netapp plugin: Changed some type names.
authorFlorian Forster <octo@leeloo.lan.home.verplant.org>
Thu, 24 Sep 2009 12:03:53 +0000 (14:03 +0200)
committerFlorian Forster <octo@leeloo.lan.home.verplant.org>
Thu, 24 Sep 2009 12:03:53 +0000 (14:03 +0200)
The structure is roughly like this: Structs that only hold flags to tell
the functions what data to submit are prefixed with "cfg_". Structs that
hold old values for counters are prefixed with "data_".

The "disk_t" type now included flags, too, to indicate valid / invalid
values. The "query_submit_disk_data" function has been changed to honor
those flags.

Various "volume_data" stuff has been renamed to "volume_usage" to make
it more distinguishable from "volume_performance".

Various defines are now also prefixed with "CFG_" to show which flags
are used for configuration and which are used do mark counters valid.
The latter use the "HAVE_" prefix.

src/netapp.c

index edae48a..d04be5c 100644 (file)
 typedef struct host_config_s host_config_t;
 typedef void service_handler_t(host_config_t *host, na_elem_t *result, void *data);
 
-#define PERF_SYSTEM_CPU            0x01
-#define PERF_SYSTEM_NET            0x02
-#define PERF_SYSTEM_OPS            0x04
-#define PERF_SYSTEM_DISK           0x08
-#define PERF_SYSTEM_ALL            0x0F
-
 /*!
- * \brief Persistent data for system performence counters
+ * \brief Persistent data for system performance counters
  */
-
+#define CFG_SYSTEM_CPU  0x01
+#define CFG_SYSTEM_NET  0x02
+#define CFG_SYSTEM_OPS  0x04
+#define CFG_SYSTEM_DISK 0x08
+#define CFG_SYSTEM_ALL  0x0F
 typedef struct {
        uint32_t flags;
-} perf_system_data_t;
+} cfg_system_t;
 
 /*!
- * \brief Persistent data for WAFL performence counters. (a.k.a. cache performence)
+ * \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.
+ *
+ * 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
+ * updates the old counter values for the next iteration.
  */
-
-#define CFG_WAFL_NAME_CACHE       0x01
-#define CFG_WAFL_DIR_CACHE        0x02
-#define CFG_WAFL_BUF_CACHE        0x04
-#define CFG_WAFL_INODE_CACHE      0x08
-#define CFG_WAFL_ALL              0x0F
-
+#define CFG_WAFL_NAME_CACHE        0x0001
+#define CFG_WAFL_DIR_CACHE         0x0002
+#define CFG_WAFL_BUF_CACHE         0x0004
+#define CFG_WAFL_INODE_CACHE       0x0008
+#define CFG_WAFL_ALL               0x000F
 #define HAVE_WAFL_NAME_CACHE_HIT   0x0100
 #define HAVE_WAFL_NAME_CACHE_MISS  0x0200
 #define HAVE_WAFL_NAME_CACHE       (HAVE_WAFL_NAME_CACHE_HIT | HAVE_WAFL_NAME_CACHE_MISS)
@@ -71,7 +76,6 @@ typedef struct {
 #define HAVE_WAFL_INODE_CACHE_MISS 0x8000
 #define HAVE_WAFL_INODE_CACHE      (HAVE_WAFL_INODE_CACHE_HIT | HAVE_WAFL_INODE_CACHE_MISS)
 #define HAVE_WAFL_ALL              0xff00
-
 typedef struct {
        uint32_t flags;
        time_t timestamp;
@@ -83,29 +87,27 @@ typedef struct {
        uint64_t buf_hash_miss;
        uint64_t inode_cache_hit;
        uint64_t inode_cache_miss;
-} perf_wafl_data_t;
+} data_wafl_t;
 
