acfsutil repl bg

Purpose

Starts, stops, or displays information about the Oracle ACFS replication background processes.

Syntax and Description

acfsutil repl bg -h
acfsutil repl bg {start |stop|info} mount_point

acfsutil repl bg -h displays help text and exits.

Table 16-30 contains the options available with the acfsutil repl bg command.

Table 16-30 Options for the acfsutil repl bg command

Option	Description
`start`	Starts the replication background processing.
`stop`	Stops the replication background processing
`info`	Displays information about the replication background processes.
`mount_point`	Specifies the directory where the file system is mounted.

Oracle ACFS replication uses background processes to transport file system changes, to communicate between the sites hosting the primary and standby file systems, to monitor the state of replication processing, and to apply file system changes to the standby file system. These background processes must be running for replication to function.

When replication is started with the acfsutil repl init command, these background processes are started and are registered with Oracle Clusterware so that they are automatically restarted after a restart or system failure. Usually it is not necessary to run the acfsutil repl bg command because Oracle Clusterware automatically starts and stops the background processes as file systems are mounted and unmounted or node membership changes after replication is initialized. However, replication cannot progress if one of the daemons is not running. In this case running repl bg stop followed by repl bg start ensures that all the daemons are running.

acfsutil bg start ensures that all the necessary daemons for replication are running. The daemons may run on different cluster nodes. acfsutil bg stop ensures that no daemons for the file system are running on the local node and relocates the daemons to another node if available.

You must have system administrator privileges to run the acfsutil repl bg start or acfsutil repl bg stop commands.You must have system administrator or Oracle ASM administrator privileges to run the acfsutil repl bg info command.

Examples

Example 16-24 shows the use of the acfsutil repl bg command.

Example 16-24 Using the acfsutil repl bg command

$ /sbin/acfsutil repl bg start /acfsmounts/acfs1

$ /sbin/acfsutil repl bg stop /acfsmounts/acfs1

$ /sbin/acfsutil repl bg info /acfsmounts/acfs1