netapp plugin: Print a notice if all WAFL values have been disabled.
[collectd.git] / src / netapp.c
index e247e83..c2ebc9f 100644 (file)
@@ -51,18 +51,20 @@ typedef struct cna_interval_s cna_interval_t;
 #define CFG_SYSTEM_ALL  0x0F
 typedef struct {
        uint32_t flags;
+       cna_interval_t interval;
+       na_elem_t *query;
 } cfg_system_t;
 
 /*!
  * \brief Persistent data for WAFL performance counters. (a.k.a. cache performance)
  *
  * The cache counters use old counter values to calculate a hit ratio for each
- * counter. The "data_wafl_t" struct therefore contains old counter values
- * along with flags, which are set if the counter is valid.
+ * counter. The "cfg_wafl_t" struct therefore contains old counter values along
+ * with flags, which are set if the counter is valid.
  *
- * The function "query_wafl_data" will fill a new structure of this kind with
- * new values, then pass both, new and old data, to "submit_wafl_data". That
- * function calculates the hit ratios, submits the calculated values and
+ * The function "cna_handle_wafl_data" will fill a new structure of this kind
+ * with new values, then pass both, new and old data, to "submit_wafl_data".
+ * That function calculates the hit ratios, submits the calculated values and
  * updates the old counter values for the next iteration.
  */
 #define CFG_WAFL_NAME_CACHE        0x0001
@@ -85,6 +87,9 @@ typedef struct {
 #define HAVE_WAFL_ALL              0xff00
 typedef struct {
        uint32_t flags;
+       cna_interval_t interval;
+       na_elem_t *query;
+
        time_t timestamp;
        uint64_t name_cache_hit;
        uint64_t name_cache_miss;
@@ -94,7 +99,7 @@ typedef struct {
        uint64_t buf_hash_miss;
        uint64_t inode_cache_hit;
        uint64_t inode_cache_miss;
-} data_wafl_t;
+} cfg_wafl_t;
 
 /*!
  * \brief Persistent data for volume performance data.
@@ -217,6 +222,8 @@ struct host_config_s {
        na_server_t *srv;
        cfg_service_t *services;
        cfg_disk_t *cfg_disk;
+       cfg_wafl_t *cfg_wafl;
+       cfg_system_t *cfg_system;
        volume_t *volumes;
 
        struct host_config_s *next;
@@ -256,6 +263,17 @@ static void free_disk (disk_t *disk) /* {{{ */
        free_disk (next);
 } /* }}} void free_disk */
 
+static void free_cfg_wafl (cfg_wafl_t *cw) /* {{{ */
+{
+       if (cw == NULL)
+               return;
+
+       if (cw->query != NULL)
+               na_elem_free (cw->query);
+
+       sfree (cw);
+} /* }}} void free_cfg_wafl */
+
 static void free_cfg_disk (cfg_disk_t *cfg_disk) /* {{{ */
 {
        if (cfg_disk == NULL)
@@ -298,6 +316,7 @@ static void free_host_config (host_config_t *hc) /* {{{ */
 
        free_cfg_service (hc->services);
        free_cfg_disk (hc->cfg_disk);
+       free_cfg_wafl (hc->cfg_wafl);
        free_volume (hc->volumes);
 
        sfree (hc);
@@ -527,34 +546,34 @@ static int submit_cache_ratio (const char *host, /* {{{ */
 } /* }}} int submit_cache_ratio */
 
