I have a requirement to give a user access to an NFS share on which they may place some files, and then delete the files. Assume they are rogue and may try to really delete the files (I'm not sure if shred works via NFS but whatever is the equivalent). We don't want them to realise the NFS share has been changed (it's their home directory).
Yeah... strange requirement I know!
Is there a filesystem or setting on NFS so it appears like the user is deleting files while really they are being stored? I was told this was a revisioning file system but I could not find many references to that.
I'm aware you can "undelete" on ext3 and similar by using recovery programs but we would like something more robust than that, ideally something that stores all copies of files in some easily accessible form.
Using CentOS 5.8 . User can't delete their files because they are "rogue" and no longer trusted (it's complicated, and that's all I know).