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] =
356 "the reason is unknown",
358 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
359 "the reason is unknown",
360 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
361 "normal startup from boot",
362 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
363 "migrated from another host",
364 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
365 "restored from a state file",
366 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
367 "restored from snapshot",
368 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
369 "returned from paused state",
370 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
371 "returned from migration",
372 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
373 "returned from failed save process",
374 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
375 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
376 "returned from pmsuspended due to wakeup event",
378 #ifdef HAVE_DOM_REASON_CRASHED
379 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
380 "resumed from crashed",
382 #ifdef HAVE_DOM_REASON_POSTCOPY
383 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
384 "running in post-copy migration mode",
386 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
387 "the reason is unknown",
389 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
390 "the reason is unknown",
391 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
393 "paused for offline migration",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
395 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
396 "paused for offline core dump",
397 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
398 "paused due to a disk I/O error",
399 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
400 "paused due to a watchdog event",
401 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
402 "paused after restoring from snapshot",
403 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
404 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
405 "paused during shutdown process",
407 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
408 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
409 "paused while creating a snapshot",
411 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
412 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
413 "paused due to a guest crash",
415 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
416 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
417 "the domain is being started",
419 #ifdef HAVE_DOM_REASON_POSTCOPY
420 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
421 "paused for post-copy migration",
422 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
423 "paused after failed post-copy",
425 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
426 "the reason is unknown",
427 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
428 "shutting down on user request",
430 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
431 "the reason is unknown",
432 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
433 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
434 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
435 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
436 "migrated to another host",
437 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
438 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
439 "domain failed to start",
440 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
441 "restored from a snapshot which was taken while domain was shutoff",
442 #ifdef HAVE_DOM_REASON_SHUTOFF_DAEMON
443 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DAEMON] =
444 "daemon decides to kill domain during reconnection processing",
447 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
448 "the reason is unknown",
449 #ifdef VIR_DOMAIN_CRASHED_PANICKED
450 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
453 #ifdef HAVE_DOM_STATE_PMSUSPENDED
454 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
455 "the reason is unknown",
458 #endif /* HAVE_DOM_REASON */
460 #define NANOSEC_IN_SEC 1e9
462 #define GET_STATS(_f, _name, ...) \
464 status = _f(__VA_ARGS__); \
466 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
470 static virConnectPtr conn;
471 static char *conn_string;
472 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
474 /* Node information required for %CPU */
475 static virNodeInfo nodeinfo;
477 /* Seconds between list refreshes, 0 disables completely. */
478 static int interval = 60;
480 /* List of domains, if specified. */
481 static ignorelist_t *il_domains;
482 /* List of block devices, if specified. */
483 static ignorelist_t *il_block_devices;
484 /* List of network interface devices, if specified. */
485 static ignorelist_t *il_interface_devices;
487 static int ignore_device_match(ignorelist_t *, const char *domname,
488 const char *devpath);
490 /* Actual list of block devices found on last refresh. */
491 struct block_device {
492 virDomainPtr dom; /* domain */
493 char *path; /* name of block device */
494 bool has_source; /* information whether source is defined or not */
497 /* Actual list of network interfaces found on last refresh. */
498 struct interface_device {
499 virDomainPtr dom; /* domain */
500 char *path; /* name of interface device */
501 char *address; /* mac address of interface device */
502 char *number; /* interface device number */
505 typedef struct domain_s {
511 struct lv_read_state {
512 /* Actual list of domains found on last refresh. */
516 struct block_device *block_devices;
517 int nr_block_devices;
519 struct interface_device *interface_devices;
520 int nr_interface_devices;
523 static void free_domains(struct lv_read_state *state);
524 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
527 static void free_block_devices(struct lv_read_state *state);
528 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
529 const char *path, bool has_source);
531 static void free_interface_devices(struct lv_read_state *state);
532 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
533 const char *path, const char *address,
534 unsigned int number);
536 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
537 #define METADATA_VM_PARTITION_ELEMENT "tag"
538 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
540 #define BUFFER_MAX_LEN 256
541 #define PARTITION_TAG_MAX_LEN 32
543 struct lv_read_instance {
544 struct lv_read_state read_state;
545 char tag[PARTITION_TAG_MAX_LEN];
549 struct lv_user_data {
550 struct lv_read_instance inst;
554 #define NR_INSTANCES_DEFAULT 1
555 #define NR_INSTANCES_MAX 128
556 static int nr_instances = NR_INSTANCES_DEFAULT;
557 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
559 /* HostnameFormat. */
560 #define HF_MAX_FIELDS 4
562 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
564 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
566 /* PluginInstanceFormat */
567 #define PLGINST_MAX_FIELDS 3
576 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
579 /* HostnameMetadataNS && HostnameMetadataXPath */
580 static char *hm_xpath;
583 /* BlockDeviceFormat */
584 enum bd_field { target, source };
586 /* InterfaceFormat. */
587 enum if_field { if_address, if_name, if_number };
590 #define EX_STATS_MAX_FIELDS 15
593 ex_stats_disk = 1 << 0,
594 ex_stats_pcpu = 1 << 1,
595 ex_stats_cpu_util = 1 << 2,
596 ex_stats_domain_state = 1 << 3,
597 #ifdef HAVE_PERF_STATS
598 ex_stats_perf = 1 << 4,
600 ex_stats_vcpupin = 1 << 5,
602 ex_stats_disk_err = 1 << 6,
605 ex_stats_fs_info = 1 << 7,
607 #ifdef HAVE_JOB_STATS
608 ex_stats_job_stats_completed = 1 << 8,
609 ex_stats_job_stats_background = 1 << 9,
611 ex_stats_disk_allocation = 1 << 10,
612 ex_stats_disk_capacity = 1 << 11,
613 ex_stats_disk_physical = 1 << 12,
614 ex_stats_memory = 1 << 13,
615 ex_stats_vcpu = 1 << 14
618 static unsigned int extra_stats = ex_stats_none;
620 struct ex_stats_item {
624 static const struct ex_stats_item ex_stats_table[] = {
625 {"disk", ex_stats_disk},
626 {"pcpu", ex_stats_pcpu},
627 {"cpu_util", ex_stats_cpu_util},
628 {"domain_state", ex_stats_domain_state},
629 #ifdef HAVE_PERF_STATS
630 {"perf", ex_stats_perf},
632 {"vcpupin", ex_stats_vcpupin},
634 {"disk_err", ex_stats_disk_err},
637 {"fs_info", ex_stats_fs_info},
639 #ifdef HAVE_JOB_STATS
640 {"job_stats_completed", ex_stats_job_stats_completed},
641 {"job_stats_background", ex_stats_job_stats_background},
643 {"disk_allocation", ex_stats_disk_allocation},
644 {"disk_capacity", ex_stats_disk_capacity},
645 {"disk_physical", ex_stats_disk_physical},
646 {"memory", ex_stats_memory},
647 {"vcpu", ex_stats_vcpu},
648 {NULL, ex_stats_none},
651 /* BlockDeviceFormatBasename */
652 static bool blockdevice_format_basename;
653 static enum bd_field blockdevice_format = target;
654 static enum if_field interface_format = if_name;
656 /* Time that we last refreshed. */
657 static time_t last_refresh = (time_t)0;
659 static int refresh_lists(struct lv_read_instance *inst);
660 static int register_event_impl(void);
661 static int start_event_loop(virt_notif_thread_t *thread_data);
663 struct lv_block_stats {
664 virDomainBlockStatsStruct bi;
666 long long rd_total_times;
667 long long wr_total_times;
670 long long fl_total_times;
673 static void init_block_stats(struct lv_block_stats *bstats) {
677 bstats->bi.rd_req = -1;
678 bstats->bi.wr_req = -1;
679 bstats->bi.rd_bytes = -1;
680 bstats->bi.wr_bytes = -1;
682 bstats->rd_total_times = -1;
683 bstats->wr_total_times = -1;
685 bstats->fl_total_times = -1;
688 static void init_block_info(virDomainBlockInfoPtr binfo) {
689 binfo->allocation = -1;
690 binfo->capacity = -1;
691 binfo->physical = -1;
694 #ifdef HAVE_BLOCK_STATS_FLAGS
696 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
