2 * collectd - src/virt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Richard W.M. Jones <rjones@redhat.com>
20 * Przemyslaw Szczerbik <przemyslawx.szczerbik@intel.com>
26 #include "utils/common/common.h"
27 #include "utils/ignorelist/ignorelist.h"
28 #include "utils_complain.h"
30 #include <libgen.h> /* for basename(3) */
31 #include <libvirt/libvirt.h>
32 #include <libvirt/virterror.h>
33 #include <libxml/parser.h>
34 #include <libxml/tree.h>
35 #include <libxml/xpath.h>
36 #include <libxml/xpathInternals.h>
40 #define PLUGIN_NAME "virt"
42 /* Secure strcat macro assuring null termination. Parameter (n) is the size of
43 buffer (d), allowing this macro to be safe for static and dynamic buffers */
44 #define SSTRNCAT(d, s, n) \
46 size_t _l = strlen(d); \
47 sstrncpy((d) + _l, (s), (n)-_l); \
50 #ifdef LIBVIR_CHECK_VERSION
52 #if LIBVIR_CHECK_VERSION(0, 9, 2)
53 #define HAVE_DOM_REASON 1
56 #if LIBVIR_CHECK_VERSION(0, 9, 5)
57 #define HAVE_BLOCK_STATS_FLAGS 1
58 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1
61 #if LIBVIR_CHECK_VERSION(0, 9, 10)
62 #define HAVE_DISK_ERR 1
65 #if LIBVIR_CHECK_VERSION(0, 9, 11)
66 #define HAVE_CPU_STATS 1
67 #define HAVE_DOM_STATE_PMSUSPENDED 1
68 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1
72 virConnectListAllDomains() appeared in 0.10.2
73 Note that LIBVIR_CHECK_VERSION appeared a year later, so
74 in some systems which actually have virConnectListAllDomains()
77 #if LIBVIR_CHECK_VERSION(0, 10, 2)
78 #define HAVE_LIST_ALL_DOMAINS 1
81 #if LIBVIR_CHECK_VERSION(1, 0, 1)
82 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
85 #if LIBVIR_CHECK_VERSION(1, 1, 1)
86 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
89 #if LIBVIR_CHECK_VERSION(1, 2, 9)
90 #define HAVE_JOB_STATS 1
93 #if LIBVIR_CHECK_VERSION(1, 2, 10)
94 #define HAVE_DOM_REASON_CRASHED 1
97 #if LIBVIR_CHECK_VERSION(1, 2, 11)
98 #define HAVE_FS_INFO 1
101 #if LIBVIR_CHECK_VERSION(1, 2, 15)
102 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
105 #if LIBVIR_CHECK_VERSION(1, 3, 3)
106 #define HAVE_PERF_STATS 1
107 #define HAVE_DOM_REASON_POSTCOPY 1
110 #endif /* LIBVIR_CHECK_VERSION */
112 /* structure used for aggregating notification-thread data*/
113 typedef struct virt_notif_thread_s {
114 pthread_t event_loop_tid;
115 int domain_event_cb_id;
116 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
118 } virt_notif_thread_t;
120 /* PersistentNotification is false by default */
121 static bool persistent_notification = false;
123 static bool report_block_devices = true;
124 static bool report_network_interfaces = true;
126 /* Thread used for handling libvirt notifications events */
127 static virt_notif_thread_t notif_thread;
129 const char *domain_states[] = {
130 [VIR_DOMAIN_NOSTATE] = "no state",
131 [VIR_DOMAIN_RUNNING] = "the domain is running",
132 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
133 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
134 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
135 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
136 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
137 #ifdef HAVE_DOM_STATE_PMSUSPENDED
138 [VIR_DOMAIN_PMSUSPENDED] =
139 "the domain is suspended by guest power management",
143 static int map_domain_event_to_state(int event) {
146 case VIR_DOMAIN_EVENT_STARTED:
147 ret = VIR_DOMAIN_RUNNING;
149 case VIR_DOMAIN_EVENT_SUSPENDED:
150 ret = VIR_DOMAIN_PAUSED;
152 case VIR_DOMAIN_EVENT_RESUMED:
153 ret = VIR_DOMAIN_RUNNING;
155 case VIR_DOMAIN_EVENT_STOPPED:
156 ret = VIR_DOMAIN_SHUTOFF;
158 case VIR_DOMAIN_EVENT_SHUTDOWN:
159 ret = VIR_DOMAIN_SHUTDOWN;
161 #ifdef HAVE_DOM_STATE_PMSUSPENDED
162 case VIR_DOMAIN_EVENT_PMSUSPENDED:
163 ret = VIR_DOMAIN_PMSUSPENDED;
166 #ifdef HAVE_DOM_REASON_CRASHED
167 case VIR_DOMAIN_EVENT_CRASHED:
168 ret = VIR_DOMAIN_CRASHED;
172 ret = VIR_DOMAIN_NOSTATE;
177 #ifdef HAVE_DOM_REASON
178 static int map_domain_event_detail_to_reason(int event, int detail) {
181 case VIR_DOMAIN_EVENT_STARTED:
183 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
184 ret = VIR_DOMAIN_RUNNING_BOOTED;
186 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
188 ret = VIR_DOMAIN_RUNNING_MIGRATED;
190 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
191 ret = VIR_DOMAIN_RUNNING_RESTORED;
193 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
194 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
196 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
197 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
198 ret = VIR_DOMAIN_RUNNING_WAKEUP;
202 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
205 case VIR_DOMAIN_EVENT_SUSPENDED:
207 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
209 ret = VIR_DOMAIN_PAUSED_USER;
211 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
213 ret = VIR_DOMAIN_PAUSED_MIGRATION;
215 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
217 ret = VIR_DOMAIN_PAUSED_IOERROR;
219 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
221 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
223 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
225 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
227 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
229 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
231 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
233 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
235 #ifdef HAVE_DOM_REASON_POSTCOPY
236 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
238 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
240 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
242 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
246 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
249 case VIR_DOMAIN_EVENT_RESUMED:
251 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
253 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
255 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
257 ret = VIR_DOMAIN_RUNNING_MIGRATED;
259 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
260 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
262 #ifdef HAVE_DOM_REASON_POSTCOPY
263 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
264 running in post-copy mode */
265 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
269 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
272 case VIR_DOMAIN_EVENT_STOPPED:
274 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
275 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
277 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
278 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
280 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
281 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
283 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
284 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
286 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
287 ret = VIR_DOMAIN_SHUTOFF_SAVED;
289 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
290 ret = VIR_DOMAIN_SHUTOFF_FAILED;
292 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
293 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
296 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
299 case VIR_DOMAIN_EVENT_SHUTDOWN:
301 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
303 ret = VIR_DOMAIN_SHUTDOWN_USER;
306 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
309 #ifdef HAVE_DOM_STATE_PMSUSPENDED
310 case VIR_DOMAIN_EVENT_PMSUSPENDED:
312 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
314 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
316 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
317 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
320 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
324 case VIR_DOMAIN_EVENT_CRASHED:
326 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
327 ret = VIR_DOMAIN_CRASHED_PANICKED;
330 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
334 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
339 #define DOMAIN_STATE_REASON_MAX_SIZE 20
340 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
341 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
342 "the reason is unknown",
344 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
345 "the reason is unknown",
346 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
347 "normal startup from boot",
348 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
349 "migrated from another host",
350 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
351 "restored from a state file",
352 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
353 "restored from snapshot",
354 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
355 "returned from paused state",
356 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
357 "returned from migration",
358 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
359 "returned from failed save process",
360 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
361 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
362 "returned from pmsuspended due to wakeup event",
