Maciej Żenczykowski wrote: > And the last question: is there some sort of filesystem which supports > generating 'in-filesystem' snapshots (ie. some sort of copy-on-write > block semantics applicable both to files and directories combined with > both a root rw directory to access current files and a ro > /snapshot/YYMMDD-HHMMSS hierarchy to access snapshots from past dates > with the possibility of deleting them at will (ie. generate a snapshot > every hour, after 24 hours leave only every 6th one, after 7 days leave > only dailies, after a month leave only weeklies etc... - much too > complicated, but it's easier to get the basic idea across on a larger > example - probably organized via cronjob). WAFL does this, unfortunatly it only runs on NetApps. -jim