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 #if LIBVIR_CHECK_VERSION(4, 10, 0)
112 #define HAVE_DOM_REASON_SHUTOFF_DAEMON 1
114 #endif /* LIBVIR_CHECK_VERSION */
116 /* structure used for aggregating notification-thread data*/
117 typedef struct virt_notif_thread_s {
118 pthread_t event_loop_tid;
119 int domain_event_cb_id;
120 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
122 } virt_notif_thread_t;
124 /* PersistentNotification is false by default */
125 static bool persistent_notification = false;
127 static bool report_block_devices = true;
128 static bool report_network_interfaces = true;
130 /* Thread used for handling libvirt notifications events */
131 static virt_notif_thread_t notif_thread;
133 const char *domain_states[] = {
134 [VIR_DOMAIN_NOSTATE] = "no state",
135 [VIR_DOMAIN_RUNNING] = "the domain is running",
136 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
137 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
138 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
139 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
140 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
141 #ifdef HAVE_DOM_STATE_PMSUSPENDED
142 [VIR_DOMAIN_PMSUSPENDED] =
143 "the domain is suspended by guest power management",
147 static int map_domain_event_to_state(int event) {
150 case VIR_DOMAIN_EVENT_STARTED:
151 ret = VIR_DOMAIN_RUNNING;
153 case VIR_DOMAIN_EVENT_SUSPENDED:
154 ret = VIR_DOMAIN_PAUSED;
156 case VIR_DOMAIN_EVENT_RESUMED:
157 ret = VIR_DOMAIN_RUNNING;
159 case VIR_DOMAIN_EVENT_STOPPED:
160 ret = VIR_DOMAIN_SHUTOFF;
162 case VIR_DOMAIN_EVENT_SHUTDOWN:
163 ret = VIR_DOMAIN_SHUTDOWN;
165 #ifdef HAVE_DOM_STATE_PMSUSPENDED
166 case VIR_DOMAIN_EVENT_PMSUSPENDED:
167 ret = VIR_DOMAIN_PMSUSPENDED;
170 #ifdef HAVE_DOM_REASON_CRASHED
171 case VIR_DOMAIN_EVENT_CRASHED:
172 ret = VIR_DOMAIN_CRASHED;
176 ret = VIR_DOMAIN_NOSTATE;
181 #ifdef HAVE_DOM_REASON
182 static int map_domain_event_detail_to_reason(int event, int detail) {
185 case VIR_DOMAIN_EVENT_STARTED:
187 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
188 ret = VIR_DOMAIN_RUNNING_BOOTED;
190 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
192 ret = VIR_DOMAIN_RUNNING_MIGRATED;
194 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
195 ret = VIR_DOMAIN_RUNNING_RESTORED;
197 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
198 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
200 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
201 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
202 ret = VIR_DOMAIN_RUNNING_WAKEUP;
206 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
209 case VIR_DOMAIN_EVENT_SUSPENDED:
211 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
213 ret = VIR_DOMAIN_PAUSED_USER;
215 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
217 ret = VIR_DOMAIN_PAUSED_MIGRATION;
219 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
221 ret = VIR_DOMAIN_PAUSED_IOERROR;
223 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
225 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
227 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
229 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
231 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
233 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
235 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
237 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
239 #ifdef HAVE_DOM_REASON_POSTCOPY
240 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
242 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
244 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
246 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
250 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
253 case VIR_DOMAIN_EVENT_RESUMED:
255 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
257 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
259 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
261 ret = VIR_DOMAIN_RUNNING_MIGRATED;
263 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
264 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
266 #ifdef HAVE_DOM_REASON_POSTCOPY
267 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
268 running in post-copy mode */
269 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
273 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
276 case VIR_DOMAIN_EVENT_STOPPED:
278 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
279 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
281 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
282 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
284 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
285 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
287 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
288 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
290 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
291 ret = VIR_DOMAIN_SHUTOFF_SAVED;
293 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
294 ret = VIR_DOMAIN_SHUTOFF_FAILED;
296 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
297 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
300 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
303 case VIR_DOMAIN_EVENT_SHUTDOWN:
305 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
307 #ifdef LIBVIR_CHECK_VERSION
308 #if LIBVIR_CHECK_VERSION(3, 4, 0)
309 case VIR_DOMAIN_EVENT_SHUTDOWN_GUEST: /* Domain finished shutting down after
310 request from the guest itself (e.g.
311 hardware-specific action) */
312 case VIR_DOMAIN_EVENT_SHUTDOWN_HOST: /* Domain finished shutting down after
313 request from the host (e.g. killed
317 ret = VIR_DOMAIN_SHUTDOWN_USER;
320 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
323 #ifdef HAVE_DOM_STATE_PMSUSPENDED
324 case VIR_DOMAIN_EVENT_PMSUSPENDED:
326 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
328 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
330 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
331 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
334 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
338 case VIR_DOMAIN_EVENT_CRASHED:
340 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
341 ret = VIR_DOMAIN_CRASHED_PANICKED;
344 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
348 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
353 #define DOMAIN_STATE_REASON_MAX_SIZE 20
354 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
355 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] = "the reason is unknown",
357 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] = "the reason is unknown",
358 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
359 "normal startup from boot",
360 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
361 "migrated from another host",
362 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
363 "restored from a state file",
364 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
365 "restored from snapshot",
366 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
367 "returned from paused state",
368 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
369 "returned from migration",
370 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
371 "returned from failed save process",
372 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
373 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
374 "returned from pmsuspended due to wakeup event",
376 #ifdef HAVE_DOM_REASON_CRASHED
377 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] = "resumed from crashed",
379 #ifdef HAVE_DOM_REASON_POSTCOPY
380 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
381 "running in post-copy migration mode",
383 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] = "the reason is unknown",
385 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] = "the reason is unknown",
386 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
387 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
388 "paused for offline migration",
389 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
390 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
391 "paused for offline core dump",
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
393 "paused due to a disk I/O error",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
395 "paused due to a watchdog event",
396 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
397 "paused after restoring from snapshot",
398 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
399 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
400 "paused during shutdown process",
402 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
403 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
404 "paused while creating a snapshot",
406 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
407 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
408 "paused due to a guest crash",
410 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
411 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
412 "the domain is being started",
414 #ifdef HAVE_DOM_REASON_POSTCOPY
415 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
416 "paused for post-copy migration",
417 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
418 "paused after failed post-copy",
420 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
421 "the reason is unknown",
422 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
423 "shutting down on user request",
