netapp plugin: Refactor the VolumePerf collection.
authorFlorian Forster <octo@leeloo.lan.home.verplant.org>
Tue, 29 Sep 2009 14:24:40 +0000 (16:24 +0200)
committerFlorian Forster <octo@leeloo.lan.home.verplant.org>
Tue, 29 Sep 2009 14:24:40 +0000 (16:24 +0200)
Same procedure one last time. The “GetVolumePerfData” block has been
renamed to “VolumePerf”. The “Get{IO,Ops,Latency}” options now
use ignore lists, too. Appropriate “IgnoreSelected{IO,Ops,Latency}”
options have been introduced.

src/collectd.conf.pod
src/netapp.c

index f1d1ad9..f3f2f48 100644 (file)
@@ -1681,8 +1681,14 @@ Required capabilities are documented below.
       GetBusy true
     </Disks>
     
-    <GetVolumePerfData>
-    </GetVolumePerfData>
+    <VolumePerf>
+      GetIO      "volume0"
+      IgnoreSelectedIO      false
+      GetOps     "volume0"
+      IgnoreSelectedOps     false
+      GetLatency "volume0"
+      IgnoreSelectedLatency false
+    </VolumePerf>
     
     <VolumeUsage>
       Capacity "vol0"
@@ -1966,64 +1972,57 @@ Result: One value list of type "percent" and type instance "disk_busy".
 
 =back
 
-=head3 The GetVolumePerfData block
+=head3 The VolumePerf block
 
 This will collect various performance data about the individual volumes.
 
-All of these options take a list of volumes as parameters. In this case
-"volume" means just the name of the volume, without the "/vol/" prefix or
-anything like that.
-
-The special values "-" and "+" are supported. "-" means "don't collect values
-for any volumes". "+" means "collect values for all volumes, even volumes that
-are created after collectd was started." Additionally you can prefix a volume
-name with a "-" sign to exclude this one volume. Eg '"+" "-vol0"' collectes
-values for all volumes except vol0.  The order of the parameters is important.
-'"-vol0" "+"' doesn't make sense because the "+" overrides the earlier "-vol0".
+You can select which data to collect about which volume using the following
+options. They follow the standard ignorelist semantic.
 
 B<Note:> To get this data the collectd user needs the
-"api-perf-object-get-instances" capability.
+I<api-perf-object-get-instances> capability.
 
 =over 4
 
-=item B<GetIO> I<Volume> [I<Volume> ...]
-The current IO throughput will be read for every volume specified here.
-
-Optional
-
-Type: list of strings
+=item B<GetIO> I<Volume>
 
-Default: "+"
+=item B<GetOps> I<Volume>
 
-Result: Data sources of type "disk_octets" and the name of the volume as
-plugin_instance.
+=item B<GetLatency> I<Volume>
 
-=item B<GetOps> I<Volume> [I<Volume> ...]
+Select the given volume for IO, operations or latency statistics collection.
+The argument is the name of the volume without the C</vol/> prefix.
 
-The current number of operation will be read for every volume specified here. 
+Since the standard ignorelist functionality is used here, you can use a string
+starting and ending with a slash to specify regular expression matching: To
+match the volumes "vol0", "vol2" and "vol7", you can use this regular
+expression:
 
-Optional
+  GetIO "/^vol[027]$/"
 
-Type: list of strings
+If no regular expression is specified, an exact match is required. Both,
+regular and exact matching are case sensitive.
 
-Default: "+"
+If no volume was specified at all for either of the three options, that data
+will be collected for all available volumes.
 
-Result: Data sources of type "disk_ops" and the name of the volume as
-plugin_instance.
+=item B<IgnoreSelectedIO> B<true>|B<false>
 
-=item B<GetLatency> I<Volume> [I<Volume> ...]
+=item B<IgnoreSelectedOps> B<true>|B<false>
 
-The current latency for volume access in microseconds will be read for every
-volume specified here. 
+=item B<IgnoreSelectedLatency> B<true>|B<false>
 
-Optional
+When set to B<true>, the volumes selected for IO, operations or latency
+statistics collection will be ignored and the data will be collected for all
+other volumes.
 
-Type: list of strings
+When set to B<false>, data will only be collected for the specified volumes and
+all other volumes will be ignored.
 
-Default: "+"
+If no volumes have been specified with the above B<Get*> options, all volumes
+will be collected regardless of the B<IgnoreSelected*> option.
 
