From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrea Gelmini Subject: Union mount of block devices? Date: Fri, 13 Nov 2009 14:28:42 +0100 Message-ID: <9cdbb57f0911130528r3504efe2y55eb2bb4ab748568@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 To: linux-fsdevel@vger.kernel.org Return-path: Received: from mail-fx0-f221.google.com ([209.85.220.221]:65472 "EHLO mail-fx0-f221.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751765AbZKMN2h (ORCPT ); Fri, 13 Nov 2009 08:28:37 -0500 Received: by fxm21 with SMTP id 21so455606fxm.21 for ; Fri, 13 Nov 2009 05:28:42 -0800 (PST) Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Hi all, sorry to bother the ml but I'm not able to find the answer via Google. Quick answer: is it possibile to stack block devices as union mount? Something like /dev/sdb1 (ro) below /dev/sdc1 (rw)? Long story... I've got a partition with the begin of the journal over a few bad blocks (by the way, it's NTFS but it doesn't matter), so it is not possible to fix/replay journal, and so on. I can dd/dd_rescue the partition to file/partition and fix/recover all, but I just need to suck some files, so it would be a lot easier/quicker to stack a good partition (rw) over the bad one (ro). Thanks a lot for your time, Andrea