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 (Sep 2012)
73 Note that LIBVIR_CHECK_VERSION appeared a year later (Dec 2013,
75 so in some systems which actually have virConnectListAllDomains()
78 #if LIBVIR_CHECK_VERSION(0, 10, 2)
79 #define HAVE_LIST_ALL_DOMAINS 1
82 #if LIBVIR_CHECK_VERSION(1, 0, 1)
83 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
86 #if LIBVIR_CHECK_VERSION(1, 1, 1)
87 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
90 #if LIBVIR_CHECK_VERSION(1, 2, 9)
91 #define HAVE_JOB_STATS 1
94 #if LIBVIR_CHECK_VERSION(1, 2, 10)
95 #define HAVE_DOM_REASON_CRASHED 1
98 #if LIBVIR_CHECK_VERSION(1, 2, 11)
99 #define HAVE_FS_INFO 1
102 #if LIBVIR_CHECK_VERSION(1, 2, 15)
103 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
106 #if LIBVIR_CHECK_VERSION(1, 3, 3)
107 #define HAVE_PERF_STATS 1
108 #define HAVE_DOM_REASON_POSTCOPY 1
111 #endif /* LIBVIR_CHECK_VERSION */
113 /* structure used for aggregating notification-thread data*/
114 typedef struct virt_notif_thread_s {
115 pthread_t event_loop_tid;
116 int domain_event_cb_id;
117 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
119 } virt_notif_thread_t;
121 /* PersistentNotification is false by default */
122 static bool persistent_notification = false;
124 static bool report_block_devices = true;
125 static bool report_network_interfaces = true;
127 /* Thread used for handling libvirt notifications events */
128 static virt_notif_thread_t notif_thread;
130 const char *domain_states[] = {
131 [VIR_DOMAIN_NOSTATE] = "no state",
132 [VIR_DOMAIN_RUNNING] = "the domain is running",
133 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
134 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
135 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
136 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
137 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
138 #ifdef HAVE_DOM_STATE_PMSUSPENDED
139 [VIR_DOMAIN_PMSUSPENDED] =
140 "the domain is suspended by guest power management",
144 static int map_domain_event_to_state(int event) {
147 case VIR_DOMAIN_EVENT_STARTED:
148 ret = VIR_DOMAIN_RUNNING;
150 case VIR_DOMAIN_EVENT_SUSPENDED:
151 ret = VIR_DOMAIN_PAUSED;
153 case VIR_DOMAIN_EVENT_RESUMED:
154 ret = VIR_DOMAIN_RUNNING;
156 case VIR_DOMAIN_EVENT_STOPPED:
157 ret = VIR_DOMAIN_SHUTOFF;
159 case VIR_DOMAIN_EVENT_SHUTDOWN:
160 ret = VIR_DOMAIN_SHUTDOWN;
162 #ifdef HAVE_DOM_STATE_PMSUSPENDED
163 case VIR_DOMAIN_EVENT_PMSUSPENDED:
164 ret = VIR_DOMAIN_PMSUSPENDED;
167 #ifdef HAVE_DOM_REASON_CRASHED
168 case VIR_DOMAIN_EVENT_CRASHED:
169 ret = VIR_DOMAIN_CRASHED;
173 ret = VIR_DOMAIN_NOSTATE;
178 #ifdef HAVE_DOM_REASON
179 static int map_domain_event_detail_to_reason(int event, int detail) {
182 case VIR_DOMAIN_EVENT_STARTED:
184 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
185 ret = VIR_DOMAIN_RUNNING_BOOTED;
187 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
189 ret = VIR_DOMAIN_RUNNING_MIGRATED;
191 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
192 ret = VIR_DOMAIN_RUNNING_RESTORED;
194 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
195 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
197 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
198 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
199 ret = VIR_DOMAIN_RUNNING_WAKEUP;
203 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
206 case VIR_DOMAIN_EVENT_SUSPENDED:
208 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
210 ret = VIR_DOMAIN_PAUSED_USER;
212 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
214 ret = VIR_DOMAIN_PAUSED_MIGRATION;
216 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
218 ret = VIR_DOMAIN_PAUSED_IOERROR;
220 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
222 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
224 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
226 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
228 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
230 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
232 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
234 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
236 #ifdef HAVE_DOM_REASON_POSTCOPY
237 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
239 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
241 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
243 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
247 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
250 case VIR_DOMAIN_EVENT_RESUMED:
252 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
254 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
256 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
258 ret = VIR_DOMAIN_RUNNING_MIGRATED;
260 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
261 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
263 #ifdef HAVE_DOM_REASON_POSTCOPY
264 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
265 running in post-copy mode */
266 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
270 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
273 case VIR_DOMAIN_EVENT_STOPPED:
275 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
276 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
278 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
279 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
281 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
282 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
284 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
285 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
287 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
288 ret = VIR_DOMAIN_SHUTOFF_SAVED;
290 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
291 ret = VIR_DOMAIN_SHUTOFF_FAILED;
293 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
294 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
297 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
300 case VIR_DOMAIN_EVENT_SHUTDOWN:
302 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
304 ret = VIR_DOMAIN_SHUTDOWN_USER;
307 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
310 #ifdef HAVE_DOM_STATE_PMSUSPENDED
311 case VIR_DOMAIN_EVENT_PMSUSPENDED:
313 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
315 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
317 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
318 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
321 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
325 case VIR_DOMAIN_EVENT_CRASHED:
327 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
328 ret = VIR_DOMAIN_CRASHED_PANICKED;
331 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
335 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
340 #define DOMAIN_STATE_REASON_MAX_SIZE 20
341 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
342 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
343 "the reason is unknown",
345 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
346 "the reason is unknown",
347 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
348 "normal startup from boot",
349 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
350 "migrated from another host",
351 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
352 "restored from a state file",
353 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
354 "restored from snapshot",
355 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
356 "returned from paused state",
357 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
358 "returned from migration",
359 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
360 "returned from failed save process",
361 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
362 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
363 "returned from pmsuspended due to wakeup event",
365 #ifdef HAVE_DOM_REASON_CRASHED
366 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
367 "resumed from crashed",
369 #ifdef HAVE_DOM_REASON_POSTCOPY
370 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
371 "running in post-copy migration mode",
373 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
374 "the reason is unknown",
376 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
377 "the reason is unknown",
378 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
379 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
380 "paused for offline migration",
381 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
382 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
383 "paused for offline core dump",
384 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
385 "paused due to a disk I/O error",
386 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
387 "paused due to a watchdog event",
388 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
389 "paused after restoring from snapshot",
390 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
391 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
392 "paused during shutdown process",
394 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
395 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
396 "paused while creating a snapshot",
398 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
399 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
400 "paused due to a guest crash",
402 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
403 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
404 "the domain is being started",