+/*!
+ * \brief Persistent data for volume performance data.
+ *
+ * The code below uses the difference of the operations and latency counters to
+ * calculate an average per-operation latency. For this, old counters need to
+ * be stored in the "data_volume_perf_t" structure. The byte-counters are just
+ * kept for completeness sake. The "flags" member indicates if each counter is
+ * valid or not.
+ *
+ * The "query_volume_perf_data" function will fill a new struct of this type
+ * and pass both, old and new data, to "submit_volume_perf_data". In that
+ * function, the per-operation latency is calculated and dispatched, then the
+ * old counters are updated.
+ */
 #define CFG_VOLUME_PERF_INIT           0x0001
 #define CFG_VOLUME_PERF_IO             0x0002
 #define CFG_VOLUME_PERF_OPS            0x0003
 #define CFG_VOLUME_PERF_LATENCY        0x0008
 #define CFG_VOLUME_PERF_ALL            0x000F
-
-typedef struct {
-       uint32_t flags;
-} cfg_volume_perf_t;
-
-typedef struct {
-       uint32_t flags;
-} cfg_volume_data_t;
-
-#define PERF_DISK_BUSIEST          0x01
-#define PERF_DISK_ALL              0x01
-
-typedef struct {
-       uint32_t flags;
-} perf_disk_data_t;
-
 #define HAVE_VOLUME_PERF_BYTES_READ    0x0010
 #define HAVE_VOLUME_PERF_BYTES_WRITE   0x0020
 #define HAVE_VOLUME_PERF_OPS_READ      0x0040
@@ -115,6 +117,10 @@ typedef struct {
 #define HAVE_VOLUME_PERF_ALL           0x03F0
 typedef struct {
        uint32_t flags;
+} cfg_volume_perf_t;
+
+typedef struct {
+       uint32_t flags;
        time_t timestamp;
        uint64_t read_bytes;
        uint64_t write_bytes;
@@ -122,22 +128,17 @@ typedef struct {
        uint64_t write_ops;
        uint64_t read_latency;
        uint64_t write_latency;
-} per_volume_perf_data_t;
+} data_volume_perf_t;
 
+/*!
+ * \brief Configuration struct for volume usage data (free / used).
+ */
 #define VOLUME_INIT           0x01
 #define VOLUME_DF             0x02
 #define VOLUME_SNAP           0x04
-
 typedef struct {
        uint32_t flags;
-} per_volume_data_t;
-
-typedef struct {
-       time_t last_update;
-       double last_disk_busy_percent;
-       uint64_t last_disk_busy;
-       uint64_t last_base_for_disk_busy;
-} per_disk_perf_data_t;
+} cfg_volume_usage_t;
 
 typedef struct service_config_s {
        na_elem_t *query;
@@ -147,32 +148,51 @@ typedef struct service_config_s {
        int interval;
        void *data;
        struct service_config_s *next;
-} service_config_t;
-
+} cfg_service_t;
 #define SERVICE_INIT {0, 0, 1, 1, 0, 0, 0}
 
+/*!
+ * \brief Struct representing a volume.
+ *
+ * A volume currently has a name and two sets of values:
+ *
+ *  - Performance data, such as bytes read/written, number of operations
+ *    performed and average time per operation.
+ *
+ *  - Usage data, i. e. amount of used and free space in the volume.
+ */
 typedef struct volume_s {
        char *name;
-       per_volume_perf_data_t perf_data;
-       per_volume_data_t volume_data;
+       data_volume_perf_t perf_data;
+       cfg_volume_usage_t cfg_volume_usage;
        struct volume_s *next;
 } volume_t;
 
+#define CFG_DISK_BUSIEST 0x01
+#define CFG_DISK_ALL     0x01
+#define HAVE_DISK_BUSY   0x10
+#define HAVE_DISK_BASE   0x20
+#define HAVE_DISK_ALL    0x30
+typedef struct {
+       uint32_t flags;
+} cfg_disk_t;
+
 /*!
- * \brief A disk in the netapp.
+ * \brief A disk in the NetApp.
  *
- * A disk doesn't have any more information than its name atm.
+ * A disk doesn't have any more information than its name at the moment.
  * The name includes the "disk_" prefix.
  */
-
 typedef struct disk_s {
        char *name;
-       per_disk_perf_data_t perf_data;
+       uint32_t flags;
+       time_t timestamp;
+       uint64_t disk_busy;
+       uint64_t base_for_disk_busy;
+       double disk_busy_percent;
        struct disk_s *next;
 } disk_t;
 