425 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] = "the reason is unknown",
426 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
427 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
428 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
429 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
430 "migrated to another host",
431 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
432 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] = "domain failed to start",
433 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
434 "restored from a snapshot which was taken while domain was shutoff",
435 #ifdef HAVE_DOM_REASON_SHUTOFF_DAEMON
436 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DAEMON] =
437 "daemon decides to kill domain during reconnection processing",
440 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] = "the reason is unknown",
441 #ifdef VIR_DOMAIN_CRASHED_PANICKED
442 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
445 #ifdef HAVE_DOM_STATE_PMSUSPENDED
446 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
447 "the reason is unknown",
450 #endif /* HAVE_DOM_REASON */
452 #define NANOSEC_IN_SEC 1e9
454 #define GET_STATS(_f, _name, ...) \
456 status = _f(__VA_ARGS__); \
458 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
462 static virConnectPtr conn;
463 static char *conn_string;
464 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
466 /* Node information required for %CPU */
467 static virNodeInfo nodeinfo;
469 /* Seconds between list refreshes, 0 disables completely. */
470 static int interval = 60;
472 /* List of domains, if specified. */
473 static ignorelist_t *il_domains;
474 /* List of block devices, if specified. */
475 static ignorelist_t *il_block_devices;
476 /* List of network interface devices, if specified. */
477 static ignorelist_t *il_interface_devices;
479 static int ignore_device_match(ignorelist_t *, const char *domname,
480 const char *devpath);
482 /* Actual list of block devices found on last refresh. */
483 struct block_device {
484 virDomainPtr dom; /* domain */
485 char *path; /* name of block device */
486 bool has_source; /* information whether source is defined or not */
489 /* Actual list of network interfaces found on last refresh. */
490 struct interface_device {
491 virDomainPtr dom; /* domain */
492 char *path; /* name of interface device */
493 char *address; /* mac address of interface device */
494 char *number; /* interface device number */
497 typedef struct domain_s {
503 struct lv_read_state {
504 /* Actual list of domains found on last refresh. */
508 struct block_device *block_devices;
509 int nr_block_devices;
511 struct interface_device *interface_devices;
512 int nr_interface_devices;
515 static void free_domains(struct lv_read_state *state);
516 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
519 static void free_block_devices(struct lv_read_state *state);
520 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
521 const char *path, bool has_source);
523 static void free_interface_devices(struct lv_read_state *state);
524 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
525 const char *path, const char *address,
526 unsigned int number);
528 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
529 #define METADATA_VM_PARTITION_ELEMENT "tag"
530 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
532 #define BUFFER_MAX_LEN 256
533 #define PARTITION_TAG_MAX_LEN 32
535 struct lv_read_instance {
536 struct lv_read_state read_state;
537 char tag[PARTITION_TAG_MAX_LEN];
541 struct lv_user_data {
542 struct lv_read_instance inst;
546 #define NR_INSTANCES_DEFAULT 1
547 #define NR_INSTANCES_MAX 128
548 static int nr_instances = NR_INSTANCES_DEFAULT;
549 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
551 /* HostnameFormat. */
552 #define HF_MAX_FIELDS 4
554 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
556 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
558 /* PluginInstanceFormat */
559 #define PLGINST_MAX_FIELDS 3
568 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
571 /* HostnameMetadataNS && HostnameMetadataXPath */
572 static char *hm_xpath;
575 /* BlockDeviceFormat */
576 enum bd_field { target, source };
578 /* InterfaceFormat. */
579 enum if_field { if_address, if_name, if_number };
582 #define EX_STATS_MAX_FIELDS 15
585 ex_stats_disk = 1 << 0,
586 ex_stats_pcpu = 1 << 1,
587 ex_stats_cpu_util = 1 << 2,
588 ex_stats_domain_state = 1 << 3,
589 #ifdef HAVE_PERF_STATS
590 ex_stats_perf = 1 << 4,
592 ex_stats_vcpupin = 1 << 5,
594 ex_stats_disk_err = 1 << 6,
597 ex_stats_fs_info = 1 << 7,
599 #ifdef HAVE_JOB_STATS
600 ex_stats_job_stats_completed = 1 << 8,
601 ex_stats_job_stats_background = 1 << 9,
603 ex_stats_disk_allocation = 1 << 10,
604 ex_stats_disk_capacity = 1 << 11,
605 ex_stats_disk_physical = 1 << 12,
606 ex_stats_memory = 1 << 13,
607 ex_stats_vcpu = 1 << 14
610 static unsigned int extra_stats = ex_stats_none;
612 struct ex_stats_item {
616 static const struct ex_stats_item ex_stats_table[] = {
617 {"disk", ex_stats_disk},
618 {"pcpu", ex_stats_pcpu},
619 {"cpu_util", ex_stats_cpu_util},
620 {"domain_state", ex_stats_domain_state},
621 #ifdef HAVE_PERF_STATS
622 {"perf", ex_stats_perf},
624 {"vcpupin", ex_stats_vcpupin},
626 {"disk_err", ex_stats_disk_err},
629 {"fs_info", ex_stats_fs_info},
631 #ifdef HAVE_JOB_STATS
632 {"job_stats_completed", ex_stats_job_stats_completed},
633 {"job_stats_background", ex_stats_job_stats_background},
635 {"disk_allocation", ex_stats_disk_allocation},
636 {"disk_capacity", ex_stats_disk_capacity},
637 {"disk_physical", ex_stats_disk_physical},
638 {"memory", ex_stats_memory},
639 {"vcpu", ex_stats_vcpu},
640 {NULL, ex_stats_none},
643 /* BlockDeviceFormatBasename */
644 static bool blockdevice_format_basename;
645 static enum bd_field blockdevice_format = target;
646 static enum if_field interface_format = if_name;
648 /* Time that we last refreshed. */
649 static time_t last_refresh = (time_t)0;
651 static int refresh_lists(struct lv_read_instance *inst);
652 static int register_event_impl(void);
653 static int start_event_loop(virt_notif_thread_t *thread_data);
655 struct lv_block_stats {
656 virDomainBlockStatsStruct bi;
658 long long rd_total_times;
659 long long wr_total_times;
662 long long fl_total_times;
665 static void init_block_stats(struct lv_block_stats *bstats) {
669 bstats->bi.rd_req = -1;
670 bstats->bi.wr_req = -1;
671 bstats->bi.rd_bytes = -1;
672 bstats->bi.wr_bytes = -1;
674 bstats->rd_total_times = -1;
675 bstats->wr_total_times = -1;
677 bstats->fl_total_times = -1;
680 static void init_block_info(virDomainBlockInfoPtr binfo) {
681 binfo->allocation = -1;
682 binfo->capacity = -1;
683 binfo->physical = -1;
686 #ifdef HAVE_BLOCK_STATS_FLAGS
688 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
689 if (!strcmp(param[i].field, NAME)) { \
690 bstats->FIELD = param[i].value.l; \
694 static int get_block_stats(struct lv_block_stats *bstats,
695 virTypedParameterPtr param, int nparams) {
696 if (bstats == NULL || param == NULL)
699 for (int i = 0; i < nparams; ++i) {
700 /* ignore type. Everything must be LLONG anyway. */
701 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
702 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
703 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
704 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
705 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
706 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
707 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
708 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
714 #undef GET_BLOCK_STATS_VALUE
716 #endif /* HAVE_BLOCK_STATS_FLAGS */
718 /* ERROR(...) macro for virterrors. */
719 #define VIRT_ERROR(conn, s) \
722 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
724 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
727 static char *metadata_get_hostname(virDomainPtr dom) {
728 const char *xpath_str = NULL;
729 if (hm_xpath == NULL)
730 xpath_str = "/instance/name/text()";
732 xpath_str = hm_xpath;
734 const char *namespace = NULL;
736 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
737 } // namespace =hm_ns;
742 char *metadata_str = virDomainGetMetadata(
743 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
744 if (metadata_str == NULL) {
748 char *hostname = NULL;
749 xmlXPathContextPtr xpath_ctx = NULL;
750 xmlXPathObjectPtr xpath_obj = NULL;
751 xmlNodePtr xml_node = NULL;
754 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
755 if (xml_doc == NULL) {
756 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
760 xpath_ctx = xmlXPathNewContext(xml_doc);
761 if (xpath_ctx == NULL) {
762 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
766 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
767 if (xpath_obj == NULL) {
768 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
773 if (xpath_obj->type != XPATH_NODESET) {
774 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
775 "(wanted %d) for metadata",
776 xpath_str, xpath_obj->type, XPATH_NODESET);
780 // TODO(sileht): We can support || operator by looping on nodes here
781 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
782 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
783 "expected=1 for metadata",
785 (xpath_obj->nodesetval == NULL) ? 0
786 : xpath_obj->nodesetval->nodeNr);
790 xml_node = xpath_obj->nodesetval->nodeTab[0];
791 if (xml_node->type == XML_TEXT_NODE) {
792 hostname = strdup((const char *)xml_node->content);