406 #ifdef HAVE_DOM_REASON_POSTCOPY
407 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
408 "paused for post-copy migration",
409 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
410 "paused after failed post-copy",
412 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
413 "the reason is unknown",
414 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
415 "shutting down on user request",
417 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
418 "the reason is unknown",
419 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
420 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
421 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
422 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
423 "migrated to another host",
424 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
425 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
426 "domain failed to start",
427 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
428 "restored from a snapshot which was taken while domain was shutoff",
430 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
431 "the reason is unknown",
432 #ifdef VIR_DOMAIN_CRASHED_PANICKED
433 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
436 #ifdef HAVE_DOM_STATE_PMSUSPENDED
437 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
438 "the reason is unknown",
441 #endif /* HAVE_DOM_REASON */
443 #define NANOSEC_IN_SEC 1e9
445 #define GET_STATS(_f, _name, ...) \
447 status = _f(__VA_ARGS__); \
449 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
453 static virConnectPtr conn;
454 static char *conn_string;
455 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
457 /* Node information required for %CPU */
458 static virNodeInfo nodeinfo;
460 /* Seconds between list refreshes, 0 disables completely. */
461 static int interval = 60;
463 /* List of domains, if specified. */
464 static ignorelist_t *il_domains;
465 /* List of block devices, if specified. */
466 static ignorelist_t *il_block_devices;
467 /* List of network interface devices, if specified. */
468 static ignorelist_t *il_interface_devices;
470 static int ignore_device_match(ignorelist_t *, const char *domname,
471 const char *devpath);
473 /* Actual list of block devices found on last refresh. */
474 struct block_device {
475 virDomainPtr dom; /* domain */
476 char *path; /* name of block device */
477 bool has_source; /* information whether source is defined or not */
480 /* Actual list of network interfaces found on last refresh. */
481 struct interface_device {
482 virDomainPtr dom; /* domain */
483 char *path; /* name of interface device */
484 char *address; /* mac address of interface device */
485 char *number; /* interface device number */
488 typedef struct domain_s {
494 struct lv_read_state {
495 /* Actual list of domains found on last refresh. */
499 struct block_device *block_devices;
500 int nr_block_devices;
502 struct interface_device *interface_devices;
503 int nr_interface_devices;
506 static void free_domains(struct lv_read_state *state);
507 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
510 static void free_block_devices(struct lv_read_state *state);
511 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
512 const char *path, bool has_source);
514 static void free_interface_devices(struct lv_read_state *state);
515 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
516 const char *path, const char *address,
517 unsigned int number);
519 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
520 #define METADATA_VM_PARTITION_ELEMENT "tag"
521 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
523 #define BUFFER_MAX_LEN 256
524 #define PARTITION_TAG_MAX_LEN 32
526 struct lv_read_instance {
527 struct lv_read_state read_state;
528 char tag[PARTITION_TAG_MAX_LEN];
532 struct lv_user_data {
533 struct lv_read_instance inst;
537 #define NR_INSTANCES_DEFAULT 1
538 #define NR_INSTANCES_MAX 128
539 static int nr_instances = NR_INSTANCES_DEFAULT;
540 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
542 /* HostnameFormat. */
543 #define HF_MAX_FIELDS 4
545 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
547 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
549 /* PluginInstanceFormat */
550 #define PLGINST_MAX_FIELDS 3
559 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
562 /* HostnameMetadataNS && HostnameMetadataXPath */
563 static char *hm_xpath;
566 /* BlockDeviceFormat */
567 enum bd_field { target, source };
569 /* InterfaceFormat. */
570 enum if_field { if_address, if_name, if_number };
573 #define EX_STATS_MAX_FIELDS 15
576 ex_stats_disk = 1 << 0,
577 ex_stats_pcpu = 1 << 1,
578 ex_stats_cpu_util = 1 << 2,
579 ex_stats_domain_state = 1 << 3,
580 #ifdef HAVE_PERF_STATS
581 ex_stats_perf = 1 << 4,
583 ex_stats_vcpupin = 1 << 5,
585 ex_stats_disk_err = 1 << 6,
588 ex_stats_fs_info = 1 << 7,
590 #ifdef HAVE_JOB_STATS
591 ex_stats_job_stats_completed = 1 << 8,
592 ex_stats_job_stats_background = 1 << 9,
594 ex_stats_disk_allocation = 1 << 10,
595 ex_stats_disk_capacity = 1 << 11,
596 ex_stats_disk_physical = 1 << 12
599 static unsigned int extra_stats = ex_stats_none;
601 struct ex_stats_item {
605 static const struct ex_stats_item ex_stats_table[] = {
606 {"disk", ex_stats_disk},
607 {"pcpu", ex_stats_pcpu},
608 {"cpu_util", ex_stats_cpu_util},
609 {"domain_state", ex_stats_domain_state},
610 #ifdef HAVE_PERF_STATS
611 {"perf", ex_stats_perf},
613 {"vcpupin", ex_stats_vcpupin},
615 {"disk_err", ex_stats_disk_err},
618 {"fs_info", ex_stats_fs_info},
620 #ifdef HAVE_JOB_STATS
621 {"job_stats_completed", ex_stats_job_stats_completed},
622 {"job_stats_background", ex_stats_job_stats_background},
624 {"disk_allocation", ex_stats_disk_allocation},
625 {"disk_capacity", ex_stats_disk_capacity},
626 {"disk_physical", ex_stats_disk_physical},
627 {NULL, ex_stats_none},
630 /* BlockDeviceFormatBasename */
631 static bool blockdevice_format_basename;
632 static enum bd_field blockdevice_format = target;
633 static enum if_field interface_format = if_name;
635 /* Time that we last refreshed. */
636 static time_t last_refresh = (time_t)0;
638 static int refresh_lists(struct lv_read_instance *inst);
640 struct lv_block_stats {
641 virDomainBlockStatsStruct bi;
643 long long rd_total_times;
644 long long wr_total_times;
647 long long fl_total_times;
650 static void init_block_stats(struct lv_block_stats *bstats) {
654 bstats->bi.rd_req = -1;
655 bstats->bi.wr_req = -1;
656 bstats->bi.rd_bytes = -1;
657 bstats->bi.wr_bytes = -1;
659 bstats->rd_total_times = -1;
660 bstats->wr_total_times = -1;
662 bstats->fl_total_times = -1;
665 static void init_block_info(virDomainBlockInfoPtr binfo) {
666 binfo->allocation = -1;
667 binfo->capacity = -1;
668 binfo->physical = -1;
671 #ifdef HAVE_BLOCK_STATS_FLAGS
673 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
674 if (!strcmp(param[i].field, NAME)) { \
675 bstats->FIELD = param[i].value.l; \
679 static int get_block_stats(struct lv_block_stats *bstats,
680 virTypedParameterPtr param, int nparams) {
681 if (bstats == NULL || param == NULL)
684 for (int i = 0; i < nparams; ++i) {
685 /* ignore type. Everything must be LLONG anyway. */
686 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
687 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
688 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
689 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
690 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
691 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
692 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
693 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
699 #undef GET_BLOCK_STATS_VALUE
701 #endif /* HAVE_BLOCK_STATS_FLAGS */
703 /* ERROR(...) macro for virterrors. */
704 #define VIRT_ERROR(conn, s) \
707 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
709 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
712 static char *metadata_get_hostname(virDomainPtr dom) {
713 const char *xpath_str = NULL;
714 if (hm_xpath == NULL)
715 xpath_str = "/instance/name/text()";
717 xpath_str = hm_xpath;
719 const char *namespace = NULL;
721 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
726 char *metadata_str = virDomainGetMetadata(
727 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
728 if (metadata_str == NULL) {
732 char *hostname = NULL;
733 xmlXPathContextPtr xpath_ctx = NULL;
734 xmlXPathObjectPtr xpath_obj = NULL;
735 xmlNodePtr xml_node = NULL;
738 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
739 if (xml_doc == NULL) {
740 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
744 xpath_ctx = xmlXPathNewContext(xml_doc);
745 if (xpath_ctx == NULL) {
746 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
750 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
751 if (xpath_obj == NULL) {
752 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
757 if (xpath_obj->type != XPATH_NODESET) {
758 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
759 "(wanted %d) for metadata",
760 xpath_str, xpath_obj->type, XPATH_NODESET);
764 // TODO(sileht): We can support || operator by looping on nodes here
765 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
766 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
767 "expected=1 for metadata",
769 (xpath_obj->nodesetval == NULL) ? 0
770 : xpath_obj->nodesetval->nodeNr);
774 xml_node = xpath_obj->nodesetval->nodeTab[0];
775 if (xml_node->type == XML_TEXT_NODE) {
776 hostname = strdup((const char *)xml_node->content);