-#define DISK_INIT {0, {0, 0, 0, 0}, 0}
-
 struct host_config_s {
        na_server_t *srv;
        char *name;
@@ -182,18 +202,17 @@ struct host_config_s {
        char *username;
        char *password;
        int interval;
-       service_config_t *services;
+       cfg_service_t *services;
        disk_t *disks;
        volume_t *volumes;
        struct host_config_s *next;
 };
-
-#define HOST_INIT {0, 0, NA_SERVER_TRANSPORT_HTTPS, 0, 0, 0, 0, 10, 0, 0, 0}
+#define HOST_INIT {NULL, NULL, NA_SERVER_TRANSPORT_HTTPS, NULL, 0, NULL, NULL, 10, NULL, NULL, NULL, NULL}
 
 static host_config_t *host_config;
 
 static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
-               uint32_t vol_data_flags, uint32_t vol_perf_flags)
+               uint32_t vol_usage_flags, uint32_t vol_perf_flags)
 {
        volume_t *v;
 
@@ -201,8 +220,8 @@ static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
                return (NULL);
        
        /* Make sure the default flags include the init-bit. */
-       if (vol_data_flags != 0)
-               vol_data_flags |= VOLUME_INIT;
+       if (vol_usage_flags != 0)
+               vol_usage_flags |= VOLUME_INIT;
        if (vol_perf_flags != 0)
                vol_perf_flags |= CFG_VOLUME_PERF_INIT;
 
@@ -211,9 +230,9 @@ static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
                        continue;
 
                /* Check if the flags have been initialized. */
-               if (((v->volume_data.flags & VOLUME_INIT) == 0)
-                               && (vol_data_flags != 0))
-                       v->volume_data.flags = vol_data_flags;
+               if (((v->cfg_volume_usage.flags & VOLUME_INIT) == 0)
+                               && (vol_usage_flags != 0))
+                       v->cfg_volume_usage.flags = vol_usage_flags;
                if (((v->perf_data.flags & CFG_VOLUME_PERF_INIT) == 0)
                                && (vol_perf_flags != 0))
                        v->perf_data.flags = vol_perf_flags;
@@ -227,7 +246,7 @@ static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
                return (NULL);
        memset (v, 0, sizeof (*v));
 
-       v->volume_data.flags = vol_data_flags;
+       v->cfg_volume_usage.flags = vol_usage_flags;
        v->perf_data.flags = vol_perf_flags;
 
        v->name = strdup(name);
@@ -244,7 +263,7 @@ static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
 
 static disk_t *get_disk(host_config_t *host, const char *name) /* {{{ */
 {
-       disk_t *v, init = DISK_INIT;
+       disk_t *v;
 
        if (name == NULL)
                return (NULL);
@@ -256,8 +275,9 @@ static disk_t *get_disk(host_config_t *host, const char *name) /* {{{ */
        v = malloc(sizeof(*v));
        if (v == NULL)
                return (NULL);
+       memset (v, 0, sizeof (*v));
+       v->next = NULL;
 
-       *v = init;
        v->name = strdup(name);
        if (v->name == NULL) {
                sfree (v);
@@ -374,7 +394,7 @@ static int submit_cache_ratio (const char *host, /* {{{ */
 } /* }}} int submit_cache_ratio */
 
 static int submit_wafl_data (const host_config_t *host, const char *instance, /* {{{ */
-               perf_wafl_data_t *old_data, const perf_wafl_data_t *new_data)
+               data_wafl_t *old_data, const data_wafl_t *new_data)
 {
        /* Submit requested counters */
        if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_NAME_CACHE | HAVE_WAFL_NAME_CACHE)
@@ -427,7 +447,7 @@ static int submit_wafl_data (const host_config_t *host, const char *instance, /*
 
 static int submit_volume_perf_data (const host_config_t *host, /* {{{ */
                volume_t *volume,
-               const per_volume_perf_data_t *new_data)
+               const data_volume_perf_t *new_data)
 {
        /* Check for and submit disk-octet values */
        if (HAS_ALL_FLAGS (volume->perf_data.flags, CFG_VOLUME_PERF_IO)
@@ -508,8 +528,8 @@ static int submit_volume_perf_data (const host_config_t *host, /* {{{ */
 } /* }}} int submit_volume_perf_data */
 
 static void query_wafl_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
-       perf_wafl_data_t *wafl = data;
-       perf_wafl_data_t perf_data;
+       data_wafl_t *wafl = data;
+       data_wafl_t perf_data;
        const char *plugin_inst;
        na_elem_t *counter;
 
