Message logs

iSCSI Daemon

The macOS Launch Daemon logs error messages to the Apple System Logger (ASL). The contents of the apple system logger may be accessed by using the desktop Console application. Messages consist of notification messages (e.g., logging into or out of a target) alongside error and warning messages (e.g., login failures, corrupt iSCSI configuration file, etc.).

Kernel Extension

The kernel extension only logs error messages (debug messages) when built with debug symbols. These messages are standard kernel messages that may be viewed using command-line tools (e.g., dmesg) or the desktop Console application. Various tasks (e.g., sending or receiving PDUs, queuing tasks, etc.) are logged with a timestamp and information about the iSCSI session and connection identifiers, if applicable.