793 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
794 hostname = strdup((const char *)xml_node->children->content);
796 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
797 xpath_str, xml_node->type);
801 if (hostname == NULL) {
802 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
808 xmlXPathFreeObject(xpath_obj);
810 xmlXPathFreeContext(xpath_ctx);
817 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
819 char uuid[VIR_UUID_STRING_BUFLEN];
821 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
825 /* Construct the hostname field according to HostnameFormat. */
826 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
827 if (hostname_format[i] == hf_none)
831 SSTRNCAT(vl->host, ":", sizeof(vl->host));
833 switch (hostname_format[i]) {
837 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
840 name = virDomainGetName(dom);
842 SSTRNCAT(vl->host, name, sizeof(vl->host));
845 if (virDomainGetUUIDString(dom, uuid) == 0)
846 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
849 name = metadata_get_hostname(dom);
851 SSTRNCAT(vl->host, name, sizeof(vl->host));
856 /* Construct the plugin instance field according to PluginInstanceFormat. */
857 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
858 if (plugin_instance_format[i] == plginst_none)
862 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
864 switch (plugin_instance_format[i]) {
868 name = virDomainGetName(dom);
870 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
873 if (virDomainGetUUIDString(dom, uuid) == 0)
874 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
876 case plginst_metadata:
877 name = metadata_get_hostname(dom);
879 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
884 } /* void init_value_list */
886 static int init_notif(notification_t *notif, const virDomainPtr domain,
887 int severity, const char *msg, const char *type,
888 const char *type_instance) {
889 value_list_t vl = VALUE_LIST_INIT;
892 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
896 init_value_list(&vl, domain);
897 notification_init(notif, severity, msg, vl.host, vl.plugin,
898 vl.plugin_instance, type, type_instance);
899 notif->time = cdtime();
903 static void submit_notif(const virDomainPtr domain, int severity,
904 const char *msg, const char *type,
905 const char *type_instance) {
906 notification_t notif;
908 init_notif(¬if, domain, severity, msg, type, type_instance);
909 plugin_dispatch_notification(¬if);
911 plugin_notification_meta_free(notif.meta);
914 static void submit(virDomainPtr dom, char const *type,
915 char const *type_instance, value_t *values,
917 value_list_t vl = VALUE_LIST_INIT;
918 init_value_list(&vl, dom);
921 vl.values_len = values_len;
923 sstrncpy(vl.type, type, sizeof(vl.type));
924 if (type_instance != NULL)
925 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
927 plugin_dispatch_values(&vl);
930 static void memory_submit(virDomainPtr dom, gauge_t value) {
931 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
934 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
936 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
937 "minor_fault", "unused", "available",
938 "actual_balloon", "rss", "usable",
939 "last_update", "disk_caches"};
941 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
942 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: tag_index = %d",
947 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
950 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
951 virDomainPtr dom, const char *devname) {
957 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
958 } /* void submit_derive2 */
960 static double cpu_ns_to_percent(unsigned int node_cpus,
961 unsigned long long cpu_time_old,
962 unsigned long long cpu_time_new) {
963 double percent = 0.0;
964 unsigned long long cpu_time_diff = 0;
965 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
967 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
968 cpu_time_diff = cpu_time_new - cpu_time_old;
969 percent = ((double)(100 * cpu_time_diff)) /
970 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
973 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
974 " cpu_time_new=%" PRIu64 " cpu_time_diff=%" PRIu64
975 " time_diff_sec=%f percent=%f",
976 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
977 (uint64_t)cpu_time_diff, time_diff_sec, percent);
982 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
987 if (extra_stats & ex_stats_cpu_util) {
988 /* Computing %CPU requires 2 samples of cpuTime */
989 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
991 submit(dom->ptr, "percent", "virt_cpu_total",
992 &(value_t){.gauge = cpu_ns_to_percent(
993 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
998 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
1002 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
1004 char type_instance[DATA_MAX_NAME_LEN];
1006 ssnprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
1007 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
1010 static void disk_block_stats_submit(struct lv_block_stats *bstats,
1011 virDomainPtr dom, const char *dev,
1012 virDomainBlockInfoPtr binfo) {
1013 char *dev_copy = strdup(dev);
1014 const char *type_instance = dev_copy;
1019 if (blockdevice_format_basename && blockdevice_format == source)
1020 type_instance = basename(dev_copy);
1022 if (!type_instance) {
1027 char flush_type_instance[DATA_MAX_NAME_LEN];
1028 ssnprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1031 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1032 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1033 (derive_t)bstats->bi.wr_req, dom, type_instance);
1035 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1036 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1037 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1039 if (extra_stats & ex_stats_disk) {
1040 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1041 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1042 (derive_t)bstats->wr_total_times, dom, type_instance);
1044 if (bstats->fl_req != -1)
1045 submit(dom, "total_requests", flush_type_instance,
1046 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1047 if (bstats->fl_total_times != -1) {
1048 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1049 submit(dom, "total_time_in_ms", flush_type_instance,
1050 &(value_t){.derive = value}, 1);
1054 /* disk_allocation, disk_capacity and disk_physical are stored only
1055 * if corresponding extrastats are set in collectd configuration file */
1056 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1057 submit(dom, "disk_allocation", type_instance,
1058 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1060 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1061 submit(dom, "disk_capacity", type_instance,
1062 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1064 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1065 submit(dom, "disk_physical", type_instance,
1066 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1072 * Function for parsing ExtraStats configuration options.
1073 * Result of parsing is stored under 'out_parsed_flags' pointer.
1075 * Returns 0 in case of success and 1 in case of parsing error
1077 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1079 unsigned int ex_stats_flags = ex_stats_none;
1081 assert(out_parsed_flags != NULL);
1083 for (int i = 0; i < numexstats; i++) {
1084 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1085 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1086 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1087 ex_stats_table[j].name);
1088 ex_stats_flags |= ex_stats_table[j].flag;
1092 if (ex_stats_table[j + 1].name == NULL) {
1093 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1100 *out_parsed_flags = ex_stats_flags;
1104 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1105 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1106 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1110 char msg[DATA_MAX_NAME_LEN];
1111 const char *state_str = domain_states[state];
1112 #ifdef HAVE_DOM_REASON
1114 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1115 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1119 const char *reason_str = domain_reasons[state][reason];
1120 /* Array size for domain reasons is fixed, but different domain states can
1121 * have different number of reasons. We need to check if reason was
1122 * successfully parsed */
1124 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1129 const char *reason_str = "N/A";
1132 ssnprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1137 case VIR_DOMAIN_NOSTATE:
1138 case VIR_DOMAIN_RUNNING:
1139 case VIR_DOMAIN_SHUTDOWN:
1140 case VIR_DOMAIN_SHUTOFF:
1141 severity = NOTIF_OKAY;
1143 case VIR_DOMAIN_BLOCKED:
1144 case VIR_DOMAIN_PAUSED:
1145 #ifdef DOM_STATE_PMSUSPENDED
1146 case VIR_DOMAIN_PMSUSPENDED:
1148 severity = NOTIF_WARNING;
1150 case VIR_DOMAIN_CRASHED:
1151 severity = NOTIF_FAILURE;
1154 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1157 submit_notif(dom, severity, msg, "domain_state", NULL);
1160 static int lv_init_ignorelists() {
1161 if (il_domains == NULL)
1162 il_domains = ignorelist_create(1);
1163 if (il_block_devices == NULL)
1164 il_block_devices = ignorelist_create(1);
1165 if (il_interface_devices == NULL)
1166 il_interface_devices = ignorelist_create(1);
1168 if (!il_domains || !il_block_devices || !il_interface_devices)
1174 /* Validates config option that may take multiple strings arguments.
