On Wed, Jul 11, 2007 at 09:53:58PM -0300, Daniel van Ham Colchete wrote: > People, > > what's the current design of locks in GlusterFS? I couldn't find the answer > looking the sources. > > Being more specific: how does cluster/unify and cluter/afr handle flock() > and fcntl byte-ranged advisory locking? Is this lock cluster-aware? I'm > considering only normal circumstances. I'm not worried with split-brain or > another type of rare situations. POSIX record locking support is provided by the posix-locks translator in GlusterFS (features/posix-locks). It supports both advisory and mandatory locking. You'd want to load this translator on each server, so that a lock would be visible to all clients. Spec file example: volume locks type features/posix-locks subvolumes brick1 # option mandatory on end-volume Vikas
