5.2. Durable Queues and Guaranteed Delivery
5.2.1. Configure persistence stores
The Red Hat Enterprise Messaging broker enables persistence by default. To verify that persistence is active, make sure that the log shows that the journal is created and the store module initialized when the broker is started. The broker log will contain a line:
notice Journal "TplStore": Created
Important
If the persistence module is not loaded, messages and the broker state will not be stored to disk, even if the queue is marked durable, and messages are marked persistent.
The
--store-dir command specifies the directory used for the persistence store and any configuration information. The default directory is /var/lib/qpidd when qpidd is run as a service, or ~/.qpidd when qpidd is run from the command line. If --store-dir is not specified, a subdirectory is created within the directory identified by --data-dir; if --store-dir is not specified, and --no-data-dir is specified, an error is raised.
Important
Only one running broker can access a data directory at a time. If another broker attempts to access the data directory it will fail with an error stating:
Exception: Data directory is locked by another process.