 /* Submits all the caches used by WAFL. Uses "submit_cache_ratio". */
-static int submit_wafl_data (const host_config_t *host, const char *instance, /* {{{ */
-               data_wafl_t *old_data, const data_wafl_t *new_data)
+static int submit_wafl_data (const char *hostname, const char *instance, /* {{{ */
+               cfg_wafl_t *old_data, const cfg_wafl_t *new_data)
 {
        /* Submit requested counters */
        if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_NAME_CACHE | HAVE_WAFL_NAME_CACHE)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_NAME_CACHE))
-               submit_cache_ratio (host->name, instance, "name_cache_hit",
+               submit_cache_ratio (hostname, instance, "name_cache_hit",
                                new_data->name_cache_hit, new_data->name_cache_miss,
                                old_data->name_cache_hit, old_data->name_cache_miss,
                                new_data->timestamp);
 
        if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_DIR_CACHE | HAVE_WAFL_FIND_DIR)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_FIND_DIR))
-               submit_cache_ratio (host->name, instance, "find_dir_hit",
+               submit_cache_ratio (hostname, instance, "find_dir_hit",
                                new_data->find_dir_hit, new_data->find_dir_miss,
                                old_data->find_dir_hit, old_data->find_dir_miss,
                                new_data->timestamp);
 
        if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_BUF_CACHE | HAVE_WAFL_BUF_HASH)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_BUF_HASH))
-               submit_cache_ratio (host->name, instance, "buf_hash_hit",
+               submit_cache_ratio (hostname, instance, "buf_hash_hit",
                                new_data->buf_hash_hit, new_data->buf_hash_miss,
                                old_data->buf_hash_hit, old_data->buf_hash_miss,
                                new_data->timestamp);
 
        if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_INODE_CACHE | HAVE_WAFL_INODE_CACHE)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_INODE_CACHE))
-               submit_cache_ratio (host->name, instance, "inode_cache_hit",
+               submit_cache_ratio (hostname, instance, "inode_cache_hit",
                                new_data->inode_cache_hit, new_data->inode_cache_miss,
                                old_data->inode_cache_hit, old_data->inode_cache_miss,
                                new_data->timestamp);
@@ -669,28 +688,43 @@ static int submit_volume_perf_data (const host_config_t *host, /* {{{ */
  * These functions are called with appropriate data returned by the libnetapp
  * interface which is parsed and submitted with the above functions.
  */
-/* Data corresponding to <GetWaflPerfData /> */
-static void query_wafl_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
-       data_wafl_t *wafl = data;
-       data_wafl_t perf_data;
+/* Data corresponding to <WAFL /> */
+static int cna_handle_wafl_data (const char *hostname, cfg_wafl_t *cfg_wafl, /* {{{ */
+               na_elem_t *data)
+{
+       cfg_wafl_t perf_data;
        const char *plugin_inst;
+
+       na_elem_t *instances;
        na_elem_t *counter;
+       na_elem_iter_t counter_iter;
 
        memset (&perf_data, 0, sizeof (perf_data));
        
-       perf_data.timestamp = (time_t) na_child_get_uint64(out, "timestamp", 0);
+       perf_data.timestamp = (time_t) na_child_get_uint64 (data, "timestamp", 0);
 
-       out = na_elem_child(na_elem_child(out, "instances"), "instance-data");
-       if (out == NULL)
-               return;
+       instances = na_elem_child(na_elem_child (data, "instances"), "instance-data");
+       if (instances == NULL)
+       {
+               ERROR ("netapp plugin: cna_handle_wafl_data: "
+                               "na_elem_child (\"instances\") failed.");
+               return (-1);
+       }
 
-       plugin_inst = na_child_get_string(out, "name");
+       plugin_inst = na_child_get_string(instances, "name");
        if (plugin_inst == NULL)
-               return;
+       {
+               ERROR ("netapp plugin: cna_handle_wafl_data: "
+                               "na_child_get_string (\"name\") failed.");
+               return (-1);
+       }
 
        /* Iterate over all counters */
-       na_elem_iter_t iter = na_child_iterator(na_elem_child(out, "counters"));
-       for (counter = na_iterator_next(&iter); counter; counter = na_iterator_next(&iter)) {
+       counter_iter = na_child_iterator (na_elem_child (instances, "counters"));
+       for (counter = na_iterator_next (&counter_iter);
+                       counter != NULL;
+                       counter = na_iterator_next (&counter_iter))
+       {
                const char *name;
                uint64_t value;
 
