From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ryusuke Konishi Subject: Re: Inquiry: disk format change in the future Date: Thu, 20 Aug 2009 11:22:37 +0900 (JST) Message-ID: <20090820.112237.04623349.ryusuke@osrg.net> References: <20090820002457.A0C0520E21@spam-fw.osrg.net> Reply-To: NILFS Users mailing list Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090820002457.A0C0520E21-lhVA/uj0YcqwblfueUDqnA@public.gmane.org> 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 To: users-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org, yann.morin.1998-i2lMhxPFobAPxyCoDXghUg@public.gmane.org (reply added to "Yann E. MORIN") Hi, On Wed, 19 Aug 2009 11:31:56 +0200, "Yann E. MORIN" wrote: > Hello All! > > I've searched the archives, but could not find the answer to the > following questions: > > - will there be, or what is the probability of, a disk format change > in the near future (few months)? We still have some possibilities for the format change at this time. Basically I intend to keep the disk format, but some new features like - Extended attributes, ACLs - Rollback - Checkpoint based remote replication may require it. So far, we haven't seen any specific requisition. > - if so, what would be the plan for migrating existing file systems > to the new format? In that case, I think we should provide a migration tool along with the change. > I'm contemplating using nilfs2 as the file system for my server, as > it offers all the features I need. OTOH, I would be quite disapointed > if migrating my existing file systems to the new format would imply > (too long a) down-time. Quite right. I think it's good if the garbage collector or something can convert the disk format running background. > Anyway, keep up the very good work! nilfs2 is very nice! :-) Thank you! Ryusuke Konishi