On Fri, 9 Jan 2004, Mike Waychison wrote: > > > >This may sound a little silly but it may be able to be done using > >stackable filesystem methods (aka. Zadok et. al.). I'm thinking of an > >autofs filesystem stacked on a host filesystem. The dentrys corresponding > >to mount points marked in some way and the mount occuring under it, on top > >of the host filesystem. Yes I know it sounds ugly but maybe it's not. > >Maybe it's actually quite simple. I can't give an opinion yet as I'm still > >thinking it through and haven't done any feasibility. However, this > >approach would lend itself to providing autofs filesystem transparency. A > >requirement as yet not discussed. > > > >Ian > > > > > > > Doing stackable filesystems is still an area of OS research. It turns > out to be a very hard problem to solve (if it's possible at all). > Although there are systems in the wild that appear to work, they are > usually sub-optimal because there remains alot of issues such as > maintaining coherent caches, as well as just staying coherent given that > one filesystem may be directly accessible while also accessed from > another overlayed filesystem.
Yes I see that in what I've read. But I'm thinking of a very tightly controlled autofs layer controlled only by automount. Once owned by automount that part of the underlying fs could only be accessed via automount. The boundry cases obviously are a sensitive area. > > Not really something you'd want to waste alot of time on unless your > looking for a phd thesis. ;) A masters one day might be good. Ian _______________________________________________ autofs mailing list [EMAIL PROTECTED] http://linux.kernel.org/mailman/listinfo/autofs