697 if (!strcmp(param[i].field, NAME)) { \
698 bstats->FIELD = param[i].value.l; \
702 static int get_block_stats(struct lv_block_stats *bstats,
703 virTypedParameterPtr param, int nparams) {
704 if (bstats == NULL || param == NULL)
707 for (int i = 0; i < nparams; ++i) {
708 /* ignore type. Everything must be LLONG anyway. */
709 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
710 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
711 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
712 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
713 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
714 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
715 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
716 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
722 #undef GET_BLOCK_STATS_VALUE
724 #endif /* HAVE_BLOCK_STATS_FLAGS */
726 /* ERROR(...) macro for virterrors. */
727 #define VIRT_ERROR(conn, s) \
730 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
732 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
735 static char *metadata_get_hostname(virDomainPtr dom) {
736 const char *xpath_str = NULL;
737 if (hm_xpath == NULL)
738 xpath_str = "/instance/name/text()";
740 xpath_str = hm_xpath;
742 const char *namespace = NULL;
744 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
749 char *metadata_str = virDomainGetMetadata(
750 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
751 if (metadata_str == NULL) {
755 char *hostname = NULL;
756 xmlXPathContextPtr xpath_ctx = NULL;
757 xmlXPathObjectPtr xpath_obj = NULL;
758 xmlNodePtr xml_node = NULL;
761 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
762 if (xml_doc == NULL) {
763 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
767 xpath_ctx = xmlXPathNewContext(xml_doc);
768 if (xpath_ctx == NULL) {
769 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
773 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
774 if (xpath_obj == NULL) {
775 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
780 if (xpath_obj->type != XPATH_NODESET) {
781 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
782 "(wanted %d) for metadata",
783 xpath_str, xpath_obj->type, XPATH_NODESET);
787 // TODO(sileht): We can support || operator by looping on nodes here
788 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
789 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
790 "expected=1 for metadata",
792 (xpath_obj->nodesetval == NULL) ? 0
793 : xpath_obj->nodesetval->nodeNr);
797 xml_node = xpath_obj->nodesetval->nodeTab[0];
798 if (xml_node->type == XML_TEXT_NODE) {
799 hostname = strdup((const char *)xml_node->content);
800 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
801 hostname = strdup((const char *)xml_node->children->content);
803 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
804 xpath_str, xml_node->type);
808 if (hostname == NULL) {
809 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
815 xmlXPathFreeObject(xpath_obj);
817 xmlXPathFreeContext(xpath_ctx);
824 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
826 char uuid[VIR_UUID_STRING_BUFLEN];
828 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
832 /* Construct the hostname field according to HostnameFormat. */
833 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
834 if (hostname_format[i] == hf_none)
838 SSTRNCAT(vl->host, ":", sizeof(vl->host));
840 switch (hostname_format[i]) {
844 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
847 name = virDomainGetName(dom);
849 SSTRNCAT(vl->host, name, sizeof(vl->host));
852 if (virDomainGetUUIDString(dom, uuid) == 0)
853 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
856 name = metadata_get_hostname(dom);
858 SSTRNCAT(vl->host, name, sizeof(vl->host));
863 /* Construct the plugin instance field according to PluginInstanceFormat. */
864 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
865 if (plugin_instance_format[i] == plginst_none)
869 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
871 switch (plugin_instance_format[i]) {
875 name = virDomainGetName(dom);
877 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
880 if (virDomainGetUUIDString(dom, uuid) == 0)
881 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
883 case plginst_metadata:
884 name = metadata_get_hostname(dom);
886 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
891 } /* void init_value_list */
893 static int init_notif(notification_t *notif, const virDomainPtr domain,
894 int severity, const char *msg, const char *type,
895 const char *type_instance) {
896 value_list_t vl = VALUE_LIST_INIT;
899 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
903 init_value_list(&vl, domain);
904 notification_init(notif, severity, msg, vl.host, vl.plugin,
905 vl.plugin_instance, type, type_instance);
906 notif->time = cdtime();
910 static void submit_notif(const virDomainPtr domain, int severity,
911 const char *msg, const char *type,
912 const char *type_instance) {
913 notification_t notif;
915 init_notif(¬if, domain, severity, msg, type, type_instance);
916 plugin_dispatch_notification(¬if);
918 plugin_notification_meta_free(notif.meta);
921 static void submit(virDomainPtr dom, char const *type,
922 char const *type_instance, value_t *values,
924 value_list_t vl = VALUE_LIST_INIT;
925 init_value_list(&vl, dom);
928 vl.values_len = values_len;
930 sstrncpy(vl.type, type, sizeof(vl.type));
931 if (type_instance != NULL)
932 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
934 plugin_dispatch_values(&vl);
937 static void memory_submit(virDomainPtr dom, gauge_t value) {
938 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
941 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
943 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
944 "minor_fault", "unused", "available",
945 "actual_balloon", "rss", "usable",
946 "last_update", "disk_caches"};
948 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
949 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: tag_index = %d",
954 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
957 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
958 virDomainPtr dom, const char *devname) {
960 {.derive = v0}, {.derive = v1},
963 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
964 } /* void submit_derive2 */
966 static double cpu_ns_to_percent(unsigned int node_cpus,
967 unsigned long long cpu_time_old,
968 unsigned long long cpu_time_new) {
969 double percent = 0.0;
970 unsigned long long cpu_time_diff = 0;
971 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
973 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
974 cpu_time_diff = cpu_time_new - cpu_time_old;
975 percent = ((double)(100 * cpu_time_diff)) /
976 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
979 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
980 " cpu_time_new=%" PRIu64 " cpu_time_diff=%" PRIu64
981 " time_diff_sec=%f percent=%f",
982 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
983 (uint64_t)cpu_time_diff, time_diff_sec, percent);
988 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
993 if (extra_stats & ex_stats_cpu_util) {
994 /* Computing %CPU requires 2 samples of cpuTime */
995 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
997 submit(dom->ptr, "percent", "virt_cpu_total",
998 &(value_t){.gauge = cpu_ns_to_percent(
999 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
1004 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
1008 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
1010 char type_instance[DATA_MAX_NAME_LEN];
1012 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
1013 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
1016 static void disk_block_stats_submit(struct lv_block_stats *bstats,
1017 virDomainPtr dom, const char *dev,
1018 virDomainBlockInfoPtr binfo) {
1019 char *dev_copy = strdup(dev);
1020 const char *type_instance = dev_copy;
1025 if (blockdevice_format_basename && blockdevice_format == source)
1026 type_instance = basename(dev_copy);
1028 if (!type_instance) {
1033 char flush_type_instance[DATA_MAX_NAME_LEN];
1034 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1037 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1038 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1039 (derive_t)bstats->bi.wr_req, dom, type_instance);
1041 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1042 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1043 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1045 if (extra_stats & ex_stats_disk) {
1046 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1047 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1048 (derive_t)bstats->wr_total_times, dom, type_instance);
1050 if (bstats->fl_req != -1)
1051 submit(dom, "total_requests", flush_type_instance,
1052 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1053 if (bstats->fl_total_times != -1) {
1054 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1055 submit(dom, "total_time_in_ms", flush_type_instance,
1056 &(value_t){.derive = value}, 1);
1060 /* disk_allocation, disk_capacity and disk_physical are stored only
1061 * if corresponding extrastats are set in collectd configuration file */
1062 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1063 submit(dom, "disk_allocation", type_instance,
1064 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1066 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1067 submit(dom, "disk_capacity", type_instance,
1068 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1070 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1071 submit(dom, "disk_physical", type_instance,
1072 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1078 * Function for parsing ExtraStats configuration options.
