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>
27 #include "utils_complain.h"
28 #include "utils_ignorelist.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>
39 #define PLUGIN_NAME "virt"
41 /* Secure strcat macro assuring null termination. Parameter (n) is the size of
42 buffer (d), allowing this macro to be safe for static and dynamic buffers */
43 #define SSTRNCAT(d, s, n) \
45 size_t _l = strlen(d); \
46 sstrncpy((d) + _l, (s), (n)-_l); \
49 #ifdef LIBVIR_CHECK_VERSION
51 #if LIBVIR_CHECK_VERSION(0, 9, 2)
52 #define HAVE_DOM_REASON 1
55 #if LIBVIR_CHECK_VERSION(0, 9, 5)
56 #define HAVE_BLOCK_STATS_FLAGS 1
57 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1
60 #if LIBVIR_CHECK_VERSION(0, 9, 10)
61 #define HAVE_DISK_ERR 1
64 #if LIBVIR_CHECK_VERSION(0, 9, 11)
65 #define HAVE_CPU_STATS 1
66 #define HAVE_DOM_STATE_PMSUSPENDED 1
67 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1
71 virConnectListAllDomains() appeared in 0.10.2
72 Note that LIBVIR_CHECK_VERSION appeared a year later, so
73 in some systems which actually have virConnectListAllDomains()
76 #ifdef LIBVIR_CHECK_VERSION
77 #if LIBVIR_CHECK_VERSION(0, 10, 2)
78 #define HAVE_LIST_ALL_DOMAINS 1
82 #if LIBVIR_CHECK_VERSION(1, 0, 1)
83 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
86 #if LIBVIR_CHECK_VERSION(1, 1, 1)
87 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
90 #if LIBVIR_CHECK_VERSION(1, 2, 9)
91 #define HAVE_JOB_STATS 1
94 #if LIBVIR_CHECK_VERSION(1, 2, 10)
95 #define HAVE_DOM_REASON_CRASHED 1
98 #if LIBVIR_CHECK_VERSION(1, 2, 11)
99 #define HAVE_FS_INFO 1
102 #if LIBVIR_CHECK_VERSION(1, 2, 15)
103 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
106 #if LIBVIR_CHECK_VERSION(1, 3, 3)
107 #define HAVE_PERF_STATS 1
108 #define HAVE_DOM_REASON_POSTCOPY 1
111 #endif /* LIBVIR_CHECK_VERSION */
113 static const char *config_keys[] = {"Connection",
120 "BlockDeviceFormatBasename",
127 "PluginInstanceFormat",
131 "PersistentNotification",
134 /* PersistentNotification is false by default */
135 static _Bool persistent_notification = 0;
137 /* libvirt event loop */
138 static pthread_t event_loop_tid;
140 static int domain_event_cb_id;
142 const char *domain_states[] = {
143 [VIR_DOMAIN_NOSTATE] = "no state",
144 [VIR_DOMAIN_RUNNING] = "the domain is running",
145 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
146 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
147 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
148 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
149 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
150 #ifdef HAVE_DOM_STATE_PMSUSPENDED
151 [VIR_DOMAIN_PMSUSPENDED] =
152 "the domain is suspended by guest power management",
156 static int map_domain_event_to_state(int event) {
159 case VIR_DOMAIN_EVENT_STARTED:
160 ret = VIR_DOMAIN_RUNNING;
162 case VIR_DOMAIN_EVENT_SUSPENDED:
163 ret = VIR_DOMAIN_PAUSED;
165 case VIR_DOMAIN_EVENT_RESUMED:
166 ret = VIR_DOMAIN_RUNNING;
168 case VIR_DOMAIN_EVENT_STOPPED:
169 ret = VIR_DOMAIN_SHUTOFF;
171 case VIR_DOMAIN_EVENT_SHUTDOWN:
172 ret = VIR_DOMAIN_SHUTDOWN;
174 case VIR_DOMAIN_EVENT_PMSUSPENDED:
175 ret = VIR_DOMAIN_PMSUSPENDED;
177 case VIR_DOMAIN_EVENT_CRASHED:
178 ret = VIR_DOMAIN_CRASHED;
181 ret = VIR_DOMAIN_NOSTATE;
186 static int map_domain_event_detail_to_reason(int event, int detail) {
189 case VIR_DOMAIN_EVENT_STARTED:
191 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
192 ret = VIR_DOMAIN_RUNNING_BOOTED;
194 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
196 ret = VIR_DOMAIN_RUNNING_MIGRATED;
198 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
199 ret = VIR_DOMAIN_RUNNING_RESTORED;
201 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
202 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
204 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
205 ret = VIR_DOMAIN_RUNNING_WAKEUP;
208 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
211 case VIR_DOMAIN_EVENT_SUSPENDED:
213 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
215 ret = VIR_DOMAIN_PAUSED_USER;
217 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
219 ret = VIR_DOMAIN_PAUSED_MIGRATION;
221 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
223 ret = VIR_DOMAIN_PAUSED_IOERROR;
225 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
227 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
229 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
231 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
233 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
235 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
237 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
