> I'm host a lot of web applications which share 99% of their code. > Disk space is not the issue, but bandwidth on remote backup. > So my idea is to let an filesystem automatically link together > equal files in the storage, but present them as separate ones. > Once an file gets changed, it will be unlinked/copied automatically. > > Is there already such an filesystem ?
no. however there are updatedb/compactdb which can be used to create a list of changed files and replica/applylog which can be used to apply them. i used these tools to copy history from one kenfs to a new one. i actually used cphist (/n/sources/patch/saved/cphist) and not applylog. you could also use the log on the generating machine to build a mkfs archive and compress that, ftp it and apply it on the other end. - erik