-Result: Data sources of type "disk_latency" and the name of the volume as
-plugin_instance.
+Defaults to B<false>
 
 =back
 
index 1e0834b..b50b490 100644 (file)
@@ -130,8 +130,8 @@ typedef struct {
  * 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
+ * The "cna_handle_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.
  */
@@ -147,20 +147,33 @@ typedef struct {
 #define HAVE_VOLUME_PERF_LATENCY_READ  0x0100
 #define HAVE_VOLUME_PERF_LATENCY_WRITE 0x0200
 #define HAVE_VOLUME_PERF_ALL           0x03F0
-typedef struct {
-       uint32_t flags;
-} cfg_volume_perf_t;
-
-typedef struct {
+struct data_volume_perf_s;
+typedef struct data_volume_perf_s data_volume_perf_t;
+struct data_volume_perf_s {
+       char *name;
        uint32_t flags;
        time_t timestamp;
+
        uint64_t read_bytes;
        uint64_t write_bytes;
        uint64_t read_ops;
        uint64_t write_ops;
        uint64_t read_latency;
        uint64_t write_latency;
-} data_volume_perf_t;
+
+       data_volume_perf_t *next;
+};
+
+typedef struct {
+       cna_interval_t interval;
+       na_elem_t *query;
+
+       ignorelist_t *il_octets;
+       ignorelist_t *il_operations;
+       ignorelist_t *il_latency;
+
+       data_volume_perf_t *volumes;
+} cfg_volume_perf_t;
 /* }}} data_volume_perf_t */
 
 /*! Data types for volume usage statistics {{{
@@ -258,6 +271,7 @@ struct host_config_s {
        cfg_service_t *services;
        cfg_wafl_t *cfg_wafl;
        cfg_disk_t *cfg_disk;
+       cfg_volume_perf_t *cfg_volume_perf;
        cfg_volume_usage_t *cfg_volume_usage;
        cfg_system_t *cfg_system;
        volume_t *volumes;
@@ -328,6 +342,34 @@ static void free_cfg_disk (cfg_disk_t *cfg_disk) /* {{{ */
        sfree (cfg_disk);
 } /* }}} void free_cfg_disk */
 
+static void free_cfg_volume_perf (cfg_volume_perf_t *cvp) /* {{{ */
+{
+       data_volume_perf_t *data;
+
+       if (cvp == NULL)
+               return;
+
+       /* Free the ignorelists */
+       ignorelist_free (cvp->il_octets);
+       ignorelist_free (cvp->il_operations);
+       ignorelist_free (cvp->il_latency);
+
+       /* Free the linked list of volumes */
+       data = cvp->volumes;
+       while (data != NULL)
+       {
+               data_volume_perf_t *next = data->next;
+               sfree (data->name);
+               sfree (data);
+               data = next;
+       }
+
+       if (cvp->query != NULL)
+               na_elem_free (cvp->query);
+
+       sfree (cvp);
+} /* }}} void free_cfg_volume_perf */
+
 static void free_cfg_volume_usage (cfg_volume_usage_t *cvu) /* {{{ */
 {
        data_volume_usage_t *data;
@@ -400,6 +442,7 @@ 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_cfg_volume_perf (hc->cfg_volume_perf);
        free_cfg_volume_usage (hc->cfg_volume_usage);
        free_cfg_system (hc->cfg_system);
        free_volume (hc->volumes);
@@ -414,50 +457,6 @@ static void free_host_config (host_config_t *hc) /* {{{ */
  *
  * Used to look up volumes and disks or to handle flags.
  */
-static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
-               uint32_t vol_perf_flags)
-{
-       volume_t *v;
-
-       if (name == NULL)
-               return (NULL);
-       
-       /* Make sure the default flags include the init-bit. */
-       if (vol_perf_flags != 0)
-               vol_perf_flags |= CFG_VOLUME_PERF_INIT;
-
-       for (v = host->volumes; v; v = v->next) {
-               if (strcmp(v->name, name) != 0)
-                       continue;
-
-               /* Check if the flags have been initialized. */
-               if (((v->perf_data.flags & CFG_VOLUME_PERF_INIT) == 0)
-                               && (vol_perf_flags != 0))
-                       v->perf_data.flags = vol_perf_flags;
-
-               return v;
-       }
-
-       DEBUG ("netapp plugin: Allocating new entry for volume %s.", name);
-       v = malloc(sizeof(*v));
-       if (v == NULL)
-               return (NULL);
-       memset (v, 0, sizeof (*v));
-
-       v->perf_data.flags = vol_perf_flags;
-
-       v->name = strdup(name);
-       if (v->name == NULL) {
-               sfree (v);
-               return (NULL);
-       }
-
-       v->next = host->volumes;
-       host->volumes = v;
-
-       return v;
-} /* }}} volume_t *get_volume */
-
 static disk_t *get_disk(cfg_disk_t *cd, const char *name) /* {{{ */
 {
        disk_t *d;
@@ -546,18 +545,69 @@ static data_volume_usage_t *get_volume_usage (cfg_volume_usage_t *cvu, /* {{{ */
        return (new);
 } /* }}} data_volume_usage_t *get_volume_usage */
 