1079 * Result of parsing is stored under 'out_parsed_flags' pointer.
1081 * Returns 0 in case of success and 1 in case of parsing error
1083 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1085 unsigned int ex_stats_flags = ex_stats_none;
1087 assert(out_parsed_flags != NULL);
1089 for (int i = 0; i < numexstats; i++) {
1090 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1091 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1092 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1093 ex_stats_table[j].name);
1094 ex_stats_flags |= ex_stats_table[j].flag;
1098 if (ex_stats_table[j + 1].name == NULL) {
1099 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1106 *out_parsed_flags = ex_stats_flags;
1110 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1111 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1112 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1116 char msg[DATA_MAX_NAME_LEN];
1117 const char *state_str = domain_states[state];
1118 #ifdef HAVE_DOM_REASON
1120 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1121 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1125 const char *reason_str = domain_reasons[state][reason];
1126 /* Array size for domain reasons is fixed, but different domain states can
1127 * have different number of reasons. We need to check if reason was
1128 * successfully parsed */
1130 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1135 const char *reason_str = "N/A";
1138 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1143 case VIR_DOMAIN_NOSTATE:
1144 case VIR_DOMAIN_RUNNING:
1145 case VIR_DOMAIN_SHUTDOWN:
1146 case VIR_DOMAIN_SHUTOFF:
1147 severity = NOTIF_OKAY;
1149 case VIR_DOMAIN_BLOCKED:
1150 case VIR_DOMAIN_PAUSED:
1151 #ifdef DOM_STATE_PMSUSPENDED
1152 case VIR_DOMAIN_PMSUSPENDED:
1154 severity = NOTIF_WARNING;
1156 case VIR_DOMAIN_CRASHED:
1157 severity = NOTIF_FAILURE;
1160 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1163 submit_notif(dom, severity, msg, "domain_state", NULL);
1166 static int lv_init_ignorelists() {
1167 if (il_domains == NULL)
1168 il_domains = ignorelist_create(1);
1169 if (il_block_devices == NULL)
1170 il_block_devices = ignorelist_create(1);
1171 if (il_interface_devices == NULL)
1172 il_interface_devices = ignorelist_create(1);
1174 if (!il_domains || !il_block_devices || !il_interface_devices)
1180 /* Validates config option that may take multiple strings arguments.
1181 * Returns 0 on success, -1 otherwise */
1182 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1184 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1188 if (ci->values_num < 1) {
1190 " plugin: the '%s' option requires at least one string argument",
1195 for (int i = 0; i < ci->values_num; ++i) {
1196 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1198 " plugin: one of the '%s' options is not a valid string",
1207 static int lv_config(oconfig_item_t *ci) {
1208 if (lv_init_ignorelists() != 0) {
1209 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1213 for (int i = 0; i < ci->children_num; ++i) {
1214 oconfig_item_t *c = ci->children + i;
1216 if (strcasecmp(c->key, "Connection") == 0) {
1217 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1221 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1222 if (cf_util_get_int(c, &interval) != 0)
1226 } else if (strcasecmp(c->key, "Domain") == 0) {
1227 char *domain_name = NULL;
1228 if (cf_util_get_string(c, &domain_name) != 0)
1231 if (ignorelist_add(il_domains, domain_name)) {
1232 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1240 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1241 char *device_name = NULL;
1242 if (cf_util_get_string(c, &device_name) != 0)
1245 if (ignorelist_add(il_block_devices, device_name) != 0) {
1247 " plugin: Adding '%s' to block-device-ignorelist failed",
1255 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1256 char *device_format = NULL;
1257 if (cf_util_get_string(c, &device_format) != 0)
1260 if (strcasecmp(device_format, "target") == 0)
1261 blockdevice_format = target;
1262 else if (strcasecmp(device_format, "source") == 0)
1263 blockdevice_format = source;
1265 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1267 sfree(device_format);
1271 sfree(device_format);
1273 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1274 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1278 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1279 char *interface_name = NULL;
1280 if (cf_util_get_string(c, &interface_name) != 0)
1283 if (ignorelist_add(il_interface_devices, interface_name)) {
1284 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1286 sfree(interface_name);
1290 sfree(interface_name);
1292 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1293 bool ignore_selected = false;
1294 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1297 if (ignore_selected) {
1298 ignorelist_set_invert(il_domains, 0);
1299 ignorelist_set_invert(il_block_devices, 0);
1300 ignorelist_set_invert(il_interface_devices, 0);
1302 ignorelist_set_invert(il_domains, 1);
1303 ignorelist_set_invert(il_block_devices, 1);
1304 ignorelist_set_invert(il_interface_devices, 1);
1308 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1309 if (cf_util_get_string(c, &hm_ns) != 0)
1313 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1314 if (cf_util_get_string(c, &hm_xpath) != 0)
1318 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1319 /* this option can take multiple strings arguments in one config line*/
1320 if (check_config_multiple_string_entry(c) != 0) {
1321 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1325 const int params_num = c->values_num;
1326 for (int i = 0; i < params_num; ++i) {
1327 const char *param_name = c->values[i].value.string;
1328 if (strcasecmp(param_name, "hostname") == 0)
1329 hostname_format[i] = hf_hostname;
1330 else if (strcasecmp(param_name, "name") == 0)
1331 hostname_format[i] = hf_name;
1332 else if (strcasecmp(param_name, "uuid") == 0)
1333 hostname_format[i] = hf_uuid;
1334 else if (strcasecmp(param_name, "metadata") == 0)
1335 hostname_format[i] = hf_metadata;
1337 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1343 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1344 hostname_format[i] = hf_none;
1347 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1348 /* this option can handle list of string parameters in one line*/
1349 if (check_config_multiple_string_entry(c) != 0) {
1351 " plugin: Could not get 'PluginInstanceFormat' parameter");
1355 const int params_num = c->values_num;
1356 for (int i = 0; i < params_num; ++i) {
1357 const char *param_name = c->values[i].value.string;
1358 if (strcasecmp(param_name, "none") == 0) {
1359 plugin_instance_format[i] = plginst_none;
1361 } else if (strcasecmp(param_name, "name") == 0)
1362 plugin_instance_format[i] = plginst_name;
1363 else if (strcasecmp(param_name, "uuid") == 0)
1364 plugin_instance_format[i] = plginst_uuid;
1365 else if (strcasecmp(param_name, "metadata") == 0)
1366 plugin_instance_format[i] = plginst_metadata;
1368 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1375 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1376 plugin_instance_format[i] = plginst_none;
1379 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1380 char *format = NULL;
1381 if (cf_util_get_string(c, &format) != 0)
1384 if (strcasecmp(format, "name") == 0)
1385 interface_format = if_name;
1386 else if (strcasecmp(format, "address") == 0)
1387 interface_format = if_address;
1388 else if (strcasecmp(format, "number") == 0)
1389 interface_format = if_number;
1391 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1398 } else if (strcasecmp(c->key, "Instances") == 0) {
1399 if (cf_util_get_int(c, &nr_instances) != 0)
1402 if (nr_instances <= 0) {
1403 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1406 if (nr_instances > NR_INSTANCES_MAX) {
1407 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1408 " use a lower setting or recompile the plugin.",
1409 nr_instances, NR_INSTANCES_MAX);
1413 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1415 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1416 char *ex_str = NULL;
1418 if (cf_util_get_string(c, &ex_str) != 0)
1421 char *exstats[EX_STATS_MAX_FIELDS];