239 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
241 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
243 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
245 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
247 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 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
267 running in post-copy mode */
268 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
271 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
274 case VIR_DOMAIN_EVENT_STOPPED:
276 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
277 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
279 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
280 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
282 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
283 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
285 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
286 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
288 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
289 ret = VIR_DOMAIN_SHUTOFF_SAVED;
291 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
292 ret = VIR_DOMAIN_SHUTOFF_FAILED;
294 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
295 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
298 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
301 case VIR_DOMAIN_EVENT_SHUTDOWN:
303 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
305 ret = VIR_DOMAIN_SHUTDOWN_USER;
308 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
311 case VIR_DOMAIN_EVENT_PMSUSPENDED:
313 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
315 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
317 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
318 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
321 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
324 case VIR_DOMAIN_EVENT_CRASHED:
326 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
327 ret = VIR_DOMAIN_CRASHED_PANICKED;
330 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
334 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
339 #ifdef HAVE_DOM_REASON
340 #define DOMAIN_STATE_REASON_MAX_SIZE 20
341 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
342 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
343 "the reason is unknown",
345 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
346 "the reason is unknown",
347 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
348 "normal startup from boot",
349 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
350 "migrated from another host",
351 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
352 "restored from a state file",
353 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
354 "restored from snapshot",
355 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
356 "returned from paused state",
357 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
358 "returned from migration",
359 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
360 "returned from failed save process",
361 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
362 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
363 "returned from pmsuspended due to wakeup event",
365 #ifdef HAVE_DOM_REASON_CRASHED
366 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
367 "resumed from crashed",
369 #ifdef HAVE_DOM_REASON_POSTCOPY
370 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
371 "running in post-copy migration mode",
374 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
375 "the reason is unknown",
377 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
378 "the reason is unknown",
379 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
380 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
381 "paused for offline migration",
382 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
383 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
384 "paused for offline core dump",
385 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
386 "paused due to a disk I/O error",
387 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
388 "paused due to a watchdog event",
389 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
390 "paused after restoring from snapshot",
391 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
393 "paused during shutdown process",
395 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
396 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
397 "paused while creating a snapshot",
399 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
400 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