@@ -518,7 +538,12 @@ static void query_wafl_data(host_config_t *host, na_elem_t *out, void *data) { /
        perf_data.timestamp = (time_t) na_child_get_uint64(out, "timestamp", 0);
 
        out = na_elem_child(na_elem_child(out, "instances"), "instance-data");
+       if (out == NULL)
+               return;
+
        plugin_inst = na_child_get_string(out, "name");
+       if (plugin_inst == NULL)
+               return;
 
        /* Iterate over all counters */
        na_elem_iter_t iter = na_child_iterator(na_elem_child(out, "counters"));
@@ -559,19 +584,19 @@ 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: Found unexpected child: %s", name);
+                       DEBUG("netapp plugin: query_wafl_data: Found unexpected child: %s",
+                                       name);
                }
        }
 
        submit_wafl_data (host, plugin_inst, wafl, &perf_data);
 } /* }}} void query_wafl_data */
 
-static void collect_perf_disk_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
-       perf_disk_data_t *perf = data;
-       const char *name;
+static void query_submit_disk_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
+       cfg_disk_t *cfg_disk = data;
        time_t timestamp;
        na_elem_t *counter, *inst;
-       disk_t *disk, *worst_disk = 0;
+       disk_t *worst_disk = 0;
        
        timestamp = (time_t) na_child_get_uint64(out, "timestamp", 0);
        out = na_elem_child(out, "instances");
@@ -579,71 +604,87 @@ static void collect_perf_disk_data(host_config_t *host, na_elem_t *out, void *da
        /* Iterate over all children */
        na_elem_iter_t inst_iter = na_child_iterator(out);
        for (inst = na_iterator_next(&inst_iter); inst; inst = na_iterator_next(&inst_iter)) {
-               uint64_t disk_busy = 0;
-               uint64_t base_for_disk_busy = 0;
+               disk_t *old_data;
+               disk_t  new_data;
+
+               memset (&new_data, 0, sizeof (new_data));
+               new_data.timestamp = timestamp;
+               new_data.disk_busy_percent = NAN;
 
-               disk = get_disk(host, na_child_get_string(inst, "name"));
-               if (disk == NULL)
+               old_data = get_disk(host, na_child_get_string(inst, "name"));
+               if (old_data == NULL)
                        continue;
 
                /* Look for the "disk_busy" and "base_for_disk_busy" counters */
                na_elem_iter_t count_iter = na_child_iterator(na_elem_child(inst, "counters"));
                for (counter = na_iterator_next(&count_iter); counter; counter = na_iterator_next(&count_iter)) {
+                       const char *name;
+                       uint64_t value;
+
                        name = na_child_get_string(counter, "name");
                        if (name == NULL)
                                continue;
 
+                       value = na_child_get_uint64(counter, "value", UINT64_MAX);
+                       if (value == UINT64_MAX)
+                               continue;
+
                        if (strcmp(name, "disk_busy") == 0)
-                               disk_busy = na_child_get_uint64(counter, "value", UINT64_MAX);
+                       {
+                               new_data.disk_busy = value;
+                               new_data.flags |= HAVE_DISK_BUSY;
+                       }
                        else if (strcmp(name, "base_for_disk_busy") == 0)
-                               base_for_disk_busy = na_child_get_uint64(counter, "value", UINT64_MAX);
-               }
-
-               if ((disk_busy == UINT64_MAX) || (base_for_disk_busy == UINT64_MAX))
-               {
-                       disk->perf_data.last_disk_busy = 0;
-                       disk->perf_data.last_base_for_disk_busy = 0;
-                       continue;
+                       {
+                               new_data.base_for_disk_busy = value;
+                               new_data.flags |= HAVE_DISK_BASE;
+                       }
                }
 
-               disk->perf_data.last_update = timestamp;
-               if ((disk_busy >= disk->perf_data.last_disk_busy)
-                               && (base_for_disk_busy >= disk->perf_data.last_base_for_disk_busy))
+               /* If all required counters are available and did not just wrap around,
+                * calculate the busy percentage. Otherwise, the value is initialized to
+                * NAN at the top of the for-loop. */
+               if (HAS_ALL_FLAGS (old_data->flags, HAVE_DISK_BUSY | HAVE_DISK_BASE)
+                               && HAS_ALL_FLAGS (new_data.flags, HAVE_DISK_BUSY | HAVE_DISK_BASE)
+                               && (new_data.disk_busy >= old_data->disk_busy)
+                               && (new_data.base_for_disk_busy > old_data->base_for_disk_busy))
                {
-                       uint64_t disk_busy_diff;
+                       uint64_t busy_diff;
                        uint64_t base_diff;
 
