From owner-freebsd-current@FreeBSD.ORG  Sun Dec  8 17:31:40 2013
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@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 2A4B0537
 for <freebsd-current@freebsd.org>; Sun,  8 Dec 2013 17:31:40 +0000 (UTC)
Received: from mout.gmx.net (mout.gmx.net [212.227.15.19])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id B5A5F11C1
 for <freebsd-current@freebsd.org>; Sun,  8 Dec 2013 17:31:39 +0000 (UTC)
Received: from ASUS ([89.217.100.79]) by mail.gmx.com (mrgmx103) with ESMTPSA
 (Nemesis) id 0MFu0Y-1Vkk750gR4-00Er6c for
 <freebsd-current@freebsd.org>; Sun, 08 Dec 2013 18:31:37 +0100
From: "Stefan Hegnauer" <stefan.hegnauer@gmx.ch>
To: <freebsd-current@freebsd.org>
Subject: nanobsd / dd problem?
Date: Sun, 8 Dec 2013 18:31:36 +0100
Message-ID: <000001cef43b$591c7c90$0b5575b0$@hegnauer@gmx.ch>
MIME-Version: 1.0
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: Ac70O1iHdH6sc8CUTd+WE4nGFBizXw==
Content-Language: de-ch
X-Provags-ID: V03:K0:eDX1SLwdNi8ApP6W+u1oYg1MUc/4Ja0jQqxnWKRblUykdoQHfZ9
 xBRPiQpUqVZVrw3Fd4oKGlclQY1W6e11AMJ21NajluLIXbWQ+XS255WwbZw7UkUzAA2w1h0
 xKYsKbacqmGq6rfQNy+2rB8oG8qQ6l3SYXO4CUC+Vm1JXa9lhR4D5V53DEBHJEYhw1QQqe9
 iptYRC63Cl96auJ4DQV1Q==
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Content-Filtered-By: Mailman/MimeDel 2.1.17
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 08 Dec 2013 17:31:40 -0000

Hi,

 

I am using freebsd-current (FreeBSD BUILDMASTER 11.0-CURRENT FreeBSD
11.0-CURRENT #0 r259095: Sun Dec  8 10:20:40 CET 2013
root@BUILDMASTER:/usr/obj/usr/src/sys/ASUS  i386) in a VirtualBox as a build
machine for nanobsd images to be used on pc-engines.ch alix boards. The only
difference to GENERIC is the inclusion of 'march=geode' and disabling of
most debugging switches (malloc, Witness etc). Worked like a charm in the
past.

 

Since late summer - sorry, no exact date / svn revision - nanobsd.sh fails
at the last stage when building the disk image, e.g. with

...

00:00:25 ### log: /usr/obj/nanobsd.alixpf//_.di

#

 

Looking a bit closer it seems that dd(1) returns with an I/O error whenever
the input is a file created with mdconfig(8):

# dd if=/dev/zero of=somebackingfile bs=1k count=5k

# mdconfig -f somebackingfile -u md0

# newfs -U /dev/md0

# dd if=/dev/md0 of=/dev/null

dd: /dev/md0: Input/output error

10241+0 records in

10241+0 records out

5243392 bytes transferred in 3.240345 secs (1618159 bytes/sec)

 

The outputfile in nanobsd.sh seems to be error-free.

Anyone else seen similar behaviour? How to proceed/fix it?

 

Thanks

Stefan