@@ -727,13 +761,93 @@ static void query_wafl_data(host_config_t *host, na_elem_t *out, void *data) { /
                        perf_data.inode_cache_miss = value;
                        perf_data.flags |= HAVE_WAFL_INODE_CACHE_MISS;
                } else {
-                       DEBUG("netapp plugin: query_wafl_data: Found unexpected child: %s",
-                                       name);
+                       DEBUG("netapp plugin: cna_handle_wafl_data: "
+                                       "Found unexpected child: %s", name);
                }
        }
 
-       submit_wafl_data (host, plugin_inst, wafl, &perf_data);
-} /* }}} void query_wafl_data */
+       return (submit_wafl_data (hostname, plugin_inst, cfg_wafl, &perf_data));
+} /* }}} void cna_handle_wafl_data */
+
+static int cna_setup_wafl (cfg_wafl_t *cw) /* {{{ */
+{
+       na_elem_t *e;
+
+       if (cw == NULL)
+               return (EINVAL);
+
+       if (cw->query != NULL)
+               return (0);
+
+       cw->query = na_elem_new("perf-object-get-instances");
+       if (cw->query == NULL)
+       {
+               ERROR ("netapp plugin: na_elem_new failed.");
+               return (-1);
+       }
+       na_child_add_string (cw->query, "objectname", "wafl");
+
+       e = na_elem_new("counters");
+       if (e == NULL)
+       {
+               na_elem_free (cw->query);
+               cw->query = NULL;
+               ERROR ("netapp plugin: na_elem_new failed.");
+               return (-1);
+       }
+       na_child_add_string(e, "foo", "name_cache_hit");
+       na_child_add_string(e, "foo", "name_cache_miss");
+       na_child_add_string(e, "foo", "find_dir_hit");
+       na_child_add_string(e, "foo", "find_dir_miss");
+       na_child_add_string(e, "foo", "buf_hash_hit");
+       na_child_add_string(e, "foo", "buf_hash_miss");
+       na_child_add_string(e, "foo", "inode_cache_hit");
+       na_child_add_string(e, "foo", "inode_cache_miss");
+
+       na_child_add(cw->query, e);
+
+       return (0);
+} /* }}} int cna_setup_wafl */
+
+static int cna_query_wafl (host_config_t *host) /* {{{ */
+{
+       na_elem_t *data;
+       int status;
+       time_t now;
+
+       if (host == NULL)
+               return (EINVAL);
+
+       /* If WAFL was not configured, return without doing anything. */
+       if (host->cfg_wafl == NULL)
+               return (0);
+
+       now = time (NULL);
+       if ((host->cfg_wafl->interval.interval + host->cfg_wafl->interval.last_read) > now)
+               return (0);
+
+       status = cna_setup_wafl (host->cfg_wafl);
+       if (status != 0)
+               return (status);
+       assert (host->cfg_wafl->query != NULL);
+
+       data = na_server_invoke_elem(host->srv, host->cfg_wafl->query);
+       if (na_results_status (data) != NA_OK)
+       {
+               ERROR ("netapp plugin: cna_query_wafl: na_server_invoke_elem failed: %s",
+                               na_results_reason (data));
+               na_elem_free (data);
+               return (-1);
+       }
+
+       status = cna_handle_wafl_data (host->name, host->cfg_wafl, data);
+
+       if (status == 0)
+               host->cfg_wafl->interval.last_read = now;
+
+       na_elem_free (data);
+       return (status);
+} /* }}} int cna_query_wafl */
 
 /* Data corresponding to <Disks /> */
 static int cna_handle_disk_data (const char *hostname, /* {{{ */
@@ -897,6 +1011,8 @@ static int cna_query_disk (host_config_t *host) /* {{{ */
        if (host == NULL)
                return (EINVAL);
 
+       /* If the user did not configure disk statistics, return without doing
+        * anything. */
        if (host->cfg_disk == NULL)
                return (0);
 