1422 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1423 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1426 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1430 #ifdef HAVE_JOB_STATS
1431 if ((extra_stats & ex_stats_job_stats_completed) &&
1432 (extra_stats & ex_stats_job_stats_background)) {
1433 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1434 "type of job statistics can be collected at the same "
1440 /* ExtraStats parsed successfully */
1442 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1443 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1447 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1448 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1452 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1453 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1458 /* Unrecognised option. */
1459 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1467 static int lv_connect(void) {
1469 /* event implementation must be registered before connection is opened */
1470 if (!persistent_notification)
1471 if (register_event_impl() != 0)
1474 /* `conn_string == NULL' is acceptable */
1476 /* virDomainGetFSInfo requires full read-write access connection */
1477 if (extra_stats & ex_stats_fs_info)
1478 conn = virConnectOpen(conn_string);
1481 conn = virConnectOpenReadOnly(conn_string);
1483 c_complain(LOG_ERR, &conn_complain,
1484 PLUGIN_NAME " plugin: Unable to connect: "
1485 "virConnectOpen failed.");
1488 int status = virNodeGetInfo(conn, &nodeinfo);
1490 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1491 virConnectClose(conn);
1496 if (!persistent_notification)
1497 if (start_event_loop(¬if_thread) != 0) {
1498 virConnectClose(conn);
1503 c_release(LOG_NOTICE, &conn_complain,
1504 PLUGIN_NAME " plugin: Connection established.");
1508 static void lv_disconnect(void) {
1510 virConnectClose(conn);
1512 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1515 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1516 struct lv_block_stats *bstats) {
1517 #ifdef HAVE_BLOCK_STATS_FLAGS
1519 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1521 VIRT_ERROR(conn, "getting the disk params count");
1525 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1526 if (params == NULL) {
1527 ERROR(PLUGIN_NAME " plugin: alloc(%i) for block=%s parameters failed.",
1533 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1534 VIRT_ERROR(conn, "getting the disk params values");
1536 rc = get_block_stats(bstats, params, nparams);
1539 virTypedParamsClear(params, nparams);
1543 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1544 #endif /* HAVE_BLOCK_STATS_FLAGS */
1547 #ifdef HAVE_PERF_STATS
1548 static void perf_submit(virDomainStatsRecordPtr stats) {
1549 for (int i = 0; i < stats->nparams; ++i) {
1550 /* Replace '.' with '_' in event field to match other metrics' naming
1552 char *c = strchr(stats->params[i].field, '.');
1555 submit(stats->dom, "perf", stats->params[i].field,
1556 &(value_t){.derive = stats->params[i].value.ul}, 1);
1560 static int get_perf_events(virDomainPtr domain) {
1561 virDomainStatsRecordPtr *stats = NULL;
1562 /* virDomainListGetStats requires a NULL terminated list of domains */
1563 virDomainPtr domain_array[] = {domain, NULL};
1566 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1568 ERROR(PLUGIN_NAME " plugin: virDomainListGetStats failed with status %i.",
1571 virErrorPtr err = virGetLastError();
1572 if (err->code == VIR_ERR_NO_SUPPORT) {
1574 " plugin: Disabled unsupported ExtraStats selector: perf");
1575 extra_stats &= ~(ex_stats_perf);
1581 for (int i = 0; i < status; ++i)
1582 perf_submit(stats[i]);
1584 virDomainStatsRecordListFree(stats);
1587 #endif /* HAVE_PERF_STATS */
1589 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1590 unsigned char *cpu_maps, int cpu_map_len) {
1591 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1592 char type_instance[DATA_MAX_NAME_LEN];
1593 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1595 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1596 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1600 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1601 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1603 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1604 if (vinfo == NULL) {
1605 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1609 int cpu_map_len = 0;
1610 unsigned char *cpumaps = NULL;
1611 if (extra_stats & ex_stats_vcpupin) {
1612 cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1613 cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1615 if (cpumaps == NULL) {
1616 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1623 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1625 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1628 virErrorPtr err = virGetLastError();
1629 if (err->code == VIR_ERR_NO_SUPPORT) {
1630 if (extra_stats & ex_stats_vcpu)
1632 " plugin: Disabled unsupported ExtraStats selector: vcpu");
1633 if (extra_stats & ex_stats_vcpupin)
1635 " plugin: Disabled unsupported ExtraStats selector: vcpupin");
1636 extra_stats &= ~(ex_stats_vcpu | ex_stats_vcpupin);
1644 for (int i = 0; i < nr_virt_cpu; ++i) {
1645 if (extra_stats & ex_stats_vcpu)
1646 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1647 if (extra_stats & ex_stats_vcpupin)
1648 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1656 #ifdef HAVE_CPU_STATS
1657 static int get_pcpu_stats(virDomainPtr dom) {
1658 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1660 VIRT_ERROR(conn, "getting the CPU params count");
1662 virErrorPtr err = virGetLastError();
1663 if (err->code == VIR_ERR_NO_SUPPORT) {
1665 " plugin: Disabled unsupported ExtraStats selector: pcpu");
1666 extra_stats &= ~(ex_stats_pcpu);
1672 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1673 if (param == NULL) {
1674 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1678 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1680 virTypedParamsClear(param, nparams);
1682 VIRT_ERROR(conn, "getting the CPU params values");
1686 unsigned long long total_user_cpu_time = 0;
1687 unsigned long long total_syst_cpu_time = 0;
1689 for (int i = 0; i < nparams; ++i) {
1690 if (!strcmp(param[i].field, "user_time"))
1691 total_user_cpu_time = param[i].value.ul;
1692 else if (!strcmp(param[i].field, "system_time"))
1693 total_syst_cpu_time = param[i].value.ul;
1696 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1697 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1700 virTypedParamsClear(param, nparams);
1705 #endif /* HAVE_CPU_STATS */
1707 #ifdef HAVE_DOM_REASON
1708 static int submit_domain_state(virDomainPtr domain) {
1709 int domain_state = 0;
1710 int domain_reason = 0;
1712 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1714 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1719 value_t values[] = {
1720 {.gauge = (gauge_t)domain_state}, {.gauge = (gauge_t)domain_reason},
1723 submit(domain, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1728 #ifdef HAVE_LIST_ALL_DOMAINS
1729 static int get_domain_state_notify(virDomainPtr domain) {
1730 int domain_state = 0;
1731 int domain_reason = 0;
1733 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1735 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1740 domain_state_submit_notif(domain, domain_state, domain_reason);
1744 #endif /* HAVE_LIST_ALL_DOMAINS */
1745 #endif /* HAVE_DOM_REASON */
1747 static int get_memory_stats(virDomainPtr domain) {
1748 virDomainMemoryStatPtr minfo =
1749 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1750 if (minfo == NULL) {
1751 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1756 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1757 if (mem_stats < 0) {
1758 ERROR(PLUGIN_NAME " plugin: virDomainMemoryStats failed with mem_stats %i.",
1762 virErrorPtr err = virGetLastError();
1763 if (err->code == VIR_ERR_NO_SUPPORT) {
1765 " plugin: Disabled unsupported ExtraStats selector: memory");
1766 extra_stats &= ~(ex_stats_memory);
1772 derive_t swap_in = -1;
1773 derive_t swap_out = -1;
1774 derive_t min_flt = -1;
1775 derive_t maj_flt = -1;
1777 for (int i = 0; i < mem_stats; i++) {
1778 if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN)
1779 swap_in = minfo[i].val;