401 "paused due to a guest crash",
403 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
404 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
405 "the domain is being started",
407 #ifdef HAVE_DOM_REASON_POSTCOPY
408 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
409 "paused for post-copy migration",
410 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
411 "paused after failed post-copy",
414 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
415 "the reason is unknown",
416 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
417 "shutting down on user request",
419 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
420 "the reason is unknown",
421 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
422 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
423 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
424 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
425 "migrated to another host",
426 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
427 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
428 "domain failed to start",
429 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
430 "restored from a snapshot which was taken while domain was shutoff",
432 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
433 "the reason is unknown",
434 #ifdef VIR_DOMAIN_CRASHED_PANICKED
435 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
438 #ifdef HAVE_DOM_STATE_PMSUSPENDED
439 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
440 "the reason is unknown",
443 #endif /* HAVE_DOM_REASON */
445 #define NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
446 #define NANOSEC_IN_SEC 1e9
448 #define GET_STATS(_f, _name, ...) \
450 status = _f(__VA_ARGS__); \
452 ERROR(PLUGIN_NAME ": Failed to get " _name); \
456 static virConnectPtr conn = 0;
457 static char *conn_string = NULL;
458 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
460 /* Node information required for %CPU */
461 static virNodeInfo nodeinfo;
463 /* Seconds between list refreshes, 0 disables completely. */
464 static int interval = 60;
466 /* List of domains, if specified. */
467 static ignorelist_t *il_domains = NULL;
468 /* List of block devices, if specified. */
469 static ignorelist_t *il_block_devices = NULL;
470 /* List of network interface devices, if specified. */
471 static ignorelist_t *il_interface_devices = NULL;
473 static int ignore_device_match(ignorelist_t *, const char *domname,
474 const char *devpath);
476 /* Actual list of block devices found on last refresh. */
477 struct block_device {
478 virDomainPtr dom; /* domain */
479 char *path; /* name of block device */
482 /* Actual list of network interfaces found on last refresh. */
483 struct interface_device {
484 virDomainPtr dom; /* domain */
485 char *path; /* name of interface device */
486 char *address; /* mac address of interface device */
487 char *number; /* interface device number */
490 typedef struct domain_s {
496 struct lv_read_state {
497 /* Actual list of domains found on last refresh. */
501 struct block_device *block_devices;
502 int nr_block_devices;
504 struct interface_device *interface_devices;
505 int nr_interface_devices;
508 static void free_domains(struct lv_read_state *state);
509 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
512 static void free_block_devices(struct lv_read_state *state);
513 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
516 static void free_interface_devices(struct lv_read_state *state);
517 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
518 const char *path, const char *address,
519 unsigned int number);
521 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
522 #define METADATA_VM_PARTITION_ELEMENT "tag"
523 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
525 #define BUFFER_MAX_LEN 256
526 #define PARTITION_TAG_MAX_LEN 32
528 struct lv_read_instance {
529 struct lv_read_state read_state;
530 char tag[PARTITION_TAG_MAX_LEN];
534 struct lv_user_data {
535 struct lv_read_instance inst;
539 #define NR_INSTANCES_DEFAULT 1
540 #define NR_INSTANCES_MAX 128
541 static int nr_instances = NR_INSTANCES_DEFAULT;
542 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
544 /* HostnameFormat. */
545 #define HF_MAX_FIELDS 3
547 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid };
549 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
551 /* PluginInstanceFormat */
552 #define PLGINST_MAX_FIELDS 2
554 enum plginst_field { plginst_none = 0, plginst_name, plginst_uuid };
556 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
559 /* BlockDeviceFormat */
560 enum bd_field { target, source };
