private String getMyJVMArgs() {
        StringBuilder sb = new StringBuilder();
        sb.append("--add-opens=java.base/java.io=ALL-UNNAMED");
        sb.append(" ");
        sb.append("-Dlogserver.rpcListenPort=").append(getRelativePort(0));
        sb.append(" ");
        sb.append("-Dlogserver.logarchive.dir=" + logArchiveDir);
        sb.append(" ");
        sb.append("-Dlogserver.logarchive.compression=" + compressionType);
        return sb.toString();
    }
Returns the jvm args to be used by the logserver.
config-model/src/main/java/com/yahoo/vespa/model/admin/Logserver.java