-static void host_set_all_perf_data_flags(const host_config_t *host, /* {{{ */
-               uint32_t flag, _Bool set)
+static data_volume_perf_t *get_volume_perf (cfg_volume_perf_t *cvp, /* {{{ */
+               const char *name)
 {
-       volume_t *v;
-       
-       for (v = host->volumes; v; v = v->next) {
-               if (set)
-                       v->perf_data.flags |= flag;
-               else /* if (!set) */
-                       v->perf_data.flags &= ~flag;
+       data_volume_perf_t *last;
+       data_volume_perf_t *new;
+
+       int ignore_octets = 0;
+       int ignore_operations = 0;
+       int ignore_latency = 0;
+
+       if ((cvp == NULL) || (name == NULL))
+               return (NULL);
+
+       last = cvp->volumes;
+       while (last != NULL)
+       {
+               if (strcmp (last->name, name) == 0)
+                       return (last);
+
+               if (last->next == NULL)
+                       break;
+
+               last = last->next;
+       }
+
+       /* Check the ignorelists. If *all three* tell us to ignore a volume, return
+        * NULL. */
+       ignore_octets = ignorelist_match (cvp->il_octets, name);
+       ignore_operations = ignorelist_match (cvp->il_operations, name);
+       ignore_latency = ignorelist_match (cvp->il_latency, name);
+       if ((ignore_octets != 0) || (ignore_operations != 0)
+                       || (ignore_latency != 0))
+               return (NULL);
+
+       /* Not found: allocate. */
+       new = malloc (sizeof (*new));
+       if (new == NULL)
+               return (NULL);
+       memset (new, 0, sizeof (*new));
+       new->next = NULL;
+
+       new->name = strdup (name);
+       if (new->name == NULL)
+       {
+               sfree (new);
+               return (NULL);
        }
-} /* }}} void host_set_all_perf_data_flags */
+
+       if (ignore_octets == 0)
+               new->flags |= CFG_VOLUME_PERF_IO;
+       if (ignore_operations == 0)
+               new->flags |= CFG_VOLUME_PERF_OPS;
+       if (ignore_latency == 0)
+               new->flags |= CFG_VOLUME_PERF_LATENCY;
+
+       /* Add to end of list. */
+       if (last == NULL)
+               cvp->volumes = new;
+       else
+               last->next = new;
+
+       return (new);
+} /* }}} data_volume_perf_t *get_volume_perf */
 
 /*
  * Various submit functions.
@@ -725,28 +775,28 @@ static int submit_wafl_data (const char *hostname, const char *instance, /* {{{
 
 /* Submits volume performance data to the daemon, taking care to honor and
  * update flags appropriately. */
-static int submit_volume_perf_data (const host_config_t *host, /* {{{ */
-               volume_t *volume,
+static int submit_volume_perf_data (const char *hostname, /* {{{ */
+               data_volume_perf_t *old_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)
+       if (HAS_ALL_FLAGS (old_data->flags, CFG_VOLUME_PERF_IO)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_BYTES_READ | HAVE_VOLUME_PERF_BYTES_WRITE))
        {
-               submit_two_counters (host->name, volume->name, "disk_octets", /* type instance = */ NULL,
+               submit_two_counters (hostname, old_data->name, "disk_octets", /* type instance = */ NULL,
                                (counter_t) new_data->read_bytes, (counter_t) new_data->write_bytes, new_data->timestamp);
        }
 
        /* Check for and submit disk-operations values */
-       if (HAS_ALL_FLAGS (volume->perf_data.flags, CFG_VOLUME_PERF_OPS)
+       if (HAS_ALL_FLAGS (old_data->flags, CFG_VOLUME_PERF_OPS)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE))
        {
-               submit_two_counters (host->name, volume->name, "disk_ops", /* type instance = */ NULL,
+               submit_two_counters (hostname, old_data->name, "disk_ops", /* type instance = */ NULL,
                                (counter_t) new_data->read_ops, (counter_t) new_data->write_ops, new_data->timestamp);
        }
 
        /* Check for, calculate and submit disk-latency values */
-       if (HAS_ALL_FLAGS (volume->perf_data.flags, CFG_VOLUME_PERF_LATENCY
+       if (HAS_ALL_FLAGS (old_data->flags, CFG_VOLUME_PERF_LATENCY
                                | HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE
                                | HAVE_VOLUME_PERF_LATENCY_READ | HAVE_VOLUME_PERF_LATENCY_WRITE)
                        && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE
@@ -759,50 +809,50 @@ static int submit_volume_perf_data (const host_config_t *host, /* {{{ */
                latency_per_op_write = NAN;
 
                /* Check if a counter wrapped around. */
-               if ((new_data->read_ops > volume->perf_data.read_ops)
-                               && (new_data->read_latency > volume->perf_data.read_latency))
+               if ((new_data->read_ops > old_data->read_ops)
+                               && (new_data->read_latency > old_data->read_latency))
                {
                        uint64_t diff_ops_read;
                        uint64_t diff_latency_read;
 
-                       diff_ops_read = new_data->read_ops - volume->perf_data.read_ops;
-                       diff_latency_read = new_data->read_latency - volume->perf_data.read_latency;
+                       diff_ops_read = new_data->read_ops - old_data->read_ops;
+                       diff_latency_read = new_data->read_latency - old_data->read_latency;
 
                        if (diff_ops_read > 0)
                                latency_per_op_read = ((gauge_t) diff_latency_read) / ((gauge_t) diff_ops_read);
                }
 
-               if ((new_data->write_ops > volume->perf_data.write_ops)
-                               && (new_data->write_latency > volume->perf_data.write_latency))
+               if ((new_data->write_ops > old_data->write_ops)
+                               && (new_data->write_latency > old_data->write_latency))
                {
                        uint64_t diff_ops_write;
                        uint64_t diff_latency_write;
 
