On Tue, Oct 21, 2003 at 06:17:27PM -0500, Gunnar Wolf wrote: > Here goes a bit of a wild idea, which could not be implemented today, > but we might want to push towards it: Think of the BSDs' Union > Filesystem - no such thing exists today in Linux, but anyway... If you > union-mount a filesystem on a directory of an existing filesystem, the > existing filesystem becomes read-only from that point on. The original > filesystem might in fact be mounted read-only. Every change will only > be made to the newly mounted filesystem - it will include all the > differences to the original FS. "apt-cache show translucency-source" says Package: translucency-source Maintainer: Eduard Bloch <blade@debian.org> Architecture: all Version: 0.5.9-1 Description: Filesystem translucency module - module source The translucency module adds a new feature to the Linux kernel: translucency between two filesystem directories. All changes on files in the working directory are in reality stored in the another location. This way you can have a working filesystem which becomes separated into a (read-only) persistent directory and a modifications directory on the harddisk. . [...] Is this what you are looking for? Jochen -- http://seehuhn.de/
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