364 #ifdef HAVE_DOM_REASON_CRASHED
365 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
366 "resumed from crashed",
368 #ifdef HAVE_DOM_REASON_POSTCOPY
369 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
370 "running in post-copy migration mode",
372 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
373 "the reason is unknown",
375 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
376 "the reason is unknown",
377 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
378 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
379 "paused for offline migration",
380 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
381 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
382 "paused for offline core dump",
383 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
384 "paused due to a disk I/O error",
385 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
386 "paused due to a watchdog event",
387 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
388 "paused after restoring from snapshot",
389 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
390 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
391 "paused during shutdown process",
393 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
395 "paused while creating a snapshot",
397 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
398 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
399 "paused due to a guest crash",
401 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
402 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
403 "the domain is being started",
405 #ifdef HAVE_DOM_REASON_POSTCOPY
406 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
407 "paused for post-copy migration",
408 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
409 "paused after failed post-copy",
411 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
412 "the reason is unknown",
413 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
414 "shutting down on user request",
416 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
417 "the reason is unknown",
418 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
419 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
420 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
421 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
422 "migrated to another host",
423 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
424 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
425 "domain failed to start",
426 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
427 "restored from a snapshot which was taken while domain was shutoff",
429 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
430 "the reason is unknown",
431 #ifdef VIR_DOMAIN_CRASHED_PANICKED
432 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
435 #ifdef HAVE_DOM_STATE_PMSUSPENDED
436 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
437 "the reason is unknown",
440 #endif /* HAVE_DOM_REASON */
442 #define NANOSEC_IN_SEC 1e9
444 #define GET_STATS(_f, _name, ...) \
446 status = _f(__VA_ARGS__); \
448 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
452 static virConnectPtr conn;
453 static char *conn_string;
454 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
456 /* Node information required for %CPU */
457 static virNodeInfo nodeinfo;
459 /* Seconds between list refreshes, 0 disables completely. */
460 static int interval = 60;
462 /* List of domains, if specified. */
463 static ignorelist_t *il_domains;
464 /* List of block devices, if specified. */
465 static ignorelist_t *il_block_devices;
466 /* List of network interface devices, if specified. */
467 static ignorelist_t *il_interface_devices;
469 static int ignore_device_match(ignorelist_t *, const char *domname,
470 const char *devpath);
472 /* Actual list of block devices found on last refresh. */
473 struct block_device {
474 virDomainPtr dom; /* domain */
475 char *path; /* name of block device */
476 bool has_source; /* information whether source is defined or not */
479 /* Actual list of network interfaces found on last refresh. */
480 struct interface_device {
481 virDomainPtr dom; /* domain */
482 char *path; /* name of interface device */
483 char *address; /* mac address of interface device */
484 char *number; /* interface device number */
487 typedef struct domain_s {
493 struct lv_read_state {
494 /* Actual list of domains found on last refresh. */
498 struct block_device *block_devices;
499 int nr_block_devices;
501 struct interface_device *interface_devices;
502 int nr_interface_devices;
505 static void free_domains(struct lv_read_state *state);
506 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
509 static void free_block_devices(struct lv_read_state *state);
510 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
511 const char *path, bool has_source);
513 static void free_interface_devices(struct lv_read_state *state);
514 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
515 const char *path, const char *address,
516 unsigned int number);
518 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
519 #define METADATA_VM_PARTITION_ELEMENT "tag"
520 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
522 #define BUFFER_MAX_LEN 256
523 #define PARTITION_TAG_MAX_LEN 32
525 struct lv_read_instance {
526 struct lv_read_state read_state;
527 char tag[PARTITION_TAG_MAX_LEN];
531 struct lv_user_data {
532 struct lv_read_instance inst;
536 #define NR_INSTANCES_DEFAULT 1
537 #define NR_INSTANCES_MAX 128
538 static int nr_instances = NR_INSTANCES_DEFAULT;
539 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
541 /* HostnameFormat. */
542 #define HF_MAX_FIELDS 4
544 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
546 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
548 /* PluginInstanceFormat */
549 #define PLGINST_MAX_FIELDS 3
558 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
561 /* HostnameMetadataNS && HostnameMetadataXPath */
562 static char *hm_xpath;
565 /* BlockDeviceFormat */
566 enum bd_field { target, source };
568 /* InterfaceFormat. */
569 enum if_field { if_address, if_name, if_number };
572 #define EX_STATS_MAX_FIELDS 15
575 ex_stats_disk = 1 << 0,
576 ex_stats_pcpu = 1 << 1,
577 ex_stats_cpu_util = 1 << 2,
578 ex_stats_domain_state = 1 << 3,
579 #ifdef HAVE_PERF_STATS
580 ex_stats_perf = 1 << 4,
582 ex_stats_vcpupin = 1 << 5,
584 ex_stats_disk_err = 1 << 6,
587 ex_stats_fs_info = 1 << 7,
589 #ifdef HAVE_JOB_STATS
590 ex_stats_job_stats_completed = 1 << 8,
591 ex_stats_job_stats_background = 1 << 9,
593 ex_stats_disk_allocation = 1 << 10,
594 ex_stats_disk_capacity = 1 << 11,
595 ex_stats_disk_physical = 1 << 12
598 static unsigned int extra_stats = ex_stats_none;
600 struct ex_stats_item {
604 static const struct ex_stats_item ex_stats_table[] = {
605 {"disk", ex_stats_disk},
606 {"pcpu", ex_stats_pcpu},
607 {"cpu_util", ex_stats_cpu_util},
608 {"domain_state", ex_stats_domain_state},
609 #ifdef HAVE_PERF_STATS
610 {"perf", ex_stats_perf},
612 {"vcpupin", ex_stats_vcpupin},
614 {"disk_err", ex_stats_disk_err},
617 {"fs_info", ex_stats_fs_info},
619 #ifdef HAVE_JOB_STATS
620 {"job_stats_completed", ex_stats_job_stats_completed},
621 {"job_stats_background", ex_stats_job_stats_background},
623 {"disk_allocation", ex_stats_disk_allocation},
624 {"disk_capacity", ex_stats_disk_capacity},
625 {"disk_physical", ex_stats_disk_physical},
626 {NULL, ex_stats_none},
629 /* BlockDeviceFormatBasename */
630 static bool blockdevice_format_basename;
631 static enum bd_field blockdevice_format = target;
632 static enum if_field interface_format = if_name;
634 /* Time that we last refreshed. */
635 static time_t last_refresh = (time_t)0;
637 static int refresh_lists(struct lv_read_instance *inst);
639 struct lv_block_stats {
640 virDomainBlockStatsStruct bi;
642 long long rd_total_times;
643 long long wr_total_times;
646 long long fl_total_times;
649 static void init_block_stats(struct lv_block_stats *bstats) {
653 bstats->bi.rd_req = -1;
654 bstats->bi.wr_req = -1;
655 bstats->bi.rd_bytes = -1;
656 bstats->bi.wr_bytes = -1;
658 bstats->rd_total_times = -1;
659 bstats->wr_total_times = -1;
661 bstats->fl_total_times = -1;
664 static void init_block_info(virDomainBlockInfoPtr binfo) {
665 binfo->allocation = -1;
666 binfo->capacity = -1;
667 binfo->physical = -1;
670 #ifdef HAVE_BLOCK_STATS_FLAGS
672 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
673 if (!strcmp(param[i].field, NAME)) { \
674 bstats->FIELD = param[i].value.l; \
678 static int get_block_stats(struct lv_block_stats *bstats,
679 virTypedParameterPtr param, int nparams) {
680 if (bstats == NULL || param == NULL)
683 for (int i = 0; i < nparams; ++i) {
684 /* ignore type. Everything must be LLONG anyway. */
685 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
686 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
687 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
688 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
689 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
690 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