777 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
778 hostname = strdup((const char *)xml_node->children->content);
780 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
781 xpath_str, xml_node->type);
785 if (hostname == NULL) {
786 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
792 xmlXPathFreeObject(xpath_obj);
794 xmlXPathFreeContext(xpath_ctx);
801 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
803 char uuid[VIR_UUID_STRING_BUFLEN];
805 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
809 /* Construct the hostname field according to HostnameFormat. */
810 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
811 if (hostname_format[i] == hf_none)
815 SSTRNCAT(vl->host, ":", sizeof(vl->host));
817 switch (hostname_format[i]) {
821 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
824 name = virDomainGetName(dom);
826 SSTRNCAT(vl->host, name, sizeof(vl->host));
829 if (virDomainGetUUIDString(dom, uuid) == 0)
830 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
833 name = metadata_get_hostname(dom);
835 SSTRNCAT(vl->host, name, sizeof(vl->host));
840 /* Construct the plugin instance field according to PluginInstanceFormat. */
841 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
842 if (plugin_instance_format[i] == plginst_none)
846 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
848 switch (plugin_instance_format[i]) {
852 name = virDomainGetName(dom);
854 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
857 if (virDomainGetUUIDString(dom, uuid) == 0)
858 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
860 case plginst_metadata:
861 name = metadata_get_hostname(dom);
863 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
868 } /* void init_value_list */
870 static int init_notif(notification_t *notif, const virDomainPtr domain,
871 int severity, const char *msg, const char *type,
872 const char *type_instance) {
873 value_list_t vl = VALUE_LIST_INIT;
876 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
880 init_value_list(&vl, domain);
881 notification_init(notif, severity, msg, vl.host, vl.plugin,
882 vl.plugin_instance, type, type_instance);
883 notif->time = cdtime();
887 static void submit_notif(const virDomainPtr domain, int severity,
888 const char *msg, const char *type,
889 const char *type_instance) {
890 notification_t notif;
892 init_notif(¬if, domain, severity, msg, type, type_instance);
893 plugin_dispatch_notification(¬if);
895 plugin_notification_meta_free(notif.meta);
898 static void submit(virDomainPtr dom, char const *type,
899 char const *type_instance, value_t *values,
901 value_list_t vl = VALUE_LIST_INIT;
902 init_value_list(&vl, dom);
905 vl.values_len = values_len;
907 sstrncpy(vl.type, type, sizeof(vl.type));
908 if (type_instance != NULL)
909 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
911 plugin_dispatch_values(&vl);
914 static void memory_submit(virDomainPtr dom, gauge_t value) {
915 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
918 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
920 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
921 "minor_fault", "unused", "available",
922 "actual_balloon", "rss", "usable",
925 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
926 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
930 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
933 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
934 virDomainPtr dom, const char *devname) {
936 {.derive = v0}, {.derive = v1},
939 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
940 } /* void submit_derive2 */
942 static double cpu_ns_to_percent(unsigned int node_cpus,
943 unsigned long long cpu_time_old,
944 unsigned long long cpu_time_new) {
945 double percent = 0.0;
946 unsigned long long cpu_time_diff = 0;
947 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
949 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
950 cpu_time_diff = cpu_time_new - cpu_time_old;
951 percent = ((double)(100 * cpu_time_diff)) /
952 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
955 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
956 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
957 " time_diff_sec=%f percent=%f",
958 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
959 (uint64_t)cpu_time_diff, time_diff_sec, percent);
964 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
969 if (extra_stats & ex_stats_cpu_util) {
970 /* Computing %CPU requires 2 samples of cpuTime */
971 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
973 submit(dom->ptr, "percent", "virt_cpu_total",
974 &(value_t){.gauge = cpu_ns_to_percent(
975 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
980 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
984 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
986 char type_instance[DATA_MAX_NAME_LEN];
988 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
989 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
992 static void disk_block_stats_submit(struct lv_block_stats *bstats,
993 virDomainPtr dom, const char *dev,
994 virDomainBlockInfoPtr binfo) {
995 char *dev_copy = strdup(dev);
996 const char *type_instance = dev_copy;
1001 if (blockdevice_format_basename && blockdevice_format == source)
1002 type_instance = basename(dev_copy);
1004 if (!type_instance) {
1009 char flush_type_instance[DATA_MAX_NAME_LEN];
1010 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1013 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1014 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1015 (derive_t)bstats->bi.wr_req, dom, type_instance);
1017 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1018 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1019 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1021 if (extra_stats & ex_stats_disk) {
1022 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1023 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1024 (derive_t)bstats->wr_total_times, dom, type_instance);
1026 if (bstats->fl_req != -1)
1027 submit(dom, "total_requests", flush_type_instance,
1028 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1029 if (bstats->fl_total_times != -1) {
1030 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1031 submit(dom, "total_time_in_ms", flush_type_instance,
1032 &(value_t){.derive = value}, 1);
1036 /* disk_allocation, disk_capacity and disk_physical are stored only
1037 * if corresponding extrastats are set in collectd configuration file */
1038 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1039 submit(dom, "disk_allocation", type_instance,
1040 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1042 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1043 submit(dom, "disk_capacity", type_instance,
1044 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1046 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1047 submit(dom, "disk_physical", type_instance,
1048 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1054 * Function for parsing ExtraStats configuration options.
1055 * Result of parsing is stored under 'out_parsed_flags' pointer.
1057 * Returns 0 in case of success and 1 in case of parsing error
1059 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1061 unsigned int ex_stats_flags = ex_stats_none;
1063 assert(out_parsed_flags != NULL);
1065 for (int i = 0; i < numexstats; i++) {
1066 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1067 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1068 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1069 ex_stats_table[j].name);
1070 ex_stats_flags |= ex_stats_table[j].flag;
1074 if (ex_stats_table[j + 1].name == NULL) {
1075 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1082 *out_parsed_flags = ex_stats_flags;
1086 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1087 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1088 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1092 char msg[DATA_MAX_NAME_LEN];
1093 const char *state_str = domain_states[state];
1094 #ifdef HAVE_DOM_REASON
1096 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1097 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1101 const char *reason_str = domain_reasons[state][reason];
1102 /* Array size for domain reasons is fixed, but different domain states can
1103 * have different number of reasons. We need to check if reason was
1104 * successfully parsed */
1106 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1111 const char *reason_str = "N/A";
1114 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1119 case VIR_DOMAIN_NOSTATE:
1120 case VIR_DOMAIN_RUNNING:
1121 case VIR_DOMAIN_SHUTDOWN:
1122 case VIR_DOMAIN_SHUTOFF:
1123 severity = NOTIF_OKAY;
1125 case VIR_DOMAIN_BLOCKED:
1126 case VIR_DOMAIN_PAUSED:
1127 #ifdef DOM_STATE_PMSUSPENDED
1128 case VIR_DOMAIN_PMSUSPENDED:
1130 severity = NOTIF_WARNING;
1132 case VIR_DOMAIN_CRASHED:
1133 severity = NOTIF_FAILURE;
1136 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1139 submit_notif(dom, severity, msg, "domain_state", NULL);
1142 static int lv_init_ignorelists() {
1143 if (il_domains == NULL)
1144 il_domains = ignorelist_create(1);
1145 if (il_block_devices == NULL)
1146 il_block_devices = ignorelist_create(1);
1147 if (il_interface_devices == NULL)
1148 il_interface_devices = ignorelist_create(1);
1150 if (!il_domains || !il_block_devices || !il_interface_devices)
1156 /* Validates config option that may take multiple strings arguments.