1175 * Returns 0 on success, -1 otherwise */
1176 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1178 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1182 if (ci->values_num < 1) {
1184 " plugin: the '%s' option requires at least one string argument",
1189 for (int i = 0; i < ci->values_num; ++i) {
1190 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1192 " plugin: one of the '%s' options is not a valid string",
1201 static int lv_config(oconfig_item_t *ci) {
1202 if (lv_init_ignorelists() != 0) {
1203 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1207 for (int i = 0; i < ci->children_num; ++i) {
1208 oconfig_item_t *c = ci->children + i;
1210 if (strcasecmp(c->key, "Connection") == 0) {
1211 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1215 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1216 if (cf_util_get_int(c, &interval) != 0)
1220 } else if (strcasecmp(c->key, "Domain") == 0) {
1221 char *domain_name = NULL;
1222 if (cf_util_get_string(c, &domain_name) != 0)
1225 if (ignorelist_add(il_domains, domain_name)) {
1226 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1234 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1235 char *device_name = NULL;
1236 if (cf_util_get_string(c, &device_name) != 0)
1239 if (ignorelist_add(il_block_devices, device_name) != 0) {
1241 " plugin: Adding '%s' to block-device-ignorelist failed",
1249 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1250 char *device_format = NULL;
1251 if (cf_util_get_string(c, &device_format) != 0)
1254 if (strcasecmp(device_format, "target") == 0)
1255 blockdevice_format = target;
1256 else if (strcasecmp(device_format, "source") == 0)
1257 blockdevice_format = source;
1259 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1261 sfree(device_format);
1265 sfree(device_format);
1267 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1268 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1272 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1273 char *interface_name = NULL;
1274 if (cf_util_get_string(c, &interface_name) != 0)
1277 if (ignorelist_add(il_interface_devices, interface_name)) {
1278 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1280 sfree(interface_name);
1284 sfree(interface_name);
1286 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1287 bool ignore_selected = false;
1288 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1291 if (ignore_selected) {
1292 ignorelist_set_invert(il_domains, 0);
1293 ignorelist_set_invert(il_block_devices, 0);
1294 ignorelist_set_invert(il_interface_devices, 0);
1296 ignorelist_set_invert(il_domains, 1);
1297 ignorelist_set_invert(il_block_devices, 1);
1298 ignorelist_set_invert(il_interface_devices, 1);
1302 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1303 if (cf_util_get_string(c, &hm_ns) != 0)
1307 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1308 if (cf_util_get_string(c, &hm_xpath) != 0)
1312 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1313 /* this option can take multiple strings arguments in one config line*/
1314 if (check_config_multiple_string_entry(c) != 0) {
1315 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1319 const int params_num = c->values_num;
1320 for (int i = 0; i < params_num; ++i) {
1321 const char *param_name = c->values[i].value.string;
1322 if (strcasecmp(param_name, "hostname") == 0)
1323 hostname_format[i] = hf_hostname;
1324 else if (strcasecmp(param_name, "name") == 0)
1325 hostname_format[i] = hf_name;
1326 else if (strcasecmp(param_name, "uuid") == 0)
1327 hostname_format[i] = hf_uuid;
1328 else if (strcasecmp(param_name, "metadata") == 0)
1329 hostname_format[i] = hf_metadata;
1331 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1337 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1338 hostname_format[i] = hf_none;
1341 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1342 /* this option can handle list of string parameters in one line*/
1343 if (check_config_multiple_string_entry(c) != 0) {
1345 " plugin: Could not get 'PluginInstanceFormat' parameter");
1349 const int params_num = c->values_num;
1350 for (int i = 0; i < params_num; ++i) {
1351 const char *param_name = c->values[i].value.string;
1352 if (strcasecmp(param_name, "none") == 0) {
1353 plugin_instance_format[i] = plginst_none;
1355 } else if (strcasecmp(param_name, "name") == 0)
1356 plugin_instance_format[i] = plginst_name;
1357 else if (strcasecmp(param_name, "uuid") == 0)
1358 plugin_instance_format[i] = plginst_uuid;
1359 else if (strcasecmp(param_name, "metadata") == 0)
1360 plugin_instance_format[i] = plginst_metadata;
1362 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1369 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1370 plugin_instance_format[i] = plginst_none;
1373 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1374 char *format = NULL;
1375 if (cf_util_get_string(c, &format) != 0)
1378 if (strcasecmp(format, "name") == 0)
1379 interface_format = if_name;
1380 else if (strcasecmp(format, "address") == 0)
1381 interface_format = if_address;
1382 else if (strcasecmp(format, "number") == 0)
1383 interface_format = if_number;
1385 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1392 } else if (strcasecmp(c->key, "Instances") == 0) {
1393 if (cf_util_get_int(c, &nr_instances) != 0)
1396 if (nr_instances <= 0) {
1397 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1400 if (nr_instances > NR_INSTANCES_MAX) {
1401 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1402 " use a lower setting or recompile the plugin.",
1403 nr_instances, NR_INSTANCES_MAX);
1407 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1409 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1410 char *ex_str = NULL;
1412 if (cf_util_get_string(c, &ex_str) != 0)
1415 char *exstats[EX_STATS_MAX_FIELDS];
1416 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1417 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1420 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1424 #ifdef HAVE_JOB_STATS
1425 if ((extra_stats & ex_stats_job_stats_completed) &&
1426 (extra_stats & ex_stats_job_stats_background)) {
1427 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1428 "type of job statistics can be collected at the same "
1434 /* ExtraStats parsed successfully */
1436 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1437 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1441 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1442 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1446 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1447 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1452 /* Unrecognised option. */
1453 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1461 static int lv_connect(void) {
1463 /* event implementation must be registered before connection is opened */
1464 if (!persistent_notification)
1465 if (register_event_impl() != 0)
1468 /* `conn_string == NULL' is acceptable */
1470 /* virDomainGetFSInfo requires full read-write access connection */
1471 if (extra_stats & ex_stats_fs_info)
1472 conn = virConnectOpen(conn_string);
1475 conn = virConnectOpenReadOnly(conn_string);
1477 c_complain(LOG_ERR, &conn_complain,
1478 PLUGIN_NAME " plugin: Unable to connect: "
1479 "virConnectOpen failed.");
1482 int status = virNodeGetInfo(conn, &nodeinfo);
1484 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1485 virConnectClose(conn);
1490 if (!persistent_notification)
1491 if (start_event_loop(¬if_thread) != 0) {
1492 virConnectClose(conn);
1497 c_release(LOG_NOTICE, &conn_complain,
1498 PLUGIN_NAME " plugin: Connection established.");
1502 static void lv_disconnect(void) {
1504 virConnectClose(conn);
1506 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1509 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1510 struct lv_block_stats *bstats) {
1511 #ifdef HAVE_BLOCK_STATS_FLAGS
1513 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1515 VIRT_ERROR(conn, "getting the disk params count");
1519 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1520 if (params == NULL) {
1521 ERROR(PLUGIN_NAME " plugin: alloc(%i) for block=%s parameters failed.",
1527 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1528 VIRT_ERROR(conn, "getting the disk params values");
1530 rc = get_block_stats(bstats, params, nparams);
1533 virTypedParamsClear(params, nparams);
1537 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1538 #endif /* HAVE_BLOCK_STATS_FLAGS */
1541 #ifdef HAVE_PERF_STATS
1542 static void perf_submit(virDomainStatsRecordPtr stats) {
1543 for (int i = 0; i < stats->nparams; ++i) {
1544 /* Replace '.' with '_' in event field to match other metrics' naming
1546 char *c = strchr(stats->params[i].field, '.');
1549 submit(stats->dom, "perf", stats->params[i].field,
1550 &(value_t){.derive = stats->params[i].value.ul}, 1);
1554 static int get_perf_events(virDomainPtr domain) {
1555 virDomainStatsRecordPtr *stats = NULL;
1556 /* virDomainListGetStats requires a NULL terminated list of domains */
1557 virDomainPtr domain_array[] = {domain, NULL};
1560 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1562 ERROR(PLUGIN_NAME " plugin: virDomainListGetStats failed with status %i.",
1565 virErrorPtr err = virGetLastError();
1566 if (err->code == VIR_ERR_NO_SUPPORT) {
1568 " plugin: Disabled unsupported ExtraStats selector: perf");
1569 extra_stats &= ~(ex_stats_perf);
1575 for (int i = 0; i < status; ++i)
1576 perf_submit(stats[i]);
1578 virDomainStatsRecordListFree(stats);
1581 #endif /* HAVE_PERF_STATS */
1583 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1584 unsigned char *cpu_maps, int cpu_map_len) {
1585 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1586 char type_instance[DATA_MAX_NAME_LEN];
1587 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1589 ssnprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu,
1591 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1595 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1596 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1598 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1599 if (vinfo == NULL) {
1600 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1604 int cpu_map_len = 0;
1605 unsigned char *cpumaps = NULL;
1606 if (extra_stats & ex_stats_vcpupin) {
1607 cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1608 cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1610 if (cpumaps == NULL) {
1611 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1618 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1620 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1623 virErrorPtr err = virGetLastError();
1624 if (err->code == VIR_ERR_NO_SUPPORT) {
1625 if (extra_stats & ex_stats_vcpu)
1627 " plugin: Disabled unsupported ExtraStats selector: vcpu");
1628 if (extra_stats & ex_stats_vcpupin)
1630 " plugin: Disabled unsupported ExtraStats selector: vcpupin");
1631 extra_stats &= ~(ex_stats_vcpu | ex_stats_vcpupin);
1639 for (int i = 0; i < nr_virt_cpu; ++i) {
1640 if (extra_stats & ex_stats_vcpu)
1641 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1642 if (extra_stats & ex_stats_vcpupin)