-                       diff_ops_write = new_data->write_ops - volume->perf_data.write_ops;
-                       diff_latency_write = new_data->write_latency - volume->perf_data.write_latency;
+                       diff_ops_write = new_data->write_ops - old_data->write_ops;
+                       diff_latency_write = new_data->write_latency - old_data->write_latency;
 
                        if (diff_ops_write > 0)
                                latency_per_op_write = ((gauge_t) diff_latency_write) / ((gauge_t) diff_ops_write);
                }
 
-               submit_two_gauge (host->name, volume->name, "disk_latency", /* type instance = */ NULL,
+               submit_two_gauge (hostname, old_data->name, "disk_latency", /* type instance = */ NULL,
                                latency_per_op_read, latency_per_op_write, new_data->timestamp);
        }
 
        /* Clear all HAVE_* flags. */
-       volume->perf_data.flags &= ~HAVE_VOLUME_PERF_ALL;
+       old_data->flags &= ~HAVE_VOLUME_PERF_ALL;
 
        /* Copy all counters */
-       volume->perf_data.timestamp = new_data->timestamp;
-       volume->perf_data.read_bytes = new_data->read_bytes;
-       volume->perf_data.write_bytes = new_data->write_bytes;
-       volume->perf_data.read_ops = new_data->read_ops;
-       volume->perf_data.write_ops = new_data->write_ops;
-       volume->perf_data.read_latency = new_data->read_latency;
-       volume->perf_data.write_latency = new_data->write_latency;
+       old_data->timestamp = new_data->timestamp;
+       old_data->read_bytes = new_data->read_bytes;
+       old_data->write_bytes = new_data->write_bytes;
+       old_data->read_ops = new_data->read_ops;
+       old_data->write_ops = new_data->write_ops;
+       old_data->read_latency = new_data->read_latency;
+       old_data->write_latency = new_data->write_latency;
 
        /* Copy the HAVE_* flags */
-       volume->perf_data.flags |= (new_data->flags & HAVE_VOLUME_PERF_ALL);
+       old_data->flags |= (new_data->flags & HAVE_VOLUME_PERF_ALL);
 
        return (0);
 } /* }}} int submit_volume_perf_data */
@@ -1168,6 +1218,177 @@ static int cna_query_disk (host_config_t *host) /* {{{ */
        return (status);
 } /* }}} int cna_query_disk */
 
