Lester Hightower wrote:
I envision the "VFS Change Logger" as a (hopefully very thin) middle-ware that sits between the kernel's VFS interfaces and a real filesystem, like ext3, reiser, etc. The "VFS Change Logger" will pass VFS calls to the underlying filesystem driver, but it will make note of certain types of calls. I have these in mind so far, but there are likely others:
open( ... , "w"), write(fd), unlink( ... ), mkdir( ... ), rmdir( ... )
I like your ideas. There's obviously a need for this type of stuff. I do think that your ideas come somewhat close to the Inter-Mezzo filesystem for Linux, which was at one time in the mainline kernel, but some time ago dropped because it wasn't being maintained. Their approach, I think, is too focused on standards and openness, rather than making something that works. Maybe your idea will have more focus. :)
http://www.inter-mezzo.org/
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