691 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
692 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
698 #undef GET_BLOCK_STATS_VALUE
700 #endif /* HAVE_BLOCK_STATS_FLAGS */
702 /* ERROR(...) macro for virterrors. */
703 #define VIRT_ERROR(conn, s) \
706 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
708 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
711 static char *metadata_get_hostname(virDomainPtr dom) {
712 const char *xpath_str = NULL;
713 if (hm_xpath == NULL)
714 xpath_str = "/instance/name/text()";
716 xpath_str = hm_xpath;
718 const char *namespace = NULL;
720 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
725 char *metadata_str = virDomainGetMetadata(
726 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
727 if (metadata_str == NULL) {
731 char *hostname = NULL;
732 xmlXPathContextPtr xpath_ctx = NULL;
733 xmlXPathObjectPtr xpath_obj = NULL;
734 xmlNodePtr xml_node = NULL;
737 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
738 if (xml_doc == NULL) {
739 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
743 xpath_ctx = xmlXPathNewContext(xml_doc);
744 if (xpath_ctx == NULL) {
745 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
749 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
750 if (xpath_obj == NULL) {
751 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
756 if (xpath_obj->type != XPATH_NODESET) {
757 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
758 "(wanted %d) for metadata",
759 xpath_str, xpath_obj->type, XPATH_NODESET);
763 // TODO(sileht): We can support || operator by looping on nodes here
764 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
765 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
766 "expected=1 for metadata",
768 (xpath_obj->nodesetval == NULL) ? 0
769 : xpath_obj->nodesetval->nodeNr);
773 xml_node = xpath_obj->nodesetval->nodeTab[0];
774 if (xml_node->type == XML_TEXT_NODE) {
775 hostname = strdup((const char *)xml_node->content);
776 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
777 hostname = strdup((const char *)xml_node->children->content);
779 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
780 xpath_str, xml_node->type);
784 if (hostname == NULL) {
785 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
791 xmlXPathFreeObject(xpath_obj);
793 xmlXPathFreeContext(xpath_ctx);
800 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
802 char uuid[VIR_UUID_STRING_BUFLEN];
804 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
808 /* Construct the hostname field according to HostnameFormat. */
809 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
810 if (hostname_format[i] == hf_none)
814 SSTRNCAT(vl->host, ":", sizeof(vl->host));
816 switch (hostname_format[i]) {
820 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
823 name = virDomainGetName(dom);
825 SSTRNCAT(vl->host, name, sizeof(vl->host));
828 if (virDomainGetUUIDString(dom, uuid) == 0)
829 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
832 name = metadata_get_hostname(dom);
834 SSTRNCAT(vl->host, name, sizeof(vl->host));
839 /* Construct the plugin instance field according to PluginInstanceFormat. */
840 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
841 if (plugin_instance_format[i] == plginst_none)
845 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
847 switch (plugin_instance_format[i]) {
851 name = virDomainGetName(dom);
853 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
856 if (virDomainGetUUIDString(dom, uuid) == 0)
857 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
859 case plginst_metadata:
860 name = metadata_get_hostname(dom);
862 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
867 } /* void init_value_list */
869 static int init_notif(notification_t *notif, const virDomainPtr domain,
870 int severity, const char *msg, const char *type,
871 const char *type_instance) {
872 value_list_t vl = VALUE_LIST_INIT;
875 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
879 init_value_list(&vl, domain);
880 notification_init(notif, severity, msg, vl.host, vl.plugin,
881 vl.plugin_instance, type, type_instance);
882 notif->time = cdtime();
886 static void submit_notif(const virDomainPtr domain, int severity,
887 const char *msg, const char *type,
888 const char *type_instance) {
889 notification_t notif;
891 init_notif(¬if, domain, severity, msg, type, type_instance);
892 plugin_dispatch_notification(¬if);
894 plugin_notification_meta_free(notif.meta);
897 static void submit(virDomainPtr dom, char const *type,
898 char const *type_instance, value_t *values,
900 value_list_t vl = VALUE_LIST_INIT;
901 init_value_list(&vl, dom);
904 vl.values_len = values_len;
906 sstrncpy(vl.type, type, sizeof(vl.type));
907 if (type_instance != NULL)
908 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
910 plugin_dispatch_values(&vl);
913 static void memory_submit(virDomainPtr dom, gauge_t value) {
914 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
917 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
919 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
920 "minor_fault", "unused", "available",
921 "actual_balloon", "rss", "usable",
924 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
925 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
929 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
932 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
933 virDomainPtr dom, const char *devname) {
935 {.derive = v0}, {.derive = v1},
938 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
939 } /* void submit_derive2 */
941 static double cpu_ns_to_percent(unsigned int node_cpus,
942 unsigned long long cpu_time_old,
943 unsigned long long cpu_time_new) {
944 double percent = 0.0;
945 unsigned long long cpu_time_diff = 0;
946 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
948 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
949 cpu_time_diff = cpu_time_new - cpu_time_old;
950 percent = ((double)(100 * cpu_time_diff)) /
951 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
954 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
955 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
956 " time_diff_sec=%f percent=%f",
957 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
958 (uint64_t)cpu_time_diff, time_diff_sec, percent);
963 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
968 if (extra_stats & ex_stats_cpu_util) {
969 /* Computing %CPU requires 2 samples of cpuTime */
970 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
972 submit(dom->ptr, "percent", "virt_cpu_total",
973 &(value_t){.gauge = cpu_ns_to_percent(
974 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
979 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
983 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
985 char type_instance[DATA_MAX_NAME_LEN];
987 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
988 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
991 static void disk_block_stats_submit(struct lv_block_stats *bstats,
992 virDomainPtr dom, const char *dev,
993 virDomainBlockInfoPtr binfo) {
994 char *dev_copy = strdup(dev);
995 const char *type_instance = dev_copy;
1000 if (blockdevice_format_basename && blockdevice_format == source)
1001 type_instance = basename(dev_copy);
1003 if (!type_instance) {
1008 char flush_type_instance[DATA_MAX_NAME_LEN];
1009 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1012 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1013 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1014 (derive_t)bstats->bi.wr_req, dom, type_instance);
1016 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1017 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1018 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1020 if (extra_stats & ex_stats_disk) {
1021 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1022 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1023 (derive_t)bstats->wr_total_times, dom, type_instance);
1025 if (bstats->fl_req != -1)
1026 submit(dom, "total_requests", flush_type_instance,
1027 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1028 if (bstats->fl_total_times != -1) {
1029 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1030 submit(dom, "total_time_in_ms", flush_type_instance,
1031 &(value_t){.derive = value}, 1);
1035 /* disk_allocation, disk_capacity and disk_physical are stored only
1036 * if corresponding extrastats are set in collectd configuration file */
1037 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1038 submit(dom, "disk_allocation", type_instance,
1039 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1041 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1042 submit(dom, "disk_capacity", type_instance,
1043 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1045 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1046 submit(dom, "disk_physical", type_instance,
1047 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1053 * Function for parsing ExtraStats configuration options.
1054 * Result of parsing is stored under 'out_parsed_flags' pointer.