1643 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1651 #ifdef HAVE_CPU_STATS
1652 static int get_pcpu_stats(virDomainPtr dom) {
1653 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1655 VIRT_ERROR(conn, "getting the CPU params count");
1657 virErrorPtr err = virGetLastError();
1658 if (err->code == VIR_ERR_NO_SUPPORT) {
1660 " plugin: Disabled unsupported ExtraStats selector: pcpu");
1661 extra_stats &= ~(ex_stats_pcpu);
1667 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1668 if (param == NULL) {
1669 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1673 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1675 virTypedParamsClear(param, nparams);
1677 VIRT_ERROR(conn, "getting the CPU params values");
1681 unsigned long long total_user_cpu_time = 0;
1682 unsigned long long total_syst_cpu_time = 0;
1684 for (int i = 0; i < nparams; ++i) {
1685 if (!strcmp(param[i].field, "user_time"))
1686 total_user_cpu_time = param[i].value.ul;
1687 else if (!strcmp(param[i].field, "system_time"))
1688 total_syst_cpu_time = param[i].value.ul;
1691 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1692 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1695 virTypedParamsClear(param, nparams);
1700 #endif /* HAVE_CPU_STATS */
1702 #ifdef HAVE_DOM_REASON
1703 static int submit_domain_state(virDomainPtr domain) {
1704 int domain_state = 0;
1705 int domain_reason = 0;
1707 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1709 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1714 value_t values[] = {
1715 {.gauge = (gauge_t)domain_state},
1716 {.gauge = (gauge_t)domain_reason},
1719 submit(domain, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1724 #ifdef HAVE_LIST_ALL_DOMAINS
1725 static int get_domain_state_notify(virDomainPtr domain) {
1726 int domain_state = 0;
1727 int domain_reason = 0;
1729 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1731 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1736 domain_state_submit_notif(domain, domain_state, domain_reason);
1740 #endif /* HAVE_LIST_ALL_DOMAINS */
1741 #endif /* HAVE_DOM_REASON */
1743 static int get_memory_stats(virDomainPtr domain) {
1744 virDomainMemoryStatPtr minfo =
1745 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1746 if (minfo == NULL) {
1747 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1752 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1753 if (mem_stats < 0) {
1754 ERROR(PLUGIN_NAME " plugin: virDomainMemoryStats failed with mem_stats %i.",
1758 virErrorPtr err = virGetLastError();
1759 if (err->code == VIR_ERR_NO_SUPPORT) {
1761 " plugin: Disabled unsupported ExtraStats selector: memory");
1762 extra_stats &= ~(ex_stats_memory);
1768 derive_t swap_in = -1;
1769 derive_t swap_out = -1;
1770 derive_t min_flt = -1;
1771 derive_t maj_flt = -1;
1773 for (int i = 0; i < mem_stats; i++) {
1774 if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN)
1775 swap_in = minfo[i].val;
1776 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT)
1777 swap_out = minfo[i].val;
1778 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT)
1779 min_flt = minfo[i].val;
1780 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT)
1781 maj_flt = minfo[i].val;
1782 #ifdef LIBVIR_CHECK_VERSION
1783 #if LIBVIR_CHECK_VERSION(2, 1, 0)
1784 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE)
1785 /* Skip 'last_update' reporting as that is not memory but timestamp */
1790 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1793 if (swap_in > 0 || swap_out > 0) {
1794 submit(domain, "swap_io", "in", &(value_t){.gauge = swap_in}, 1);
1795 submit(domain, "swap_io", "out", &(value_t){.gauge = swap_out}, 1);
1798 if (min_flt > 0 || maj_flt > 0) {
1799 value_t values[] = {
1800 {.gauge = (gauge_t)min_flt},
1801 {.gauge = (gauge_t)maj_flt},
1803 submit(domain, "ps_pagefaults", NULL, values, STATIC_ARRAY_SIZE(values));
1810 #ifdef HAVE_DISK_ERR
1811 static void disk_err_submit(virDomainPtr domain,
1812 virDomainDiskErrorPtr disk_err) {
1813 submit(domain, "disk_error", disk_err->disk,
1814 &(value_t){.gauge = disk_err->error}, 1);
1817 static int get_disk_err(virDomainPtr domain) {
1818 /* Get preferred size of disk errors array */
1819 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1820 if (disk_err_count == -1) {
1822 " plugin: failed to get preferred size of disk errors array");
1824 virErrorPtr err = virGetLastError();
1826 if (err->code == VIR_ERR_NO_SUPPORT) {
1828 " plugin: Disabled unsupported ExtraStats selector: disk_err");
1829 extra_stats &= ~(ex_stats_disk_err);
1836 " plugin: preferred size of disk errors array: %d for domain %s",
1837 disk_err_count, virDomainGetName(domain));
1838 virDomainDiskError disk_err[disk_err_count];
1840 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1841 if (disk_err_count == -1) {
1842 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1847 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1848 disk_err_count, virDomainGetName(domain));
1850 for (int i = 0; i < disk_err_count; ++i) {
1851 disk_err_submit(domain, &disk_err[i]);
1852 sfree(disk_err[i].disk);
1857 #endif /* HAVE_DISK_ERR */
1859 static int get_block_device_stats(struct block_device *block_dev) {
1861 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1865 virDomainBlockInfo binfo;
1866 init_block_info(&binfo);
1868 /* Fetching block info stats only if needed*/
1869 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1870 ex_stats_disk_physical)) {
1871 /* Block info statistics can be only fetched from devices with 'source'
1873 if (block_dev->has_source) {
1874 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1876 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1879 virErrorPtr err = virGetLastError();
1880 if (err->code == VIR_ERR_NO_SUPPORT) {
1882 if (extra_stats & ex_stats_disk_allocation)
1883 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
1884 "selector: disk_allocation");
1885 if (extra_stats & ex_stats_disk_capacity)
1886 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
1887 "selector: disk_capacity");
1888 if (extra_stats & ex_stats_disk_physical)
1889 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
1890 "selector: disk_physical");
1892 extra_stats &= ~(ex_stats_disk_allocation | ex_stats_disk_capacity |
1893 ex_stats_disk_physical);
1901 struct lv_block_stats bstats;
1902 init_block_stats(&bstats);
1904 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1905 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1909 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1915 #define NM_ADD_ITEM(_fun, _name, _val) \
1917 ret = _fun(¬if, _name, _val); \
1919 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1924 #define NM_ADD_STR_ITEMS(_items, _size) \
1926 for (size_t _i = 0; _i < _size; ++_i) { \
1928 " plugin: Adding notification metadata name=%s value=%s", \
1929 _items[_i].name, _items[_i].value); \
1930 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1931 _items[_i].value); \
1935 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1936 notification_t notif;
1939 /* Local struct, just for the purpose of this function. */
1940 typedef struct nm_str_item_s {
1945 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1946 nm_str_item_t fs_str_items[] = {
1947 {.name = "mountpoint", .value = fs_info->mountpoint},
1948 {.name = "name", .value = fs_info->name},
1949 {.name = "fstype", .value = fs_info->fstype}};
1951 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1952 fs_dev_alias[i].name = "devAlias";
1953 fs_dev_alias[i].value = fs_info->devAlias[i];
1956 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1957 "file_system", NULL);
1958 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1959 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1960 fs_info->ndevAlias);
1961 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1963 plugin_dispatch_notification(¬if);
1967 plugin_notification_meta_free(notif.meta);
1971 #undef RETURN_ON_ERR
1972 #undef NM_ADD_STR_ITEMS
1974 static int get_fs_info(virDomainPtr domain) {
1975 virDomainFSInfoPtr *fs_info = NULL;
1978 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1979 if (mount_points_cnt == -1) {
1980 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1983 virErrorPtr err = virGetLastError();
1984 if (err->code == VIR_ERR_NO_SUPPORT) {
1986 " plugin: Disabled unsupported ExtraStats selector: fs_info");
1987 extra_stats &= ~(ex_stats_fs_info);
1993 for (int i = 0; i < mount_points_cnt; ++i) {
1994 if (fs_info_notify(domain, fs_info[i]) != 0) {
1995 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1996 "for mount point %s",
1997 fs_info[i]->mountpoint);
2000 virDomainFSInfoFree(fs_info[i]);
2007 #endif /* HAVE_FS_INFO */
2009 #ifdef HAVE_JOB_STATS
2010 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
2013 if (param->type == VIR_TYPED_PARAM_INT)
2014 vl.derive = param->value.i;
2015 else if (param->type == VIR_TYPED_PARAM_UINT)
2016 vl.derive = param->value.ui;
2017 else if (param->type == VIR_TYPED_PARAM_LLONG)
2018 vl.derive = param->value.l;
2019 else if (param->type == VIR_TYPED_PARAM_ULLONG)
2020 vl.derive = param->value.ul;
2021 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
2022 vl.derive = param->value.d;
2023 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
2024 vl.derive = param->value.b;
2025 else if (param->type == VIR_TYPED_PARAM_STRING) {
2026 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
2029 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
2033 submit(domain, "job_stats", param->field, &vl, 1);
2036 static int get_job_stats(virDomainPtr domain) {
2039 virTypedParameterPtr params = NULL;
2040 int flags = (extra_stats & ex_stats_job_stats_completed)
2041 ? VIR_DOMAIN_JOB_STATS_COMPLETED
2044 int ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
2046 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
2048 virErrorPtr err = virGetLastError();
2049 // VIR_ERR_INVALID_ARG returned when VIR_DOMAIN_JOB_STATS_COMPLETED flag is
2050 // not supported by driver
2051 if (err->code == VIR_ERR_NO_SUPPORT || err->code == VIR_ERR_INVALID_ARG) {
2052 if (extra_stats & ex_stats_job_stats_completed)
2053 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: "
2054 "job_stats_completed");
2055 if (extra_stats & ex_stats_job_stats_background)
2056 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: "
2057 "job_stats_background");
2059 ~(ex_stats_job_stats_completed | ex_stats_job_stats_background);
2064 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
2066 for (int i = 0; i < nparams; ++i) {
2067 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
2069 job_stats_submit(domain, ¶ms[i]);
2072 virTypedParamsFree(params, nparams);
2075 #endif /* HAVE_JOB_STATS */
2077 static int get_domain_metrics(domain_t *domain) {
2078 if (!domain || !domain->ptr) {
2079 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
2084 int status = virDomainGetInfo(domain->ptr, &info);
2086 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2091 if (extra_stats & ex_stats_domain_state) {
2092 #ifdef HAVE_DOM_REASON
2093 /* At this point we already know domain's state from virDomainGetInfo call,
2094 * however it doesn't provide a reason for entering particular state.
