76 	    "    feature stat <pool>\n"  in usage()
78 	    "    feature enable [-r] [-d desc] <pool> <feature>\n"  in usage()
79 	    "        add a new enabled feature to the pool\n"  in usage()
80 	    "        -d <desc> sets the feature's description\n"  in usage()
81 	    "        -r set read-only compatible flag for feature\n"  in usage()
82 	    "    feature ref [-md] <pool> <feature>\n"  in usage()
83 	    "        change the refcount on the given feature\n"  in usage()
85 	    "        -m add the feature to the label if increasing refcount\n"  in usage()
87 	    "    <feature> : should be a feature guid\n"  in usage()
276 	zfeature_info_t *feature = arg;  in zhack_feature_enable_sync()  local
278 	feature_enable_sync(spa, feature, tx);  in zhack_feature_enable_sync()
280 	spa_history_log_internal(spa, "zhack enable feature", tx,  in zhack_feature_enable_sync()
282 	    feature->fi_guid, feature->fi_flags);  in zhack_feature_enable_sync()
292 	zfeature_info_t feature;  in zhack_do_feature_enable()  local
300 	feature.fi_uname = "zhack";  in zhack_do_feature_enable()
301 	feature.fi_flags = 0;  in zhack_do_feature_enable()
302 	feature.fi_depends = nodeps;  in zhack_do_feature_enable()
303 	feature.fi_feature = SPA_FEATURE_NONE;  in zhack_do_feature_enable()
309 			feature.fi_flags |= ZFEATURE_FLAG_READONLY_COMPAT;  in zhack_do_feature_enable()
324 	feature.fi_desc = desc;  in zhack_do_feature_enable()
330 		(void) fprintf(stderr, "error: missing feature or pool name\n");  in zhack_do_feature_enable()
334 	feature.fi_guid = argv[1];  in zhack_do_feature_enable()
336 	if (!zfeature_is_valid_guid(feature.fi_guid))  in zhack_do_feature_enable()
337 		fatal(NULL, FTAG, "invalid feature guid: %s", feature.fi_guid);  in zhack_do_feature_enable()
342 	if (zfeature_is_supported(feature.fi_guid))  in zhack_do_feature_enable()
343 		fatal(spa, FTAG, "'%s' is a real feature, will not enable",  in zhack_do_feature_enable()
344 		    feature.fi_guid);  in zhack_do_feature_enable()
345 	if (0 == zap_contains(mos, spa->spa_feat_desc_obj, feature.fi_guid))  in zhack_do_feature_enable()
346 		fatal(spa, FTAG, "feature already enabled: %s",  in zhack_do_feature_enable()
347 		    feature.fi_guid);  in zhack_do_feature_enable()
350 	    zhack_feature_enable_sync, &feature, 5, ZFS_SPACE_CHECK_NORMAL));  in zhack_do_feature_enable()
361 	zfeature_info_t *feature = arg;  in feature_incr_sync()  local
364 	VERIFY0(feature_get_refcount_from_disk(spa, feature, &refcount));  in feature_incr_sync()
365 	feature_sync(spa, feature, refcount + 1, tx);  in feature_incr_sync()
366 	spa_history_log_internal(spa, "zhack feature incr", tx,  in feature_incr_sync()
367 	    "name=%s", feature->fi_guid);  in feature_incr_sync()
374 	zfeature_info_t *feature = arg;  in feature_decr_sync()  local
377 	VERIFY0(feature_get_refcount_from_disk(spa, feature, &refcount));  in feature_decr_sync()
378 	feature_sync(spa, feature, refcount - 1, tx);  in feature_decr_sync()
379 	spa_history_log_internal(spa, "zhack feature decr", tx,  in feature_decr_sync()
380 	    "name=%s", feature->fi_guid);  in feature_decr_sync()
391 	zfeature_info_t feature;  in zhack_do_feature_ref()  local
396 	 * when the feature was enabled, but we need to properly set the  in zhack_do_feature_ref()
397 	 * feature for read or write based on the information we read off  in zhack_do_feature_ref()
400 	feature.fi_uname = "zhack";  in zhack_do_feature_ref()
401 	feature.fi_flags = 0;  in zhack_do_feature_ref()
402 	feature.fi_desc = NULL;  in zhack_do_feature_ref()
403 	feature.fi_depends = nodeps;  in zhack_do_feature_ref()
404 	feature.fi_feature = SPA_FEATURE_NONE;  in zhack_do_feature_ref()
410 			feature.fi_flags |= ZFEATURE_FLAG_MOS;  in zhack_do_feature_ref()
424 		(void) fprintf(stderr, "error: missing feature or pool name\n");  in zhack_do_feature_ref()
428 	feature.fi_guid = argv[1];  in zhack_do_feature_ref()
430 	if (!zfeature_is_valid_guid(feature.fi_guid))  in zhack_do_feature_ref()
431 		fatal(NULL, FTAG, "invalid feature guid: %s", feature.fi_guid);  in zhack_do_feature_ref()
436 	if (zfeature_is_supported(feature.fi_guid)) {  in zhack_do_feature_ref()
438 		    "'%s' is a real feature, will not change refcount",  in zhack_do_feature_ref()
439 		    feature.fi_guid);  in zhack_do_feature_ref()
443 	    feature.fi_guid)) {  in zhack_do_feature_ref()
444 		feature.fi_flags &= ~ZFEATURE_FLAG_READONLY_COMPAT;  in zhack_do_feature_ref()
446 	    feature.fi_guid)) {  in zhack_do_feature_ref()
447 		feature.fi_flags |= ZFEATURE_FLAG_READONLY_COMPAT;  in zhack_do_feature_ref()
449 		fatal(spa, FTAG, "feature is not enabled: %s", feature.fi_guid);  in zhack_do_feature_ref()
454 		if (feature_get_refcount_from_disk(spa, &feature,  in zhack_do_feature_ref()
456 			fatal(spa, FTAG, "feature refcount already 0: %s",  in zhack_do_feature_ref()
457 			    feature.fi_guid);  in zhack_do_feature_ref()
462 	    decr ? feature_decr_sync : feature_incr_sync, &feature,  in zhack_do_feature_ref()
477 		    "error: no feature operation specified\n");  in zhack_do_feature()
1008 	if (strcmp(subcommand, "feature") == 0) {  in main()