From owner-freebsd-fs@FreeBSD.ORG Mon Nov 18 13:08:49 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4E041AFF for ; Mon, 18 Nov 2013 13:08:49 +0000 (UTC) Received: from mail-la0-x230.google.com (mail-la0-x230.google.com [IPv6:2a00:1450:4010:c03::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id CEFC4290F for ; Mon, 18 Nov 2013 13:08:48 +0000 (UTC) Received: by mail-la0-f48.google.com with SMTP id n7so4841821lam.35 for ; Mon, 18 Nov 2013 05:08:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=YmM6WYd//L5nZwKLgeQ6d04bBAKXnlXa1J8P6s8nTr8=; b=0S7W/4/95koakUwZPsxzagqqz+HO8691xoteIdQDJqyr4xZFIpZ+LZ6Ba47pdO8jjj Nn3tNnCnnzv8x70E4BTCfEo7COy4ET5UwIOBOpWrqZYlrRF0lT02wai7cI9o2/LWvA01 co/QepmygkyfzVVF9HuJUfDKo9bJtQm2bzhoE5tAIlDVb+RuuJO8wbpF5IMVMwml6umS R6hr2s4qpp+vLihngOznP00JmC93RV6LDvqO9VSiOUr11iUEljvt9bsZFRFN2hQv4pXf fHsPmdIxP8BX0acIFlhU5ts7VLrjeHhMzs3OEPx5hVv3mbwJ7sZ07I2cweBvgRdG/BwT sTfQ== X-Received: by 10.112.72.233 with SMTP id g9mr13853585lbv.2.1384780126830; Mon, 18 Nov 2013 05:08:46 -0800 (PST) Received: from [192.168.1.129] (mau.donbass.com. [92.242.127.250]) by mx.google.com with ESMTPSA id m5sm8725891laj.4.2013.11.18.05.08.46 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 18 Nov 2013 05:08:46 -0800 (PST) Message-ID: <528A115C.2090904@gmail.com> Date: Mon, 18 Nov 2013 15:08:44 +0200 From: Volodymyr Kostyrko User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Ivan Dimitrov , freebsd-fs@freebsd.org Subject: Re: Strange lock/crash - 100% cpu with basic command line utils References: <52821EEE.5040502@gmail.com> In-Reply-To: <52821EEE.5040502@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Nov 2013 13:08:49 -0000 12.11.2013 14:28, Ivan Dimitrov wrote: > Hello list > > This is my first time reporting a problem, so please excuse me if this > is not the right place or format. Also apology for my poor English. > > Last month we started experiencing strange locks on some of our servers. > On semi-random occasions, when typing `cd`, `ls`, `pwd` the server would > crash and start behave strangely. Sometimes the problem is reproducible, > sometimes all commands work as expected. > All servers are Intel or AMD CPUs with FreeBSD 9.2 that netboot the > latest kernel and load the OS in RAM. > All our servers are using zfs with ssd for cache. Here is an example > server: > Also we tested out with preempted and non preempted kernel. Latest kernel == GENERIC? There were some compatibility issues with certain SSD drives, for example some OCZ drives would never work correctly on Dell servers. Can you post some hardware examples too? Also last month means you were using some FreeBSD version before moving to 9.2? -- Sphinx of black quartz, judge my vow.