2095 * We need to get it from virDomainGetState.
2097 GET_STATS(submit_domain_state, "domain reason", domain->ptr);
2101 /* Gather remaining stats only for running domains */
2102 if (info.state != VIR_DOMAIN_RUNNING)
2105 #ifdef HAVE_CPU_STATS
2106 if (extra_stats & ex_stats_pcpu)
2107 get_pcpu_stats(domain->ptr);
2110 cpu_submit(domain, info.cpuTime);
2112 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
2114 if (extra_stats & (ex_stats_vcpu | ex_stats_vcpupin))
2115 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
2116 if (extra_stats & ex_stats_memory)
2117 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
2119 #ifdef HAVE_PERF_STATS
2120 if (extra_stats & ex_stats_perf)
2121 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
2125 if (extra_stats & ex_stats_fs_info)
2126 GET_STATS(get_fs_info, "file system info", domain->ptr);
2129 #ifdef HAVE_DISK_ERR
2130 if (extra_stats & ex_stats_disk_err)
2131 GET_STATS(get_disk_err, "disk errors", domain->ptr);
2134 #ifdef HAVE_JOB_STATS
2136 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
2137 GET_STATS(get_job_stats, "job stats", domain->ptr);
2140 /* Update cached virDomainInfo. It has to be done after cpu_submit */
2141 memcpy(&domain->info, &info, sizeof(domain->info));
2146 static int get_if_dev_stats(struct interface_device *if_dev) {
2147 virDomainInterfaceStatsStruct stats = {0};
2148 char *display_name = NULL;
2151 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
2155 switch (interface_format) {
2157 display_name = if_dev->address;
2160 display_name = if_dev->number;
2164 display_name = if_dev->path;
2167 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2168 sizeof(stats)) != 0) {
2169 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2173 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2174 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2175 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2177 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2178 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2179 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2181 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2182 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2183 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2185 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2186 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2187 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2191 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2192 virDomainPtr dom, int event, int detail,
2193 __attribute__((unused)) void *opaque) {
2194 int domain_state = map_domain_event_to_state(event);
2195 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2196 #ifdef HAVE_DOM_REASON
2197 domain_reason = map_domain_event_detail_to_reason(event, detail);
2199 domain_state_submit_notif(dom, domain_state, domain_reason);
2204 static void virt_eventloop_timeout_cb(int timer ATTRIBUTE_UNUSED,
2205 void *timer_info) {}
2207 static int register_event_impl(void) {
2208 if (virEventRegisterDefaultImpl() < 0) {
2209 virErrorPtr err = virGetLastError();
2211 " plugin: error while event implementation registering: %s",
2212 err && err->message ? err->message : "Unknown error");
2216 if (virEventAddTimeout(CDTIME_T_TO_MS(plugin_get_interval()),
2217 virt_eventloop_timeout_cb, NULL, NULL) < 0) {
2218 virErrorPtr err = virGetLastError();
2219 ERROR(PLUGIN_NAME " plugin: virEventAddTimeout failed: %s",
2220 err && err->message ? err->message : "Unknown error");
2227 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2228 const bool active) {
2229 assert(thread_data != NULL);
2230 pthread_mutex_lock(&thread_data->active_mutex);
2231 thread_data->is_active = active;
2232 pthread_mutex_unlock(&thread_data->active_mutex);
2235 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2236 bool active = false;
2238 assert(thread_data != NULL);
2239 pthread_mutex_lock(&thread_data->active_mutex);
2240 active = thread_data->is_active;
2241 pthread_mutex_unlock(&thread_data->active_mutex);
2246 /* worker function running default event implementation */
2247 static void *event_loop_worker(void *arg) {
2248 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2250 while (virt_notif_thread_is_active(thread_data)) {
2251 if (virEventRunDefaultImpl() < 0) {
2252 virErrorPtr err = virGetLastError();
2253 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2254 err && err->message ? err->message : "Unknown error");
2261 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2262 assert(thread_data != NULL);
2264 int ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2266 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2271 * '0' and positive integers are meaningful ID's, therefore setting
2272 * domain_event_cb_id to '-1'
2274 thread_data->domain_event_cb_id = -1;
2275 pthread_mutex_lock(&thread_data->active_mutex);
2276 thread_data->is_active = false;
2277 pthread_mutex_unlock(&thread_data->active_mutex);
2282 /* register domain event callback and start event loop thread */
2283 static int start_event_loop(virt_notif_thread_t *thread_data) {
2284 assert(thread_data != NULL);
2285 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2286 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2287 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2288 if (thread_data->domain_event_cb_id == -1) {
2289 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2293 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2295 virt_notif_thread_set_active(thread_data, 1);
2296 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2298 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2299 virt_notif_thread_set_active(thread_data, 0);
2300 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2301 thread_data->domain_event_cb_id = -1;
2308 /* stop event loop thread and deregister callback */
2309 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2311 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2314 if (virt_notif_thread_is_active(thread_data)) {
2315 virt_notif_thread_set_active(thread_data, 0);
2316 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2317 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2320 /* ... and de-registering event handler */
2321 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2322 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2323 thread_data->domain_event_cb_id = -1;
2327 static int persistent_domains_state_notification(void) {
2330 #ifdef HAVE_LIST_ALL_DOMAINS
2331 virDomainPtr *domains = NULL;
2332 n = virConnectListAllDomains(conn, &domains,
2333 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2335 VIRT_ERROR(conn, "reading list of persistent domains");
2338 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2339 /* Fetch each persistent domain's state and notify it */
2341 for (int i = 0; i < n; ++i) {
2342 status = get_domain_state_notify(domains[i]);
2345 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2346 virDomainGetName(domains[i]));
2348 virDomainFree(domains[i]);
2352 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2356 n = virConnectNumOfDomains(conn);
2359 /* Get list of domains. */
2360 domids = calloc(n, sizeof(*domids));
2361 if (domids == NULL) {
2362 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2365 n = virConnectListDomains(conn, domids, n);
2367 VIRT_ERROR(conn, "reading list of domains");
2371 /* Fetch info of each active domain and notify it */
2372 for (int i = 0; i < n; ++i) {
2374 virDomainPtr dom = NULL;
2375 dom = virDomainLookupByID(conn, domids[i]);
2377 VIRT_ERROR(conn, "virDomainLookupByID");
2378 /* Could be that the domain went away -- ignore it anyway. */
2381 status = virDomainGetInfo(dom, &info);
2383 /* virDomainGetState is not available. Submit 0, which corresponds to
2384 * unknown reason. */
2385 domain_state_submit_notif(dom, info.state, 0);
2387 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2399 static int lv_read(user_data_t *ud) {
2400 if (ud->data == NULL) {
2401 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2405 struct lv_read_instance *inst = ud->data;
2406 struct lv_read_state *state = &inst->read_state;
2409 if (lv_connect() < 0)
2412 /* Wait until inst#0 establish connection */
2414 DEBUG(PLUGIN_NAME " plugin#%s: Wait until inst#0 establish connection",
2419 int ret = virConnectIsAlive(conn);
2420 if (ret == 0) { /* Connection lost */
2421 if (inst->id == 0) {
2422 c_complain(LOG_ERR, &conn_complain,
2423 PLUGIN_NAME " plugin: Lost connection.");
2425 if (!persistent_notification)
2426 stop_event_loop(¬if_thread);
2437 /* Need to refresh domain or device lists? */
2438 if ((last_refresh == (time_t)0) ||
2439 ((interval > 0) && ((last_refresh + interval) <= t))) {
2440 if (refresh_lists(inst) != 0) {
