Messages in this thread | | | From | James Davies <> | Subject | Re: Multiplexing filesystem | Date | Tue, 27 Nov 2001 17:38:42 +1000 |
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What about implimenting something like KDE's IOSlaves at kernel level? you could then create a symlink to any recognized URL. This would also have plenty of other uses.
On Tue, 27 Nov 2001 13:59, Mark Richards wrote: > Quick question, which I suspect has a long answer. > > I would like to write a multiplexing filesystem. The idea is as follows: > > The filesystem would ideally wrap another filesystem, such as nfs or smbfs > or ext2. Most operations would just be passed to the native fs call. > However, for some files, selectable at run time by some control singal, > would actually reside on another file system. The other filesystem would > have to be mounted. > > The idea is for a version controlling filesystem. The server would be a > network server (hence the desire to wrap nfs) which presents a 'view' of > the source code. When the user reserves a file for editing, the file is > copied to the local disk. From that point on, the local file is referred > to until the user commits the change or unreserves the file. Ideally, the > local copy of the file could be on any file system, not one that is > necessarily local. And this has to be totally transparent to the user, > except for the step where the user 'reserves' the file. > > I've thought about two ways to do this. One is to wrap the 'versioning' > file system with a multiplexor that checks fs calls to see if they are > referring to a file that is on a different fs. The other approach is to > intercept calls to the VFS to do the same trick. > > I'm new to the whole filesystem-coding thing, so bear with me if what i've > just said makes no sense. So, my question (I guess it wasn't quick after > all) is: Can it be done, and are either of my two approaches feasible? Any > suggestions or tips? > > Thanks, > Mark Richards > > PS please CC me if possible. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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