1056 * Returns 0 in case of success and 1 in case of parsing error
1058 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1060 unsigned int ex_stats_flags = ex_stats_none;
1062 assert(out_parsed_flags != NULL);
1064 for (int i = 0; i < numexstats; i++) {
1065 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1066 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1067 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1068 ex_stats_table[j].name);
1069 ex_stats_flags |= ex_stats_table[j].flag;
1073 if (ex_stats_table[j + 1].name == NULL) {
1074 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1081 *out_parsed_flags = ex_stats_flags;
1085 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1086 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1087 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1091 char msg[DATA_MAX_NAME_LEN];
1092 const char *state_str = domain_states[state];
1093 #ifdef HAVE_DOM_REASON
1095 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1096 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1100 const char *reason_str = domain_reasons[state][reason];
1101 /* Array size for domain reasons is fixed, but different domain states can
1102 * have different number of reasons. We need to check if reason was
1103 * successfully parsed */
1105 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1110 const char *reason_str = "N/A";
1113 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1118 case VIR_DOMAIN_NOSTATE:
1119 case VIR_DOMAIN_RUNNING:
1120 case VIR_DOMAIN_SHUTDOWN:
1121 case VIR_DOMAIN_SHUTOFF:
1122 severity = NOTIF_OKAY;
1124 case VIR_DOMAIN_BLOCKED:
1125 case VIR_DOMAIN_PAUSED:
1126 #ifdef DOM_STATE_PMSUSPENDED
1127 case VIR_DOMAIN_PMSUSPENDED:
1129 severity = NOTIF_WARNING;
1131 case VIR_DOMAIN_CRASHED:
1132 severity = NOTIF_FAILURE;
1135 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1138 submit_notif(dom, severity, msg, "domain_state", NULL);
1141 static int lv_init_ignorelists() {
1142 if (il_domains == NULL)
1143 il_domains = ignorelist_create(1);
1144 if (il_block_devices == NULL)
1145 il_block_devices = ignorelist_create(1);
1146 if (il_interface_devices == NULL)
1147 il_interface_devices = ignorelist_create(1);
1149 if (!il_domains || !il_block_devices || !il_interface_devices)
1155 /* Validates config option that may take multiple strings arguments.
1156 * Returns 0 on success, -1 otherwise */
1157 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1159 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1163 if (ci->values_num < 1) {
1165 " plugin: the '%s' option requires at least one string argument",
1170 for (int i = 0; i < ci->values_num; ++i) {
1171 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1173 " plugin: one of the '%s' options is not a valid string",
1182 static int lv_config(oconfig_item_t *ci) {
1183 if (lv_init_ignorelists() != 0) {
1184 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1188 for (int i = 0; i < ci->children_num; ++i) {
1189 oconfig_item_t *c = ci->children + i;
1191 if (strcasecmp(c->key, "Connection") == 0) {
1192 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1196 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1197 if (cf_util_get_int(c, &interval) != 0)
1201 } else if (strcasecmp(c->key, "Domain") == 0) {
1202 char *domain_name = NULL;
1203 if (cf_util_get_string(c, &domain_name) != 0)
1206 if (ignorelist_add(il_domains, domain_name)) {
1207 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1215 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1216 char *device_name = NULL;
1217 if (cf_util_get_string(c, &device_name) != 0)
1220 if (ignorelist_add(il_block_devices, device_name) != 0) {
1222 " plugin: Adding '%s' to block-device-ignorelist failed",
1230 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1231 char *device_format = NULL;
1232 if (cf_util_get_string(c, &device_format) != 0)
1235 if (strcasecmp(device_format, "target") == 0)
1236 blockdevice_format = target;
1237 else if (strcasecmp(device_format, "source") == 0)
1238 blockdevice_format = source;
1240 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1242 sfree(device_format);
1246 sfree(device_format);
1248 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1249 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1253 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1254 char *interface_name = NULL;
1255 if (cf_util_get_string(c, &interface_name) != 0)
1258 if (ignorelist_add(il_interface_devices, interface_name)) {
1259 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1261 sfree(interface_name);
1265 sfree(interface_name);
1267 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1268 bool ignore_selected = false;
1269 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1272 if (ignore_selected) {
1273 ignorelist_set_invert(il_domains, 0);
1274 ignorelist_set_invert(il_block_devices, 0);
1275 ignorelist_set_invert(il_interface_devices, 0);
1277 ignorelist_set_invert(il_domains, 1);
1278 ignorelist_set_invert(il_block_devices, 1);
1279 ignorelist_set_invert(il_interface_devices, 1);
1283 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1284 if (cf_util_get_string(c, &hm_ns) != 0)
1288 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1289 if (cf_util_get_string(c, &hm_xpath) != 0)
1293 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1294 /* this option can take multiple strings arguments in one config line*/
1295 if (check_config_multiple_string_entry(c) != 0) {
1296 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1300 const int params_num = c->values_num;
1301 for (int i = 0; i < params_num; ++i) {
1302 const char *param_name = c->values[i].value.string;
1303 if (strcasecmp(param_name, "hostname") == 0)
1304 hostname_format[i] = hf_hostname;
1305 else if (strcasecmp(param_name, "name") == 0)
1306 hostname_format[i] = hf_name;
1307 else if (strcasecmp(param_name, "uuid") == 0)
1308 hostname_format[i] = hf_uuid;
1309 else if (strcasecmp(param_name, "metadata") == 0)
1310 hostname_format[i] = hf_metadata;
1312 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1318 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1319 hostname_format[i] = hf_none;
1322 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1323 /* this option can handle list of string parameters in one line*/
1324 if (check_config_multiple_string_entry(c) != 0) {
1326 " plugin: Could not get 'PluginInstanceFormat' parameter");
1330 const int params_num = c->values_num;
1331 for (int i = 0; i < params_num; ++i) {
1332 const char *param_name = c->values[i].value.string;
1333 if (strcasecmp(param_name, "none") == 0) {
1334 plugin_instance_format[i] = plginst_none;
1336 } else if (strcasecmp(param_name, "name") == 0)
1337 plugin_instance_format[i] = plginst_name;
1338 else if (strcasecmp(param_name, "uuid") == 0)
1339 plugin_instance_format[i] = plginst_uuid;
1340 else if (strcasecmp(param_name, "metadata") == 0)
1341 plugin_instance_format[i] = plginst_metadata;
1343 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1350 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1351 plugin_instance_format[i] = plginst_none;
1354 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1355 char *format = NULL;
1356 if (cf_util_get_string(c, &format) != 0)
1359 if (strcasecmp(format, "name") == 0)
1360 interface_format = if_name;
1361 else if (strcasecmp(format, "address") == 0)
1362 interface_format = if_address;
1363 else if (strcasecmp(format, "number") == 0)
1364 interface_format = if_number;
1366 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1373 } else if (strcasecmp(c->key, "Instances") == 0) {
1374 if (cf_util_get_int(c, &nr_instances) != 0)
1377 if (nr_instances <= 0) {
1378 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1381 if (nr_instances > NR_INSTANCES_MAX) {
1382 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1383 " use a lower setting or recompile the plugin.",
1384 nr_instances, NR_INSTANCES_MAX);
1388 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1390 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1391 char *ex_str = NULL;
1393 if (cf_util_get_string(c, &ex_str) != 0)
1396 char *exstats[EX_STATS_MAX_FIELDS];
1397 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1398 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1401 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1405 #ifdef HAVE_JOB_STATS
1406 if ((extra_stats & ex_stats_job_stats_completed) &&
1407 (extra_stats & ex_stats_job_stats_background)) {
1408 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1409 "type of job statistics can be collected at the same "
1415 /* ExtraStats parsed successfully */
1417 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1418 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1422 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1423 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1427 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1428 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1433 /* Unrecognised option. */
1434 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1442 static int lv_connect(void) {
1444 /* `conn_string == NULL' is acceptable */
1446 /* virDomainGetFSInfo requires full read-write access connection */
1447 if (extra_stats & ex_stats_fs_info)
1448 conn = virConnectOpen(conn_string);
1451 conn = virConnectOpenReadOnly(conn_string);
1453 c_complain(LOG_ERR, &conn_complain,
1454 PLUGIN_NAME " plugin: Unable to connect: "
1455 "virConnectOpen failed.");
1458 int status = virNodeGetInfo(conn, &nodeinfo);
1460 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1464 c_release(LOG_NOTICE, &conn_complain,
1465 PLUGIN_NAME " plugin: Connection established.");
1469 static void lv_disconnect(void) {
1471 virConnectClose(conn);
1473 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1476 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1477 struct lv_block_stats *bstats) {
1478 #ifdef HAVE_BLOCK_STATS_FLAGS
1480 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1482 VIRT_ERROR(conn, "getting the disk params count");
1486 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1487 if (params == NULL) {
1488 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1494 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1495 VIRT_ERROR(conn, "getting the disk params values");
1497 rc = get_block_stats(bstats, params, nparams);