1780 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT)
1781 swap_out = minfo[i].val;
1782 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT)
1783 min_flt = minfo[i].val;
1784 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT)
1785 maj_flt = minfo[i].val;
1786 #ifdef LIBVIR_CHECK_VERSION
1787 #if LIBVIR_CHECK_VERSION(2, 1, 0)
1788 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE)
1789 /* Skip 'last_update' reporting as that is not memory but timestamp */
1794 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1797 if (swap_in > 0 || swap_out > 0) {
1798 submit(domain, "swap_io", "in", &(value_t){.gauge = swap_in}, 1);
1799 submit(domain, "swap_io", "out", &(value_t){.gauge = swap_out}, 1);
1802 if (min_flt > 0 || maj_flt > 0) {
1803 value_t values[] = {
1804 {.gauge = (gauge_t)min_flt}, {.gauge = (gauge_t)maj_flt},
1806 submit(domain, "ps_pagefaults", NULL, values, STATIC_ARRAY_SIZE(values));
1813 #ifdef HAVE_DISK_ERR
1814 static void disk_err_submit(virDomainPtr domain,
1815 virDomainDiskErrorPtr disk_err) {
1816 submit(domain, "disk_error", disk_err->disk,
1817 &(value_t){.gauge = disk_err->error}, 1);
1820 static int get_disk_err(virDomainPtr domain) {
1821 /* Get preferred size of disk errors array */
1822 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1823 if (disk_err_count == -1) {
1825 " plugin: failed to get preferred size of disk errors array");
1827 virErrorPtr err = virGetLastError();
1829 if (err->code == VIR_ERR_NO_SUPPORT) {
1831 " plugin: Disabled unsupported ExtraStats selector: disk_err");
1832 extra_stats &= ~(ex_stats_disk_err);
1839 " plugin: preferred size of disk errors array: %d for domain %s",
1840 disk_err_count, virDomainGetName(domain));
1841 virDomainDiskError disk_err[disk_err_count];
1843 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1844 if (disk_err_count == -1) {
1845 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1850 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1851 disk_err_count, virDomainGetName(domain));
1853 for (int i = 0; i < disk_err_count; ++i) {
1854 disk_err_submit(domain, &disk_err[i]);
1855 sfree(disk_err[i].disk);
1860 #endif /* HAVE_DISK_ERR */
1862 static int get_block_device_stats(struct block_device *block_dev) {
1864 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1868 virDomainBlockInfo binfo;
1869 init_block_info(&binfo);
1871 /* Fetching block info stats only if needed*/
1872 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1873 ex_stats_disk_physical)) {
1874 /* Block info statistics can be only fetched from devices with 'source'
1876 if (block_dev->has_source) {
1877 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1879 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1882 virErrorPtr err = virGetLastError();
1883 if (err->code == VIR_ERR_NO_SUPPORT) {
1885 if (extra_stats & ex_stats_disk_allocation)
1886 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
1887 "selector: disk_allocation");
1888 if (extra_stats & ex_stats_disk_capacity)
1889 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
1890 "selector: disk_capacity");
1891 if (extra_stats & ex_stats_disk_physical)
1892 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
1893 "selector: disk_physical");
1895 extra_stats &= ~(ex_stats_disk_allocation | ex_stats_disk_capacity |
1896 ex_stats_disk_physical);
1904 struct lv_block_stats bstats;
1905 init_block_stats(&bstats);
1907 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1908 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1912 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1918 #define NM_ADD_ITEM(_fun, _name, _val) \
1920 ret = _fun(¬if, _name, _val); \
1922 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1927 #define NM_ADD_STR_ITEMS(_items, _size) \
1929 for (size_t _i = 0; _i < _size; ++_i) { \
1931 " plugin: Adding notification metadata name=%s value=%s", \
1932 _items[_i].name, _items[_i].value); \
1933 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1934 _items[_i].value); \
1938 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1939 notification_t notif;
1942 /* Local struct, just for the purpose of this function. */
1943 typedef struct nm_str_item_s {
1948 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1949 nm_str_item_t fs_str_items[] = {
1950 {.name = "mountpoint", .value = fs_info->mountpoint},
1951 {.name = "name", .value = fs_info->name},
1952 {.name = "fstype", .value = fs_info->fstype}};
1954 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1955 fs_dev_alias[i].name = "devAlias";
1956 fs_dev_alias[i].value = fs_info->devAlias[i];
1959 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1960 "file_system", NULL);
1961 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1962 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1963 fs_info->ndevAlias);
1964 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1966 plugin_dispatch_notification(¬if);
1970 plugin_notification_meta_free(notif.meta);
1974 #undef RETURN_ON_ERR
1975 #undef NM_ADD_STR_ITEMS
1977 static int get_fs_info(virDomainPtr domain) {
1978 virDomainFSInfoPtr *fs_info = NULL;
1981 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1982 if (mount_points_cnt == -1) {
1983 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1986 virErrorPtr err = virGetLastError();
1987 if (err->code == VIR_ERR_NO_SUPPORT) {
1989 " plugin: Disabled unsupported ExtraStats selector: fs_info");
1990 extra_stats &= ~(ex_stats_fs_info);
1996 for (int i = 0; i < mount_points_cnt; ++i) {
1997 if (fs_info_notify(domain, fs_info[i]) != 0) {
1998 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1999 "for mount point %s",
2000 fs_info[i]->mountpoint);
2003 virDomainFSInfoFree(fs_info[i]);
2010 #endif /* HAVE_FS_INFO */
2012 #ifdef HAVE_JOB_STATS
2013 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
2016 if (param->type == VIR_TYPED_PARAM_INT)
2017 vl.derive = param->value.i;
2018 else if (param->type == VIR_TYPED_PARAM_UINT)
2019 vl.derive = param->value.ui;
2020 else if (param->type == VIR_TYPED_PARAM_LLONG)
2021 vl.derive = param->value.l;
2022 else if (param->type == VIR_TYPED_PARAM_ULLONG)
2023 vl.derive = param->value.ul;
2024 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
2025 vl.derive = param->value.d;
2026 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
2027 vl.derive = param->value.b;
2028 else if (param->type == VIR_TYPED_PARAM_STRING) {
2029 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
2032 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
2036 submit(domain, "job_stats", param->field, &vl, 1);
2039 static int get_job_stats(virDomainPtr domain) {
2042 virTypedParameterPtr params = NULL;
2043 int flags = (extra_stats & ex_stats_job_stats_completed)
2044 ? VIR_DOMAIN_JOB_STATS_COMPLETED
2047 int ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
2049 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
2051 virErrorPtr err = virGetLastError();
2052 // VIR_ERR_INVALID_ARG returned when VIR_DOMAIN_JOB_STATS_COMPLETED flag is
2053 // not supported by driver
2054 if (err->code == VIR_ERR_NO_SUPPORT || err->code == VIR_ERR_INVALID_ARG) {
2055 if (extra_stats & ex_stats_job_stats_completed)
2056 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: "
2057 "job_stats_completed");
2058 if (extra_stats & ex_stats_job_stats_background)
2059 ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: "
2060 "job_stats_background");
2062 ~(ex_stats_job_stats_completed | ex_stats_job_stats_background);
2067 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
2069 for (int i = 0; i < nparams; ++i) {
2070 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
2072 job_stats_submit(domain, ¶ms[i]);
2075 virTypedParamsFree(params, nparams);
2078 #endif /* HAVE_JOB_STATS */
2080 static int get_domain_metrics(domain_t *domain) {
2081 if (!domain || !domain->ptr) {
2082 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
2087 int status = virDomainGetInfo(domain->ptr, &info);
2089 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2094 if (extra_stats & ex_stats_domain_state) {
2095 #ifdef HAVE_DOM_REASON
2096 /* At this point we already know domain's state from virDomainGetInfo call,
2097 * however it doesn't provide a reason for entering particular state.