2441 if (inst->id == 0) {
2442 if (!persistent_notification)
2443 stop_event_loop(¬if_thread);
2451 /* persistent domains state notifications are handled by instance 0 */
2452 if (inst->id == 0 && persistent_notification) {
2453 int status = persistent_domains_state_notification();
2455 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2456 "returned with status %i",
2461 for (int i = 0; i < state->nr_domains; ++i)
2462 DEBUG(PLUGIN_NAME " plugin: domain %s",
2463 virDomainGetName(state->domains[i].ptr));
2464 for (int i = 0; i < state->nr_block_devices; ++i)
2465 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2466 virDomainGetName(state->block_devices[i].dom),
2467 state->block_devices[i].path);
2468 for (int i = 0; i < state->nr_interface_devices; ++i)
2469 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2470 virDomainGetName(state->interface_devices[i].dom),
2471 state->interface_devices[i].path);
2474 /* Get domains' metrics */
2475 for (int i = 0; i < state->nr_domains; ++i) {
2476 domain_t *dom = &state->domains[i];
2479 status = get_domain_metrics(dom);
2480 #ifdef HAVE_DOM_REASON
2481 else if (extra_stats & ex_stats_domain_state)
2482 status = submit_domain_state(dom->ptr);
2486 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2487 virDomainGetName(dom->ptr));
2490 /* Get block device stats for each domain. */
2491 for (int i = 0; i < state->nr_block_devices; ++i) {
2492 int status = get_block_device_stats(&state->block_devices[i]);
2495 " plugin: failed to get stats for block device (%s) in domain %s",
2496 state->block_devices[i].path,
2497 virDomainGetName(state->block_devices[i].dom));
2500 /* Get interface stats for each domain. */
2501 for (int i = 0; i < state->nr_interface_devices; ++i) {
2502 int status = get_if_dev_stats(&state->interface_devices[i]);
2506 " plugin: failed to get interface stats for device (%s) in domain %s",
2507 state->interface_devices[i].path,
2508 virDomainGetName(state->interface_devices[i].dom));
2514 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2515 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2516 struct lv_read_instance *inst = &(lv_ud->inst);
2518 memset(lv_ud, 0, sizeof(*lv_ud));
2520 ssnprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2523 user_data_t *ud = &(lv_ud->ud);
2525 ud->free_func = NULL;
2527 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2529 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2532 static void lv_clean_read_state(struct lv_read_state *state) {
2533 free_block_devices(state);
2534 free_interface_devices(state);
2535 free_domains(state);
2538 static void lv_fini_instance(size_t i) {
2539 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2540 struct lv_read_state *state = &(inst->read_state);
2542 lv_clean_read_state(state);
2544 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2547 static int lv_init(void) {
2548 if (virInitialize() != 0)
2551 /* Init ignorelists if there was no explicit configuration */
2552 if (lv_init_ignorelists() != 0)
2555 if (!persistent_notification)
2556 if (virt_notif_thread_init(¬if_thread) != 0)
2561 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2563 for (int i = 0; i < nr_instances; ++i)
2564 if (lv_init_instance(i, lv_read) != 0)
2571 * returns 0 on success and <0 on error
2573 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2575 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2576 xmlXPathObjectPtr xpath_obj = NULL;
2577 xmlNodePtr xml_node = NULL;
2581 err = xmlXPathRegisterNs(xpath_ctx,
2582 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2583 (const xmlChar *)METADATA_VM_PARTITION_URI);
2585 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2586 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2590 ssnprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2591 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2592 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2593 if (xpath_obj == NULL) {
2594 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2595 xpath_str, dom_name);
2599 if (xpath_obj->type != XPATH_NODESET) {
2600 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2601 "(wanted %d) on domain %s",
2602 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2607 * from now on there is no real error, it's ok if a domain
2608 * doesn't have the metadata partition tag.
2611 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2612 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2613 "expected=1 on domain %s",
2615 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2618 xml_node = xpath_obj->nodesetval->nodeTab[0];
2619 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2623 /* deregister to clean up */
2624 err = xmlXPathRegisterNs(xpath_ctx,
2625 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2627 /* we can't really recover here */
2629 " plugin: deregistration of namespace %s failed for domain %s",
2630 METADATA_VM_PARTITION_PREFIX, dom_name);
2633 xmlXPathFreeObject(xpath_obj);
2638 static int is_known_tag(const char *dom_tag) {
2639 for (int i = 0; i < nr_instances; ++i)
2640 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2645 static int lv_instance_include_domain(struct lv_read_instance *inst,
2646 const char *dom_name,
2647 const char *dom_tag) {
2648 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2651 /* instance#0 will always be there, so it is in charge of extra duties */
2652 if (inst->id == 0) {
2653 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2654 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2655 "with unknown tag '%s'",
2656 inst->tag, dom_name, dom_tag);
2664 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2665 const char *domname,
2666 xmlXPathContextPtr xpath_ctx) {
2667 xmlXPathObjectPtr xpath_obj =
2668 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2670 if (xpath_obj == NULL) {
2671 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2676 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2677 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2681 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2682 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2683 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2684 char *path_str = NULL;
2685 char *source_str = NULL;
2690 /* Fetching path and source for block device */
2691 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2692 if (child->type != XML_ELEMENT_NODE)
2695 /* we are interested only in either "target" or "source" elements */
2696 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2697 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2698 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2699 /* name of the source is located in "dev" or "file" element (it depends
2700 * on type of source). Trying "dev" at first*/
2701 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2703 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2705 /* ignoring any other element*/
2708 /* source_str will be interpreted as a device path if blockdevice_format
2709 * param is set to 'source'. */
2710 const char *device_path =
2711 (blockdevice_format == source) ? source_str : path_str;
2714 /* no path found and we can't add block_device without it */
2715 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2716 "domain %s - disk device will be ignored in reports",
2721 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2722 /* we only have to store information whether 'source' exists or not */
2723 bool has_source = (source_str != NULL) ? true : false;
2725 add_block_device(state, dom, device_path, has_source);
2733 xmlFree(source_str);
2737 xmlXPathFreeObject(xpath_obj);
2740 static void lv_add_network_interfaces(struct lv_read_state *state,
2741 virDomainPtr dom, const char *domname,
2742 xmlXPathContextPtr xpath_ctx) {
2743 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2744 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2746 if (xpath_obj == NULL)
2749 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2750 xmlXPathFreeObject(xpath_obj);
2754 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2756 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2758 char *address = NULL;
2759 const int itf_number = j + 1;
2761 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2765 for (xmlNodePtr child = xml_interface->children; child;
2766 child = child->next) {
2767 if (child->type != XML_ELEMENT_NODE)
2770 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2771 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2774 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2775 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2781 bool device_ignored = false;
2782 switch (interface_format) {
