From owner-freebsd-fs@FreeBSD.ORG Mon Jun 7 13:22:09 2010 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 83C101065676 for ; Mon, 7 Jun 2010 13:22:09 +0000 (UTC) (envelope-from jhellenthal@gmail.com) Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id D39B48FC1F for ; Mon, 7 Jun 2010 13:22:08 +0000 (UTC) Received: by iwn5 with SMTP id 5so4102027iwn.13 for ; Mon, 07 Jun 2010 06:22:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :x-enigmail-version:openpgp:content-type:content-transfer-encoding; bh=xYeM61mLdIcJ1eV7H9kWRIrPWMEskPThLMcodtAhMrw=; b=It4gEZIAx+Qxrt4ai9tIdQAQAjVP+TgMuVRanBJYSnGC5QACeLkcuuzDflzGZN4F1V g6k1boIihKlOBcrJqGvWaJgiReIruWKl2OoAqTWjgjOj11gJC4cDMwglwQO9Ool00kds m+XePBR2z2U+kRK3oiI97w7If2UQB+wf/V9IY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:openpgp:content-type :content-transfer-encoding; b=cp2Fb3nq7ZCQRPq6/GwmNRwch/aVR7vD9Zg1NaxE/vp+QtilgAuSA4tdImk7q2/f/E t0q8QUPwYnYP7srjuiim5sgNyoXJMhSz0+WvHyFxFvzbG56LcgS/ji13k5w/th8zCdUH ZiahzcND0G1SwZz21h/Ow3w0yY5Wi4OI7fyrA= Received: by 10.231.125.87 with SMTP id x23mr17307915ibr.88.1275916927560; Mon, 07 Jun 2010 06:22:07 -0700 (PDT) Received: from centel.dataix.local (adsl-99-181-128-180.dsl.klmzmi.sbcglobal.net [99.181.128.180]) by mx.google.com with ESMTPS id f1sm20702856ibg.21.2010.06.07.06.22.04 (version=SSLv3 cipher=RC4-MD5); Mon, 07 Jun 2010 06:22:05 -0700 (PDT) Sender: "J. Hellenthal" Message-ID: <4C0CF27B.1050402@dataix.net> Date: Mon, 07 Jun 2010 09:22:03 -0400 From: jhell User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.9.1.9) Gecko/20100515 Thunderbird MIME-Version: 1.0 To: Sergiy Suprun References: <4C0C6B54.8020005@ish.com.au> In-Reply-To: X-Enigmail-Version: 1.0.1 OpenPGP: id=89D8547E Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org Subject: Re: zfs filesystem problem 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: Mon, 07 Jun 2010 13:22:09 -0000 On 06/07/2010 01:46, Sergiy Suprun wrote: > On Mon, Jun 7, 2010 at 06:45, Jurgen Weber wrote: > >> Hello >> >> I have a FreeBSD 8.0-p2 system, which runs two pools. One with 6 disks all >> mirrored for our data and another mirrored pool for the OS. The system has >> 16GB of RAM. >> >> I have a nightly cron script running which takes a snapshot of a particular >> file system within the storage pool. This has been running for just over a >> month now without any issues until this weekend. >> >> Now we can not access the mentioned file system. If we try to `ls` to it or >> `cd` into it the shell locks up (not even kill -9 can stop the `ls` >> processes, etc) and top shows that the process state is `zfs`. This is most likely caused by some bugs that were found and fixed in stable/8. One of the commits that mm@ made has touched that zio->iowait that you should see your processes are stuck in. There still seems "at least in my case" some zio->iowait problems going on but I have not pinned that down to the cause yet, but they have not caused any of my system proccesses to freeze in that state. Grab a kernel from one of the snapshots that were made sometime last month to test this out just to be sure so your not upgrading for no reason. When I say kernel I mean kernel & modules that go with it as ZFS is a module and you will obviously need that. Please report back on your findings if the kernel from stable fixed your problem. URL to retrieve snapshots: http://bit.ly/aLoXXV Good Luck!, > Hello. > How about scrub ? > And which size of your pools and how many place used by data+snapshots? . -- jhell