--- /dev/null
+/**
+ * collectd - src/drbd.c
+ * Copyright (C) 2014 Tim Laszlo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Tim Laszlo <tim.laszlo at gmail.com>
+ **/
+
+/*
+ See: http://www.drbd.org/users-guide/ch-admin.html#s-performance-indicators
+
+ version: 8.3.11 (api:88/proto:86-96)
+ srcversion: 71955441799F513ACA6DA60
+ 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate B r-----
+ ns:64363752 nr:0 dw:357799284 dr:846902273 al:34987022 bm:18062 lo:0 \
+ pe:0 ua:0 ap:0 ep:1 wo:f oos:0
+ */
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+
+static const char *drbd_stats = "/proc/drbd";
+static const char *drbd_names[] =
+{
+ "network_send", /* ns (network send) */
+ "network_recv", /* nr (network receive) */
+ "disk_write", /* dw (disk write) */
+ "disk_read", /* dr (disk read) */
+ "activity_log", /* al (activity log) */
+ "bitmap", /* bm (bit map) */
+ "local_count", /* lo (local count) */
+ "pending", /* pe (pending) */
+ "unacknowledged", /* ua (unacknowledged) */
+ "app pending", /* ap (application pending) */
+ "epochs", /* ep (epochs) */
+ NULL, /* wo (write order) */
+ "oos" /* oos (out of sync) */
+};
+static size_t drbd_names_num = STATIC_ARRAY_SIZE (drbd_names);
+
+static int drbd_init (void)
+{
+ return (0);
+}
+
+
+static int drbd_submit_fields (long int resource,
+ char **fields, size_t fields_num)
+{
+ char plugin_instance[DATA_MAX_NAME_LEN];
+ value_t values[fields_num];
+ value_list_t vl = VALUE_LIST_INIT;
+ size_t i;
+
+ if (resource < 0)
+ {
+ WARNING ("drbd plugin: Unable to parse resource");
+ return (EINVAL);
+ }
+
+ if (fields_num != drbd_names_num)
+ {
+ WARNING ("drbd plugin: Wrong number of fields for "
+ "r%ld statistics. Expected %zu, got %zu.",
+ resource, drbd_names_num, fields_num);
+ return (EINVAL);
+ }
+
+ ssnprintf (plugin_instance, sizeof (plugin_instance), "r%ld",
+ resource);
+
+ for (i = 0; i < drbd_names_num; i++)
+ {
+ char *data;
+ /* skip non numeric wo */
+ if (strncmp(fields[i], "wo", 2) == 0)
+ continue;
+ data = strchr(fields[i], ':');
+ if (data == NULL)
+ return (EINVAL);
+ (void) parse_value (++data, &values[i], DS_TYPE_DERIVE);
+ }
+
+ vl.values_len = 1;
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "drbd", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, plugin_instance,
+ sizeof (vl.plugin_instance));
+ sstrncpy (vl.type, "drbd_resource", sizeof (vl.type));
+
+ for (i = 0; i < fields_num; i++)
+ {
+ if (drbd_names[i] == NULL)
+ continue;
+ vl.values = values + i;
+ sstrncpy (vl.type_instance, drbd_names[i],
+ sizeof (vl.type_instance));
+ plugin_dispatch_values (&vl);
+ }
+
+ return (0);
+} /* drbd_submit_fields */
+
+static int drbd_read (void)
+{
+ FILE *fh;
+ char buffer[256];
+
+ long int resource = -1;
+ char *fields[16];
+ int fields_num = 0;
+
+ fh = fopen (drbd_stats, "r");
+ if (fh == NULL)
+ {
+ WARNING ("Unable to open%s", drbd_stats);
+ return (EINVAL);
+ }
+
+ while (fgets (buffer, sizeof (buffer), fh) != NULL)
+ {
+ fields_num = strsplit (buffer,
+ fields, STATIC_ARRAY_SIZE (fields));
+
+ /* ignore headers (first two iterations) */
+ if (fields_num < 4)
+ continue;
+
+ if (isdigit(fields[0][0]))
+ {
+ /* parse the resource line, next loop iteration
+ will submit values for this resource */
+ resource = strtol(fields[0], NULL, 10);
+ }
+ else
+ {
+ /* handle stats data for the resource defined in the
+ previous iteration */
+ drbd_submit_fields(resource, fields, fields_num);
+ }
+ } /* while (fgets) */
+
+ fclose (fh);
+ return (0);
+} /* void drbd_read */
+
+void module_register (void)
+{
+ plugin_register_init ("drbd", drbd_init);
+ plugin_register_read ("drbd", drbd_read);
+} /* void module_register */
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