2784 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2785 device_ignored = true;
2788 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2789 device_ignored = true;
2792 char number_string[4];
2793 ssnprintf(number_string, sizeof(number_string), "%d", itf_number);
2794 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2796 device_ignored = true;
2799 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2803 if (!device_ignored)
2804 add_interface_device(state, dom, path, address, itf_number);
2811 xmlXPathFreeObject(xpath_obj);
2814 static bool is_domain_ignored(virDomainPtr dom) {
2815 const char *domname = virDomainGetName(dom);
2817 if (domname == NULL) {
2818 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2822 if (ignorelist_match(il_domains, domname) != 0) {
2824 " plugin: ignoring domain '%s' because of ignorelist option",
2832 static int refresh_lists(struct lv_read_instance *inst) {
2833 struct lv_read_state *state = &inst->read_state;
2836 #ifndef HAVE_LIST_ALL_DOMAINS
2837 n = virConnectNumOfDomains(conn);
2839 VIRT_ERROR(conn, "reading number of domains");
2844 lv_clean_read_state(state);
2846 #ifndef HAVE_LIST_ALL_DOMAINS
2851 #ifdef HAVE_LIST_ALL_DOMAINS
2852 virDomainPtr *domains, *domains_inactive;
2853 int m = virConnectListAllDomains(conn, &domains_inactive,
2854 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2855 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2857 /* Get list of domains. */
2858 int *domids = calloc(n, sizeof(*domids));
2859 if (domids == NULL) {
2860 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2864 n = virConnectListDomains(conn, domids, n);
2868 VIRT_ERROR(conn, "reading list of domains");
2869 #ifndef HAVE_LIST_ALL_DOMAINS
2872 for (int i = 0; i < m; ++i)
2873 virDomainFree(domains_inactive[i]);
2874 sfree(domains_inactive);
2879 #ifdef HAVE_LIST_ALL_DOMAINS
2880 for (int i = 0; i < m; ++i)
2881 if (is_domain_ignored(domains_inactive[i]) ||
2882 add_domain(state, domains_inactive[i], 0) < 0) {
2883 /* domain ignored or failed during adding to domains list*/
2884 virDomainFree(domains_inactive[i]);
2885 domains_inactive[i] = NULL;
2890 /* Fetch each domain and add it to the list, unless ignore. */
2891 for (int i = 0; i < n; ++i) {
2893 #ifdef HAVE_LIST_ALL_DOMAINS
2894 virDomainPtr dom = domains[i];
2896 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2898 VIRT_ERROR(conn, "virDomainLookupByID");
2899 /* Could be that the domain went away -- ignore it anyway. */
2904 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2906 * domain ignored or failed during adding to domains list
2908 * When domain is already tracked, then there is
2909 * no problem with memory handling (will be freed
2910 * with the rest of domains cached data)
2911 * But in case of error like this (error occurred
2912 * before adding domain to track) we have to take
2913 * care it ourselves and call virDomainFree
2919 const char *domname = virDomainGetName(dom);
2920 if (domname == NULL) {
2921 VIRT_ERROR(conn, "virDomainGetName");
2926 int status = virDomainGetInfo(dom, &info);
2928 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2933 if (info.state != VIR_DOMAIN_RUNNING) {
2934 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2938 /* Get a list of devices for this domain. */
2939 xmlDocPtr xml_doc = NULL;
2940 xmlXPathContextPtr xpath_ctx = NULL;
2942 char *xml = virDomainGetXMLDesc(dom, 0);
2944 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2948 /* Yuck, XML. Parse out the devices. */
2949 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2950 if (xml_doc == NULL) {
2951 VIRT_ERROR(conn, "xmlReadDoc");
2955 xpath_ctx = xmlXPathNewContext(xml_doc);
2957 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2958 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2959 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2963 if (!lv_instance_include_domain(inst, domname, tag))
2966 /* Block devices. */
2967 if (report_block_devices)
2968 lv_add_block_devices(state, dom, domname, xpath_ctx);
2970 /* Network interfaces. */
2971 if (report_network_interfaces)
2972 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2976 xmlXPathFreeContext(xpath_ctx);
2978 xmlFreeDoc(xml_doc);
2982 #ifdef HAVE_LIST_ALL_DOMAINS
2983 /* NOTE: domains_active and domains_inactive data will be cleared during
2984 refresh of all domains (inside lv_clean_read_state function) so we need
2985 to free here only allocated arrays */
2987 sfree(domains_inactive);
2994 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2995 " domains=%i block_devices=%i iface_devices=%i",
2996 inst->tag, state->nr_domains, state->nr_block_devices,
2997 state->nr_interface_devices);
3002 static void free_domains(struct lv_read_state *state) {
3003 if (state->domains) {
3004 for (int i = 0; i < state->nr_domains; ++i)
3005 virDomainFree(state->domains[i].ptr);
3006 sfree(state->domains);
3008 state->domains = NULL;
3009 state->nr_domains = 0;
3012 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
3014 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
3016 domain_t *new_ptr = realloc(state->domains, new_size);
3017 if (new_ptr == NULL) {
3018 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
3022 state->domains = new_ptr;
3023 state->domains[state->nr_domains].ptr = dom;
3024 state->domains[state->nr_domains].active = active;
3025 memset(&state->domains[state->nr_domains].info, 0,
3026 sizeof(state->domains[state->nr_domains].info));
3028 return state->nr_domains++;
3031 static void free_block_devices(struct lv_read_state *state) {
3032 if (state->block_devices) {
3033 for (int i = 0; i < state->nr_block_devices; ++i)
3034 sfree(state->block_devices[i].path);
3035 sfree(state->block_devices);
3037 state->block_devices = NULL;
3038 state->nr_block_devices = 0;
3041 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
3042 const char *path, bool has_source) {
3044 char *path_copy = strdup(path);
3049 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
3051 struct block_device *new_ptr = realloc(state->block_devices, new_size);
3052 if (new_ptr == NULL) {
3056 state->block_devices = new_ptr;
3057 state->block_devices[state->nr_block_devices].dom = dom;
3058 state->block_devices[state->nr_block_devices].path = path_copy;
3059 state->block_devices[state->nr_block_devices].has_source = has_source;
3060 return state->nr_block_devices++;
3063 static void free_interface_devices(struct lv_read_state *state) {
3064 if (state->interface_devices) {
3065 for (int i = 0; i < state->nr_interface_devices; ++i) {
3066 sfree(state->interface_devices[i].path);
3067 sfree(state->interface_devices[i].address);
3068 sfree(state->interface_devices[i].number);
3070 sfree(state->interface_devices);
3072 state->interface_devices = NULL;
3073 state->nr_interface_devices = 0;
3076 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
3077 const char *path, const char *address,
3078 unsigned int number) {
3080 if ((path == NULL) || (address == NULL))
3083 char *path_copy = strdup(path);
3087 char *address_copy = strdup(address);
3088 if (!address_copy) {
3093 char number_string[21];
3094 ssnprintf(number_string, sizeof(number_string), "interface-%u", number);
3095 char *number_copy = strdup(number_string);
3098 sfree(address_copy);
3103 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
3105 struct interface_device *new_ptr =
3106 realloc(state->interface_devices, new_size);
3107 if (new_ptr == NULL) {
3109 sfree(address_copy);
3114 state->interface_devices = new_ptr;
3115 state->interface_devices[state->nr_interface_devices].dom = dom;
3116 state->interface_devices[state->nr_interface_devices].path = path_copy;
3117 state->interface_devices[state->nr_interface_devices].address = address_copy;
3118 state->interface_devices[state->nr_interface_devices].number = number_copy;
3119 return state->nr_interface_devices++;
3122 static int ignore_device_match(ignorelist_t *il, const char *domname,
3123 const char *devpath) {
3124 if ((domname == NULL) || (devpath == NULL))
3127 size_t n = strlen(domname) + strlen(devpath) + 2;
3128 char *name = malloc(n);
3130 ERROR(PLUGIN_NAME " plugin: malloc failed.");
3133 ssnprintf(name, n, "%s:%s", domname, devpath);
3134 int r = ignorelist_match(il, name);
3139 static int lv_shutdown(void) {
3140 for (int i = 0; i < nr_instances; ++i) {
3141 lv_fini_instance(i);
3144 if (!persistent_notification)
3145 stop_event_loop(¬if_thread);
3149 ignorelist_free(il_domains);
3151 ignorelist_free(il_block_devices);
3152 il_block_devices = NULL;
3153 ignorelist_free(il_interface_devices);
3154 il_interface_devices = NULL;
3159 void module_register(void) {
3160 plugin_register_complex_config("virt", lv_config);
3161 plugin_register_init(PLUGIN_NAME, lv_init);
3162 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);