From owner-freebsd-fs@FreeBSD.ORG  Mon Jun  4 12:08:02 2012
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 6B858106566B
	for <freebsd-fs@freebsd.org>; Mon,  4 Jun 2012 12:08:02 +0000 (UTC)
	(envelope-from ronald-freebsd8@klop.yi.org)
Received: from smarthost1.greenhost.nl (smarthost1.greenhost.nl
	[195.190.28.78])
	by mx1.freebsd.org (Postfix) with ESMTP id E44878FC1C
	for <freebsd-fs@freebsd.org>; Mon,  4 Jun 2012 12:08:01 +0000 (UTC)
Received: from smtp.greenhost.nl ([213.108.104.138])
	by smarthost1.greenhost.nl with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32)
	(Exim 4.69) (envelope-from <ronald-freebsd8@klop.yi.org>)
	id 1SbW4l-0003lQ-VP
	for freebsd-fs@freebsd.org; Mon, 04 Jun 2012 14:08:00 +0200
Received: from [81.21.138.17] (helo=ronaldradial.versatec.local)
	by smtp.greenhost.nl with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)
	(Exim 4.72) (envelope-from <ronald-freebsd8@klop.yi.org>)
	id 1SbW4l-00055u-Sr
	for freebsd-fs@freebsd.org; Mon, 04 Jun 2012 14:07:59 +0200
Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes
To: freebsd-fs@freebsd.org
References: <CAAVO5+LzKnmh+HxaPs1PA1bA4+bcbijnHakW6xF72+J_tGhx-A@mail.gmail.com>
	<CAAVO5+Kaf348CVeP1uzfKMJ0cS34SzkXyzt1-hXRY_earV_b-A@mail.gmail.com>
Date: Mon, 04 Jun 2012 14:07:58 +0200
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
From: "Ronald Klop" <ronald-freebsd8@klop.yi.org>
Message-ID: <op.wfdnzktr8527sy@ronaldradial.versatec.local>
In-Reply-To: <CAAVO5+Kaf348CVeP1uzfKMJ0cS34SzkXyzt1-hXRY_earV_b-A@mail.gmail.com>
User-Agent: Opera Mail/11.64 (Win32)
X-Virus-Scanned: by clamav at smarthost1.samage.net
X-Spam-Level: /
X-Spam-Score: 0.0
X-Spam-Status: No, score=0.0 required=5.0 tests=BAYES_50 autolearn=disabled
	version=3.2.5
X-Scan-Signature: 76f3589a93270604ea078d468a2051b3
Subject: Re: "panic: snapblkfree: inconsistent block type" on FreeBSD 9.0
 RELEASE
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 04 Jun 2012 12:08:02 -0000

On Sun, 03 Jun 2012 20:08:07 +0200, José García Juanino  
<jjuanino@gmail.com> wrote:

> On 3 June 2012 14:16, José García Juanino <jjuanino@gmail.com> wrote:
>> Hi,
>>
>> I am getting a lot of "snapblkfree: inconsistent block type" panics on
>> my FreeBSD 9.0-RELEASE. My file systems have not any inconsistencies,
>> I am checked them with fsck. But I have some snapshots with softupdate
>> inconsistencies  (fsck_ffs /path/to/snapshot), and I suspect that may
>> be the cause of the panics. I have several questions:
>>
>> 1- Snapshots with fsck inconsistencies might be the cause of my panics?
>> 2- Should I remove any of such "corrupt" snapshots?
>>
>> If someone is interested, I can provide a full backtrace. Kernel is
>> GENERIC, with no tweaks. File system are been created with normal
>> "newfs -U". No special setting is using.
>
> I have three full core dumps:
>
> http://www.mipaginapersonal.movistar.es/web3/jjuanino/core.txt.1
> http://www.mipaginapersonal.movistar.es/web3/jjuanino/core.txt.2
> http://www.mipaginapersonal.movistar.es/web3/jjuanino/core.txt.3
>
> The relevant code is, in the three examples:
>
> #3  0xffffffff80a40124 in ffs_snapblkfree (fs=0xfffffe0002deb000,
> devvp=Variable "devvp" is not available.
> )
>     at /usr/src/sys/ufs/ffs/ffs_snapshot.c:1799
>
> Regards

I don't know about the internals of FFS, but I know there were some fixes  
to FFS + snapshots ( + journal (SUJ) ??) after 9.0-RELEASE. So maybe you  
can test updating to and running with 9-STABLE.

Ronald.