1500 virTypedParamsClear(params, nparams);
1504 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1505 #endif /* HAVE_BLOCK_STATS_FLAGS */
1508 #ifdef HAVE_PERF_STATS
1509 static void perf_submit(virDomainStatsRecordPtr stats) {
1510 for (int i = 0; i < stats->nparams; ++i) {
1511 /* Replace '.' with '_' in event field to match other metrics' naming
1513 char *c = strchr(stats->params[i].field, '.');
1516 submit(stats->dom, "perf", stats->params[i].field,
1517 &(value_t){.derive = stats->params[i].value.ul}, 1);
1521 static int get_perf_events(virDomainPtr domain) {
1522 virDomainStatsRecordPtr *stats = NULL;
1523 /* virDomainListGetStats requires a NULL terminated list of domains */
1524 virDomainPtr domain_array[] = {domain, NULL};
1527 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1529 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1533 for (int i = 0; i < status; ++i)
1534 perf_submit(stats[i]);
1536 virDomainStatsRecordListFree(stats);
1539 #endif /* HAVE_PERF_STATS */
1541 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1542 unsigned char *cpu_maps, int cpu_map_len) {
1543 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1544 char type_instance[DATA_MAX_NAME_LEN];
1545 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1547 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1548 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1552 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1553 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1554 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1556 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1557 if (vinfo == NULL) {
1558 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1562 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1563 if (cpumaps == NULL) {
1564 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1570 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1572 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1579 for (int i = 0; i < nr_virt_cpu; ++i) {
1580 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1581 if (extra_stats & ex_stats_vcpupin)
1582 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1590 #ifdef HAVE_CPU_STATS
1591 static int get_pcpu_stats(virDomainPtr dom) {
1592 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1594 VIRT_ERROR(conn, "getting the CPU params count");
1598 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1599 if (param == NULL) {
1600 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1604 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1606 virTypedParamsClear(param, nparams);
1608 VIRT_ERROR(conn, "getting the CPU params values");
1612 unsigned long long total_user_cpu_time = 0;
1613 unsigned long long total_syst_cpu_time = 0;
1615 for (int i = 0; i < nparams; ++i) {
1616 if (!strcmp(param[i].field, "user_time"))
1617 total_user_cpu_time = param[i].value.ul;
1618 else if (!strcmp(param[i].field, "system_time"))
1619 total_syst_cpu_time = param[i].value.ul;
1622 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1623 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1626 virTypedParamsClear(param, nparams);
1631 #endif /* HAVE_CPU_STATS */
1633 #ifdef HAVE_DOM_REASON
1635 static void domain_state_submit(virDomainPtr dom, int state, int reason) {
1636 value_t values[] = {
1637 {.gauge = (gauge_t)state}, {.gauge = (gauge_t)reason},
1640 submit(dom, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1643 static int get_domain_state(virDomainPtr domain) {
1644 int domain_state = 0;
1645 int domain_reason = 0;
1647 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1649 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1654 domain_state_submit(domain, domain_state, domain_reason);
1659 #ifdef HAVE_LIST_ALL_DOMAINS
1660 static int get_domain_state_notify(virDomainPtr domain) {
1661 int domain_state = 0;
1662 int domain_reason = 0;
1664 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1666 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1671 if (persistent_notification)
1672 domain_state_submit_notif(domain, domain_state, domain_reason);
1676 #endif /* HAVE_LIST_ALL_DOMAINS */
1677 #endif /* HAVE_DOM_REASON */
1679 static int get_memory_stats(virDomainPtr domain) {
1680 virDomainMemoryStatPtr minfo =
1681 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1682 if (minfo == NULL) {
1683 ERROR("virt plugin: calloc failed.");
1688 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1689 if (mem_stats < 0) {
1690 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1696 for (int i = 0; i < mem_stats; i++)
1697 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1703 #ifdef HAVE_DISK_ERR
1704 static void disk_err_submit(virDomainPtr domain,
1705 virDomainDiskErrorPtr disk_err) {
1706 submit(domain, "disk_error", disk_err->disk,
1707 &(value_t){.gauge = disk_err->error}, 1);
1710 static int get_disk_err(virDomainPtr domain) {
1711 /* Get preferred size of disk errors array */
1712 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1713 if (disk_err_count == -1) {
1715 " plugin: failed to get preferred size of disk errors array");
1720 " plugin: preferred size of disk errors array: %d for domain %s",
1721 disk_err_count, virDomainGetName(domain));
1722 virDomainDiskError disk_err[disk_err_count];
1724 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1725 if (disk_err_count == -1) {
1726 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1731 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1732 disk_err_count, virDomainGetName(domain));
1734 for (int i = 0; i < disk_err_count; ++i) {
1735 disk_err_submit(domain, &disk_err[i]);
1736 sfree(disk_err[i].disk);
1741 #endif /* HAVE_DISK_ERR */
1743 static int get_block_device_stats(struct block_device *block_dev) {
1745 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1749 virDomainBlockInfo binfo;
1750 init_block_info(&binfo);
1752 /* Fetching block info stats only if needed*/
1753 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1754 ex_stats_disk_physical)) {
1755 /* Block info statistics can be only fetched from devices with 'source'
1757 if (block_dev->has_source) {
1758 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1760 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1767 struct lv_block_stats bstats;
1768 init_block_stats(&bstats);
1770 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1771 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1775 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1781 #define NM_ADD_ITEM(_fun, _name, _val) \
1783 ret = _fun(¬if, _name, _val); \
1785 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1790 #define NM_ADD_STR_ITEMS(_items, _size) \
1792 for (size_t _i = 0; _i < _size; ++_i) { \
1794 " plugin: Adding notification metadata name=%s value=%s", \
1795 _items[_i].name, _items[_i].value); \
1796 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1797 _items[_i].value); \
1801 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1802 notification_t notif;
1805 /* Local struct, just for the purpose of this function. */
1806 typedef struct nm_str_item_s {
1811 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1812 nm_str_item_t fs_str_items[] = {
1813 {.name = "mountpoint", .value = fs_info->mountpoint},
1814 {.name = "name", .value = fs_info->name},
1815 {.name = "fstype", .value = fs_info->fstype}};
1817 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1818 fs_dev_alias[i].name = "devAlias";
1819 fs_dev_alias[i].value = fs_info->devAlias[i];
1822 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1823 "file_system", NULL);
1824 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1825 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1826 fs_info->ndevAlias);
1827 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1829 plugin_dispatch_notification(¬if);
1833 plugin_notification_meta_free(notif.meta);
1837 #undef RETURN_ON_ERR
1838 #undef NM_ADD_STR_ITEMS
1840 static int get_fs_info(virDomainPtr domain) {
1841 virDomainFSInfoPtr *fs_info = NULL;
1844 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1845 if (mount_points_cnt == -1) {
1846 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1848 return mount_points_cnt;
1851 for (int i = 0; i < mount_points_cnt; ++i) {
1852 if (fs_info_notify(domain, fs_info[i]) != 0) {
1853 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1854 "for mount point %s",
1855 fs_info[i]->mountpoint);
1858 virDomainFSInfoFree(fs_info[i]);
1865 #endif /* HAVE_FS_INFO */
1867 #ifdef HAVE_JOB_STATS
1868 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1871 if (param->type == VIR_TYPED_PARAM_INT)
1872 vl.derive = param->value.i;
1873 else if (param->type == VIR_TYPED_PARAM_UINT)
1874 vl.derive = param->value.ui;
1875 else if (param->type == VIR_TYPED_PARAM_LLONG)
1876 vl.derive = param->value.l;
1877 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1878 vl.derive = param->value.ul;
1879 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1880 vl.derive = param->value.d;
1881 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1882 vl.derive = param->value.b;
1883 else if (param->type == VIR_TYPED_PARAM_STRING) {
1884 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1887 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1891 submit(domain, "job_stats", param->field, &vl, 1);
1894 static int get_job_stats(virDomainPtr domain) {
1898 virTypedParameterPtr params = NULL;
1899 int flags = (extra_stats & ex_stats_job_stats_completed)
1900 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1903 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1905 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1909 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1911 for (int i = 0; i < nparams; ++i) {
1912 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1914 job_stats_submit(domain, ¶ms[i]);
1917 virTypedParamsFree(params, nparams);
1920 #endif /* HAVE_JOB_STATS */
1922 static int get_domain_metrics(domain_t *domain) {
1923 if (!domain || !domain->ptr) {
1924 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
1929 int status = virDomainGetInfo(domain->ptr, &info);
1931 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1936 if (extra_stats & ex_stats_domain_state) {
1937 #ifdef HAVE_DOM_REASON
1938 /* At this point we already know domain's state from virDomainGetInfo call,
1939 * however it doesn't provide a reason for entering particular state.