1157 * Returns 0 on success, -1 otherwise */
1158 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1160 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1164 if (ci->values_num < 1) {
1166 " plugin: the '%s' option requires at least one string argument",
1171 for (int i = 0; i < ci->values_num; ++i) {
1172 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1174 " plugin: one of the '%s' options is not a valid string",
1183 static int lv_config(oconfig_item_t *ci) {
1184 if (lv_init_ignorelists() != 0) {
1185 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1189 for (int i = 0; i < ci->children_num; ++i) {
1190 oconfig_item_t *c = ci->children + i;
1192 if (strcasecmp(c->key, "Connection") == 0) {
1193 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1197 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1198 if (cf_util_get_int(c, &interval) != 0)
1202 } else if (strcasecmp(c->key, "Domain") == 0) {
1203 char *domain_name = NULL;
1204 if (cf_util_get_string(c, &domain_name) != 0)
1207 if (ignorelist_add(il_domains, domain_name)) {
1208 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1216 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1217 char *device_name = NULL;
1218 if (cf_util_get_string(c, &device_name) != 0)
1221 if (ignorelist_add(il_block_devices, device_name) != 0) {
1223 " plugin: Adding '%s' to block-device-ignorelist failed",
1231 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1232 char *device_format = NULL;
1233 if (cf_util_get_string(c, &device_format) != 0)
1236 if (strcasecmp(device_format, "target") == 0)
1237 blockdevice_format = target;
1238 else if (strcasecmp(device_format, "source") == 0)
1239 blockdevice_format = source;
1241 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1243 sfree(device_format);
1247 sfree(device_format);
1249 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1250 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1254 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1255 char *interface_name = NULL;
1256 if (cf_util_get_string(c, &interface_name) != 0)
1259 if (ignorelist_add(il_interface_devices, interface_name)) {
1260 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1262 sfree(interface_name);
1266 sfree(interface_name);
1268 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1269 bool ignore_selected = false;
1270 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1273 if (ignore_selected) {
1274 ignorelist_set_invert(il_domains, 0);
1275 ignorelist_set_invert(il_block_devices, 0);
1276 ignorelist_set_invert(il_interface_devices, 0);
1278 ignorelist_set_invert(il_domains, 1);
1279 ignorelist_set_invert(il_block_devices, 1);
1280 ignorelist_set_invert(il_interface_devices, 1);
1284 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1285 if (cf_util_get_string(c, &hm_ns) != 0)
1289 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1290 if (cf_util_get_string(c, &hm_xpath) != 0)
1294 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1295 /* this option can take multiple strings arguments in one config line*/
1296 if (check_config_multiple_string_entry(c) != 0) {
1297 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1301 const int params_num = c->values_num;
1302 for (int i = 0; i < params_num; ++i) {
1303 const char *param_name = c->values[i].value.string;
1304 if (strcasecmp(param_name, "hostname") == 0)
1305 hostname_format[i] = hf_hostname;
1306 else if (strcasecmp(param_name, "name") == 0)
1307 hostname_format[i] = hf_name;
1308 else if (strcasecmp(param_name, "uuid") == 0)
1309 hostname_format[i] = hf_uuid;
1310 else if (strcasecmp(param_name, "metadata") == 0)
1311 hostname_format[i] = hf_metadata;
1313 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1319 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1320 hostname_format[i] = hf_none;
1323 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1324 /* this option can handle list of string parameters in one line*/
1325 if (check_config_multiple_string_entry(c) != 0) {
1327 " plugin: Could not get 'PluginInstanceFormat' parameter");
1331 const int params_num = c->values_num;
1332 for (int i = 0; i < params_num; ++i) {
1333 const char *param_name = c->values[i].value.string;
1334 if (strcasecmp(param_name, "none") == 0) {
1335 plugin_instance_format[i] = plginst_none;
1337 } else if (strcasecmp(param_name, "name") == 0)
1338 plugin_instance_format[i] = plginst_name;
1339 else if (strcasecmp(param_name, "uuid") == 0)
1340 plugin_instance_format[i] = plginst_uuid;
1341 else if (strcasecmp(param_name, "metadata") == 0)
1342 plugin_instance_format[i] = plginst_metadata;
1344 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1351 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1352 plugin_instance_format[i] = plginst_none;
1355 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1356 char *format = NULL;
1357 if (cf_util_get_string(c, &format) != 0)
1360 if (strcasecmp(format, "name") == 0)
1361 interface_format = if_name;
1362 else if (strcasecmp(format, "address") == 0)
1363 interface_format = if_address;
1364 else if (strcasecmp(format, "number") == 0)
1365 interface_format = if_number;
1367 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1374 } else if (strcasecmp(c->key, "Instances") == 0) {
1375 if (cf_util_get_int(c, &nr_instances) != 0)
1378 if (nr_instances <= 0) {
1379 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1382 if (nr_instances > NR_INSTANCES_MAX) {
1383 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1384 " use a lower setting or recompile the plugin.",
1385 nr_instances, NR_INSTANCES_MAX);
1389 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1391 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1392 char *ex_str = NULL;
1394 if (cf_util_get_string(c, &ex_str) != 0)
1397 char *exstats[EX_STATS_MAX_FIELDS];
1398 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1399 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1402 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1406 #ifdef HAVE_JOB_STATS
1407 if ((extra_stats & ex_stats_job_stats_completed) &&
1408 (extra_stats & ex_stats_job_stats_background)) {
1409 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1410 "type of job statistics can be collected at the same "
1416 /* ExtraStats parsed successfully */
1418 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1419 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1423 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1424 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1428 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1429 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1434 /* Unrecognised option. */
1435 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1443 static int lv_connect(void) {
1445 /* `conn_string == NULL' is acceptable */
1447 /* virDomainGetFSInfo requires full read-write access connection */
1448 if (extra_stats & ex_stats_fs_info)
1449 conn = virConnectOpen(conn_string);
1452 conn = virConnectOpenReadOnly(conn_string);
1454 c_complain(LOG_ERR, &conn_complain,
1455 PLUGIN_NAME " plugin: Unable to connect: "
1456 "virConnectOpen failed.");
1459 int status = virNodeGetInfo(conn, &nodeinfo);
1461 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1465 c_release(LOG_NOTICE, &conn_complain,
1466 PLUGIN_NAME " plugin: Connection established.");
1470 static void lv_disconnect(void) {
1472 virConnectClose(conn);
1474 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1477 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1478 struct lv_block_stats *bstats) {
1479 #ifdef HAVE_BLOCK_STATS_FLAGS
1481 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1483 VIRT_ERROR(conn, "getting the disk params count");
1487 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1488 if (params == NULL) {
1489 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1495 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1496 VIRT_ERROR(conn, "getting the disk params values");
1498 rc = get_block_stats(bstats, params, nparams);
1501 virTypedParamsClear(params, nparams);
1505 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1506 #endif /* HAVE_BLOCK_STATS_FLAGS */
1509 #ifdef HAVE_PERF_STATS
1510 static void perf_submit(virDomainStatsRecordPtr stats) {
1511 for (int i = 0; i < stats->nparams; ++i) {
1512 /* Replace '.' with '_' in event field to match other metrics' naming
1514 char *c = strchr(stats->params[i].field, '.');
1517 submit(stats->dom, "perf", stats->params[i].field,
1518 &(value_t){.derive = stats->params[i].value.ul}, 1);
1522 static int get_perf_events(virDomainPtr domain) {
1523 virDomainStatsRecordPtr *stats = NULL;
1524 /* virDomainListGetStats requires a NULL terminated list of domains */
1525 virDomainPtr domain_array[] = {domain, NULL};
1528 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1530 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1534 for (int i = 0; i < status; ++i)
1535 perf_submit(stats[i]);
1537 virDomainStatsRecordListFree(stats);
1540 #endif /* HAVE_PERF_STATS */
1542 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1543 unsigned char *cpu_maps, int cpu_map_len) {
1544 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1545 char type_instance[DATA_MAX_NAME_LEN];
1546 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1548 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1549 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1553 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1554 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1555 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1557 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1558 if (vinfo == NULL) {
1559 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1563 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1564 if (cpumaps == NULL) {