562 /* InterfaceFormat. */
563 enum if_field { if_address, if_name, if_number };
566 #define EX_STATS_MAX_FIELDS 15
569 ex_stats_disk = 1 << 0,
570 ex_stats_pcpu = 1 << 1,
571 ex_stats_cpu_util = 1 << 2,
572 ex_stats_domain_state = 1 << 3,
573 #ifdef HAVE_PERF_STATS
574 ex_stats_perf = 1 << 4,
576 ex_stats_vcpupin = 1 << 5,
578 ex_stats_disk_err = 1 << 6,
581 ex_stats_fs_info = 1 << 7,
583 #ifdef HAVE_JOB_STATS
584 ex_stats_job_stats_completed = 1 << 8,
585 ex_stats_job_stats_background = 1 << 9,
589 static unsigned int extra_stats = ex_stats_none;
591 struct ex_stats_item {
595 static const struct ex_stats_item ex_stats_table[] = {
596 {"disk", ex_stats_disk},
597 {"pcpu", ex_stats_pcpu},
598 {"cpu_util", ex_stats_cpu_util},
599 {"domain_state", ex_stats_domain_state},
600 #ifdef HAVE_PERF_STATS
601 {"perf", ex_stats_perf},
603 {"vcpupin", ex_stats_vcpupin},
605 {"disk_err", ex_stats_disk_err},
608 {"fs_info", ex_stats_fs_info},
610 #ifdef HAVE_JOB_STATS
611 {"job_stats_completed", ex_stats_job_stats_completed},
612 {"job_stats_background", ex_stats_job_stats_background},
614 {NULL, ex_stats_none},
617 /* BlockDeviceFormatBasename */
618 _Bool blockdevice_format_basename = 0;
619 static enum bd_field blockdevice_format = target;
620 static enum if_field interface_format = if_name;
622 /* Time that we last refreshed. */
623 static time_t last_refresh = (time_t)0;
625 static int refresh_lists(struct lv_read_instance *inst);
629 unsigned long long total_user_cpu_time;
630 unsigned long long total_syst_cpu_time;
633 struct lv_block_info {
634 virDomainBlockStatsStruct bi;
636 long long rd_total_times;
637 long long wr_total_times;
640 long long fl_total_times;
643 static void init_block_info(struct lv_block_info *binfo) {
647 binfo->bi.rd_req = -1;
648 binfo->bi.wr_req = -1;
649 binfo->bi.rd_bytes = -1;
650 binfo->bi.wr_bytes = -1;
652 binfo->rd_total_times = -1;
653 binfo->wr_total_times = -1;
655 binfo->fl_total_times = -1;
658 #ifdef HAVE_BLOCK_STATS_FLAGS
660 #define GET_BLOCK_INFO_VALUE(NAME, FIELD) \
661 if (!strcmp(param[i].field, NAME)) { \
662 binfo->FIELD = param[i].value.l; \
666 static int get_block_info(struct lv_block_info *binfo,
667 virTypedParameterPtr param, int nparams) {
668 if (binfo == NULL || param == NULL)
671 for (int i = 0; i < nparams; ++i) {
672 /* ignore type. Everything must be LLONG anyway. */
673 GET_BLOCK_INFO_VALUE("rd_operations", bi.rd_req);
674 GET_BLOCK_INFO_VALUE("wr_operations", bi.wr_req);
675 GET_BLOCK_INFO_VALUE("rd_bytes", bi.rd_bytes);
676 GET_BLOCK_INFO_VALUE("wr_bytes", bi.wr_bytes);
677 GET_BLOCK_INFO_VALUE("rd_total_times", rd_total_times);
678 GET_BLOCK_INFO_VALUE("wr_total_times", wr_total_times);
679 GET_BLOCK_INFO_VALUE("flush_operations", fl_req);
680 GET_BLOCK_INFO_VALUE("flush_total_times", fl_total_times);
686 #undef GET_BLOCK_INFO_VALUE
688 #endif /* HAVE_BLOCK_STATS_FLAGS */
690 /* ERROR(...) macro for virterrors. */
691 #define VIRT_ERROR(conn, s) \
694 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
696 ERROR("%s: %s", (s), err->message); \
699 static void init_lv_info(struct lv_info *info) {
701 memset(info, 0, sizeof(*info));
704 static int lv_domain_info(virDomainPtr dom, struct lv_info *info) {
705 #ifdef HAVE_CPU_STATS
706 virTypedParameterPtr param = NULL;
708 #endif /* HAVE_CPU_STATS */
709 int ret = virDomainGetInfo(dom, &(info->di));
714 #ifdef HAVE_CPU_STATS
715 nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
717 VIRT_ERROR(conn, "getting the CPU params count");
721 param = calloc(nparams, sizeof(virTypedParameter));
723 ERROR("virt plugin: alloc(%i) for cpu parameters failed.", nparams);
727 ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
729 virTypedParamsClear(param, nparams);
731 VIRT_ERROR(conn, "getting the disk params values");
735 for (int i = 0; i < nparams; ++i) {
736 if (!strcmp(param[i].field, "user_time"))
737 info->total_user_cpu_time = param[i].value.ul;
738 else if (!strcmp(param[i].field, "system_time"))
739 info->total_syst_cpu_time = param[i].value.ul;
742 virTypedParamsClear(param, nparams);
744 #endif /* HAVE_CPU_STATS */
749 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
751 char uuid[VIR_UUID_STRING_BUFLEN];
753 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
757 /* Construct the hostname field according to HostnameFormat. */
758 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
759 if (hostname_format[i] == hf_none)
763 SSTRNCAT(vl->host, ":", sizeof(vl->host));
765 switch (hostname_format[i]) {
769 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
772 name = virDomainGetName(dom);
774 SSTRNCAT(vl->host, name, sizeof(vl->host));