@@ -1095,24 +1211,45 @@ static void query_volume_perf_data(host_config_t *host, na_elem_t *out, void *da
        } /* for (volume) */
 } /* }}} void query_volume_perf_data */
 
-/* Data corresponding to <GetSystemPerfData /> */
-static void collect_perf_system_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
+/* Data corresponding to <System /> */
+static int cna_handle_system_data (const char *hostname, /* {{{ */
+               cfg_system_t *cfg_system, na_elem_t *data)
+{
+       na_elem_t *instances;
+       na_elem_t *counter;
+       na_elem_iter_t counter_iter;
+
        counter_t disk_read = 0, disk_written = 0;
        counter_t net_recv = 0, net_sent = 0;
        counter_t cpu_busy = 0, cpu_total = 0;
-       unsigned int counter_flags = 0;
+       uint32_t counter_flags = 0;
 
-       cfg_system_t *cfg_system = data;
        const char *instance;
        time_t timestamp;
-       na_elem_t *counter;
        
-       timestamp = (time_t) na_child_get_uint64(out, "timestamp", 0);
-       out = na_elem_child(na_elem_child(out, "instances"), "instance-data");
-       instance = na_child_get_string(out, "name");
+       timestamp = (time_t) na_child_get_uint64 (data, "timestamp", 0);
 
-       na_elem_iter_t iter = na_child_iterator(na_elem_child(out, "counters"));
-       for (counter = na_iterator_next(&iter); counter; counter = na_iterator_next(&iter)) {
+       instances = na_elem_child(na_elem_child (data, "instances"), "instance-data");
+       if (instances == NULL)
+       {
+               ERROR ("netapp plugin: cna_handle_system_data: "
+                               "na_elem_child (\"instances\") failed.");
+               return (-1);
+       }
+
+       instance = na_child_get_string (instances, "name");
+       if (instance == NULL)
+       {
+               ERROR ("netapp plugin: cna_handle_system_data: "
+                               "na_child_get_string (\"name\") failed.");
+               return (-1);
+       }
+
+       counter_iter = na_child_iterator (na_elem_child (instances, "counters"));
+       for (counter = na_iterator_next (&counter_iter);
+                       counter != NULL;
+                       counter = na_iterator_next (&counter_iter))
+       {
                const char *name;
                uint64_t value;
 
@@ -1145,29 +1282,91 @@ static void collect_perf_system_data(host_config_t *host, na_elem_t *out, void *
                } else if ((cfg_system->flags & CFG_SYSTEM_OPS)
                                && (value > 0) && (strlen(name) > 4)
                                && (!strcmp(name + strlen(name) - 4, "_ops"))) {
-                       submit_counter (host->name, instance, "disk_ops_complex", name,
+                       submit_counter (hostname, instance, "disk_ops_complex", name,
                                        (counter_t) value, timestamp);
                }
        } /* for (counter) */
 
        if ((cfg_system->flags & CFG_SYSTEM_DISK)
-                       && ((counter_flags & 0x03) == 0x03))
-               submit_two_counters (host->name, instance, "disk_octets", NULL,
+                       && (HAS_ALL_FLAGS (counter_flags, 0x01 | 0x02)))
+               submit_two_counters (hostname, instance, "disk_octets", NULL,
                                disk_read, disk_written, timestamp);
                                
        if ((cfg_system->flags & CFG_SYSTEM_NET)
-                       && ((counter_flags & 0x0c) == 0x0c))
-               submit_two_counters (host->name, instance, "if_octets", NULL,
+                       && (HAS_ALL_FLAGS (counter_flags, 0x04 | 0x08)))
+               submit_two_counters (hostname, instance, "if_octets", NULL,
                                net_recv, net_sent, timestamp);
 