+/* Data corresponding to <VolumePerf /> */
+static int cna_handle_volume_perf_data (const char *hostname, /* {{{ */
+               cfg_volume_perf_t *cvp, na_elem_t *data)
+{
+       time_t timestamp;
+       na_elem_t *elem_instances;
+       na_elem_iter_t iter_instances;
+       na_elem_t *elem_instance;
+       
+       timestamp = (time_t) na_child_get_uint64(data, "timestamp", 0);
+
+       elem_instances = na_elem_child(data, "instances");
+       if (elem_instances == NULL)
+       {
+               ERROR ("netapp plugin: handle_volume_perf_data: "
+                               "na_elem_child (\"instances\") failed.");
+               return (-1);
+       }
+
+       iter_instances = na_child_iterator (elem_instances);
+       for (elem_instance = na_iterator_next(&iter_instances);
+                       elem_instance != NULL;
+                       elem_instance = na_iterator_next(&iter_instances))
+       {
+               const char *name;
+
+               data_volume_perf_t perf_data;
+               data_volume_perf_t *v;
+
+               na_elem_t *elem_counters;
+               na_elem_iter_t iter_counters;
+               na_elem_t *elem_counter;
+
+               memset (&perf_data, 0, sizeof (perf_data));
+               perf_data.timestamp = timestamp;
+
+               name = na_child_get_string (elem_instance, "name");
+               if (name == NULL)
+                       continue;
+
+               /* get_volume_perf may return NULL if this volume is to be ignored. */
+               v = get_volume_perf (cvp, perf_data.name);
+               if (v == NULL)
+                       continue;
+
+               elem_counters = na_elem_child (elem_instance, "counters");
+               if (elem_counters == NULL)
+                       continue;
+
+               iter_counters = na_child_iterator (elem_counters);
+               for (elem_counter = na_iterator_next(&iter_counters);
+                               elem_counter != NULL;
+                               elem_counter = na_iterator_next(&iter_counters))
+               {
+                       const char *name;
+                       uint64_t value;
+
+                       name = na_child_get_string (elem_counter, "name");
+                       if (name == NULL)
+                               continue;
+
+                       value = na_child_get_uint64 (elem_counter, "value", UINT64_MAX);
+                       if (value == UINT64_MAX)
+                               continue;
+
+                       if (!strcmp(name, "read_data")) {
+                               perf_data.read_bytes = value;
+                               perf_data.flags |= HAVE_VOLUME_PERF_BYTES_READ;
+                       } else if (!strcmp(name, "write_data")) {
+                               perf_data.write_bytes = value;
+                               perf_data.flags |= HAVE_VOLUME_PERF_BYTES_WRITE;
+                       } else if (!strcmp(name, "read_ops")) {
+                               perf_data.read_ops = value;
+                               perf_data.flags |= HAVE_VOLUME_PERF_OPS_READ;
+                       } else if (!strcmp(name, "write_ops")) {
+                               perf_data.write_ops = value;
+                               perf_data.flags |= HAVE_VOLUME_PERF_OPS_WRITE;
+                       } else if (!strcmp(name, "read_latency")) {
+                               perf_data.read_latency = value;
+                               perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_READ;
+                       } else if (!strcmp(name, "write_latency")) {
+                               perf_data.write_latency = value;
+                               perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_WRITE;
+                       }
+               } /* for (elem_counter) */
+
+               submit_volume_perf_data (hostname, v, &perf_data);
+       } /* for (volume) */
+
+       return (0);
+} /* }}} int cna_handle_volume_perf_data */
+
+static int cna_setup_volume_perf (cfg_volume_perf_t *cd) /* {{{ */
+{
+       na_elem_t *e;
+
+       if (cd == NULL)
+               return (EINVAL);
+
+       if (cd->query != NULL)
+               return (0);
+
+       cd->query = na_elem_new ("perf-object-get-instances");
+       if (cd->query == NULL)
+       {
+               ERROR ("netapp plugin: na_elem_new failed.");
+               return (-1);
+       }
+       na_child_add_string (cd->query, "objectname", "volume");
+
+       e = na_elem_new("counters");
+       if (e == NULL)
+       {
+               na_elem_free (cd->query);
+               cd->query = NULL;
+               ERROR ("netapp plugin: na_elem_new failed.");
+               return (-1);
+       }
+       /* "foo" means: This string has to be here but the content doesn't matter. */
+       na_child_add_string(e, "foo", "read_ops");
+       na_child_add_string(e, "foo", "write_ops");
+       na_child_add_string(e, "foo", "read_data");
+       na_child_add_string(e, "foo", "write_data");
+       na_child_add_string(e, "foo", "read_latency");
+       na_child_add_string(e, "foo", "write_latency");
+       na_child_add(cd->query, e);
+
+       return (0);
+} /* }}} int cna_setup_volume_perf */
+
+static int cna_query_volume_perf (host_config_t *host) /* {{{ */
+{
+       na_elem_t *data;
+       int status;
+       time_t now;
+
+       if (host == NULL)
+               return (EINVAL);
+
+       /* If the user did not configure volume performance statistics, return
+        * without doing anything. */
+       if (host->cfg_volume_perf == NULL)
+               return (0);
+
+       now = time (NULL);
+       if ((host->cfg_volume_perf->interval.interval + host->cfg_volume_perf->interval.last_read) > now)
+               return (0);
+
+       status = cna_setup_volume_perf (host->cfg_volume_perf);
+       if (status != 0)
+               return (status);
+       assert (host->cfg_volume_perf->query != NULL);
+
+       data = na_server_invoke_elem (host->srv, host->cfg_volume_perf->query);
+       if (na_results_status (data) != NA_OK)
+       {
+               ERROR ("netapp plugin: cna_query_volume_perf: na_server_invoke_elem failed: %s",
+                               na_results_reason (data));
+               na_elem_free (data);
+               return (-1);
+       }
+
+       status = cna_handle_volume_perf_data (host->name, host->cfg_volume_perf, data);
+
+       if (status == 0)
+               host->cfg_volume_perf->interval.last_read = now;
+
+       na_elem_free (data);
+       return (status);
+} /* }}} int cna_query_volume_perf */
+
 /* Data corresponding to <VolumeUsage /> */
 static int cna_submit_volume_usage_data (const char *hostname, /* {{{ */
                cfg_volume_usage_t *cfg_volume)
@@ -1405,66 +1626,6 @@ static int cna_query_volume_usage (host_config_t *host) /* {{{ */
        return (status);
 } /* }}} int cna_query_volume_usage */
 
-/* Data corresponding to <GetVolumePerfData /> */
-static void query_volume_perf_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
-       cfg_volume_perf_t *cfg_volume_perf = data;
-       time_t timestamp;
-       na_elem_t *counter, *inst;
-       
-       timestamp = (time_t) na_child_get_uint64(out, "timestamp", 0);
-
-       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)) {
-               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"),
-                               cfg_volume_perf->flags);
-               if (volume == NULL)
-                       continue;
-
-               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, "read_data")) {
-                               perf_data.read_bytes = value;
-                               perf_data.flags |= HAVE_VOLUME_PERF_BYTES_READ;
-                       } else if (!strcmp(name, "write_data")) {
-                               perf_data.write_bytes = value;
-                               perf_data.flags |= HAVE_VOLUME_PERF_BYTES_WRITE;
-                       } else if (!strcmp(name, "read_ops")) {
-                               perf_data.read_ops = value;
-                               perf_data.flags |= HAVE_VOLUME_PERF_OPS_READ;
-                       } else if (!strcmp(name, "write_ops")) {
-                               perf_data.write_ops = value;
-                               perf_data.flags |= HAVE_VOLUME_PERF_OPS_WRITE;
-                       } else if (!strcmp(name, "read_latency")) {
-                               perf_data.read_latency = value;
-                               perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_READ;
-                       } else if (!strcmp(name, "write_latency")) {
-                               perf_data.write_latency = value;
-                               perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_WRITE;
-                       }
-               }
-
-               submit_volume_perf_data (host, volume, &perf_data);
-       } /* for (volume) */
-} /* }}} void query_volume_perf_data */
-
 /* Data corresponding to <System /> */
 static int cna_handle_system_data (const char *hostname, /* {{{ */
                cfg_system_t *cfg_system, na_elem_t *data)
@@ -1648,34 +1809,6 @@ static int cna_config_bool_to_flag (const oconfig_item_t *ci, /* {{{ */
        return (0);
 } /* }}} int cna_config_bool_to_flag */
 
