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Safety

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  • A PID Is Not a Virtual Machine

    In Design 890 words 5 min

    DesignQMPRecoverySafety

    This essay explains Linux runtime process identity and crash recovery in Barn 1.1.0. The separate native Mac lifecycle uses per-machine operation locks and runner protocol 2. A pidfile records a process ID at the moment it was written. Minutes or …

    This essay explains Linux runtime process identity and crash recovery in Barn 1.1.0. The separate native Mac lifecycle uses per-machine operation locks and runner protocol 2. A pidfile records a process ID at the moment it was written. Minutes or …

  • Declarative Does Not Mean Destructive

    In Design 1118 words 6 min

    DesignLifecycleDriftSafety

    This essay explains the Linux VM convergence model in Barn 1.1.0 (macOS guests are managed independently). A declarative tool compares live state against a configuration file—but in daily development, that file might be temporarily edited for …

    This essay explains the Linux VM convergence model in Barn 1.1.0 (macOS guests are managed independently). A declarative tool compares live state against a configuration file—but in daily development, that file might be temporarily edited for …