-                       disk_busy_diff = disk_busy - disk->perf_data.last_disk_busy;
-                       base_diff = base_for_disk_busy - disk->perf_data.last_base_for_disk_busy;
+                       busy_diff = new_data.disk_busy - old_data->disk_busy;
+                       base_diff = new_data.base_for_disk_busy - old_data->base_for_disk_busy;
 
-                       if (base_diff == 0)
-                               disk->perf_data.last_disk_busy_percent = NAN;
-                       else
-                               disk->perf_data.last_disk_busy_percent = 100.0
-                                       * ((gauge_t) disk_busy_diff) / ((gauge_t) base_diff);
-               }
-               else
-               {
-                       disk->perf_data.last_disk_busy_percent = NAN;
+                       new_data.disk_busy_percent = 100.0
+                               * ((gauge_t) busy_diff) / ((gauge_t) base_diff);
                }
 
-               disk->perf_data.last_disk_busy = disk_busy;
-               disk->perf_data.last_base_for_disk_busy = base_for_disk_busy;
+               /* Clear HAVE_* flags */
+               old_data->flags &= ~HAVE_DISK_ALL;
+
+               /* Copy data */
+               old_data->timestamp = new_data.timestamp;
+               old_data->disk_busy = new_data.disk_busy;
+               old_data->base_for_disk_busy = new_data.base_for_disk_busy;
+               old_data->disk_busy_percent = new_data.disk_busy_percent;
+
+               /* Copy flags */
+               old_data->flags |= (new_data.flags & HAVE_DISK_ALL);
 
                if ((worst_disk == NULL)
-                               || (worst_disk->perf_data.last_disk_busy_percent < disk->perf_data.last_disk_busy_percent))
-                       worst_disk = disk;
-       }
+                               || (worst_disk->disk_busy_percent < old_data->disk_busy_percent))
+                       worst_disk = old_data;
+       } /* for (all disks) */
 
-       if ((perf->flags & PERF_DISK_BUSIEST) && (worst_disk != NULL))
+       if ((cfg_disk->flags & CFG_DISK_BUSIEST) && (worst_disk != NULL))
                submit_double (host->name, "system", "percent", "disk_busy",
-                               worst_disk->perf_data.last_disk_busy_percent, timestamp);
-} /* }}} void collect_perf_disk_data */
+                               worst_disk->disk_busy_percent, timestamp);
+} /* }}} void query_submit_disk_data */
 
 static void collect_volume_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
        na_elem_t *inst;
        volume_t *volume;
-       cfg_volume_data_t *cfg_volume_data = data;
+       cfg_volume_usage_t *cfg_volume_data = data;
 
        out = na_elem_child(out, "volumes");
        na_elem_iter_t inst_iter = na_child_iterator(out);
@@ -660,7 +701,7 @@ static void collect_volume_data(host_config_t *host, na_elem_t *out, void *data)
                if (volume == NULL)
                        continue;
 
-               if (!(volume->volume_data.flags & VOLUME_DF))
+               if (!(volume->cfg_volume_usage.flags & VOLUME_DF))
                        continue;
 
                /* 2^4 exa-bytes? This will take a while ;) */
@@ -743,7 +784,7 @@ static void collect_volume_data(host_config_t *host, na_elem_t *out, void *data)
 } /* }}} void collect_volume_data */
 
 static void query_volume_perf_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
-       cfg_volume_perf_t *perf = data;
+       cfg_volume_perf_t *cfg_volume_perf = data;
        time_t timestamp;
        na_elem_t *counter, *inst;
        
@@ -752,14 +793,14 @@ static void query_volume_perf_data(host_config_t *host, na_elem_t *out, void *da
        out = na_elem_child(out, "instances");
        na_elem_iter_t inst_iter = na_child_iterator(out);
        for (inst = na_iterator_next(&inst_iter); inst; inst = na_iterator_next(&inst_iter)) {
-               per_volume_perf_data_t perf_data;
+               data_volume_perf_t perf_data;
                volume_t *volume;
 
                memset (&perf_data, 0, sizeof (perf_data));
                perf_data.timestamp = timestamp;
 
                volume = get_volume(host, na_child_get_string(inst, "name"),
-                               /* data_flags = */ 0, perf->flags);
+                               /* data_flags = */ 0, cfg_volume_perf->flags);
                if (volume == NULL)
                        continue;
 