        if ((cfg_system->flags & CFG_SYSTEM_CPU)
-                       && ((counter_flags & 0x30) == 0x30)) {
-               submit_counter (host->name, instance, "cpu", "system",
+                       && (HAS_ALL_FLAGS (counter_flags, 0x10 | 0x20)))
+       {
+               submit_counter (hostname, instance, "cpu", "system",
                                cpu_busy, timestamp);
-               submit_counter (host->name, instance, "cpu", "idle",
+               submit_counter (hostname, instance, "cpu", "idle",
                                cpu_total - cpu_busy, timestamp);
        }
-} /* }}} void collect_perf_system_data */
+
+       return (0);
+} /* }}} int cna_handle_system_data */
+
+static int cna_setup_system (cfg_system_t *cs) /* {{{ */
+{
+       if (cs == NULL)
+               return (EINVAL);
+
+       if (cs->query != NULL)
+               return (0);
+
+       cs->query = na_elem_new ("perf-object-get-instances");
+       if (cs->query == NULL)
+       {
+               ERROR ("netapp plugin: na_elem_new failed.");
+               return (-1);
+       }
+       na_child_add_string (cs->query, "objectname", "system");
+
+       return (0);
+} /* }}} int cna_setup_system */
+
+static int cna_query_system (host_config_t *host) /* {{{ */
+{
+       na_elem_t *data;
+       int status;
+       time_t now;
+
+       if (host == NULL)
+               return (EINVAL);
+
+       /* If system statistics were not configured, return without doing anything. */
+       if (host->cfg_system == NULL)
+               return (0);
+
+       now = time (NULL);
+       if ((host->cfg_system->interval.interval + host->cfg_system->interval.last_read) > now)
+               return (0);
+
+       status = cna_setup_system (host->cfg_system);
+       if (status != 0)
+               return (status);
+       assert (host->cfg_system->query != NULL);
+
+       data = na_server_invoke_elem(host->srv, host->cfg_system->query);
+       if (na_results_status (data) != NA_OK)
+       {
+               ERROR ("netapp plugin: cna_query_system: na_server_invoke_elem failed: %s",
+                               na_results_reason (data));
+               na_elem_free (data);
+               return (-1);
+       }
+
+       status = cna_handle_system_data (host->name, host->cfg_system, data);
+
+       if (status == 0)
+               host->cfg_system->interval.last_read = now;
+
+       na_elem_free (data);
+       return (status);
+} /* }}} int cna_query_system */
 
 /*
  * Configuration handling
@@ -1467,74 +1666,88 @@ static int cna_config_disk(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
        return (0);
 } /* }}} int cna_config_disk */
 
-/* Corresponds to a <GetWaflPerfData /> block */
-static void cna_config_wafl(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
+/* Corresponds to a <WAFL /> block */
+static int cna_config_wafl(host_config_t *host, oconfig_item_t *ci) /* {{{ */
+{
+       cfg_wafl_t *cfg_wafl;
        int i;
-       cfg_service_t *service;
-       data_wafl_t *perf_wafl;
-       
-       service = malloc(sizeof(*service));
-       if (service == NULL)
-               return;
-       memset (service, 0, sizeof (*service));
 
-       service->query = 0;
-       service->handler = query_wafl_data;
-       perf_wafl = service->data = malloc(sizeof(*perf_wafl));
-       perf_wafl->flags = CFG_WAFL_ALL;
+       if ((host == NULL) || (ci == NULL))
+               return (EINVAL);
+
+       if (host->cfg_wafl == NULL)
+       {
+               cfg_wafl = malloc (sizeof (*cfg_wafl));
+               if (cfg_wafl == NULL)
+                       return (ENOMEM);
+               memset (cfg_wafl, 0, sizeof (*cfg_wafl));
+
+               /* Set default flags */
+               cfg_wafl->flags = CFG_WAFL_ALL;
+
+               host->cfg_wafl = cfg_wafl;
+       }
+       cfg_wafl = host->cfg_wafl;
 
        for (i = 0; i < ci->children_num; ++i) {
                oconfig_item_t *item = ci->children + i;
                