2098 * We need to get it from virDomainGetState.
2100 GET_STATS(submit_domain_state, "domain reason", domain->ptr);
2104 /* Gather remaining stats only for running domains */
2105 if (info.state != VIR_DOMAIN_RUNNING)
2108 #ifdef HAVE_CPU_STATS
2109 if (extra_stats & ex_stats_pcpu)
2110 get_pcpu_stats(domain->ptr);
2113 cpu_submit(domain, info.cpuTime);
2115 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
2117 if (extra_stats & (ex_stats_vcpu | ex_stats_vcpupin))
2118 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
2119 if (extra_stats & ex_stats_memory)
2120 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
2122 #ifdef HAVE_PERF_STATS
2123 if (extra_stats & ex_stats_perf)
2124 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
2128 if (extra_stats & ex_stats_fs_info)
2129 GET_STATS(get_fs_info, "file system info", domain->ptr);
2132 #ifdef HAVE_DISK_ERR
2133 if (extra_stats & ex_stats_disk_err)
2134 GET_STATS(get_disk_err, "disk errors", domain->ptr);
2137 #ifdef HAVE_JOB_STATS
2139 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
2140 GET_STATS(get_job_stats, "job stats", domain->ptr);
2143 /* Update cached virDomainInfo. It has to be done after cpu_submit */
2144 memcpy(&domain->info, &info, sizeof(domain->info));
2149 static int get_if_dev_stats(struct interface_device *if_dev) {
2150 virDomainInterfaceStatsStruct stats = {0};
2151 char *display_name = NULL;
2154 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
2158 switch (interface_format) {
2160 display_name = if_dev->address;
2163 display_name = if_dev->number;
2167 display_name = if_dev->path;
2170 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2171 sizeof(stats)) != 0) {
2172 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2176 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2177 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2178 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2180 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2181 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2182 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2184 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2185 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2186 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2188 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2189 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2190 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2194 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2195 virDomainPtr dom, int event, int detail,
2196 __attribute__((unused)) void *opaque) {
2197 int domain_state = map_domain_event_to_state(event);
2198 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2199 #ifdef HAVE_DOM_REASON
2200 domain_reason = map_domain_event_detail_to_reason(event, detail);
2202 domain_state_submit_notif(dom, domain_state, domain_reason);
2207 static void virt_eventloop_timeout_cb(int timer ATTRIBUTE_UNUSED,
2208 void *timer_info) {}
2210 static int register_event_impl(void) {
2211 if (virEventRegisterDefaultImpl() < 0) {
2212 virErrorPtr err = virGetLastError();
2214 " plugin: error while event implementation registering: %s",
2215 err && err->message ? err->message : "Unknown error");
2219 if (virEventAddTimeout(CDTIME_T_TO_MS(plugin_get_interval()),
2220 virt_eventloop_timeout_cb, NULL, NULL) < 0) {
2221 virErrorPtr err = virGetLastError();
2222 ERROR(PLUGIN_NAME " plugin: virEventAddTimeout failed: %s",
2223 err && err->message ? err->message : "Unknown error");
2230 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2231 const bool active) {
2232 assert(thread_data != NULL);
2233 pthread_mutex_lock(&thread_data->active_mutex);
2234 thread_data->is_active = active;
2235 pthread_mutex_unlock(&thread_data->active_mutex);
2238 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2239 bool active = false;
2241 assert(thread_data != NULL);
2242 pthread_mutex_lock(&thread_data->active_mutex);
2243 active = thread_data->is_active;
2244 pthread_mutex_unlock(&thread_data->active_mutex);
2249 /* worker function running default event implementation */
2250 static void *event_loop_worker(void *arg) {
2251 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2253 while (virt_notif_thread_is_active(thread_data)) {
2254 if (virEventRunDefaultImpl() < 0) {
2255 virErrorPtr err = virGetLastError();
2256 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2257 err && err->message ? err->message : "Unknown error");
2264 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2265 assert(thread_data != NULL);
2267 int ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2269 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2274 * '0' and positive integers are meaningful ID's, therefore setting
2275 * domain_event_cb_id to '-1'
2277 thread_data->domain_event_cb_id = -1;
2278 pthread_mutex_lock(&thread_data->active_mutex);
2279 thread_data->is_active = false;
2280 pthread_mutex_unlock(&thread_data->active_mutex);
2285 /* register domain event callback and start event loop thread */
2286 static int start_event_loop(virt_notif_thread_t *thread_data) {
2287 assert(thread_data != NULL);
2288 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2289 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2290 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2291 if (thread_data->domain_event_cb_id == -1) {
2292 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2296 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2298 virt_notif_thread_set_active(thread_data, 1);
2299 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2301 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2302 virt_notif_thread_set_active(thread_data, 0);
2303 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2304 thread_data->domain_event_cb_id = -1;
2311 /* stop event loop thread and deregister callback */
2312 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2314 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2317 if (virt_notif_thread_is_active(thread_data)) {
2318 virt_notif_thread_set_active(thread_data, 0);
2319 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2320 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2323 /* ... and de-registering event handler */
2324 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2325 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2326 thread_data->domain_event_cb_id = -1;
2330 static int persistent_domains_state_notification(void) {
2333 #ifdef HAVE_LIST_ALL_DOMAINS
2334 virDomainPtr *domains = NULL;
2335 n = virConnectListAllDomains(conn, &domains,
2336 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2338 VIRT_ERROR(conn, "reading list of persistent domains");
2341 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2342 /* Fetch each persistent domain's state and notify it */
2344 for (int i = 0; i < n; ++i) {
2345 status = get_domain_state_notify(domains[i]);
2348 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2349 virDomainGetName(domains[i]));
2351 virDomainFree(domains[i]);
2355 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2359 n = virConnectNumOfDomains(conn);
2362 /* Get list of domains. */
2363 domids = calloc(n, sizeof(*domids));
2364 if (domids == NULL) {
2365 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2368 n = virConnectListDomains(conn, domids, n);
2370 VIRT_ERROR(conn, "reading list of domains");
2374 /* Fetch info of each active domain and notify it */
2375 for (int i = 0; i < n; ++i) {
2377 virDomainPtr dom = NULL;
2378 dom = virDomainLookupByID(conn, domids[i]);
2380 VIRT_ERROR(conn, "virDomainLookupByID");
2381 /* Could be that the domain went away -- ignore it anyway. */
2384 status = virDomainGetInfo(dom, &info);
2386 /* virDomainGetState is not available. Submit 0, which corresponds to
2387 * unknown reason. */
2388 domain_state_submit_notif(dom, info.state, 0);
2390 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2402 static int lv_read(user_data_t *ud) {
2403 if (ud->data == NULL) {
2404 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2408 struct lv_read_instance *inst = ud->data;
2409 struct lv_read_state *state = &inst->read_state;
2412 if (lv_connect() < 0)
2415 /* Wait until inst#0 establish connection */
2417 DEBUG(PLUGIN_NAME " plugin#%s: Wait until inst#0 establish connection",
2422 int ret = virConnectIsAlive(conn);
2423 if (ret == 0) { /* Connection lost */
2424 if (inst->id == 0) {
2425 c_complain(LOG_ERR, &conn_complain,
2426 PLUGIN_NAME " plugin: Lost connection.");
2428 if (!persistent_notification)
2429 stop_event_loop(¬if_thread);
2440 /* Need to refresh domain or device lists? */
2441 if ((last_refresh == (time_t)0) ||
2442 ((interval > 0) && ((last_refresh + interval) <= t))) {
2443 if (refresh_lists(inst) != 0) {