777 if (virDomainGetUUIDString(dom, uuid) == 0)
778 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
783 /* Construct the plugin instance field according to PluginInstanceFormat. */
784 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
785 if (plugin_instance_format[i] == plginst_none)
789 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
791 switch (plugin_instance_format[i]) {
795 name = virDomainGetName(dom);
797 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
800 if (virDomainGetUUIDString(dom, uuid) == 0)
801 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
806 } /* void init_value_list */
808 static int init_notif(notification_t *notif, const virDomainPtr domain,
809 int severity, const char *msg, const char *type,
810 const char *type_instance) {
811 value_list_t vl = VALUE_LIST_INIT;
814 ERROR(PLUGIN_NAME ": init_notif: NULL pointer");
818 init_value_list(&vl, domain);
819 notification_init(notif, severity, msg, vl.host, vl.plugin,
820 vl.plugin_instance, type, type_instance);
821 notif->time = cdtime();
825 static void submit_notif(const virDomainPtr domain, int severity,
826 const char *msg, const char *type,
827 const char *type_instance) {
828 notification_t notif;
830 init_notif(¬if, domain, severity, msg, type, type_instance);
831 plugin_dispatch_notification(¬if);
833 plugin_notification_meta_free(notif.meta);
836 static void submit(virDomainPtr dom, char const *type,
837 char const *type_instance, value_t *values,
839 value_list_t vl = VALUE_LIST_INIT;
840 init_value_list(&vl, dom);
843 vl.values_len = values_len;
845 sstrncpy(vl.type, type, sizeof(vl.type));
846 if (type_instance != NULL)
847 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
849 plugin_dispatch_values(&vl);
852 static void memory_submit(virDomainPtr dom, gauge_t value) {
853 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
856 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
858 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
859 "minor_fault", "unused", "available",
860 "actual_balloon", "rss", "usable",
863 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
864 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
868 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
871 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
872 virDomainPtr dom, const char *devname) {
874 {.derive = v0}, {.derive = v1},
877 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
878 } /* void submit_derive2 */
880 static void pcpu_submit(virDomainPtr dom, struct lv_info *info) {
881 #ifdef HAVE_CPU_STATS
882 if (extra_stats & ex_stats_pcpu)
883 submit_derive2("ps_cputime", info->total_user_cpu_time,
884 info->total_syst_cpu_time, dom, NULL);
885 #endif /* HAVE_CPU_STATS */
888 static double cpu_ns_to_percent(unsigned int node_cpus,
889 unsigned long long cpu_time_old,
890 unsigned long long cpu_time_new) {
891 double percent = 0.0;
892 unsigned long long cpu_time_diff = 0;
893 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
895 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
896 cpu_time_diff = cpu_time_new - cpu_time_old;
897 percent = ((double)(100 * cpu_time_diff)) /
898 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
901 DEBUG(PLUGIN_NAME ": node_cpus=%u cpu_time_old=%" PRIu64
902 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
903 " time_diff_sec=%f percent=%f",
904 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
905 (uint64_t)cpu_time_diff, time_diff_sec, percent);
910 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
915 if (extra_stats & ex_stats_cpu_util) {
916 /* Computing %CPU requires 2 samples of cpuTime */
917 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
919 submit(dom->ptr, "percent", "virt_cpu_total",
920 &(value_t){.gauge = cpu_ns_to_percent(
921 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
926 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
930 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
932 char type_instance[DATA_MAX_NAME_LEN];
934 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
935 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
938 static void disk_submit(struct lv_block_info *binfo, virDomainPtr dom,
940 char *dev_copy = strdup(dev);
941 const char *type_instance = dev_copy;
946 if (blockdevice_format_basename && blockdevice_format == source)
947 type_instance = basename(dev_copy);
949 if (!type_instance) {
954 char flush_type_instance[DATA_MAX_NAME_LEN];
955 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
958 if ((binfo->bi.rd_req != -1) && (binfo->bi.wr_req != -1))
959 submit_derive2("disk_ops", (derive_t)binfo->bi.rd_req,