1565 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1571 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1573 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1580 for (int i = 0; i < nr_virt_cpu; ++i) {
1581 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1582 if (extra_stats & ex_stats_vcpupin)
1583 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1591 #ifdef HAVE_CPU_STATS
1592 static int get_pcpu_stats(virDomainPtr dom) {
1593 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1595 VIRT_ERROR(conn, "getting the CPU params count");
1599 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1600 if (param == NULL) {
1601 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1605 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1607 virTypedParamsClear(param, nparams);
1609 VIRT_ERROR(conn, "getting the CPU params values");
1613 unsigned long long total_user_cpu_time = 0;
1614 unsigned long long total_syst_cpu_time = 0;
1616 for (int i = 0; i < nparams; ++i) {
1617 if (!strcmp(param[i].field, "user_time"))
1618 total_user_cpu_time = param[i].value.ul;
1619 else if (!strcmp(param[i].field, "system_time"))
1620 total_syst_cpu_time = param[i].value.ul;
1623 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1624 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1627 virTypedParamsClear(param, nparams);
1632 #endif /* HAVE_CPU_STATS */
1634 #ifdef HAVE_DOM_REASON
1636 static void domain_state_submit(virDomainPtr dom, int state, int reason) {
1637 value_t values[] = {
1638 {.gauge = (gauge_t)state}, {.gauge = (gauge_t)reason},
1641 submit(dom, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1644 static int get_domain_state(virDomainPtr domain) {
1645 int domain_state = 0;
1646 int domain_reason = 0;
1648 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1650 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1655 domain_state_submit(domain, domain_state, domain_reason);
1660 #ifdef HAVE_LIST_ALL_DOMAINS
1661 static int get_domain_state_notify(virDomainPtr domain) {
1662 int domain_state = 0;
1663 int domain_reason = 0;
1665 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1667 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1672 if (persistent_notification)
1673 domain_state_submit_notif(domain, domain_state, domain_reason);
1677 #endif /* HAVE_LIST_ALL_DOMAINS */
1678 #endif /* HAVE_DOM_REASON */
1680 static int get_memory_stats(virDomainPtr domain) {
1681 virDomainMemoryStatPtr minfo =
1682 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1683 if (minfo == NULL) {
1684 ERROR("virt plugin: calloc failed.");
1689 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1690 if (mem_stats < 0) {
1691 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1697 derive_t swap_in = -1;
1698 derive_t swap_out = -1;
1699 derive_t min_flt = -1;
1700 derive_t maj_flt = -1;
1702 for (int i = 0; i < mem_stats; i++) {
1703 if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN)
1704 swap_in = minfo[i].val;
1705 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT)
1706 swap_out = minfo[i].val;
1707 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT)
1708 min_flt = minfo[i].val;
1709 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT)
1710 maj_flt = minfo[i].val;
1711 #ifdef LIBVIR_CHECK_VERSION
1712 #if LIBVIR_CHECK_VERSION(2, 1, 0)
1713 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE)
1714 /* Skip 'last_update' reporting as that is not memory but timestamp */
1719 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1722 if (swap_in > 0 || swap_out > 0) {
1723 submit(domain, "swap_io", "in", &(value_t){.gauge = swap_in}, 1);
1724 submit(domain, "swap_io", "out", &(value_t){.gauge = swap_out}, 1);
1727 if (min_flt > 0 || maj_flt > 0) {
1728 value_t values[] = {
1729 {.gauge = (gauge_t)min_flt}, {.gauge = (gauge_t)maj_flt},
1731 submit(domain, "ps_pagefaults", NULL, values, STATIC_ARRAY_SIZE(values));
1738 #ifdef HAVE_DISK_ERR
1739 static void disk_err_submit(virDomainPtr domain,
1740 virDomainDiskErrorPtr disk_err) {
1741 submit(domain, "disk_error", disk_err->disk,
1742 &(value_t){.gauge = disk_err->error}, 1);
1745 static int get_disk_err(virDomainPtr domain) {
1746 /* Get preferred size of disk errors array */
1747 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1748 if (disk_err_count == -1) {
1750 " plugin: failed to get preferred size of disk errors array");
1755 " plugin: preferred size of disk errors array: %d for domain %s",
1756 disk_err_count, virDomainGetName(domain));
1757 virDomainDiskError disk_err[disk_err_count];
1759 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1760 if (disk_err_count == -1) {
1761 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1766 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1767 disk_err_count, virDomainGetName(domain));
1769 for (int i = 0; i < disk_err_count; ++i) {
1770 disk_err_submit(domain, &disk_err[i]);
1771 sfree(disk_err[i].disk);
1776 #endif /* HAVE_DISK_ERR */
1778 static int get_block_device_stats(struct block_device *block_dev) {
1780 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1784 virDomainBlockInfo binfo;
1785 init_block_info(&binfo);
1787 /* Fetching block info stats only if needed*/
1788 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1789 ex_stats_disk_physical)) {
1790 /* Block info statistics can be only fetched from devices with 'source'
1792 if (block_dev->has_source) {
1793 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1795 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1802 struct lv_block_stats bstats;
1803 init_block_stats(&bstats);
1805 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1806 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1810 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1816 #define NM_ADD_ITEM(_fun, _name, _val) \
1818 ret = _fun(¬if, _name, _val); \
1820 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1825 #define NM_ADD_STR_ITEMS(_items, _size) \
1827 for (size_t _i = 0; _i < _size; ++_i) { \
1829 " plugin: Adding notification metadata name=%s value=%s", \
1830 _items[_i].name, _items[_i].value); \
1831 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1832 _items[_i].value); \
1836 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1837 notification_t notif;
1840 /* Local struct, just for the purpose of this function. */
1841 typedef struct nm_str_item_s {
1846 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1847 nm_str_item_t fs_str_items[] = {
1848 {.name = "mountpoint", .value = fs_info->mountpoint},
1849 {.name = "name", .value = fs_info->name},
1850 {.name = "fstype", .value = fs_info->fstype}};
1852 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1853 fs_dev_alias[i].name = "devAlias";
1854 fs_dev_alias[i].value = fs_info->devAlias[i];
1857 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1858 "file_system", NULL);
1859 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1860 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1861 fs_info->ndevAlias);
1862 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1864 plugin_dispatch_notification(¬if);
1868 plugin_notification_meta_free(notif.meta);
1872 #undef RETURN_ON_ERR
1873 #undef NM_ADD_STR_ITEMS
1875 static int get_fs_info(virDomainPtr domain) {
1876 virDomainFSInfoPtr *fs_info = NULL;
1879 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1880 if (mount_points_cnt == -1) {
1881 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1883 return mount_points_cnt;
1886 for (int i = 0; i < mount_points_cnt; ++i) {
1887 if (fs_info_notify(domain, fs_info[i]) != 0) {
1888 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1889 "for mount point %s",
1890 fs_info[i]->mountpoint);
1893 virDomainFSInfoFree(fs_info[i]);
1900 #endif /* HAVE_FS_INFO */
1902 #ifdef HAVE_JOB_STATS
1903 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1906 if (param->type == VIR_TYPED_PARAM_INT)
1907 vl.derive = param->value.i;
1908 else if (param->type == VIR_TYPED_PARAM_UINT)
1909 vl.derive = param->value.ui;
1910 else if (param->type == VIR_TYPED_PARAM_LLONG)
1911 vl.derive = param->value.l;
1912 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1913 vl.derive = param->value.ul;
1914 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1915 vl.derive = param->value.d;
1916 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1917 vl.derive = param->value.b;
1918 else if (param->type == VIR_TYPED_PARAM_STRING) {
1919 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1922 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1926 submit(domain, "job_stats", param->field, &vl, 1);
1929 static int get_job_stats(virDomainPtr domain) {
1933 virTypedParameterPtr params = NULL;
1934 int flags = (extra_stats & ex_stats_job_stats_completed)
1935 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1938 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1940 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1944 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1946 for (int i = 0; i < nparams; ++i) {
1947 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1949 job_stats_submit(domain, ¶ms[i]);
1952 virTypedParamsFree(params, nparams);
1955 #endif /* HAVE_JOB_STATS */
1957 static int get_domain_metrics(domain_t *domain) {
1958 if (!domain || !domain->ptr) {
1959 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
1964 int status = virDomainGetInfo(domain->ptr, &info);
1966 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1971 if (extra_stats & ex_stats_domain_state) {
1972 #ifdef HAVE_DOM_REASON
1973 /* At this point we already know domain's state from virDomainGetInfo call,
1974 * however it doesn't provide a reason for entering particular state.