-/* Handling of the "Multiplier" option which is allowed in every block. */
-static int cna_config_get_multiplier (const oconfig_item_t *ci, /* {{{ */
-               cfg_service_t *service)
-{
-       int tmp;
-
-       if ((ci == NULL) || (service == NULL))
-               return (EINVAL);
-
-       if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
-       {
-               WARNING ("netapp plugin: The `Multiplier' option needs exactly one numeric argument.");
-               return (-1);
-       }
-
-       tmp = (int) (ci->values[0].value.number + .5);
-       if (tmp < 1)
-       {
-               WARNING ("netapp plugin: The `Multiplier' option needs a positive integer argument.");
-               return (-1);
-       }
-
-       service->multiplier = tmp;
-       service->skip_countdown = tmp;
-
-       return (0);
-} /* }}} int cna_config_get_multiplier */
-
 /* Handling of the "Interval" option which is allowed in every block. */
 static int cna_config_get_interval (const oconfig_item_t *ci, /* {{{ */
                cna_interval_t *out_interval)
@@ -1705,97 +1838,153 @@ static int cna_config_get_interval (const oconfig_item_t *ci, /* {{{ */
 } /* }}} int cna_config_get_interval */
 
 /* Handling of the "GetIO", "GetOps" and "GetLatency" options within a
- * <GetVolumePerfData /> block. */
-static void cna_config_volume_performance_option (host_config_t *host, /* {{{ */
-               cfg_volume_perf_t *perf_volume, const oconfig_item_t *item,
-               uint32_t flag)
+ * <VolumePerf /> block. */
+static void cna_config_volume_perf_option (cfg_volume_perf_t *cvp, /* {{{ */
+               const oconfig_item_t *ci)
+{
+       char *name;
+       ignorelist_t * il;
+
+       if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+       {
+               WARNING ("netapp plugin: The %s option requires exactly one string argument.",
+                               ci->key);
+               return;
+       }
+
+       name = ci->values[0].value.string;
+
+       if (strcasecmp ("GetIO", ci->key) == 0)
+               il = cvp->il_octets;
+       else if (strcasecmp ("GetOps", ci->key) == 0)
+               il = cvp->il_operations;
+       else if (strcasecmp ("GetLatency", ci->key) == 0)
+               il = cvp->il_latency;
+       else
+               return;
+
+       ignorelist_add (il, name);
+} /* }}} void cna_config_volume_perf_option */
+
+/* Handling of the "IgnoreSelectedIO", "IgnoreSelectedOps" and
+ * "IgnoreSelectedLatency" options within a <VolumePerf /> block. */
+static void cna_config_volume_perf_default (cfg_volume_perf_t *cvp, /* {{{ */
+               const oconfig_item_t *ci)
+{
+       ignorelist_t *il;
+
+       if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
+       {
+               WARNING ("netapp plugin: The %s option requires exactly one string argument.",
+                               ci->key);
+               return;
+       }
+
+       if (strcasecmp ("IgnoreSelectedIO", ci->key) == 0)
+               il = cvp->il_octets;
+       else if (strcasecmp ("IgnoreSelectedOps", ci->key) == 0)
+               il = cvp->il_operations;
+       else if (strcasecmp ("IgnoreSelectedLatency", ci->key) == 0)
+               il = cvp->il_latency;
+       else
+               return;
+
+       if (ci->values[0].value.boolean)
+               ignorelist_set_invert (il, /* invert = */ 0);
+       else
+               ignorelist_set_invert (il, /* invert = */ 1);
+} /* }}} void cna_config_volume_perf_default */
+
+/* Corresponds to a <Disks /> block */
+/*
+ * <VolumePerf>
+ *   GetIO "vol0"
+ *   GetIO "vol1"
+ *   IgnoreSelectedIO false
+ *
+ *   GetOps "vol0"
+ *   GetOps "vol2"
+ *   IgnoreSelectedOps false
+ *
+ *   GetLatency "vol2"
+ *   GetLatency "vol3"
+ *   IgnoreSelectedLatency false
+ * </VolumePerf>
+ */
+/* Corresponds to a <VolumePerf /> block */
+static int cna_config_volume_performance (host_config_t *host, /* {{{ */
+               const oconfig_item_t *ci)
 {
+       cfg_volume_perf_t *cfg_volume_perf;
        int i;
-       
-       for (i = 0; i < item->values_num; ++i) {
-               const char *name;
-               volume_t *v;
-               _Bool set = true;
 
