4.4 Site Restart

A site restart is a hot restart of the whole system. All data of boot actors are reset to their original values from the previously loaded archive, and the system enters its start-up phase again. As C_INIT restarts, sysadm.ini is executed again. Any calls to start restartable actors in the sysadm.ini file are ignored for a site restart, as all direct restartable actors are restarted automatically by the system once sysadm.ini has been read.

When the system is restarted, previously mounted disks are not automatically remounted. To solve this problem, ensure that they are mounted in the sysadm.ini file, or create a hot restartable actor that will mount the disks.

A site restart can be provoked automatically, by the Hot Restart Controller, according to the tunable parameters defining the system's restart policy. This is described in "2.1.3 Tunable Parameters".

To provoke a site restart programmatically, use the sysShutdown(2K) function call with the -i 1 arguments:

int sysShutdown (int argv, char** argc)

To provoke a site restart from the C_INIT command-line console, use the command shutdown -i 1 or restart(1M).