From owner-freebsd-stable@freebsd.org  Tue Aug 23 11:31:59 2016
Return-Path: <owner-freebsd-stable@freebsd.org>
Delivered-To: freebsd-stable@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 32776BC3BE7
 for <freebsd-stable@mailman.ysv.freebsd.org>;
 Tue, 23 Aug 2016 11:31:59 +0000 (UTC)
 (envelope-from gpalmer@freebsd.org)
Received: from mail.in-addr.com (mail.in-addr.com
 [IPv6:2a01:4f8:191:61e8::2525:2525])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id F0FDB1DB8
 for <freebsd-stable@freebsd.org>; Tue, 23 Aug 2016 11:31:58 +0000 (UTC)
 (envelope-from gpalmer@freebsd.org)
Received: from gjp by mail.in-addr.com with local (Exim 4.87 (FreeBSD))
 (envelope-from <gpalmer@freebsd.org>)
 id 1bc9vv-0008YL-Si; Tue, 23 Aug 2016 12:31:56 +0100
Date: Tue, 23 Aug 2016 12:31:55 +0100
From: Gary Palmer <gpalmer@freebsd.org>
To: Gerhard Schmidt <estartu@ze.tum.de>
Cc: Daniel Braniss <danny@cs.huji.ac.il>,
 freebsd-stable <freebsd-stable@freebsd.org>
Subject: Re: Problems with piped tar
Message-ID: <20160823113155.GB56297@in-addr.com>
References: <96b7f57f-74ac-9445-1d04-61327ab111dc@ze.tum.de>
 <E0606B64-AF3A-4FB9-BCF8-9F7C7AE85FE7@cs.huji.ac.il>
 <6a841a00-6765-f1a2-02c3-9ce87ec595e8@ze.tum.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <6a841a00-6765-f1a2-02c3-9ce87ec595e8@ze.tum.de>
X-SA-Exim-Connect-IP: <locally generated>
X-SA-Exim-Mail-From: gpalmer@freebsd.org
X-SA-Exim-Scanned: No (on mail.in-addr.com); SAEximRunCond expanded to false
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-stable>, 
 <mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable/>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 23 Aug 2016 11:31:59 -0000

On Tue, Aug 23, 2016 at 09:35:12AM +0200, Gerhard Schmidt wrote:
> Am 23.08.2016 um 09:18 schrieb Daniel Braniss:
> > 
> >> On 23 Aug 2016, at 10:06, Gerhard Schmidt <estartu@ze.tum.de> wrote:
> >>
> >> Hi,
> >>
> >> i'm quite often use tar to copy files using
> >>
> >> tar cf - /some/dir | (cd /dest/dir; tar xvvf - )
> > the ???new??? way:
> > 	tar cf - /some/dir | tar xvvd - -C /dest/dir
> > which of course does not explain way your version hangs, but this one is cleaner, and btw, don???t
> > include /.
> 
> that's very strange. It's working, but doesn't solve another related
> problem. When i pipe the tar thru nc a have the same problem as my
> version. And it's no difference if there is a tar c an the receiving end
> of nc or just a '> file.tar'

Is the sending side using nc -N ?  If not, the sending socket is not being
shut down.

Regards,

Gary