1975 * We need to get it from virDomainGetState.
1977 GET_STATS(get_domain_state, "domain reason", domain->ptr);
1981 /* Gather remaining stats only for running domains */
1982 if (info.state != VIR_DOMAIN_RUNNING)
1985 #ifdef HAVE_CPU_STATS
1986 if (extra_stats & ex_stats_pcpu)
1987 get_pcpu_stats(domain->ptr);
1990 cpu_submit(domain, info.cpuTime);
1992 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
1994 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
1995 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
1997 #ifdef HAVE_PERF_STATS
1998 if (extra_stats & ex_stats_perf)
1999 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
2003 if (extra_stats & ex_stats_fs_info)
2004 GET_STATS(get_fs_info, "file system info", domain->ptr);
2007 #ifdef HAVE_DISK_ERR
2008 if (extra_stats & ex_stats_disk_err)
2009 GET_STATS(get_disk_err, "disk errors", domain->ptr);
2012 #ifdef HAVE_JOB_STATS
2014 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
2015 GET_STATS(get_job_stats, "job stats", domain->ptr);
2018 /* Update cached virDomainInfo. It has to be done after cpu_submit */
2019 memcpy(&domain->info, &info, sizeof(domain->info));
2024 static int get_if_dev_stats(struct interface_device *if_dev) {
2025 virDomainInterfaceStatsStruct stats = {0};
2026 char *display_name = NULL;
2029 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
2033 switch (interface_format) {
2035 display_name = if_dev->address;
2038 display_name = if_dev->number;
2042 display_name = if_dev->path;
2045 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2046 sizeof(stats)) != 0) {
2047 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2051 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2052 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2053 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2055 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2056 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2057 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2059 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2060 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2061 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2063 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2064 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2065 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2069 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2070 virDomainPtr dom, int event, int detail,
2071 __attribute__((unused)) void *opaque) {
2072 int domain_state = map_domain_event_to_state(event);
2073 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2074 #ifdef HAVE_DOM_REASON
2075 domain_reason = map_domain_event_detail_to_reason(event, detail);
2077 domain_state_submit_notif(dom, domain_state, domain_reason);
2082 static int register_event_impl(void) {
2083 if (virEventRegisterDefaultImpl() < 0) {
2084 virErrorPtr err = virGetLastError();
2086 " plugin: error while event implementation registering: %s",
2087 err && err->message ? err->message : "Unknown error");
2094 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2095 const bool active) {
2096 assert(thread_data != NULL);
2097 pthread_mutex_lock(&thread_data->active_mutex);
2098 thread_data->is_active = active;
2099 pthread_mutex_unlock(&thread_data->active_mutex);
2102 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2103 bool active = false;
2105 assert(thread_data != NULL);
2106 pthread_mutex_lock(&thread_data->active_mutex);
2107 active = thread_data->is_active;
2108 pthread_mutex_unlock(&thread_data->active_mutex);
2113 /* worker function running default event implementation */
2114 static void *event_loop_worker(void *arg) {
2115 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2117 while (virt_notif_thread_is_active(thread_data)) {
2118 if (virEventRunDefaultImpl() < 0) {
2119 virErrorPtr err = virGetLastError();
2120 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2121 err && err->message ? err->message : "Unknown error");
2128 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2131 assert(thread_data != NULL);
2132 ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2134 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2139 * '0' and positive integers are meaningful ID's, therefore setting
2140 * domain_event_cb_id to '-1'
2142 thread_data->domain_event_cb_id = -1;
2143 pthread_mutex_lock(&thread_data->active_mutex);
2144 thread_data->is_active = false;
2145 pthread_mutex_unlock(&thread_data->active_mutex);
2150 /* register domain event callback and start event loop thread */
2151 static int start_event_loop(virt_notif_thread_t *thread_data) {
2152 assert(thread_data != NULL);
2153 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2154 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2155 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2156 if (thread_data->domain_event_cb_id == -1) {
2157 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2161 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2163 virt_notif_thread_set_active(thread_data, 1);
2164 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2166 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2167 virt_notif_thread_set_active(thread_data, 0);
2168 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2169 thread_data->domain_event_cb_id = -1;
2176 /* stop event loop thread and deregister callback */
2177 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2179 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2182 if (virt_notif_thread_is_active(thread_data)) {
2183 virt_notif_thread_set_active(thread_data, 0);
2184 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2185 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2188 /* ... and de-registering event handler */
2189 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2190 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2191 thread_data->domain_event_cb_id = -1;
2195 static int persistent_domains_state_notification(void) {
2198 #ifdef HAVE_LIST_ALL_DOMAINS
2199 virDomainPtr *domains = NULL;
2200 n = virConnectListAllDomains(conn, &domains,
2201 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2203 VIRT_ERROR(conn, "reading list of persistent domains");
2206 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2207 /* Fetch each persistent domain's state and notify it */
2209 for (int i = 0; i < n; ++i) {
2210 status = get_domain_state_notify(domains[i]);
2213 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2214 virDomainGetName(domains[i]));
2216 virDomainFree(domains[i]);
2220 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2224 n = virConnectNumOfDomains(conn);
2227 /* Get list of domains. */
2228 domids = calloc(n, sizeof(*domids));
2229 if (domids == NULL) {
2230 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2233 n = virConnectListDomains(conn, domids, n);
2235 VIRT_ERROR(conn, "reading list of domains");
2239 /* Fetch info of each active domain and notify it */
2240 for (int i = 0; i < n; ++i) {
2242 virDomainPtr dom = NULL;
2243 dom = virDomainLookupByID(conn, domids[i]);
2245 VIRT_ERROR(conn, "virDomainLookupByID");
2246 /* Could be that the domain went away -- ignore it anyway. */
2249 status = virDomainGetInfo(dom, &info);
2251 /* virDomainGetState is not available. Submit 0, which corresponds to
2252 * unknown reason. */
2253 domain_state_submit_notif(dom, info.state, 0);
2255 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2267 static int lv_read(user_data_t *ud) {
2269 struct lv_read_instance *inst = NULL;
2270 struct lv_read_state *state = NULL;
2272 if (ud->data == NULL) {
2273 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2278 state = &inst->read_state;
2280 bool reconnect = conn == NULL ? true : false;
2281 /* event implementation must be registered before connection is opened */
2282 if (inst->id == 0) {
2283 if (!persistent_notification && reconnect)
2284 if (register_event_impl() != 0)
2287 if (lv_connect() < 0)
2290 if (!persistent_notification && reconnect && conn != NULL)
2291 if (start_event_loop(¬if_thread) != 0)
2297 /* Need to refresh domain or device lists? */
2298 if ((last_refresh == (time_t)0) ||
2299 ((interval > 0) && ((last_refresh + interval) <= t))) {
2300 if (refresh_lists(inst) != 0) {
2301 if (inst->id == 0) {
2302 if (!persistent_notification)
2303 stop_event_loop(¬if_thread);
2311 /* persistent domains state notifications are handled by instance 0 */
2312 if (inst->id == 0 && persistent_notification) {
2313 int status = persistent_domains_state_notification();
2315 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2316 "returned with status %i",