1940 * We need to get it from virDomainGetState.
1942 GET_STATS(get_domain_state, "domain reason", domain->ptr);
1946 /* Gather remaining stats only for running domains */
1947 if (info.state != VIR_DOMAIN_RUNNING)
1950 #ifdef HAVE_CPU_STATS
1951 if (extra_stats & ex_stats_pcpu)
1952 get_pcpu_stats(domain->ptr);
1955 cpu_submit(domain, info.cpuTime);
1957 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
1959 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
1960 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
1962 #ifdef HAVE_PERF_STATS
1963 if (extra_stats & ex_stats_perf)
1964 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
1968 if (extra_stats & ex_stats_fs_info)
1969 GET_STATS(get_fs_info, "file system info", domain->ptr);
1972 #ifdef HAVE_DISK_ERR
1973 if (extra_stats & ex_stats_disk_err)
1974 GET_STATS(get_disk_err, "disk errors", domain->ptr);
1977 #ifdef HAVE_JOB_STATS
1979 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
1980 GET_STATS(get_job_stats, "job stats", domain->ptr);
1983 /* Update cached virDomainInfo. It has to be done after cpu_submit */
1984 memcpy(&domain->info, &info, sizeof(domain->info));
1989 static int get_if_dev_stats(struct interface_device *if_dev) {
1990 virDomainInterfaceStatsStruct stats = {0};
1991 char *display_name = NULL;
1994 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
1998 switch (interface_format) {
2000 display_name = if_dev->address;
2003 display_name = if_dev->number;
2007 display_name = if_dev->path;
2010 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2011 sizeof(stats)) != 0) {
2012 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2016 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2017 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2018 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2020 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2021 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2022 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2024 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2025 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2026 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2028 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2029 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2030 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2034 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2035 virDomainPtr dom, int event, int detail,
2036 __attribute__((unused)) void *opaque) {
2037 int domain_state = map_domain_event_to_state(event);
2038 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2039 #ifdef HAVE_DOM_REASON
2040 domain_reason = map_domain_event_detail_to_reason(event, detail);
2042 domain_state_submit_notif(dom, domain_state, domain_reason);
2047 static int register_event_impl(void) {
2048 if (virEventRegisterDefaultImpl() < 0) {
2049 virErrorPtr err = virGetLastError();
2051 " plugin: error while event implementation registering: %s",
2052 err && err->message ? err->message : "Unknown error");
2059 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2060 const bool active) {
2061 assert(thread_data != NULL);
2062 pthread_mutex_lock(&thread_data->active_mutex);
2063 thread_data->is_active = active;
2064 pthread_mutex_unlock(&thread_data->active_mutex);
2067 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2068 bool active = false;
2070 assert(thread_data != NULL);
2071 pthread_mutex_lock(&thread_data->active_mutex);
2072 active = thread_data->is_active;
2073 pthread_mutex_unlock(&thread_data->active_mutex);
2078 /* worker function running default event implementation */
2079 static void *event_loop_worker(void *arg) {
2080 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2082 while (virt_notif_thread_is_active(thread_data)) {
2083 if (virEventRunDefaultImpl() < 0) {
2084 virErrorPtr err = virGetLastError();
2085 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2086 err && err->message ? err->message : "Unknown error");
2093 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2096 assert(thread_data != NULL);
2097 ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2099 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2104 * '0' and positive integers are meaningful ID's, therefore setting
2105 * domain_event_cb_id to '-1'
2107 thread_data->domain_event_cb_id = -1;
2108 pthread_mutex_lock(&thread_data->active_mutex);
2109 thread_data->is_active = false;
2110 pthread_mutex_unlock(&thread_data->active_mutex);
2115 /* register domain event callback and start event loop thread */
2116 static int start_event_loop(virt_notif_thread_t *thread_data) {
2117 assert(thread_data != NULL);
2118 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2119 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2120 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2121 if (thread_data->domain_event_cb_id == -1) {
2122 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2126 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2128 virt_notif_thread_set_active(thread_data, 1);
2129 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2131 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2132 virt_notif_thread_set_active(thread_data, 0);
2133 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2134 thread_data->domain_event_cb_id = -1;
2141 /* stop event loop thread and deregister callback */
2142 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2144 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2147 if (virt_notif_thread_is_active(thread_data)) {
2148 virt_notif_thread_set_active(thread_data, 0);
2149 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2150 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2153 /* ... and de-registering event handler */
2154 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2155 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2156 thread_data->domain_event_cb_id = -1;
2160 static int persistent_domains_state_notification(void) {
2163 #ifdef HAVE_LIST_ALL_DOMAINS
2164 virDomainPtr *domains = NULL;
2165 n = virConnectListAllDomains(conn, &domains,
2166 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2168 VIRT_ERROR(conn, "reading list of persistent domains");
2171 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2172 /* Fetch each persistent domain's state and notify it */
2174 for (int i = 0; i < n; ++i) {
2175 status = get_domain_state_notify(domains[i]);
2178 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2179 virDomainGetName(domains[i]));
2181 virDomainFree(domains[i]);
2185 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2189 n = virConnectNumOfDomains(conn);
2192 /* Get list of domains. */
2193 domids = calloc(n, sizeof(*domids));
2194 if (domids == NULL) {
2195 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2198 n = virConnectListDomains(conn, domids, n);
2200 VIRT_ERROR(conn, "reading list of domains");
2204 /* Fetch info of each active domain and notify it */
2205 for (int i = 0; i < n; ++i) {
2207 virDomainPtr dom = NULL;
2208 dom = virDomainLookupByID(conn, domids[i]);
2210 VIRT_ERROR(conn, "virDomainLookupByID");
2211 /* Could be that the domain went away -- ignore it anyway. */
2214 status = virDomainGetInfo(dom, &info);
2216 /* virDomainGetState is not available. Submit 0, which corresponds to
2217 * unknown reason. */
2218 domain_state_submit_notif(dom, info.state, 0);
2220 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2232 static int lv_read(user_data_t *ud) {
2234 struct lv_read_instance *inst = NULL;
2235 struct lv_read_state *state = NULL;
2237 if (ud->data == NULL) {
2238 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2243 state = &inst->read_state;
2245 bool reconnect = conn == NULL ? true : false;
2246 /* event implementation must be registered before connection is opened */
2247 if (inst->id == 0) {
2248 if (!persistent_notification && reconnect)
2249 if (register_event_impl() != 0)
2252 if (lv_connect() < 0)
2255 if (!persistent_notification && reconnect && conn != NULL)
2256 if (start_event_loop(¬if_thread) != 0)
2262 /* Need to refresh domain or device lists? */
2263 if ((last_refresh == (time_t)0) ||
2264 ((interval > 0) && ((last_refresh + interval) <= t))) {
2265 if (refresh_lists(inst) != 0) {
2266 if (inst->id == 0) {
2267 if (!persistent_notification)
2268 stop_event_loop(¬if_thread);
2276 /* persistent domains state notifications are handled by instance 0 */
2277 if (inst->id == 0 && persistent_notification) {
2278 int status = persistent_domains_state_notification();
2280 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2281 "returned with status %i",
