Hi, Do you have the module installed in the path you mentioned? If yes, then you should be able to load the module using the option "--load-module=/usr/lib64/qpid/daemon/linearstore.so" or by placing "load-module=/usr/lib64/qpid/daemon/linearstore.so" into your config file. However, I believe that usually the store should be loaded by default when it is installed. That is unless you specified that you want to start the broker without any modules with the no-module-dir option. If the module is loaded, you should see in your log file something like this: 2016-10-20 22:15:25 [Store] notice Linear Store: Store module initialized; store-dir=/var/lib/qpidd/store
Additionally to loading the store, you need to have the queues created as durable and send the messages as durable/persistent. Otherwise the queues/messages will not use the persistent message store. Flow to disk feature has been removed some time ago. The functionality it provided (offloading messages from memory to disk) is now provided by the queue paging feature. Strangely, I can't find it described anywhere in the Qpid C++ broker documentation. But you can have a look at my answer in this thread - http://qpid.2158936.n2.nabble.com/How-do-I-create-a-queue-larger-than-available-RAM-td7643861.html - it describes how to configure it and it should be still valid in 1.35.0. Regards Jakub On Thu, Oct 20, 2016 at 11:56 PM, rammohan ganapavarapu < rammohanga...@gmail.com> wrote: > Hi, > > How to enable persistent message store in qpid-cpp-1.35 do i have to > install/load "/usr/lib64/qpid/daemon/linearstore.so"? also how to > configure > flow_to_disk policy? > > > Thanks, > Ram >