960 (derive_t)binfo->bi.wr_req, dom, type_instance);
962 if ((binfo->bi.rd_bytes != -1) && (binfo->bi.wr_bytes != -1))
963 submit_derive2("disk_octets", (derive_t)binfo->bi.rd_bytes,
964 (derive_t)binfo->bi.wr_bytes, dom, type_instance);
966 if (extra_stats & ex_stats_disk) {
967 if ((binfo->rd_total_times != -1) && (binfo->wr_total_times != -1))
968 submit_derive2("disk_time", (derive_t)binfo->rd_total_times,
969 (derive_t)binfo->wr_total_times, dom, type_instance);
971 if (binfo->fl_req != -1)
972 submit(dom, "total_requests", flush_type_instance,
973 &(value_t){.derive = (derive_t)binfo->fl_req}, 1);
974 if (binfo->fl_total_times != -1) {
975 derive_t value = binfo->fl_total_times / 1000; // ns -> ms
976 submit(dom, "total_time_in_ms", flush_type_instance,
977 &(value_t){.derive = value}, 1);
984 static unsigned int parse_ex_stats_flags(char **exstats, int numexstats) {
985 unsigned int ex_stats_flags = ex_stats_none;
986 for (int i = 0; i < numexstats; i++) {
987 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
988 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
989 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
990 ex_stats_table[j].name);
991 ex_stats_flags |= ex_stats_table[j].flag;
995 if (ex_stats_table[j + 1].name == NULL) {
996 ERROR(PLUGIN_NAME ": Unmatched ExtraStats option: %s", exstats[i]);
1000 return ex_stats_flags;
1003 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1004 if ((state < 0) || (state >= STATIC_ARRAY_SIZE(domain_states))) {
1005 ERROR(PLUGIN_NAME ": Array index out of bounds: state=%d", state);
1009 char msg[DATA_MAX_NAME_LEN];
1010 const char *state_str = domain_states[state];
1011 #ifdef HAVE_DOM_REASON
1012 if ((reason < 0) || (reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1013 ERROR(PLUGIN_NAME ": Array index out of bounds: reason=%d", reason);
1017 const char *reason_str = domain_reasons[state][reason];
1018 /* Array size for domain reasons is fixed, but different domain states can
1019 * have different number of reasons. We need to check if reason was
1020 * successfully parsed */
1022 ERROR(PLUGIN_NAME ": Invalid reason (%d) for domain state: %s", reason,
1027 const char *reason_str = "N/A";
1030 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1035 case VIR_DOMAIN_NOSTATE:
1036 case VIR_DOMAIN_RUNNING:
1037 case VIR_DOMAIN_SHUTDOWN:
1038 case VIR_DOMAIN_SHUTOFF:
1039 severity = NOTIF_OKAY;
1041 case VIR_DOMAIN_BLOCKED:
1042 case VIR_DOMAIN_PAUSED:
1043 #ifdef DOM_STATE_PMSUSPENDED
1044 case VIR_DOMAIN_PMSUSPENDED:
1046 severity = NOTIF_WARNING;
1048 case VIR_DOMAIN_CRASHED:
1049 severity = NOTIF_FAILURE;
1052 ERROR(PLUGIN_NAME ": Unrecognized domain state (%d)", state);
1055 submit_notif(dom, severity, msg, "domain_state", NULL);
1058 static int lv_config(const char *key, const char *value) {
1059 if (virInitialize() != 0)
1062 if (il_domains == NULL)
1063 il_domains = ignorelist_create(1);
1064 if (il_block_devices == NULL)
1065 il_block_devices = ignorelist_create(1);
1066 if (il_interface_devices == NULL)
1067 il_interface_devices = ignorelist_create(1);
1069 if (strcasecmp(key, "Connection") == 0) {
1070 char *tmp = strdup(value);
1072 ERROR(PLUGIN_NAME " plugin: Connection strdup failed.");
1080 if (strcasecmp(key, "RefreshInterval") == 0) {
1082 interval = strtol(value, &eptr, 10);
1083 if (eptr == NULL || *eptr != '\0')
1088 if (strcasecmp(key, "Domain") == 0) {
1089 if (ignorelist_add(il_domains, value))
1093 if (strcasecmp(key, "BlockDevice") == 0) {
1094 if (ignorelist_add(il_block_devices, value))
1099 if (strcasecmp(key, "BlockDeviceFormat") == 0) {
1100 if (strcasecmp(value, "target") == 0)
1101 blockdevice_format = target;
1102 else if (strcasecmp(value, "source") == 0)
1103 blockdevice_format = source;
1105 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s", value);
1110 if (strcasecmp(key, "BlockDeviceFormatBasename") == 0) {
1111 blockdevice_format_basename = IS_TRUE(value);
1114 if (strcasecmp(key, "InterfaceDevice") == 0) {
1115 if (ignorelist_add(il_interface_devices, value))
1120 if (strcasecmp(key, "IgnoreSelected") == 0) {
1121 if (IS_TRUE(value)) {
1122 ignorelist_set_invert(il_domains, 0);
1123 ignorelist_set_invert(il_block_devices, 0);
1124 ignorelist_set_invert(il_interface_devices, 0);
1126 ignorelist_set_invert(il_domains, 1);
1127 ignorelist_set_invert(il_block_devices, 1);
1128 ignorelist_set_invert(il_interface_devices, 1);
1133 if (strcasecmp(key, "HostnameFormat") == 0) {
1135 char *fields[HF_MAX_FIELDS];
1138 value_copy = strdup(value);
1139 if (value_copy == NULL) {
1140 ERROR(PLUGIN_NAME " plugin: strdup failed.");
