DAOS-18378 dlck: introduce option to enable the standard DAOS log

src/utils/dlck/dlck_args.h

@@ -26,6 +26,7 @@
 /** all short options */
 #define KEY_COMMON_OPTIONS              'o'
 #define KEY_COMMON_WRITE_MODE           'w'
+#define KEY_COMMON_VERBOSE              'v'
 #define KEY_FILES                       'f'
 /** the options below follow the daos_engine options */
 #define KEY_ENGINE_NUMA_NODE            'p'
@@ -47,6 +48,7 @@
 struct dlck_args_common {
 	struct checker_options options;
 	bool          write_mode; /** false by default (dry run) */
+	bool                   verbose;    /** false by default */
 };
 
 /**

src/utils/dlck/dlck_args_common.c

@@ -24,6 +24,10 @@ static struct argp_option args_common_options[] = {
     LIST_ENTRY(DLCK_OPT_NON_ZERO_PADDING_STR "=EVENT",
 	       "Action to take when non-zero padding or reserved fields are detected. EVENT can be "
 	       "either 'error' or 'warning'. It is 'error' by default."),
+    /** this is expected to be necessary only while solving issues with the tool itself so it seems
+       to fit better with a different group */
+    {"verbose", KEY_COMMON_VERBOSE, 0, 0,
+     "Print DAOS log messages. All standard environment variables apply.", GROUP_AUTOMAGIC},
     {0}};
 
 enum dlck_options_values { DLCK_OPT_NON_ZERO_PADDING };
@@ -38,6 +42,7 @@ args_common_init(struct dlck_args_common *args)
 	memset(args, 0, sizeof(*args));
 	/** set defaults */
 	args->write_mode = false; /** dry run */
+	args->verbose                      = false;
 	args->options.cko_non_zero_padding = CHECKER_EVENT_WARNING;
 }
 
@@ -87,6 +92,9 @@ args_common_parser(int key, char *arg, struct argp_state *state)
 	case KEY_COMMON_WRITE_MODE:
 		args->write_mode = true;
 		break;
+	case KEY_COMMON_VERBOSE:
+		args->verbose = true;
+		break;
 	case KEY_COMMON_OPTIONS:
 		rc = args_common_options_parse(arg, &args->options, state);
 		break;

src/utils/dlck/dlck_main.c

@@ -37,6 +37,13 @@ main(int argc, char *argv[])
 
 	dlck_args_parse(argc, argv, &ctrl);
 
+	if (ctrl.common.verbose) {
+		rc = daos_debug_init_ex(DAOS_LOG_DEFAULT, DLOG_ERR);
+		if (rc != 0) {
+			goto err_args_free;
+		}
+	}
+
 	rc_abt = ABT_init(0, NULL);
 	if (rc_abt != ABT_SUCCESS) {
 		rc = dss_abterr2der(rc_abt);
@@ -78,6 +85,10 @@ main(int argc, char *argv[])
 err_abt_fini:
 	(void)ABT_finalize();
 err_args_free:
+	if (ctrl.common.verbose) {
+		daos_debug_fini();
+	}
+
 	dlck_args_free(&ctrl);
 	(void)d_fault_inject_fini();