Hi Corin, What do you mean by stack based design? On Wed, Jan 14, 2009 at 8:59 PM, Corin Langosch <corinl@xxxxxx> wrote: > Hi again, > > I thought glusterfs is using the stack based design instead of a > threaded one to simplify the internal design etc, for example to get rid > of nastly thread locking/ synchronization issues. > > So I wonder if it is safe to use the io-threads translator in front of > any other translator than the posix-storage translator. Wasn' the > io-threads translator be meant to be used directly before the > posix-storage translator only, as it's the only translater which has > blocking system calls? iothreads can be used anywhere. As you have mentioned its purpose is to reduce the effect of blocking system calls. All translators are thread safe. > > If all translators are thread-safe, what's the advantage of using a > stack based approach instead of a multi threaded one anyway? By stack do you mean stacking translators above one another? It was a design decision to get better modularity for feature implementation. Krishna
