Re: HAMMER filesystem update - design document

["Thomas E. Spanjaard" <tgen@xxxxxxxxxxxxx>]

Matthew Dillon wrote:
>     The objects and records making up a HAMMER filesystem is organized into
>     a single, unified B-Tree.  Each cluster maintains a B-Tree of the
>     records contained in that cluster and a unified B-Tree is constructed by
>     linking clusters together.

Any specific reason not to go with a B+-Tree or B#-Tree which have shown 
to have advantageous effects?

Also, what, if any, will be the locking policy for multiple I/O threads 
accessing a single HAMMER filesystem? Shared/exclusive mutexes on the 
cluster level?

(Whomever invented early mornings does not deserve brownie points),
--
        Thomas E. Spanjaard
        tgen@netphreax.net

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