From: Dexuan Cui Subject: Can one file system be R/W mounted multiple times in Linux? Date: Fri, 9 Jan 2015 03:44:16 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Cc: "stefanha@redhat.com" To: "linux-fsdevel@vger.kernel.org" , 'linux-ext4' Return-path: Content-Language: en-US Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org The 'mount' utility allows me to mount 1 file systems multiple times at different mount points, like "mount /dev/sdb1 /a; mount /dev/sdb1 /b". I tried to write from /a and /b at the same time and it seems everything is OK and no data corruption happens. I tried only ext4 only. Can somebody please tell me if this usage is safe? I'm not familiar with the internals of fs. googling can't find an affirmative answer, I think. Thanks, -- Dexuan