DragonFly kernel List (threaded) for 2007-02
Re: Initial filesystem design synopsis.
Victor Balada Diaz wrote:
> On Wed, Feb 21, 2007 at 02:22:16PM -0800, Matthew Dillon wrote:
> > Here is my initial outline of the filesystem design. It is open
> > for discussion. Please feel to ask questions for anything you do
> > not understand. I do not intend to start coding anything for at
> > least two weeks.
> > There are currently two rough spots in the design. First, how to
> > handle segment overflows in a multi-master environment. Such overflows
> > can occur when the individual masters or slaves have different historical
> > data retention policies. Second, where to store the regeneratable
> > indexes.
> Maybe i missed it but you don't talk at all about security of the FS
> and i guess that this is a very important topic for a FS that
> it's going to work over the internet and be connected to insecure
> Eg: What if i want to share a file with you, but i don't
> want anyone else on the cluster to be able to read or modify it?
I was wondering as well if there would be NFS functionality
included in some way, which is more or less what you're asking I
An example could be an NFS-exported /var/mail. It'd be nice if
rather than maintaining a synchronized clustered fs with
everyone's mail in /var/mail/ on every master, then exporting
specific directories to specific addresses via NFS, we could
allow specific addresses to become a part of the fs for specific
Short of that, I suppose a FS per consumer would achieve the
same thing if circumstances allow.