2286 for (int i = 0; i < state->nr_domains; ++i)
2287 DEBUG(PLUGIN_NAME " plugin: domain %s",
2288 virDomainGetName(state->domains[i].ptr));
2289 for (int i = 0; i < state->nr_block_devices; ++i)
2290 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2291 virDomainGetName(state->block_devices[i].dom),
2292 state->block_devices[i].path);
2293 for (int i = 0; i < state->nr_interface_devices; ++i)
2294 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2295 virDomainGetName(state->interface_devices[i].dom),
2296 state->interface_devices[i].path);
2299 /* Get domains' metrics */
2300 for (int i = 0; i < state->nr_domains; ++i) {
2301 domain_t *dom = &state->domains[i];
2304 status = get_domain_metrics(dom);
2305 #ifdef HAVE_DOM_REASON
2307 status = get_domain_state(dom->ptr);
2311 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2312 virDomainGetName(dom->ptr));
2315 /* Get block device stats for each domain. */
2316 for (int i = 0; i < state->nr_block_devices; ++i) {
2317 int status = get_block_device_stats(&state->block_devices[i]);
2320 " plugin: failed to get stats for block device (%s) in domain %s",
2321 state->block_devices[i].path,
2322 virDomainGetName(state->block_devices[i].dom));
2325 /* Get interface stats for each domain. */
2326 for (int i = 0; i < state->nr_interface_devices; ++i) {
2327 int status = get_if_dev_stats(&state->interface_devices[i]);
2331 " plugin: failed to get interface stats for device (%s) in domain %s",
2332 state->interface_devices[i].path,
2333 virDomainGetName(state->interface_devices[i].dom));
2339 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2340 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2341 struct lv_read_instance *inst = &(lv_ud->inst);
2343 memset(lv_ud, 0, sizeof(*lv_ud));
2345 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2348 user_data_t *ud = &(lv_ud->ud);
2350 ud->free_func = NULL;
2352 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2354 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2357 static void lv_clean_read_state(struct lv_read_state *state) {
2358 free_block_devices(state);
2359 free_interface_devices(state);
2360 free_domains(state);
2363 static void lv_fini_instance(size_t i) {
2364 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2365 struct lv_read_state *state = &(inst->read_state);
2367 lv_clean_read_state(state);
2369 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2372 static int lv_init(void) {
2373 if (virInitialize() != 0)
2376 /* Init ignorelists if there was no explicit configuration */
2377 if (lv_init_ignorelists() != 0)
2380 /* event implementation must be registered before connection is opened */
2381 if (!persistent_notification)
2382 if (register_event_impl() != 0)
2385 if (lv_connect() != 0)
2388 if (!persistent_notification) {
2389 virt_notif_thread_init(¬if_thread);
2390 if (start_event_loop(¬if_thread) != 0)
2394 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2396 for (int i = 0; i < nr_instances; ++i)
2397 if (lv_init_instance(i, lv_read) != 0)
2404 * returns 0 on success and <0 on error
2406 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2408 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2409 xmlXPathObjectPtr xpath_obj = NULL;
2410 xmlNodePtr xml_node = NULL;
2414 err = xmlXPathRegisterNs(xpath_ctx,
2415 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2416 (const xmlChar *)METADATA_VM_PARTITION_URI);
2418 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2419 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2423 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2424 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2425 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2426 if (xpath_obj == NULL) {
2427 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2428 xpath_str, dom_name);
2432 if (xpath_obj->type != XPATH_NODESET) {
2433 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2434 "(wanted %d) on domain %s",
2435 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2440 * from now on there is no real error, it's ok if a domain
2441 * doesn't have the metadata partition tag.
2444 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2445 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2446 "expected=1 on domain %s",
2448 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2451 xml_node = xpath_obj->nodesetval->nodeTab[0];
2452 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2456 /* deregister to clean up */
2457 err = xmlXPathRegisterNs(xpath_ctx,
2458 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2460 /* we can't really recover here */
2462 " plugin: deregistration of namespace %s failed for domain %s",
2463 METADATA_VM_PARTITION_PREFIX, dom_name);
2466 xmlXPathFreeObject(xpath_obj);
2471 static int is_known_tag(const char *dom_tag) {
2472 for (int i = 0; i < nr_instances; ++i)
2473 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2478 static int lv_instance_include_domain(struct lv_read_instance *inst,
2479 const char *dom_name,
2480 const char *dom_tag) {
2481 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2484 /* instance#0 will always be there, so it is in charge of extra duties */
2485 if (inst->id == 0) {
2486 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2487 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2488 "with unknown tag '%s'",
2489 inst->tag, dom_name, dom_tag);
2497 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2498 const char *domname,
2499 xmlXPathContextPtr xpath_ctx) {
2500 xmlXPathObjectPtr xpath_obj =
2501 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2503 if (xpath_obj == NULL) {
2504 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2509 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2510 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2514 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2515 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2516 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2517 char *path_str = NULL;
2518 char *source_str = NULL;
2523 /* Fetching path and source for block device */
2524 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2525 if (child->type != XML_ELEMENT_NODE)
2528 /* we are interested only in either "target" or "source" elements */
2529 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2530 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2531 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2532 /* name of the source is located in "dev" or "file" element (it depends
2533 * on type of source). Trying "dev" at first*/
2534 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2536 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2538 /* ignoring any other element*/
2541 /* source_str will be interpreted as a device path if blockdevice_format
2542 * param is set to 'source'. */
2543 const char *device_path =
2544 (blockdevice_format == source) ? source_str : path_str;
2547 /* no path found and we can't add block_device without it */
2548 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2549 "domain %s - disk device will be ignored in reports",
2554 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2555 /* we only have to store information whether 'source' exists or not */
2556 bool has_source = (source_str != NULL) ? true : false;
2558 add_block_device(state, dom, device_path, has_source);
2566 xmlFree(source_str);
2570 xmlXPathFreeObject(xpath_obj);
2573 static void lv_add_network_interfaces(struct lv_read_state *state,
2574 virDomainPtr dom, const char *domname,
2575 xmlXPathContextPtr xpath_ctx) {
2576 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2577 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2579 if (xpath_obj == NULL)
2582 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2583 xmlXPathFreeObject(xpath_obj);
2587 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2589 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2591 char *address = NULL;
2592 const int itf_number = j + 1;
2594 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2598 for (xmlNodePtr child = xml_interface->children; child;
2599 child = child->next) {
2600 if (child->type != XML_ELEMENT_NODE)
2603 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2604 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2607 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2608 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2614 bool device_ignored = false;
2615 switch (interface_format) {
2617 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2618 device_ignored = true;
2621 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2622 device_ignored = true;
