From owner-freebsd-stable@FreeBSD.ORG Wed Mar 6 09:18:52 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 8A861BFA for ; Wed, 6 Mar 2013 09:18:52 +0000 (UTC) (envelope-from dnaeon@gmail.com) Received: from mail-wg0-f44.google.com (mail-wg0-f44.google.com [74.125.82.44]) by mx1.freebsd.org (Postfix) with ESMTP id 094A4CBF for ; Wed, 6 Mar 2013 09:18:51 +0000 (UTC) Received: by mail-wg0-f44.google.com with SMTP id dr12so6971906wgb.11 for ; Wed, 06 Mar 2013 01:18:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=0YkeAgCRAimy9P+/FxaNGJYMc3FMkpYQILwIkeHanMw=; b=pdZUD4bTrAR2jMcrxte6UQySSGoCJwq1WVJYBYwRuixKtjKuc8JELZUy0NfUbojGuf W1OYHXHUhE1KHyDQbaqK3XoCc5o6PJdEWXmJiQL5SSp7HWkKeWYpLM0jsV7cnpNdExxY KIeZvHOx+ah1nWq4p/uXAVR71Skm47mPeAMWV80OK4llG3NLW7nJYGSJgME9Jib8yxk6 7tzFEvssSm2Kj4cfqpWk79ItNMFwi6tPTjIBib9zq27yTRDCkTUrbFF+lNbAHNSnYAb7 W5XohFAcHXLgpmDatvoEDXpDlQfUQSNeG76pPSxTur9OJbpLQG2uzev22R4QrWe7dMys UNsQ== MIME-Version: 1.0 X-Received: by 10.204.8.207 with SMTP id i15mr10708777bki.19.1362561530682; Wed, 06 Mar 2013 01:18:50 -0800 (PST) Received: by 10.204.165.197 with HTTP; Wed, 6 Mar 2013 01:18:50 -0800 (PST) In-Reply-To: <1362560123.16808.4.camel@iMac-LBlot.domain.iogs> References: <1362560123.16808.4.camel@iMac-LBlot.domain.iogs> Date: Wed, 6 Mar 2013 11:18:50 +0200 Message-ID: Subject: Re: Strange reboot since 9.1 From: Marin Atanasov Nikolov To: loic.blot@unix-experience.fr Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: "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: Wed, 06 Mar 2013 09:18:52 -0000 On Wed, Mar 6, 2013 at 10:55 AM, Lo=EFc Blot = wrote: > Hello, > Hi, > Since FreeBSD 9.1 I have strange problems with the distribution. Some > servers are rebooting without any kernel panic, instanly. First i > thought it's a problem with my KVM system, but one of my FreeBSD under a > Dell R210 have the same problem. > The servers concerned are now: > - Monitoring server > - LDAP test server > - Some other servers, randomly (not in production). > First i thought it's a problem with my FreeBSD install, then i download > another time the ISO but the problem was already here. After i try > another thing, install 9.0 and upgrade to 9.1 but same problem. > How can i get informations about this problem ? > > I've had similar issues with one of my FreeBSD systems. My system had spontaneous reboots without any kernel panic, without any clear evidence of why it happened. After a lot of trials and tests the root cause appeared to be the amount of ZFS snapshots I had, which were more than 1K on a 8G system. Upgrading from 9.0 to 9.1 didn't solve the issue, as clearly I had to do some cleanup of the ZFS snapshots and since then it's more than a month without any reboots. Few pointers that you could use -- get these systems monitored and keep an eye on the monitoring system -- CPU usage, memory, processes, network traffic, etc.. I've noticed that my system was running low on free memory and that later led me to the ZFS snapshots clue. So, my advise is to get first these systems monitored and watch for anything unusual happening. Then further investigate. Good luck. Regards, Marin > Thanks for advance. > -- > Best regards, > > Lo=EFc BLOT, Engineering > UNIX Systems, Security and Networks > http://www.unix-experience.fr > > > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" --=20 Marin Atanasov Nikolov dnaeon AT gmail DOT com http://www.unix-heaven.org/