@@ -807,7 +848,7 @@ static void collect_perf_system_data(host_config_t *host, na_elem_t *out, void *
        counter_t cpu_busy = 0, cpu_total = 0;
        unsigned int counter_flags = 0;
 
-       perf_system_data_t *perf = data;
+       cfg_system_t *cfg_system = data;
        const char *instance;
        time_t timestamp;
        na_elem_t *counter;
@@ -847,7 +888,7 @@ static void collect_perf_system_data(host_config_t *host, na_elem_t *out, void *
                } else if (!strcmp(name, "cpu_elapsed_time")) {
                        cpu_total = (counter_t) value;
                        counter_flags |= 0x20;
-               } else if ((perf->flags & PERF_SYSTEM_OPS)
+               } else if ((cfg_system->flags & CFG_SYSTEM_OPS)
                                && (strlen(name) > 4)
                                && (!strcmp(name + strlen(name) - 4, "_ops"))) {
                        submit_counter (host->name, instance, "disk_ops_complex", name,
@@ -855,17 +896,17 @@ static void collect_perf_system_data(host_config_t *host, na_elem_t *out, void *
                }
        } /* for (counter) */
 
-       if ((perf->flags & PERF_SYSTEM_DISK)
+       if ((cfg_system->flags & CFG_SYSTEM_DISK)
                        && ((counter_flags & 0x03) == 0x03))
                submit_two_counters (host->name, instance, "disk_octets", NULL,
                                disk_read, disk_written, timestamp);
                                
-       if ((perf->flags & PERF_SYSTEM_NET)
+       if ((cfg_system->flags & CFG_SYSTEM_NET)
                        && ((counter_flags & 0x0c) == 0x0c))
                submit_two_counters (host->name, instance, "if_octets", NULL,
                                net_recv, net_sent, timestamp);
 
-       if ((perf->flags & PERF_SYSTEM_CPU)
+       if ((cfg_system->flags & CFG_SYSTEM_CPU)
                        && ((counter_flags & 0x30) == 0x30)) {
                submit_counter (host->name, instance, "cpu", "system",
                                cpu_busy, timestamp);
@@ -874,11 +915,11 @@ static void collect_perf_system_data(host_config_t *host, na_elem_t *out, void *
        }
 } /* }}} void collect_perf_system_data */
 
-static int config_init(void) { /* {{{ */
+static int cna_init(void) { /* {{{ */
        char err[256];
        na_elem_t *e;
        host_config_t *host;
-       service_config_t *service;
+       cfg_service_t *service;
        
        if (!host_config) {
                WARNING("netapp plugin: Plugin loaded but no hosts defined.");
@@ -934,7 +975,7 @@ static int config_init(void) { /* {{{ */
                                /* 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_perf_disk_data) {
+                       } else if (service->handler == query_submit_disk_data) {
                                service->query = na_elem_new("perf-object-get-instances");
                                na_child_add_string(service->query, "objectname", "disk");
                                e = na_elem_new("counters");
@@ -950,7 +991,7 @@ static int config_init(void) { /* {{{ */
                }
        }
        return 0;
-} /* }}} int config_init */
+} /* }}} int cna_init */
 
 static int config_bool_to_flag (const oconfig_item_t *ci, /* {{{ */
                uint32_t *flags, uint32_t flag)
@@ -974,7 +1015,7 @@ static int config_bool_to_flag (const oconfig_item_t *ci, /* {{{ */
 } /* }}} int config_bool_to_flag */
 
 static int config_get_multiplier (const oconfig_item_t *ci, /* {{{ */
-               service_config_t *service)
+               cfg_service_t *service)
 {
        int tmp;
 
@@ -1019,9 +1060,9 @@ static void set_global_vol_flag(const host_config_t *host, /* {{{ */
        
        for (v = host->volumes; v; v = v->next) {
                if (set)
-                       v->volume_data.flags |= flag;
+                       v->cfg_volume_usage.flags |= flag;
                else /* if (!set) */
-                       v->volume_data.flags &= ~flag;
+                       v->cfg_volume_usage.flags &= ~flag;
        }
 } /* }}} void set_global_vol_flag */
 
