On 5/8/08, C. Scott Ananian <[EMAIL PROTECTED]> wrote: > On Thu, May 8, 2008 at 3:11 PM, Marco Pesenti Gritti <[EMAIL PROTECTED]> > wrote: > > On Thu, May 8, 2008 at 8:43 PM, C. Scott Ananian <[EMAIL PROTECTED]> wrote: > > > Again, in the olpcfs design we provide a vfat-like metadata structure > > > (mounted via FUSE) so that the filesystem on the USB key appears to > > > the journal code just like the flash does. No FUSE is necessary to > > > see the files on the Windows box, although if you want to see all the > > > metadata then you need some tool. If you're transferring the file to > > > another XO, then the metadata comes along with you. > > > > These are all very good points in favor of olpcfs to me. > > > > Personally I'm pretty much sold on the design. And I'm all for > > experimenting with it on a branch (try to port journal and a few > > activities), even if it's not a priority for August. Are you aware of > > any showstopper in this regard? Feature wise it seem to be pretty much > > there already. > > The current implementation of indexes is incomplete, and there are > some design questions regarding how search results for certain key > types ought to be presented using the POSIX API. These are not > showstoppers, but I/we should finish the implementation before Journal > search would be expected to work.
Have you already thought about using something like Xapian for all the search needs? Eben will correct me, but I think that we want pretty advanced "Google like" search. Implementing all this on top of a berkeley db may mean duplicating a lot of work. I think that with a couple dozens of new lines of code, I can bring the DS rewrite to the functionality of the old DS. That will appear (hopefully soon) in: http://dev.laptop.org/git?p=users/tomeu/datastore;a=blob;f=src/olpc/datastore/indexstore.py > I also haven't implement version > tagging or version gc, but these wouldn't be required to start playing > with things. Agreed. > There are some journal integration questions, for > example w.r.t. grouping objects by action -- if a number of files have > 'action_id' set to (say) 1, is there a file named '1' with mime-type > 'text/sugar-action' somewhere with more details about the action? > That sort of thing is best figured out by actually hacking up some > code and figuring out what extra information needs to be stored. Yes, we have some unfortunate uncertainty there. But how this affect olpcfs? Thanks, Tomeu _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