2444 if (inst->id == 0) {
2445 if (!persistent_notification)
2446 stop_event_loop(¬if_thread);
2454 /* persistent domains state notifications are handled by instance 0 */
2455 if (inst->id == 0 && persistent_notification) {
2456 int status = persistent_domains_state_notification();
2458 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2459 "returned with status %i",
2464 for (int i = 0; i < state->nr_domains; ++i)
2465 DEBUG(PLUGIN_NAME " plugin: domain %s",
2466 virDomainGetName(state->domains[i].ptr));
2467 for (int i = 0; i < state->nr_block_devices; ++i)
2468 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2469 virDomainGetName(state->block_devices[i].dom),
2470 state->block_devices[i].path);
2471 for (int i = 0; i < state->nr_interface_devices; ++i)
2472 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2473 virDomainGetName(state->interface_devices[i].dom),
2474 state->interface_devices[i].path);
2477 /* Get domains' metrics */
2478 for (int i = 0; i < state->nr_domains; ++i) {
2479 domain_t *dom = &state->domains[i];
2482 status = get_domain_metrics(dom);
2483 #ifdef HAVE_DOM_REASON
2484 else if (extra_stats & ex_stats_domain_state)
2485 status = submit_domain_state(dom->ptr);
2489 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2490 virDomainGetName(dom->ptr));
2493 /* Get block device stats for each domain. */
2494 for (int i = 0; i < state->nr_block_devices; ++i) {
2495 int status = get_block_device_stats(&state->block_devices[i]);
2498 " plugin: failed to get stats for block device (%s) in domain %s",
2499 state->block_devices[i].path,
2500 virDomainGetName(state->block_devices[i].dom));
2503 /* Get interface stats for each domain. */
2504 for (int i = 0; i < state->nr_interface_devices; ++i) {
2505 int status = get_if_dev_stats(&state->interface_devices[i]);
2509 " plugin: failed to get interface stats for device (%s) in domain %s",
2510 state->interface_devices[i].path,
2511 virDomainGetName(state->interface_devices[i].dom));
2517 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2518 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2519 struct lv_read_instance *inst = &(lv_ud->inst);
2521 memset(lv_ud, 0, sizeof(*lv_ud));
2523 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2526 user_data_t *ud = &(lv_ud->ud);
2528 ud->free_func = NULL;
2530 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2532 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2535 static void lv_clean_read_state(struct lv_read_state *state) {
2536 free_block_devices(state);
2537 free_interface_devices(state);
2538 free_domains(state);
2541 static void lv_fini_instance(size_t i) {
2542 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2543 struct lv_read_state *state = &(inst->read_state);
2545 lv_clean_read_state(state);
2547 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2550 static int lv_init(void) {
2551 if (virInitialize() != 0)
2554 /* Init ignorelists if there was no explicit configuration */
2555 if (lv_init_ignorelists() != 0)
2558 if (!persistent_notification)
2559 if (virt_notif_thread_init(¬if_thread) != 0)
2564 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2566 for (int i = 0; i < nr_instances; ++i)
2567 if (lv_init_instance(i, lv_read) != 0)
2574 * returns 0 on success and <0 on error
2576 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2578 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2579 xmlXPathObjectPtr xpath_obj = NULL;
2580 xmlNodePtr xml_node = NULL;
2584 err = xmlXPathRegisterNs(xpath_ctx,
2585 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2586 (const xmlChar *)METADATA_VM_PARTITION_URI);
2588 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2589 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2593 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2594 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2595 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2596 if (xpath_obj == NULL) {
2597 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2598 xpath_str, dom_name);
2602 if (xpath_obj->type != XPATH_NODESET) {
2603 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2604 "(wanted %d) on domain %s",
2605 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2610 * from now on there is no real error, it's ok if a domain
2611 * doesn't have the metadata partition tag.
2614 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2615 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2616 "expected=1 on domain %s",
2618 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2621 xml_node = xpath_obj->nodesetval->nodeTab[0];
2622 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2626 /* deregister to clean up */
2627 err = xmlXPathRegisterNs(xpath_ctx,
2628 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2630 /* we can't really recover here */
2632 " plugin: deregistration of namespace %s failed for domain %s",
2633 METADATA_VM_PARTITION_PREFIX, dom_name);
2636 xmlXPathFreeObject(xpath_obj);
2641 static int is_known_tag(const char *dom_tag) {
2642 for (int i = 0; i < nr_instances; ++i)
2643 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2648 static int lv_instance_include_domain(struct lv_read_instance *inst,
2649 const char *dom_name,
2650 const char *dom_tag) {
2651 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2654 /* instance#0 will always be there, so it is in charge of extra duties */
2655 if (inst->id == 0) {
2656 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2657 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2658 "with unknown tag '%s'",
2659 inst->tag, dom_name, dom_tag);
2667 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2668 const char *domname,
2669 xmlXPathContextPtr xpath_ctx) {
2670 xmlXPathObjectPtr xpath_obj =
2671 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2673 if (xpath_obj == NULL) {
2674 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2679 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2680 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2684 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2685 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2686 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2687 char *path_str = NULL;
2688 char *source_str = NULL;
2693 /* Fetching path and source for block device */
2694 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2695 if (child->type != XML_ELEMENT_NODE)
2698 /* we are interested only in either "target" or "source" elements */
2699 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2700 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2701 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2702 /* name of the source is located in "dev" or "file" element (it depends
2703 * on type of source). Trying "dev" at first*/
2704 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2706 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2708 /* ignoring any other element*/
2711 /* source_str will be interpreted as a device path if blockdevice_format
2712 * param is set to 'source'. */
2713 const char *device_path =
2714 (blockdevice_format == source) ? source_str : path_str;
2717 /* no path found and we can't add block_device without it */
2718 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2719 "domain %s - disk device will be ignored in reports",
2724 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2725 /* we only have to store information whether 'source' exists or not */
2726 bool has_source = (source_str != NULL) ? true : false;
2728 add_block_device(state, dom, device_path, has_source);
2736 xmlFree(source_str);
2740 xmlXPathFreeObject(xpath_obj);
2743 static void lv_add_network_interfaces(struct lv_read_state *state,
2744 virDomainPtr dom, const char *domname,
2745 xmlXPathContextPtr xpath_ctx) {
2746 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2747 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2749 if (xpath_obj == NULL)
2752 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2753 xmlXPathFreeObject(xpath_obj);
2757 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2759 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2761 char *address = NULL;
2762 const int itf_number = j + 1;
2764 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2768 for (xmlNodePtr child = xml_interface->children; child;
2769 child = child->next) {
2770 if (child->type != XML_ELEMENT_NODE)
2773 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2774 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2777 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2778 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2784 bool device_ignored = false;
2785 switch (interface_format) {