-               if (item->values[i].type != OCONFIG_TYPE_STRING) {
-                       WARNING("netapp plugin: Ignoring non-string argument in "
-                                       "\"GetVolumePerfData\" block for host %s", host->name);
-                       continue;
-               }
+       if ((host == NULL) || (ci == NULL))
+               return (EINVAL);
 
-               name = item->values[i].value.string;
-               if (name[0] == '+') {
-                       set = true;
-                       ++name;
-               } else if (name[0] == '-') {
-                       set = false;
-                       ++name;
-               }
+       if (host->cfg_volume_perf == NULL)
+       {
+               cfg_volume_perf = malloc (sizeof (*cfg_volume_perf));
+               if (cfg_volume_perf == NULL)
+                       return (ENOMEM);
+               memset (cfg_volume_perf, 0, sizeof (*cfg_volume_perf));
 
-               if (!name[0]) {
-                       if (set)
-                               perf_volume->flags |= flag;
-                       else /* if (!set) */
-                               perf_volume->flags &= ~flag;
+               /* Set default flags */
+               cfg_volume_perf->query = NULL;
+               cfg_volume_perf->volumes = NULL;
 
-                       host_set_all_perf_data_flags(host, flag, set);
-                       continue;
+               cfg_volume_perf->il_octets = ignorelist_create (/* invert = */ 1);
+               if (cfg_volume_perf->il_octets == NULL)
+               {
+                       sfree (cfg_volume_perf);
+                       return (ENOMEM);
                }
 
-               v = get_volume (host, name, perf_volume->flags);
-               if (v == NULL)
-                       continue;
+               cfg_volume_perf->il_operations = ignorelist_create (/* invert = */ 1);
+               if (cfg_volume_perf->il_operations == NULL)
+               {
+                       ignorelist_free (cfg_volume_perf->il_octets);
+                       sfree (cfg_volume_perf);
+                       return (ENOMEM);
+               }
 
-               if (set)
-                       v->perf_data.flags |= flag;
-               else /* if (!set) */
-                       v->perf_data.flags &= ~flag;
-       } /* for (i = 0 .. item->values_num) */
-} /* }}} void cna_config_volume_performance_option */
+               cfg_volume_perf->il_latency = ignorelist_create (/* invert = */ 1);
+               if (cfg_volume_perf->il_latency == NULL)
+               {
+                       ignorelist_free (cfg_volume_perf->il_octets);
+                       ignorelist_free (cfg_volume_perf->il_operations);
+                       sfree (cfg_volume_perf);
+                       return (ENOMEM);
+               }
 
-/* Corresponds to a <GetVolumePerfData /> block */
-static void cna_config_volume_performance(host_config_t *host, const oconfig_item_t *ci) { /* {{{ */
-       int i, had_io = 0, had_ops = 0, had_latency = 0;
-       cfg_service_t *service;
-       cfg_volume_perf_t *perf_volume;
+               host->cfg_volume_perf = cfg_volume_perf;
+       }
+       cfg_volume_perf = host->cfg_volume_perf;
        
-       service = malloc(sizeof(*service));
-       service->query = 0;
-       service->handler = query_volume_perf_data;
-       perf_volume = service->data = malloc(sizeof(*perf_volume));
-       perf_volume->flags = CFG_VOLUME_PERF_INIT;
-       service->next = host->services;
-       host->services = service;
        for (i = 0; i < ci->children_num; ++i) {
                oconfig_item_t *item = ci->children + i;
                
                /* if (!item || !item->key || !*item->key) continue; */
-               if (!strcasecmp(item->key, "Multiplier")) {
-                       cna_config_get_multiplier (item, service);
-               } else if (!strcasecmp(item->key, "GetIO")) {
-                       had_io = 1;
-                       cna_config_volume_performance_option(host, perf_volume, item, CFG_VOLUME_PERF_IO);
-               } else if (!strcasecmp(item->key, "GetOps")) {
-                       had_ops = 1;
-                       cna_config_volume_performance_option(host, perf_volume, item, CFG_VOLUME_PERF_OPS);
-               } else if (!strcasecmp(item->key, "GetLatency")) {
-                       had_latency = 1;
-                       cna_config_volume_performance_option(host, perf_volume, item, CFG_VOLUME_PERF_LATENCY);
-               }
-       }
-       if (!had_io) {
-               perf_volume->flags |= CFG_VOLUME_PERF_IO;
-               host_set_all_perf_data_flags(host, CFG_VOLUME_PERF_IO, /* set = */ true);
-       }
-       if (!had_ops) {
-               perf_volume->flags |= CFG_VOLUME_PERF_OPS;
-               host_set_all_perf_data_flags(host, CFG_VOLUME_PERF_OPS, /* set = */ true);
-       }
-       if (!had_latency) {
-               perf_volume->flags |= CFG_VOLUME_PERF_LATENCY;
-               host_set_all_perf_data_flags(host, CFG_VOLUME_PERF_LATENCY, /* set = */ true);
+               if (strcasecmp(item->key, "Interval") == 0)
+                       cna_config_get_interval (item, &cfg_volume_perf->interval);
+               else if (!strcasecmp(item->key, "GetIO"))
+                       cna_config_volume_perf_option (cfg_volume_perf, item);
+               else if (!strcasecmp(item->key, "GetOps"))
+                       cna_config_volume_perf_option (cfg_volume_perf, item);
+               else if (!strcasecmp(item->key, "GetLatency"))
+                       cna_config_volume_perf_option (cfg_volume_perf, item);
+               else if (!strcasecmp(item->key, "IgnoreSelectedIO"))
+                       cna_config_volume_perf_default (cfg_volume_perf, item);
+               else if (!strcasecmp(item->key, "IgnoreSelectedOps"))
+                       cna_config_volume_perf_default (cfg_volume_perf, item);
+               else if (!strcasecmp(item->key, "IgnoreSelectedLatency"))
+                       cna_config_volume_perf_default (cfg_volume_perf, item);
+               else
+                       WARNING ("netapp plugin: The option %s is not allowed within "
+                                       "`VolumePerf' blocks.", item->key);
        }
-} /* }}} void cna_config_volume_performance */
+
+       return (0);
+} /* }}} int cna_config_volume_performance */
 