1144 n = strsplit(value_copy, fields, HF_MAX_FIELDS);
1147 ERROR(PLUGIN_NAME " plugin: HostnameFormat: no fields");
1151 for (int i = 0; i < n; ++i) {
1152 if (strcasecmp(fields[i], "hostname") == 0)
1153 hostname_format[i] = hf_hostname;
1154 else if (strcasecmp(fields[i], "name") == 0)
1155 hostname_format[i] = hf_name;
1156 else if (strcasecmp(fields[i], "uuid") == 0)
1157 hostname_format[i] = hf_uuid;
1159 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1167 for (int i = n; i < HF_MAX_FIELDS; ++i)
1168 hostname_format[i] = hf_none;
1173 if (strcasecmp(key, "PluginInstanceFormat") == 0) {
1175 char *fields[PLGINST_MAX_FIELDS];
1178 value_copy = strdup(value);
1179 if (value_copy == NULL) {
1180 ERROR(PLUGIN_NAME " plugin: strdup failed.");
1184 n = strsplit(value_copy, fields, PLGINST_MAX_FIELDS);
1187 ERROR(PLUGIN_NAME " plugin: PluginInstanceFormat: no fields");
1191 for (int i = 0; i < n; ++i) {
1192 if (strcasecmp(fields[i], "none") == 0) {
1193 plugin_instance_format[i] = plginst_none;
1195 } else if (strcasecmp(fields[i], "name") == 0)
1196 plugin_instance_format[i] = plginst_name;
1197 else if (strcasecmp(fields[i], "uuid") == 0)
1198 plugin_instance_format[i] = plginst_uuid;
1200 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1208 for (int i = n; i < PLGINST_MAX_FIELDS; ++i)
1209 plugin_instance_format[i] = plginst_none;
1214 if (strcasecmp(key, "InterfaceFormat") == 0) {
1215 if (strcasecmp(value, "name") == 0)
1216 interface_format = if_name;
1217 else if (strcasecmp(value, "address") == 0)
1218 interface_format = if_address;
1219 else if (strcasecmp(value, "number") == 0)
1220 interface_format = if_number;
1222 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", value);
1228 if (strcasecmp(key, "Instances") == 0) {
1230 double val = strtod(value, &eptr);
1232 if (*eptr != '\0') {
1233 ERROR(PLUGIN_NAME " plugin: Invalid value for Instances = '%s'", value);
1237 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1240 if (val > NR_INSTANCES_MAX) {
1241 ERROR(PLUGIN_NAME " plugin: Instances=%f > NR_INSTANCES_MAX=%i"
1242 " use a lower setting or recompile the plugin.",
1243 val, NR_INSTANCES_MAX);
1247 nr_instances = (int)val;
1248 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1252 if (strcasecmp(key, "ExtraStats") == 0) {
1253 char *localvalue = strdup(value);
1254 if (localvalue != NULL) {
1255 char *exstats[EX_STATS_MAX_FIELDS];
1257 strsplit(localvalue, exstats, STATIC_ARRAY_SIZE(exstats));
1258 extra_stats = parse_ex_stats_flags(exstats, numexstats);
1261 #ifdef HAVE_JOB_STATS
1262 if ((extra_stats & ex_stats_job_stats_completed) &&
1263 (extra_stats & ex_stats_job_stats_background)) {
1264 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1265 "type of job statistics can be collected at the same "
1273 if (strcasecmp(key, "PersistentNotification") == 0) {
1274 persistent_notification = IS_TRUE(value);
1278 /* Unrecognised option. */
1282 static int lv_connect(void) {
1284 /* `conn_string == NULL' is acceptable */
1286 /* virDomainGetFSInfo requires full read-write access connection */
1287 if (extra_stats & ex_stats_fs_info)
1288 conn = virConnectOpen(conn_string);
1291 conn = virConnectOpenReadOnly(conn_string);
1293 c_complain(LOG_ERR, &conn_complain,
1294 PLUGIN_NAME " plugin: Unable to connect: "
1295 "virConnectOpen failed.");
1298 int status = virNodeGetInfo(conn, &nodeinfo);
1300 ERROR(PLUGIN_NAME ": virNodeGetInfo failed");
1304 c_release(LOG_NOTICE, &conn_complain,
1305 PLUGIN_NAME " plugin: Connection established.");
1309 static void lv_disconnect(void) {
1311 virConnectClose(conn);
1313 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1316 static int lv_domain_block_info(virDomainPtr dom, const char *path,
1317 struct lv_block_info *binfo) {
1318 #ifdef HAVE_BLOCK_STATS_FLAGS
1320 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1322 VIRT_ERROR(conn, "getting the disk params count");
1326 virTypedParameterPtr params = calloc((size_t)nparams, sizeof(*params));
1327 if (params == NULL) {
1328 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1334 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1335 VIRT_ERROR(conn, "getting the disk params values");
1337 rc = get_block_info(binfo, params, nparams);
1340 virTypedParamsClear(params, nparams);
1344 return virDomainBlockStats(dom, path, &(binfo->bi), sizeof(binfo->bi));
1345 #endif /* HAVE_BLOCK_STATS_FLAGS */
1348 #ifdef HAVE_PERF_STATS
1349 static void perf_submit(virDomainStatsRecordPtr stats) {
1350 for (int i = 0; i < stats->nparams; ++i) {
1351 /* Replace '.' with '_' in event field to match other metrics' naming
