Krishna wrote: It is my understanding that the FreeBSD file system, which is the one used in the Darwin kernel of Mac OS is stackable. Is writing a loadable module on top of this a better option? in reference to stacking file systems in Darwin, you might want to read this : <http://developer.apple.com/qa/qa2001/qa1242.html> to quote : "Stacking File Systems -- Apple does not support the development of stacking VFS plug-ins on Mac OS X. We've taken this position because, in our opinion, it's not possible to create a stacking VFS plug-in that: 1. works reliably, 2. does not severely impinge on system performance, and 3. has any hope of binary (or even source-level) compatibility with future systems." AFAIK that still holds However I am led to believe that it has been done, but am not sure if it met Apple's criteria quoted above. S a m ------------------------------------------------------- Drawing on my fine command of language, I said nothing. _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.