From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <hughbragg@dodo.com.au>
Received: from extdelivery0.dodo.com.au (extdelivery0.dodo.com.au
 [123.2.6.231]) by mail.server123.net (Postfix) with ESMTP
 for <dm-crypt@saout.de>; Sat, 26 Mar 2016 16:00:03 +0100 (CET)
Received: from extspam2.internal (extspam2.internal [10.20.4.19])
 by extdelivery0.dodo.com.au (Postfix) with ESMTP id 6B91C224C1
 for <dm-crypt@saout.de>; Sun, 27 Mar 2016 01:50:48 +1100 (AEDT)
Received: from extrelay2.dodo.com.au (extrelay2.internal [10.20.4.25])
 by extspam2.internal (Postfix) with ESMTP id 134F120094
 for <dm-crypt@saout.de>; Sun, 27 Mar 2016 01:50:32 +1100 (AEDT)
Received: from hjbmx.ddns.net (101.106.150.122.sta.dodo.net.au
 [122.150.106.101])
 by extrelay2.dodo.com.au (Postfix) with ESMTP id 015E620BEF
 for <dm-crypt@saout.de>; Sun, 27 Mar 2016 01:50:32 +1100 (AEDT)
Received: from [192.168.0.100] (zing.localdomain [192.168.0.100])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by hjbmx.ddns.net (Postfix) with ESMTPSA id ABC521C1403
 for <dm-crypt@saout.de>; Sun, 27 Mar 2016 00:50:31 +1000 (AEST)
From: Hugh Bragg <hughbragg@dodo.com.au>
Message-ID: <56F6A1A2.4050805@dodo.com.au>
Date: Sun, 27 Mar 2016 00:50:10 +1000
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Subject: [dm-crypt] concurrency
List-Id: <dm-crypt.saout.de>
List-Unsubscribe: <http://www.saout.de/mailman/options/dm-crypt>,
 <mailto:dm-crypt-request@saout.de?subject=unsubscribe>
List-Archive: <http://www.saout.de/pipermail/dm-crypt/>
List-Post: <mailto:dm-crypt@saout.de>
List-Help: <mailto:dm-crypt-request@saout.de?subject=help>
List-Subscribe: <http://www.saout.de/mailman/listinfo/dm-crypt>,
 <mailto:dm-crypt-request@saout.de?subject=subscribe>
To: dm-crypt@saout.de

Should I be able to use Luks concurrently on a shared filesystem from
different computers?
Attempts so far have failed with writes not being seen from the other
computer until both computers remount the filesystem or reboot.
Specifically, virtualbox shareable disks and shared folders, but
potentially, any nfs/cloud storage.

Am I missing something or is there another tool for this case?