How the dumpadm Command Works

During system startup, the dumpadm command is invoked by the /etc/init.d/savecore script to configure crash dumps parameters based on information in the /etc/dumpadm.conf file.

Specifically, dumpadm initializes the dump device and the dump content through the /dev/dump interface.

After the dump configuration is complete, the savecore script looks for the location of the crash dump file directory by parsing the content of /etc/dumpadm.conf file. Then, savecore is invoked to check for crash dumps and check the content of the minfree file in the crash dump directory.