From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Arendt Subject: some questions Date: Sun, 04 May 2008 18:16:59 +0200 Message-ID: <481DE17B.3080407@prnet.org> Reply-To: NILFS Users mailing list Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: users-bounces-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org Errors-To: users-bounces-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org Content-Type: text/plain; charset="us-ascii"; format="flowed" To: users-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org I am very interested in nilfs2 so I have some questions ? 1. If I understood well, nilfs is always appending to the end (is this true or is also other data modified, for example to update pointers ?). What is happening if I have deleted files and cleanerd deletes the snapshots ? Will this space be written by further write operations or will it be lost ? 2. I suppose that some fragmentation will build up, is there any defragmentation tool planned ? 3. How robust is nilfs to device errors like bad sectors ? For example if you have a disk image where bad sectors are replaced by zeros, will you still be able to recover data from other sectors ?