2321 for (int i = 0; i < state->nr_domains; ++i)
2322 DEBUG(PLUGIN_NAME " plugin: domain %s",
2323 virDomainGetName(state->domains[i].ptr));
2324 for (int i = 0; i < state->nr_block_devices; ++i)
2325 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2326 virDomainGetName(state->block_devices[i].dom),
2327 state->block_devices[i].path);
2328 for (int i = 0; i < state->nr_interface_devices; ++i)
2329 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2330 virDomainGetName(state->interface_devices[i].dom),
2331 state->interface_devices[i].path);
2334 /* Get domains' metrics */
2335 for (int i = 0; i < state->nr_domains; ++i) {
2336 domain_t *dom = &state->domains[i];
2339 status = get_domain_metrics(dom);
2340 #ifdef HAVE_DOM_REASON
2342 status = get_domain_state(dom->ptr);
2346 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2347 virDomainGetName(dom->ptr));
2350 /* Get block device stats for each domain. */
2351 for (int i = 0; i < state->nr_block_devices; ++i) {
2352 int status = get_block_device_stats(&state->block_devices[i]);
2355 " plugin: failed to get stats for block device (%s) in domain %s",
2356 state->block_devices[i].path,
2357 virDomainGetName(state->block_devices[i].dom));
2360 /* Get interface stats for each domain. */
2361 for (int i = 0; i < state->nr_interface_devices; ++i) {
2362 int status = get_if_dev_stats(&state->interface_devices[i]);
2366 " plugin: failed to get interface stats for device (%s) in domain %s",
2367 state->interface_devices[i].path,
2368 virDomainGetName(state->interface_devices[i].dom));
2374 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2375 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2376 struct lv_read_instance *inst = &(lv_ud->inst);
2378 memset(lv_ud, 0, sizeof(*lv_ud));
2380 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2383 user_data_t *ud = &(lv_ud->ud);
2385 ud->free_func = NULL;
2387 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2389 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2392 static void lv_clean_read_state(struct lv_read_state *state) {
2393 free_block_devices(state);
2394 free_interface_devices(state);
2395 free_domains(state);
2398 static void lv_fini_instance(size_t i) {
2399 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2400 struct lv_read_state *state = &(inst->read_state);
2402 lv_clean_read_state(state);
2404 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2407 static int lv_init(void) {
2408 if (virInitialize() != 0)
2411 /* Init ignorelists if there was no explicit configuration */
2412 if (lv_init_ignorelists() != 0)
2415 /* event implementation must be registered before connection is opened */
2416 if (!persistent_notification)
2417 if (register_event_impl() != 0)
2420 if (lv_connect() != 0)
2423 if (!persistent_notification) {
2424 virt_notif_thread_init(¬if_thread);
2425 if (start_event_loop(¬if_thread) != 0)
2429 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2431 for (int i = 0; i < nr_instances; ++i)
2432 if (lv_init_instance(i, lv_read) != 0)
2439 * returns 0 on success and <0 on error
2441 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2443 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2444 xmlXPathObjectPtr xpath_obj = NULL;
2445 xmlNodePtr xml_node = NULL;
2449 err = xmlXPathRegisterNs(xpath_ctx,
2450 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2451 (const xmlChar *)METADATA_VM_PARTITION_URI);
2453 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2454 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2458 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2459 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2460 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2461 if (xpath_obj == NULL) {
2462 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2463 xpath_str, dom_name);
2467 if (xpath_obj->type != XPATH_NODESET) {
2468 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2469 "(wanted %d) on domain %s",
2470 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2475 * from now on there is no real error, it's ok if a domain
2476 * doesn't have the metadata partition tag.
2479 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2480 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2481 "expected=1 on domain %s",
2483 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2486 xml_node = xpath_obj->nodesetval->nodeTab[0];
2487 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2491 /* deregister to clean up */
2492 err = xmlXPathRegisterNs(xpath_ctx,
2493 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2495 /* we can't really recover here */
2497 " plugin: deregistration of namespace %s failed for domain %s",
2498 METADATA_VM_PARTITION_PREFIX, dom_name);
2501 xmlXPathFreeObject(xpath_obj);
2506 static int is_known_tag(const char *dom_tag) {
2507 for (int i = 0; i < nr_instances; ++i)
2508 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2513 static int lv_instance_include_domain(struct lv_read_instance *inst,
2514 const char *dom_name,
2515 const char *dom_tag) {
2516 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2519 /* instance#0 will always be there, so it is in charge of extra duties */
2520 if (inst->id == 0) {
2521 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2522 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2523 "with unknown tag '%s'",
2524 inst->tag, dom_name, dom_tag);
2532 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2533 const char *domname,
2534 xmlXPathContextPtr xpath_ctx) {
2535 xmlXPathObjectPtr xpath_obj =
2536 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2538 if (xpath_obj == NULL) {
2539 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2544 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2545 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2549 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2550 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2551 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2552 char *path_str = NULL;
2553 char *source_str = NULL;
2558 /* Fetching path and source for block device */
2559 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2560 if (child->type != XML_ELEMENT_NODE)
2563 /* we are interested only in either "target" or "source" elements */
2564 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2565 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2566 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2567 /* name of the source is located in "dev" or "file" element (it depends
2568 * on type of source). Trying "dev" at first*/
2569 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2571 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2573 /* ignoring any other element*/
2576 /* source_str will be interpreted as a device path if blockdevice_format
2577 * param is set to 'source'. */
2578 const char *device_path =
2579 (blockdevice_format == source) ? source_str : path_str;
2582 /* no path found and we can't add block_device without it */
2583 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2584 "domain %s - disk device will be ignored in reports",
2589 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2590 /* we only have to store information whether 'source' exists or not */
2591 bool has_source = (source_str != NULL) ? true : false;
2593 add_block_device(state, dom, device_path, has_source);
2601 xmlFree(source_str);
2605 xmlXPathFreeObject(xpath_obj);
2608 static void lv_add_network_interfaces(struct lv_read_state *state,
2609 virDomainPtr dom, const char *domname,
2610 xmlXPathContextPtr xpath_ctx) {
2611 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2612 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2614 if (xpath_obj == NULL)
2617 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2618 xmlXPathFreeObject(xpath_obj);
2622 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2624 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2626 char *address = NULL;
2627 const int itf_number = j + 1;
2629 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2633 for (xmlNodePtr child = xml_interface->children; child;
2634 child = child->next) {
2635 if (child->type != XML_ELEMENT_NODE)
2638 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2639 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2642 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2643 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2649 bool device_ignored = false;
2650 switch (interface_format) {
2652 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2653 device_ignored = true;
2656 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2657 device_ignored = true;