-               if (!strcasecmp(item->key, "Multiplier")) {
-                       cna_config_get_multiplier (item, service);
-               } else if (!strcasecmp(item->key, "GetNameCache")) {
-                       cna_config_bool_to_flag (item, &perf_wafl->flags, CFG_WAFL_NAME_CACHE);
-               } else if (!strcasecmp(item->key, "GetDirCache")) {
-                       cna_config_bool_to_flag (item, &perf_wafl->flags, CFG_WAFL_DIR_CACHE);
-               } else if (!strcasecmp(item->key, "GetBufCache")) {
-                       cna_config_bool_to_flag (item, &perf_wafl->flags, CFG_WAFL_BUF_CACHE);
-               } else if (!strcasecmp(item->key, "GetInodeCache")) {
-                       cna_config_bool_to_flag (item, &perf_wafl->flags, CFG_WAFL_INODE_CACHE);
-               } else {
+               if (strcasecmp(item->key, "Interval") == 0)
+                       cna_config_get_interval (item, &cfg_wafl->interval);
+               else if (!strcasecmp(item->key, "GetNameCache"))
+                       cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_NAME_CACHE);
+               else if (!strcasecmp(item->key, "GetDirCache"))
+                       cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_DIR_CACHE);
+               else if (!strcasecmp(item->key, "GetBufferCache"))
+                       cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_BUF_CACHE);
+               else if (!strcasecmp(item->key, "GetInodeCache"))
+                       cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_INODE_CACHE);
+               else
                        WARNING ("netapp plugin: The %s config option is not allowed within "
-                                       "`GetWaflPerfData' blocks.", item->key);
-               }
+                                       "`WAFL' blocks.", item->key);
        }
 
-       service->next = host->services;
-       host->services = service;
-} /* }}} void cna_config_wafl */
+       if ((cfg_wafl->flags & CFG_WAFL_ALL) == 0)
+       {
+               NOTICE ("netapp plugin: All WAFL related values have been disabled. "
+                               "Collection of WAFL data will be disabled entirely.");
+               free_cfg_wafl (host->cfg_wafl);
+               host->cfg_wafl = NULL;
+       }
+
+       return (0);
+} /* }}} int cna_config_wafl */
 
-/* Corresponds to a <GetSystemPerfData /> block */
+/* Corresponds to a <System /> block */
 static int cna_config_system (host_config_t *host, /* {{{ */
                oconfig_item_t *ci, const cfg_service_t *default_service)
 {
-       int i;
-       cfg_service_t *service;
        cfg_system_t *cfg_system;
+       int i;
        
-       service = malloc(sizeof(*service));
-       if (service == NULL)
-               return (-1);
-       memset (service, 0, sizeof (*service));
-       *service = *default_service;
-       service->handler = collect_perf_system_data;
+       if ((host == NULL) || (ci == NULL))
+               return (EINVAL);
 
-       cfg_system = malloc(sizeof(*cfg_system));
-       if (cfg_system == NULL) {
-               sfree (service);
-               return (-1);
+       if (host->cfg_system == NULL)
+       {
+               cfg_system = malloc (sizeof (*cfg_system));
+               if (cfg_system == NULL)
+                       return (ENOMEM);
+               memset (cfg_system, 0, sizeof (*cfg_system));
+
+               /* Set default flags */
+               cfg_system->flags = CFG_SYSTEM_ALL;
+               cfg_system->query = NULL;
+
+               host->cfg_system = cfg_system;
        }
-       memset (cfg_system, 0, sizeof (*cfg_system));
-       cfg_system->flags = CFG_SYSTEM_ALL;
-       service->data = cfg_system;
+       cfg_system = host->cfg_system;
 
        for (i = 0; i < ci->children_num; ++i) {
                oconfig_item_t *item = ci->children + i;
 