2787 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2788 device_ignored = true;
2791 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2792 device_ignored = true;
2795 char number_string[4];
2796 snprintf(number_string, sizeof(number_string), "%d", itf_number);
2797 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2799 device_ignored = true;
2802 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2806 if (!device_ignored)
2807 add_interface_device(state, dom, path, address, itf_number);
2814 xmlXPathFreeObject(xpath_obj);
2817 static bool is_domain_ignored(virDomainPtr dom) {
2818 const char *domname = virDomainGetName(dom);
2820 if (domname == NULL) {
2821 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2825 if (ignorelist_match(il_domains, domname) != 0) {
2827 " plugin: ignoring domain '%s' because of ignorelist option",
2835 static int refresh_lists(struct lv_read_instance *inst) {
2836 struct lv_read_state *state = &inst->read_state;
2839 #ifndef HAVE_LIST_ALL_DOMAINS
2840 n = virConnectNumOfDomains(conn);
2842 VIRT_ERROR(conn, "reading number of domains");
2847 lv_clean_read_state(state);
2849 #ifndef HAVE_LIST_ALL_DOMAINS
2854 #ifdef HAVE_LIST_ALL_DOMAINS
2855 virDomainPtr *domains, *domains_inactive;
2856 int m = virConnectListAllDomains(conn, &domains_inactive,
2857 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2858 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2860 /* Get list of domains. */
2861 int *domids = calloc(n, sizeof(*domids));
2862 if (domids == NULL) {
2863 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2867 n = virConnectListDomains(conn, domids, n);
2871 VIRT_ERROR(conn, "reading list of domains");
2872 #ifndef HAVE_LIST_ALL_DOMAINS
2875 for (int i = 0; i < m; ++i)
2876 virDomainFree(domains_inactive[i]);
2877 sfree(domains_inactive);
2882 #ifdef HAVE_LIST_ALL_DOMAINS
2883 for (int i = 0; i < m; ++i)
2884 if (is_domain_ignored(domains_inactive[i]) ||
2885 add_domain(state, domains_inactive[i], 0) < 0) {
2886 /* domain ignored or failed during adding to domains list*/
2887 virDomainFree(domains_inactive[i]);
2888 domains_inactive[i] = NULL;
2893 /* Fetch each domain and add it to the list, unless ignore. */
2894 for (int i = 0; i < n; ++i) {
2896 #ifdef HAVE_LIST_ALL_DOMAINS
2897 virDomainPtr dom = domains[i];
2899 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2901 VIRT_ERROR(conn, "virDomainLookupByID");
2902 /* Could be that the domain went away -- ignore it anyway. */
2907 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2909 * domain ignored or failed during adding to domains list
2911 * When domain is already tracked, then there is
2912 * no problem with memory handling (will be freed
2913 * with the rest of domains cached data)
2914 * But in case of error like this (error occurred
2915 * before adding domain to track) we have to take
2916 * care it ourselves and call virDomainFree
2922 const char *domname = virDomainGetName(dom);
2923 if (domname == NULL) {
2924 VIRT_ERROR(conn, "virDomainGetName");
2929 int status = virDomainGetInfo(dom, &info);
2931 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2936 if (info.state != VIR_DOMAIN_RUNNING) {
2937 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2941 /* Get a list of devices for this domain. */
2942 xmlDocPtr xml_doc = NULL;
2943 xmlXPathContextPtr xpath_ctx = NULL;
2945 char *xml = virDomainGetXMLDesc(dom, 0);
2947 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2951 /* Yuck, XML. Parse out the devices. */
2952 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2953 if (xml_doc == NULL) {
2954 VIRT_ERROR(conn, "xmlReadDoc");
2958 xpath_ctx = xmlXPathNewContext(xml_doc);
2960 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2961 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2962 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2966 if (!lv_instance_include_domain(inst, domname, tag))
2969 /* Block devices. */
2970 if (report_block_devices)
2971 lv_add_block_devices(state, dom, domname, xpath_ctx);
2973 /* Network interfaces. */
2974 if (report_network_interfaces)
2975 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2979 xmlXPathFreeContext(xpath_ctx);
2981 xmlFreeDoc(xml_doc);
2985 #ifdef HAVE_LIST_ALL_DOMAINS
2986 /* NOTE: domains_active and domains_inactive data will be cleared during
2987 refresh of all domains (inside lv_clean_read_state function) so we need
2988 to free here only allocated arrays */
2990 sfree(domains_inactive);
2997 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2998 " domains=%i block_devices=%i iface_devices=%i",
2999 inst->tag, state->nr_domains, state->nr_block_devices,
3000 state->nr_interface_devices);
3005 static void free_domains(struct lv_read_state *state) {
3006 if (state->domains) {
3007 for (int i = 0; i < state->nr_domains; ++i)
3008 virDomainFree(state->domains[i].ptr);
3009 sfree(state->domains);
3011 state->domains = NULL;
3012 state->nr_domains = 0;
3015 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
3017 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
3019 domain_t *new_ptr = realloc(state->domains, new_size);
3020 if (new_ptr == NULL) {
3021 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
3025 state->domains = new_ptr;
3026 state->domains[state->nr_domains].ptr = dom;
3027 state->domains[state->nr_domains].active = active;
3028 memset(&state->domains[state->nr_domains].info, 0,
3029 sizeof(state->domains[state->nr_domains].info));
3031 return state->nr_domains++;
3034 static void free_block_devices(struct lv_read_state *state) {
3035 if (state->block_devices) {
3036 for (int i = 0; i < state->nr_block_devices; ++i)
3037 sfree(state->block_devices[i].path);
3038 sfree(state->block_devices);
3040 state->block_devices = NULL;
3041 state->nr_block_devices = 0;
3044 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
3045 const char *path, bool has_source) {
3047 char *path_copy = strdup(path);
3052 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
3054 struct block_device *new_ptr = realloc(state->block_devices, new_size);
3055 if (new_ptr == NULL) {
3059 state->block_devices = new_ptr;
3060 state->block_devices[state->nr_block_devices].dom = dom;
3061 state->block_devices[state->nr_block_devices].path = path_copy;
3062 state->block_devices[state->nr_block_devices].has_source = has_source;
3063 return state->nr_block_devices++;
3066 static void free_interface_devices(struct lv_read_state *state) {
3067 if (state->interface_devices) {
3068 for (int i = 0; i < state->nr_interface_devices; ++i) {
3069 sfree(state->interface_devices[i].path);
3070 sfree(state->interface_devices[i].address);
3071 sfree(state->interface_devices[i].number);
3073 sfree(state->interface_devices);
3075 state->interface_devices = NULL;
3076 state->nr_interface_devices = 0;
3079 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
3080 const char *path, const char *address,
3081 unsigned int number) {
3083 if ((path == NULL) || (address == NULL))
3086 char *path_copy = strdup(path);
3090 char *address_copy = strdup(address);
3091 if (!address_copy) {
3096 char number_string[21];
3097 snprintf(number_string, sizeof(number_string), "interface-%u", number);
3098 char *number_copy = strdup(number_string);
3101 sfree(address_copy);
3106 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
3108 struct interface_device *new_ptr =
3109 realloc(state->interface_devices, new_size);
3110 if (new_ptr == NULL) {
3112 sfree(address_copy);
3117 state->interface_devices = new_ptr;
3118 state->interface_devices[state->nr_interface_devices].dom = dom;
3119 state->interface_devices[state->nr_interface_devices].path = path_copy;
3120 state->interface_devices[state->nr_interface_devices].address = address_copy;
3121 state->interface_devices[state->nr_interface_devices].number = number_copy;
3122 return state->nr_interface_devices++;
3125 static int ignore_device_match(ignorelist_t *il, const char *domname,
3126 const char *devpath) {
3127 if ((domname == NULL) || (devpath == NULL))
3130 size_t n = strlen(domname) + strlen(devpath) + 2;
3131 char *name = malloc(n);
3133 ERROR(PLUGIN_NAME " plugin: malloc failed.");
3136 snprintf(name, n, "%s:%s", domname, devpath);
3137 int r = ignorelist_match(il, name);
3142 static int lv_shutdown(void) {
3143 for (int i = 0; i < nr_instances; ++i) {
3144 lv_fini_instance(i);
3147 if (!persistent_notification)
3148 stop_event_loop(¬if_thread);
3152 ignorelist_free(il_domains);
3154 ignorelist_free(il_block_devices);
3155 il_block_devices = NULL;
3156 ignorelist_free(il_interface_devices);
3157 il_interface_devices = NULL;
3162 void module_register(void) {
3163 plugin_register_complex_config("virt", lv_config);
3164 plugin_register_init(PLUGIN_NAME, lv_init);
3165 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);