2660 char number_string[4];
2661 snprintf(number_string, sizeof(number_string), "%d", itf_number);
2662 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2664 device_ignored = true;
2667 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2671 if (!device_ignored)
2672 add_interface_device(state, dom, path, address, itf_number);
2679 xmlXPathFreeObject(xpath_obj);
2682 static bool is_domain_ignored(virDomainPtr dom) {
2683 const char *domname = virDomainGetName(dom);
2685 if (domname == NULL) {
2686 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2690 if (ignorelist_match(il_domains, domname) != 0) {
2692 " plugin: ignoring domain '%s' because of ignorelist option",
2700 static int refresh_lists(struct lv_read_instance *inst) {
2701 struct lv_read_state *state = &inst->read_state;
2704 #ifndef HAVE_LIST_ALL_DOMAINS
2705 n = virConnectNumOfDomains(conn);
2707 VIRT_ERROR(conn, "reading number of domains");
2712 lv_clean_read_state(state);
2714 #ifndef HAVE_LIST_ALL_DOMAINS
2719 #ifdef HAVE_LIST_ALL_DOMAINS
2720 virDomainPtr *domains, *domains_inactive;
2721 int m = virConnectListAllDomains(conn, &domains_inactive,
2722 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2723 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2725 /* Get list of domains. */
2726 int *domids = calloc(n, sizeof(*domids));
2727 if (domids == NULL) {
2728 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2732 n = virConnectListDomains(conn, domids, n);
2736 VIRT_ERROR(conn, "reading list of domains");
2737 #ifndef HAVE_LIST_ALL_DOMAINS
2740 for (int i = 0; i < m; ++i)
2741 virDomainFree(domains_inactive[i]);
2742 sfree(domains_inactive);
2747 #ifdef HAVE_LIST_ALL_DOMAINS
2748 for (int i = 0; i < m; ++i)
2749 if (is_domain_ignored(domains_inactive[i]) ||
2750 add_domain(state, domains_inactive[i], 0) < 0) {
2751 /* domain ignored or failed during adding to domains list*/
2752 virDomainFree(domains_inactive[i]);
2753 domains_inactive[i] = NULL;
2758 /* Fetch each domain and add it to the list, unless ignore. */
2759 for (int i = 0; i < n; ++i) {
2761 #ifdef HAVE_LIST_ALL_DOMAINS
2762 virDomainPtr dom = domains[i];
2764 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2766 VIRT_ERROR(conn, "virDomainLookupByID");
2767 /* Could be that the domain went away -- ignore it anyway. */
2772 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2774 * domain ignored or failed during adding to domains list
2776 * When domain is already tracked, then there is
2777 * no problem with memory handling (will be freed
2778 * with the rest of domains cached data)
2779 * But in case of error like this (error occurred
2780 * before adding domain to track) we have to take
2781 * care it ourselves and call virDomainFree
2787 const char *domname = virDomainGetName(dom);
2788 if (domname == NULL) {
2789 VIRT_ERROR(conn, "virDomainGetName");
2794 int status = virDomainGetInfo(dom, &info);
2796 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2801 if (info.state != VIR_DOMAIN_RUNNING) {
2802 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2806 /* Get a list of devices for this domain. */
2807 xmlDocPtr xml_doc = NULL;
2808 xmlXPathContextPtr xpath_ctx = NULL;
2810 char *xml = virDomainGetXMLDesc(dom, 0);
2812 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2816 /* Yuck, XML. Parse out the devices. */
2817 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2818 if (xml_doc == NULL) {
2819 VIRT_ERROR(conn, "xmlReadDoc");
2823 xpath_ctx = xmlXPathNewContext(xml_doc);
2825 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2826 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2827 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2831 if (!lv_instance_include_domain(inst, domname, tag))
2834 /* Block devices. */
2835 if (report_block_devices)
2836 lv_add_block_devices(state, dom, domname, xpath_ctx);
2838 /* Network interfaces. */
2839 if (report_network_interfaces)
2840 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2844 xmlXPathFreeContext(xpath_ctx);
2846 xmlFreeDoc(xml_doc);
2850 #ifdef HAVE_LIST_ALL_DOMAINS
2851 /* NOTE: domains_active and domains_inactive data will be cleared during
2852 refresh of all domains (inside lv_clean_read_state function) so we need
2853 to free here only allocated arrays */
2855 sfree(domains_inactive);
2862 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2863 " domains=%i block_devices=%i iface_devices=%i",
2864 inst->tag, state->nr_domains, state->nr_block_devices,
2865 state->nr_interface_devices);
2870 static void free_domains(struct lv_read_state *state) {
2871 if (state->domains) {
2872 for (int i = 0; i < state->nr_domains; ++i)
2873 virDomainFree(state->domains[i].ptr);
2874 sfree(state->domains);
2876 state->domains = NULL;
2877 state->nr_domains = 0;
2880 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2882 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2884 domain_t *new_ptr = realloc(state->domains, new_size);
2885 if (new_ptr == NULL) {
2886 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
2890 state->domains = new_ptr;
2891 state->domains[state->nr_domains].ptr = dom;
2892 state->domains[state->nr_domains].active = active;
2893 memset(&state->domains[state->nr_domains].info, 0,
2894 sizeof(state->domains[state->nr_domains].info));
2896 return state->nr_domains++;
2899 static void free_block_devices(struct lv_read_state *state) {
2900 if (state->block_devices) {
2901 for (int i = 0; i < state->nr_block_devices; ++i)
2902 sfree(state->block_devices[i].path);
2903 sfree(state->block_devices);
2905 state->block_devices = NULL;
2906 state->nr_block_devices = 0;
2909 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2910 const char *path, bool has_source) {
2912 char *path_copy = strdup(path);
2917 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2919 struct block_device *new_ptr = realloc(state->block_devices, new_size);
2920 if (new_ptr == NULL) {
2924 state->block_devices = new_ptr;
2925 state->block_devices[state->nr_block_devices].dom = dom;
2926 state->block_devices[state->nr_block_devices].path = path_copy;
2927 state->block_devices[state->nr_block_devices].has_source = has_source;
2928 return state->nr_block_devices++;
2931 static void free_interface_devices(struct lv_read_state *state) {
2932 if (state->interface_devices) {
2933 for (int i = 0; i < state->nr_interface_devices; ++i) {
2934 sfree(state->interface_devices[i].path);
2935 sfree(state->interface_devices[i].address);
2936 sfree(state->interface_devices[i].number);
2938 sfree(state->interface_devices);
2940 state->interface_devices = NULL;
2941 state->nr_interface_devices = 0;
2944 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2945 const char *path, const char *address,
2946 unsigned int number) {
2948 if ((path == NULL) || (address == NULL))
2951 char *path_copy = strdup(path);
2955 char *address_copy = strdup(address);
2956 if (!address_copy) {
2961 char number_string[21];
2962 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2963 char *number_copy = strdup(number_string);
2966 sfree(address_copy);
2971 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2973 struct interface_device *new_ptr =
2974 realloc(state->interface_devices, new_size);
2975 if (new_ptr == NULL) {
2977 sfree(address_copy);
2982 state->interface_devices = new_ptr;
2983 state->interface_devices[state->nr_interface_devices].dom = dom;
2984 state->interface_devices[state->nr_interface_devices].path = path_copy;
2985 state->interface_devices[state->nr_interface_devices].address = address_copy;
2986 state->interface_devices[state->nr_interface_devices].number = number_copy;
2987 return state->nr_interface_devices++;
2990 static int ignore_device_match(ignorelist_t *il, const char *domname,
2991 const char *devpath) {
2992 if ((domname == NULL) || (devpath == NULL))
2995 size_t n = strlen(domname) + strlen(devpath) + 2;
2996 char *name = malloc(n);
2998 ERROR(PLUGIN_NAME " plugin: malloc failed.");
3001 snprintf(name, n, "%s:%s", domname, devpath);
3002 int r = ignorelist_match(il, name);
3007 static int lv_shutdown(void) {
3008 for (int i = 0; i < nr_instances; ++i) {
3009 lv_fini_instance(i);
3012 if (!persistent_notification)
3013 stop_event_loop(¬if_thread);
3017 ignorelist_free(il_domains);
3019 ignorelist_free(il_block_devices);
3020 il_block_devices = NULL;
3021 ignorelist_free(il_interface_devices);
3022 il_interface_devices = NULL;
3027 void module_register(void) {
3028 plugin_register_complex_config("virt", lv_config);
3029 plugin_register_init(PLUGIN_NAME, lv_init);
3030 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);