2625 char number_string[4];
2626 snprintf(number_string, sizeof(number_string), "%d", itf_number);
2627 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2629 device_ignored = true;
2632 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2636 if (!device_ignored)
2637 add_interface_device(state, dom, path, address, itf_number);
2644 xmlXPathFreeObject(xpath_obj);
2647 static bool is_domain_ignored(virDomainPtr dom) {
2648 const char *domname = virDomainGetName(dom);
2650 if (domname == NULL) {
2651 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2655 if (ignorelist_match(il_domains, domname) != 0) {
2657 " plugin: ignoring domain '%s' because of ignorelist option",
2665 static int refresh_lists(struct lv_read_instance *inst) {
2666 struct lv_read_state *state = &inst->read_state;
2669 #ifndef HAVE_LIST_ALL_DOMAINS
2670 n = virConnectNumOfDomains(conn);
2672 VIRT_ERROR(conn, "reading number of domains");
2677 lv_clean_read_state(state);
2679 #ifndef HAVE_LIST_ALL_DOMAINS
2684 #ifdef HAVE_LIST_ALL_DOMAINS
2685 virDomainPtr *domains, *domains_inactive;
2686 int m = virConnectListAllDomains(conn, &domains_inactive,
2687 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2688 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2690 /* Get list of domains. */
2691 int *domids = calloc(n, sizeof(*domids));
2692 if (domids == NULL) {
2693 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2697 n = virConnectListDomains(conn, domids, n);
2701 VIRT_ERROR(conn, "reading list of domains");
2702 #ifndef HAVE_LIST_ALL_DOMAINS
2705 for (int i = 0; i < m; ++i)
2706 virDomainFree(domains_inactive[i]);
2707 sfree(domains_inactive);
2712 #ifdef HAVE_LIST_ALL_DOMAINS
2713 for (int i = 0; i < m; ++i)
2714 if (is_domain_ignored(domains_inactive[i]) ||
2715 add_domain(state, domains_inactive[i], 0) < 0) {
2716 /* domain ignored or failed during adding to domains list*/
2717 virDomainFree(domains_inactive[i]);
2718 domains_inactive[i] = NULL;
2723 /* Fetch each domain and add it to the list, unless ignore. */
2724 for (int i = 0; i < n; ++i) {
2726 #ifdef HAVE_LIST_ALL_DOMAINS
2727 virDomainPtr dom = domains[i];
2729 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2731 VIRT_ERROR(conn, "virDomainLookupByID");
2732 /* Could be that the domain went away -- ignore it anyway. */
2737 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2739 * domain ignored or failed during adding to domains list
2741 * When domain is already tracked, then there is
2742 * no problem with memory handling (will be freed
2743 * with the rest of domains cached data)
2744 * But in case of error like this (error occurred
2745 * before adding domain to track) we have to take
2746 * care it ourselves and call virDomainFree
2752 const char *domname = virDomainGetName(dom);
2753 if (domname == NULL) {
2754 VIRT_ERROR(conn, "virDomainGetName");
2759 int status = virDomainGetInfo(dom, &info);
2761 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2766 if (info.state != VIR_DOMAIN_RUNNING) {
2767 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2771 /* Get a list of devices for this domain. */
2772 xmlDocPtr xml_doc = NULL;
2773 xmlXPathContextPtr xpath_ctx = NULL;
2775 char *xml = virDomainGetXMLDesc(dom, 0);
2777 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2781 /* Yuck, XML. Parse out the devices. */
2782 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2783 if (xml_doc == NULL) {
2784 VIRT_ERROR(conn, "xmlReadDoc");
2788 xpath_ctx = xmlXPathNewContext(xml_doc);
2790 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2791 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2792 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2796 if (!lv_instance_include_domain(inst, domname, tag))
2799 /* Block devices. */
2800 if (report_block_devices)
2801 lv_add_block_devices(state, dom, domname, xpath_ctx);
2803 /* Network interfaces. */
2804 if (report_network_interfaces)
2805 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2809 xmlXPathFreeContext(xpath_ctx);
2811 xmlFreeDoc(xml_doc);
2815 #ifdef HAVE_LIST_ALL_DOMAINS
2816 /* NOTE: domains_active and domains_inactive data will be cleared during
2817 refresh of all domains (inside lv_clean_read_state function) so we need
2818 to free here only allocated arrays */
2820 sfree(domains_inactive);
2827 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2828 " domains=%i block_devices=%i iface_devices=%i",
2829 inst->tag, state->nr_domains, state->nr_block_devices,
2830 state->nr_interface_devices);
2835 static void free_domains(struct lv_read_state *state) {
2836 if (state->domains) {
2837 for (int i = 0; i < state->nr_domains; ++i)
2838 virDomainFree(state->domains[i].ptr);
2839 sfree(state->domains);
2841 state->domains = NULL;
2842 state->nr_domains = 0;
2845 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2847 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2849 domain_t *new_ptr = realloc(state->domains, new_size);
2850 if (new_ptr == NULL) {
2851 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
2855 state->domains = new_ptr;
2856 state->domains[state->nr_domains].ptr = dom;
2857 state->domains[state->nr_domains].active = active;
2858 memset(&state->domains[state->nr_domains].info, 0,
2859 sizeof(state->domains[state->nr_domains].info));
2861 return state->nr_domains++;
2864 static void free_block_devices(struct lv_read_state *state) {
2865 if (state->block_devices) {
2866 for (int i = 0; i < state->nr_block_devices; ++i)
2867 sfree(state->block_devices[i].path);
2868 sfree(state->block_devices);
2870 state->block_devices = NULL;
2871 state->nr_block_devices = 0;
2874 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2875 const char *path, bool has_source) {
2877 char *path_copy = strdup(path);
2882 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2884 struct block_device *new_ptr = realloc(state->block_devices, new_size);
2885 if (new_ptr == NULL) {
2889 state->block_devices = new_ptr;
2890 state->block_devices[state->nr_block_devices].dom = dom;
2891 state->block_devices[state->nr_block_devices].path = path_copy;
2892 state->block_devices[state->nr_block_devices].has_source = has_source;
2893 return state->nr_block_devices++;
2896 static void free_interface_devices(struct lv_read_state *state) {
2897 if (state->interface_devices) {
2898 for (int i = 0; i < state->nr_interface_devices; ++i) {
2899 sfree(state->interface_devices[i].path);
2900 sfree(state->interface_devices[i].address);
2901 sfree(state->interface_devices[i].number);
2903 sfree(state->interface_devices);
2905 state->interface_devices = NULL;
2906 state->nr_interface_devices = 0;
2909 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2910 const char *path, const char *address,
2911 unsigned int number) {
2913 if ((path == NULL) || (address == NULL))
2916 char *path_copy = strdup(path);
2920 char *address_copy = strdup(address);
2921 if (!address_copy) {
2926 char number_string[21];
2927 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2928 char *number_copy = strdup(number_string);
2931 sfree(address_copy);
2936 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2938 struct interface_device *new_ptr =
2939 realloc(state->interface_devices, new_size);
2940 if (new_ptr == NULL) {
2942 sfree(address_copy);
2947 state->interface_devices = new_ptr;
2948 state->interface_devices[state->nr_interface_devices].dom = dom;
2949 state->interface_devices[state->nr_interface_devices].path = path_copy;
2950 state->interface_devices[state->nr_interface_devices].address = address_copy;
2951 state->interface_devices[state->nr_interface_devices].number = number_copy;
2952 return state->nr_interface_devices++;
2955 static int ignore_device_match(ignorelist_t *il, const char *domname,
2956 const char *devpath) {
2957 if ((domname == NULL) || (devpath == NULL))
2960 size_t n = strlen(domname) + strlen(devpath) + 2;
2961 char *name = malloc(n);
2963 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2966 snprintf(name, n, "%s:%s", domname, devpath);
2967 int r = ignorelist_match(il, name);
2972 static int lv_shutdown(void) {
2973 for (int i = 0; i < nr_instances; ++i) {
2974 lv_fini_instance(i);
2977 if (!persistent_notification)
2978 stop_event_loop(¬if_thread);
2982 ignorelist_free(il_domains);
2984 ignorelist_free(il_block_devices);
2985 il_block_devices = NULL;
2986 ignorelist_free(il_interface_devices);
2987 il_interface_devices = NULL;
2992 void module_register(void) {
2993 plugin_register_complex_config("virt", lv_config);
2994 plugin_register_init(PLUGIN_NAME, lv_init);
2995 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);