Josh Berkus asks: "One of my clients would love to convert their entire office to Linux. But one thing keeps them tied to a NetWare file server: a little utility called 'Filer' Filer allows the sysadmins to retrieve deleted and overwritten files, up to a week after the event. With 70 secretaries using that server, that ability is crucial. I've looked around the Internet, but cannot find anything quite equivalent in the Linux world, except maybe hourly backups and that's a pain. What the client really needs is a utility/mod for the filesystem or network layer that archives files instead of over-writing or deleting them. I had one kernel hacker offer to write me something like that, but my client does not want to be a test case. Note, that we have nothing against Netware, it's just that this client has historically not been able to get good Novell support. Anybody know anything that's already in production like this? Is Reiser working on this for ReiserFS?" This sounds deceptively easy. If this was a personal machine, this would be easy, but the showstopper is that this has to work as a share meaning that this "trashcan" like functionality needs to be implemented at the filesystem level. While I can understand the submittors desire to not be a test case, if there doesn't exist a ready-made solution to this particular problem, how difficult would it be to add this on to ext2/ext3, Reiserfs or some other suitable open source filesystem and test it for reliability?
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