@@ -1073,7 +1114,7 @@ static void process_perf_volume_flag (host_config_t *host, /* {{{ */
 } /* }}} void process_perf_volume_flag */
 
 static void process_volume_flag (host_config_t *host, /* {{{ */
-               cfg_volume_data_t *cfg_volume_data, const oconfig_item_t *item, uint32_t flag)
+               cfg_volume_usage_t *cfg_volume_data, const oconfig_item_t *item, uint32_t flag)
 {
        int i;
        
@@ -1111,19 +1152,19 @@ static void process_volume_flag (host_config_t *host, /* {{{ */
                if (v == NULL)
                        continue;
 
-               if (!v->volume_data.flags)
-                       v->volume_data.flags = cfg_volume_data->flags;
+               if (!v->cfg_volume_usage.flags)
+                       v->cfg_volume_usage.flags = cfg_volume_data->flags;
 
                if (set)
-                       v->volume_data.flags |= flag;
+                       v->cfg_volume_usage.flags |= flag;
                else /* if (!set) */
-                       v->volume_data.flags &= ~flag;
+                       v->cfg_volume_usage.flags &= ~flag;
        }
 } /* }}} void process_volume_flag */
 
 static void build_perf_vol_config(host_config_t *host, const oconfig_item_t *ci) {
        int i, had_io = 0, had_ops = 0, had_latency = 0;
-       service_config_t *service;
+       cfg_service_t *service;
        cfg_volume_perf_t *perf_volume;
        
        service = malloc(sizeof(*service));
@@ -1166,8 +1207,8 @@ static void build_perf_vol_config(host_config_t *host, const oconfig_item_t *ci)
 
 static void build_volume_config(host_config_t *host, oconfig_item_t *ci) {
        int i, had_df = 0;
-       service_config_t *service;
-       cfg_volume_data_t *cfg_volume_data;
+       cfg_service_t *service;
+       cfg_volume_usage_t *cfg_volume_data;
        
        service = malloc(sizeof(*service));
        service->query = 0;
@@ -1195,14 +1236,14 @@ static void build_volume_config(host_config_t *host, oconfig_item_t *ci) {
 
 static void build_perf_disk_config(host_config_t *temp, oconfig_item_t *ci) {
        int i;
-       service_config_t *service;
-       perf_disk_data_t *perf_disk;
+       cfg_service_t *service;
+       cfg_disk_t *cfg_disk;
        
        service = malloc(sizeof(*service));
        service->query = 0;
-       service->handler = collect_perf_disk_data;
-       perf_disk = service->data = malloc(sizeof(*perf_disk));
-       perf_disk->flags = PERF_DISK_ALL;
+       service->handler = query_submit_disk_data;
+       cfg_disk = service->data = malloc(sizeof(*cfg_disk));
+       cfg_disk->flags = CFG_DISK_ALL;
        service->next = temp->services;
        temp->services = service;
        for (i = 0; i < ci->children_num; ++i) {
@@ -1212,15 +1253,15 @@ static void build_perf_disk_config(host_config_t *temp, oconfig_item_t *ci) {
                if (!strcasecmp(item->key, "Multiplier")) {
                        config_get_multiplier (item, service);
                } else if (!strcasecmp(item->key, "GetBusy")) {
-                       config_bool_to_flag (item, &perf_disk->flags, PERF_SYSTEM_CPU);
+                       config_bool_to_flag (item, &cfg_disk->flags, CFG_SYSTEM_CPU);
                }
        }
 }
 
 static void build_perf_wafl_config(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
        int i;
-       service_config_t *service;
-       perf_wafl_data_t *perf_wafl;
+       cfg_service_t *service;
+       data_wafl_t *perf_wafl;
        
        service = malloc(sizeof(*service));
        if (service == NULL)
@@ -1256,11 +1297,11 @@ static void build_perf_wafl_config(host_config_t *host, oconfig_item_t *ci) { /*
 } /* }}} void build_perf_wafl_config */
 
 static int build_perf_sys_config (host_config_t *host, /* {{{ */
-               oconfig_item_t *ci, const service_config_t *default_service)
+               oconfig_item_t *ci, const cfg_service_t *default_service)
 {
        int i;
-       service_config_t *service;
-       perf_system_data_t *perf_system;
+       cfg_service_t *service;
+       cfg_system_t *cfg_system;
        
        service = malloc(sizeof(*service));
        if (service == NULL)
@@ -1269,14 +1310,14 @@ static int build_perf_sys_config (host_config_t *host, /* {{{ */
        *service = *default_service;
        service->handler = collect_perf_system_data;
 
