From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Tso Subject: Re: Ext2/3 block remapping tool Date: Tue, 1 May 2007 11:28:06 -0400 Message-ID: <20070501152806.GC26093@thunk.org> References: <20070426192953.GC2841@duck.suse.cz> <20070427180942.GB5967@schatzie.adilger.int> <20070430120930.GA10604@thunk.org> <20070501060142.GZ5967@schatzie.adilger.int> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: Jan Kara , linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org Return-path: Content-Disposition: inline In-Reply-To: <20070501060142.GZ5967@schatzie.adilger.int> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Tue, May 01, 2007 at 12:01:42AM -0600, Andreas Dilger wrote: > Except one other issue with online shrinking is that we need to move > inodes on occasion and this poses a bunch of other problems over just > remapping the data blocks. Well, I did say "necessary", and not "sufficient". But yes, moving inodes, especially if the inode is currently open gets interesting. I don't think there are that many user space applications that would notice or care if the st_ino of an open file changed out from under them, but there are obviously userspace applications, such as tar, that would most definitely care. - Ted