-               if (!strcasecmp(item->key, "Multiplier")) {
-                       cna_config_get_multiplier (item, service);
+               if (strcasecmp(item->key, "Interval") == 0) {
+                       cna_config_get_interval (item, &cfg_system->interval);
                } else if (!strcasecmp(item->key, "GetCPULoad")) {
                        cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_CPU);
                } else if (!strcasecmp(item->key, "GetInterfaces")) {
@@ -1545,13 +1758,10 @@ static int cna_config_system (host_config_t *host, /* {{{ */
                        cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_DISK);
                } else {
                        WARNING ("netapp plugin: The %s config option is not allowed within "
-                                       "`GetSystemPerfData' blocks.", item->key);
+                                       "`System' blocks.", item->key);
                }
        }
 
-       service->next = host->services;
-       host->services = service;
-
        return (0);
 } /* }}} int cna_config_system */
 
@@ -1612,9 +1822,9 @@ static host_config_t *cna_config_host (const oconfig_item_t *ci, /* {{{ */
                        host->interval = item->values[0].value.number;
                } else if (!strcasecmp(item->key, "GetVolumePerfData")) {
                        cna_config_volume_performance(host, item);
-               } else if (!strcasecmp(item->key, "GetSystemPerfData")) {
+               } else if (!strcasecmp(item->key, "System")) {
                        cna_config_system(host, item, &default_service);
-               } else if (!strcasecmp(item->key, "GetWaflPerfData")) {
+               } else if (!strcasecmp(item->key, "WAFL")) {
                        cna_config_wafl(host, item);
                } else if (!strcasecmp(item->key, "Disks")) {
                        cna_config_disk(host, item);
@@ -1698,10 +1908,7 @@ static int cna_init(void) { /* {{{ */
                for (service = host->services; service; service = service->next) {
                        service->interval = host->interval * service->multiplier;
 
-                       if (service->handler == collect_perf_system_data) {
-                               service->query = na_elem_new("perf-object-get-instances");
-                               na_child_add_string(service->query, "objectname", "system");
-                       } else if (service->handler == query_volume_perf_data) {
+                       if (service->handler == query_volume_perf_data) {
                                service->query = na_elem_new("perf-object-get-instances");
                                na_child_add_string(service->query, "objectname", "volume");
                                e = na_elem_new("counters");
@@ -1714,21 +1921,6 @@ static int cna_init(void) { /* {{{ */
                                na_child_add_string(e, "foo", "read_latency");
                                na_child_add_string(e, "foo", "write_latency");
                                na_child_add(service->query, e);
-                       } else if (service->handler == query_wafl_data) {
-                               service->query = na_elem_new("perf-object-get-instances");
-                               na_child_add_string(service->query, "objectname", "wafl");
-                               e = na_elem_new("counters");
-                               na_child_add_string(e, "foo", "name_cache_hit");
-                               na_child_add_string(e, "foo", "name_cache_miss");
-                               na_child_add_string(e, "foo", "find_dir_hit");
-                               na_child_add_string(e, "foo", "find_dir_miss");
-                               na_child_add_string(e, "foo", "buf_hash_hit");
-                               na_child_add_string(e, "foo", "buf_hash_miss");
-                               na_child_add_string(e, "foo", "inode_cache_hit");
-                               na_child_add_string(e, "foo", "inode_cache_miss");
-                               /* na_child_add_string(e, "foo", "inode_eject_time"); */
-                               /* na_child_add_string(e, "foo", "buf_eject_time"); */
-                               na_child_add(service->query, e);
                        } else if (service->handler == collect_volume_data) {
                                service->query = na_elem_new("volume-list-info");
                                /* na_child_add_string(service->query, "objectname", "volume"); */
@@ -1804,7 +1996,9 @@ static int cna_read(void) { /* {{{ */
                        na_elem_free(out);
                } /* for (host->services) */
 
+               cna_query_wafl (host);
                cna_query_disk (host);
+               cna_query_system (host);
        }
        return 0;
 } /* }}} int cna_read */