From owner-freebsd-fs@FreeBSD.ORG Fri Jul 13 09:19:44 2012 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CFC93106564A for ; Fri, 13 Jul 2012 09:19:44 +0000 (UTC) (envelope-from c.kworr@gmail.com) Received: from mail-bk0-f54.google.com (mail-bk0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 4FD778FC17 for ; Fri, 13 Jul 2012 09:19:44 +0000 (UTC) Received: by bkcje9 with SMTP id je9so3092664bkc.13 for ; Fri, 13 Jul 2012 02:19:43 -0700 (PDT) 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:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=wQqSqWzHD53N0HDpN5ng0C4SBITZZlTzrWOLU1Go//k=; b=P0EDaJ1OA0m9nj896HUAKgi76ocIXZbbn3p3/7GemC4z8tMelUxUgtfOs4zq/Ii/aP KA+Z7kTHESojnwaJCnPx79xUCElUUzE2tMMq92h6xAp7TGRLMWqTVLKW2cVTputUv+K5 mDTaqPfVE1bdmFoYo67tsx0GPs891X6Zctbqg3+ThNuL/Q6gTTIK7LmMHNS9mljYCinZ A+nwe6i0nxmNAju3r63BzcntiXNZy9K1dpidu7sp+OCYlSSnrvHz+hJjsG76Vh3D/xX2 9XivtWveZJwvDcNix/CPqEEgdgsvWDdlTx13hksMIPdD+vEN4acLfVlkkj4J7kdoGqqR L2jg== Received: by 10.204.155.156 with SMTP id s28mr236829bkw.74.1342171183087; Fri, 13 Jul 2012 02:19:43 -0700 (PDT) Received: from green.tandem.local (41-200-200-46.pool.ukrtel.net. [46.200.200.41]) by mx.google.com with ESMTPS id 25sm4309652bkx.9.2012.07.13.02.19.40 (version=SSLv3 cipher=OTHER); Fri, 13 Jul 2012 02:19:41 -0700 (PDT) Message-ID: <4FFFE82B.6010109@gmail.com> Date: Fri, 13 Jul 2012 12:19:39 +0300 From: Volodymyr Kostyrko User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:12.0) Gecko/20120605 Firefox/12.0 SeaMonkey/2.9.1 MIME-Version: 1.0 To: Dennis Glatting References: <1341864787.32803.43.camel@btw.pki2.com> In-Reply-To: <1341864787.32803.43.camel@btw.pki2.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org Subject: Re: ZFS hanging X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Jul 2012 09:19:44 -0000 Dennis Glatting wrote: > I have a ZFS array of disks where the system simply stops as if forever > blocked by some IO mutex. This happens often and the following is the > output of top: Try switching to clang. Some time ago I was hit by different error - some process hangs indefinitely and can't be killed. After building system with clang I obtained a core dump at first reboot and research turned out that there was some broken directory entry in file system. Recreating damaged zfs filesystem (leaving all other pool intact) solved my problem completely. -- Sphinx of black quartz judge my vow.