy osvQ56YJuaGVcCSrfcFTHu3KEKjYad20s62v/EFRgNLnxH99/OpkY1tIyFMvuB34 IToLZHcp9VPLhGYadQCw =lN8k -----END PGP SIGNATURE----- --hGMMF7Hq3dw0QpanWpkepXhRawi2VcNwd--