 /* Handling of the "Capacity" and "Snapshot" options within a <VolumeUsage />
  * block. */
@@ -1965,7 +2154,9 @@ static int cna_config_wafl(host_config_t *host, oconfig_item_t *ci) /* {{{ */
  * </VolumeUsage>
  */
 /* Corresponds to a <VolumeUsage /> block */
-static int cna_config_volume_usage(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
+static int cna_config_volume_usage(host_config_t *host, /* {{{ */
+               const oconfig_item_t *ci)
+{
        cfg_volume_usage_t *cfg_volume_usage;
        int i;
 
@@ -2016,6 +2207,9 @@ static int cna_config_volume_usage(host_config_t *host, oconfig_item_t *ci) { /*
                        cna_config_volume_usage_default (cfg_volume_usage, item);
                else if (!strcasecmp(item->key, "IgnoreSelectedSnapshot"))
                        cna_config_volume_usage_default (cfg_volume_usage, item);
+               else
+                       WARNING ("netapp plugin: The option %s is not allowed within "
+                                       "`VolumeUsage' blocks.", item->key);
        }
 
        return (0);
@@ -2135,7 +2329,7 @@ static host_config_t *cna_config_host (const oconfig_item_t *ci, /* {{{ */
                        cna_config_wafl(host, item);
                } else if (!strcasecmp(item->key, "Disks")) {
                        cna_config_disk(host, item);
-               } else if (!strcasecmp(item->key, "GetVolumePerfData")) {
+               } else if (!strcasecmp(item->key, "VolumePerf")) {
                        cna_config_volume_performance(host, item);
                } else if (!strcasecmp(item->key, "VolumeUsage")) {
                        cna_config_volume_usage(host, item);
@@ -2181,9 +2375,7 @@ static host_config_t *cna_config_host (const oconfig_item_t *ci, /* {{{ */
  */
 static int cna_init(void) { /* {{{ */
        char err[256];
-       na_elem_t *e;
        host_config_t *host;
-       cfg_service_t *service;
        
        if (!global_host_config) {
                WARNING("netapp plugin: Plugin loaded but no hosts defined.");
@@ -2215,25 +2407,6 @@ static int cna_init(void) { /* {{{ */
                na_server_style(host->srv, NA_STYLE_LOGIN_PASSWORD);
                na_server_adminuser(host->srv, host->username, host->password);
                na_server_set_timeout(host->srv, 5 /* seconds */);
-
-               for (service = host->services; service; service = service->next) {
-                       service->interval = host->interval * service->multiplier;
-
-                       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");
-                               /* "foo" means: This string has to be here but
-                                  the content doesn't matter. */
-                               na_child_add_string(e, "foo", "read_ops");
-                               na_child_add_string(e, "foo", "write_ops");
-                               na_child_add_string(e, "foo", "read_data");
-                               na_child_add_string(e, "foo", "write_data");
-                               na_child_add_string(e, "foo", "read_latency");
-                               na_child_add_string(e, "foo", "write_latency");
-                               na_child_add(service->query, e);
-                       }
-               } /* for (host->services) */
        }
        return 0;
 } /* }}} int cna_init */
@@ -2278,7 +2451,7 @@ static int cna_config (oconfig_item_t *ci) { /* {{{ */
        return 0;
 } /* }}} int cna_config */
 
-static int cna_read(void) { /* {{{ */
+static int cna_read (void) { /* {{{ */
        na_elem_t *out;
        host_config_t *host;
        cfg_service_t *service;
@@ -2304,6 +2477,7 @@ static int cna_read(void) { /* {{{ */
 
                cna_query_wafl (host);
                cna_query_disk (host);
+               cna_query_volume_perf (host);
                cna_query_volume_usage (host);
                cna_query_system (host);
        }