-       perf_system = malloc(sizeof(*perf_system));
-       if (perf_system == NULL) {
+       cfg_system = malloc(sizeof(*cfg_system));
+       if (cfg_system == NULL) {
                sfree (service);
                return (-1);
        }
-       memset (perf_system, 0, sizeof (*perf_system));
-       perf_system->flags = PERF_SYSTEM_ALL;
-       service->data = perf_system;
+       memset (cfg_system, 0, sizeof (*cfg_system));
+       cfg_system->flags = CFG_SYSTEM_ALL;
+       service->data = cfg_system;
 
        for (i = 0; i < ci->children_num; ++i) {
                oconfig_item_t *item = ci->children + i;
@@ -1284,13 +1325,13 @@ static int build_perf_sys_config (host_config_t *host, /* {{{ */
                if (!strcasecmp(item->key, "Multiplier")) {
                        config_get_multiplier (item, service);
                } else if (!strcasecmp(item->key, "GetCPULoad")) {
-                       config_bool_to_flag (item, &perf_system->flags, PERF_SYSTEM_CPU);
+                       config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_CPU);
                } else if (!strcasecmp(item->key, "GetInterfaces")) {
-                       config_bool_to_flag (item, &perf_system->flags, PERF_SYSTEM_NET);
+                       config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_NET);
                } else if (!strcasecmp(item->key, "GetDiskOps")) {
-                       config_bool_to_flag (item, &perf_system->flags, PERF_SYSTEM_OPS);
+                       config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_OPS);
                } else if (!strcasecmp(item->key, "GetDiskIO")) {
-                       config_bool_to_flag (item, &perf_system->flags, PERF_SYSTEM_DISK);
+                       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);
@@ -1303,11 +1344,11 @@ static int build_perf_sys_config (host_config_t *host, /* {{{ */
        return (0);
 } /* }}} int build_perf_sys_config */
 
-static host_config_t *build_host_config(const oconfig_item_t *ci, const host_config_t *default_host, const service_config_t *def_def_service) {
+static host_config_t *build_host_config(const oconfig_item_t *ci, const host_config_t *default_host, const cfg_service_t *def_def_service) {
        int i;
        oconfig_item_t *item;
        host_config_t *host, *hc, temp = *default_host;
-       service_config_t default_service = *def_def_service;
+       cfg_service_t default_service = *def_def_service;
        
        if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
                WARNING("netapp plugin: \"Host\" needs exactly one string argument. Ignoring host block.");
@@ -1388,11 +1429,11 @@ static host_config_t *build_host_config(const oconfig_item_t *ci, const host_con
        return host;
 }
 
-static int build_config (oconfig_item_t *ci) {
+static int cna_config (oconfig_item_t *ci) {
        int i;
        oconfig_item_t *item;
        host_config_t default_host = HOST_INIT;
-       service_config_t default_service = SERVICE_INIT;
+       cfg_service_t default_service = SERVICE_INIT;
        
        for (i = 0; i < ci->children_num; ++i) {
                item = ci->children + i;
@@ -1407,10 +1448,10 @@ static int build_config (oconfig_item_t *ci) {
        return 0;
 }
 
-static int netapp_read() {
+static int cna_read(void) {
        na_elem_t *out;
        host_config_t *host;
-       service_config_t *service;
+       cfg_service_t *service;
        
        for (host = host_config; host; host = host->next) {
                for (service = host->services; service; service = service->next) {
@@ -1434,10 +1475,10 @@ static int netapp_read() {
        return 0;
 }
 
-void module_register() {
-       plugin_register_complex_config("netapp", build_config);
-       plugin_register_init("netapp", config_init);
-       plugin_register_read("netapp", netapp_read);
+void module_register(void) {
+       plugin_register_complex_config("netapp", cna_config);
+       plugin_register_init("netapp", cna_init);
+       plugin_register_read("netapp", cna_read);
 }
 
 /* vim: set sw=2 ts=2 noet fdm=marker : */