From owner-freebsd-questions@freebsd.org Thu Jun 1 10:07:38 2017 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 6D7C1AF8802 for ; Thu, 1 Jun 2017 10:07:38 +0000 (UTC) (envelope-from m.e.sanliturk@gmail.com) Received: from mail-oi0-x22b.google.com (mail-oi0-x22b.google.com [IPv6:2607:f8b0:4003:c06::22b]) (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 C6DC373C45 for ; Thu, 1 Jun 2017 10:07:37 +0000 (UTC) (envelope-from m.e.sanliturk@gmail.com) Received: by mail-oi0-x22b.google.com with SMTP id w10so47959705oif.0 for ; Thu, 01 Jun 2017 03:07:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=0Z/IfeL+JvI81rxMnOWmSOiTCK0VXYWVywDRirJ0m/4=; b=QKEEfvhtmKoMd1/8Uu7i4aravat4UG33lgaPv407GTngYM2C6dtj46+8cR0Fs0kDNo HqwjJwbIh3r8lAl5N69u+79UiPPk1ILNhwYp5Cs9SV986QN2agqrMB8BTpIGpBgHtRvR XngeB+Nr6ThbJsv0v5XZPKacz9P5WAKv6uPpMnv3OwRf4vETTjGG7xATnlvh5gSAuCAT P3voozFsKnjWUi4nP9nQccbVGVfojv7L/ieb44c0lbBH+jhcoaT1WqSJx3ZW2hvkF/7g lSpyAr2nayyQaaDjTNqgF3mw8yUpzLesJonXQuiSDgsLFUN8ShpPPh+ruQaz39WZ3hMw Xtbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=0Z/IfeL+JvI81rxMnOWmSOiTCK0VXYWVywDRirJ0m/4=; b=oz74LMI9t5Re96wdX8DTjU5ZDd2aeOOOoW7ThNGaLFPOqr6lM5NSp/bl9kcjLaZMF7 hjU0gkxWpvEvPkN9YlkvUYufqh/yJ8pDBZkuPMvBMraDLSuZPlKDzVmMzoFznEeirUWc txpcjHzqbWLwSUQ1zKHNjswB+1jSCFboZjuAr5bCXVC07KEZtaTlIQSMGUsY0eZgi2bZ BPJ34NJ8XJXeVh34eo0QpN32HSxIG9iFucaLcMGtWIShsmxoUgbmyk/5MCExnKbew2bC LL1uFvfx/UVXLdZRrVtu6O2kHS/lNu5ooTjAV5PDVUQkuhB5AOGtvJjiww9EihP+DED4 nj1A== X-Gm-Message-State: AODbwcCrgSVsm3fLzrYg6uhazFWub7MaZspY4W8a8jXBhiXZeGit8BVA bOLSbDSIbTA3VazThHSzQBXkjBGwxg== X-Received: by 10.202.62.70 with SMTP id l67mr438247oia.46.1496311656745; Thu, 01 Jun 2017 03:07:36 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.29.69 with HTTP; Thu, 1 Jun 2017 03:07:36 -0700 (PDT) In-Reply-To: <20170601082749.GA80543@erix.ericsson.se> References: <20170529092043.GA89682@erix.ericsson.se> <20170601051030.GA39861@geeks.org> <20170601082749.GA80543@erix.ericsson.se> From: Mehmet Erol Sanliturk Date: Thu, 1 Jun 2017 03:07:36 -0700 Message-ID: Subject: Re: Advice on kernel panics To: FreeBSD Questions Mailing List Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Jun 2017 10:07:38 -0000 On Thu, Jun 1, 2017 at 1:27 AM, Raimo Niskanen < raimo+freebsd@erix.ericsson.se> wrote: > On Thu, Jun 01, 2017 at 12:10:30AM -0500, Doug McIntyre wrote: > > On Mon, May 29, 2017 at 11:20:43AM +0200, Raimo Niskanen wrote: > > > I have a server that panics about every 3 days and need some advice on > how > > > to handle that. > > > > I'd expect it is some sort of hardware failure, as I would expect > > kernel panics more on the order of once a decade with FreeBSD. Ie. > > I've seen one or two on my hundred or so servers, but its pretty rare. > > > > Check and recheck your hardware items. > > I have removed one of four memory capsules - panicked again. Will rotate > through all of them... > > > > > Runup memtest86+. Check your drive hardware, turn on SMART checking. > > I have run memtest86+ over night - no errors found. > > I have installed smartmontools - no errors found, short and long self tests > on both disks run fine. zpool scrub repaired 0 errors and has no known > data > errors. > > > Any further hints on how to "Check your drive hardware"? > > > Thank you for your advice. > -- > > / Raimo Niskanen, Erlang/OTP, Ericsson AB > _______________________________________________ > f > Also check cables , because , sometimes , some connector parts are not transmitting data properly . Another possibility may be a faulty executable binary because some bits may be changed in place . Another possibility may be power level ( Watts ) of power supply : Adding some new hardware part(s) may exceed capacity of existing power supply : When executed programs require more power , due to insufficient power level , circuits may be corrupted . If it is possible , by removing connectors of existing HDDs and installing a new OS on a spare disk may show possibility of modified binary existence . If the new install is not panicking , then existing installed parts may have defective parts . If the new install is also panicking , then your hardware ( for example , main board , circuits in main board ) has some trouble points . Mehmet Erol Sanliturk