1353 char *c = strchr(stats->params[i].field, '.');
1356 submit(stats->dom, "perf", stats->params[i].field,
1357 &(value_t){.derive = stats->params[i].value.ul}, 1);
1361 static int get_perf_events(virDomainPtr domain) {
1362 virDomainStatsRecordPtr *stats = NULL;
1363 /* virDomainListGetStats requires a NULL terminated list of domains */
1364 virDomainPtr domain_array[] = {domain, NULL};
1367 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1369 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1373 for (int i = 0; i < status; ++i)
1374 perf_submit(stats[i]);
1376 virDomainStatsRecordListFree(stats);
1379 #endif /* HAVE_PERF_STATS */
1381 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1382 unsigned char *cpu_maps, int cpu_map_len) {
1383 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1384 char type_instance[DATA_MAX_NAME_LEN];
1385 _Bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu) ? 1 : 0;
1387 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1388 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1392 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1393 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1394 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1396 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(vinfo[0]));
1397 if (vinfo == NULL) {
1398 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1402 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1403 if (cpumaps == NULL) {
1404 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1410 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1412 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1419 for (int i = 0; i < nr_virt_cpu; ++i) {
1420 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1421 if (extra_stats & ex_stats_vcpupin)
1422 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1430 #ifdef HAVE_DOM_REASON
1432 static void domain_state_submit(virDomainPtr dom, int state, int reason) {
1433 value_t values[] = {
1434 {.gauge = (gauge_t)state}, {.gauge = (gauge_t)reason},
1437 submit(dom, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1440 static int get_domain_state(virDomainPtr domain) {
1441 int domain_state = 0;
1442 int domain_reason = 0;
1444 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1446 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1451 domain_state_submit(domain, domain_state, domain_reason);
1456 #ifdef HAVE_LIST_ALL_DOMAINS
1457 static int get_domain_state_notify(virDomainPtr domain) {
1458 int domain_state = 0;
1459 int domain_reason = 0;
1461 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1463 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1468 if (persistent_notification)
1469 domain_state_submit_notif(domain, domain_state, domain_reason);
1473 #endif /* HAVE_LIST_ALL_DOMAINS */
1474 #endif /* HAVE_DOM_REASON */
1476 static int get_memory_stats(virDomainPtr domain) {
1477 virDomainMemoryStatPtr minfo =
1478 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(virDomainMemoryStatStruct));
1479 if (minfo == NULL) {
1480 ERROR("virt plugin: malloc failed.");
1485 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1486 if (mem_stats < 0) {
1487 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1493 for (int i = 0; i < mem_stats; i++)
1494 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1500 #ifdef HAVE_DISK_ERR
1501 static void disk_err_submit(virDomainPtr domain,
1502 virDomainDiskErrorPtr disk_err) {
1503 submit(domain, "disk_error", disk_err->disk,
1504 &(value_t){.gauge = disk_err->error}, 1);
1507 static int get_disk_err(virDomainPtr domain) {
1508 /* Get preferred size of disk errors array */
1509 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1510 if (disk_err_count == -1) {
1512 " plugin: failed to get preferred size of disk errors array");
1517 " plugin: preferred size of disk errors array: %d for domain %s",
1518 disk_err_count, virDomainGetName(domain));
1519 virDomainDiskError disk_err[disk_err_count];
1521 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1522 if (disk_err_count == -1) {
1523 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1528 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1529 disk_err_count, virDomainGetName(domain));
1531 for (int i = 0; i < disk_err_count; ++i) {
1532 disk_err_submit(domain, &disk_err[i]);
1533 sfree(disk_err[i].disk);
1538 #endif /* HAVE_DISK_ERR */
1540 static int get_block_stats(struct block_device *block_dev) {
1543 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1547 struct lv_block_info binfo;
1548 init_block_info(&binfo);
1550 if (lv_domain_block_info(block_dev->dom, block_dev->path, &binfo) < 0) {
1551 ERROR(PLUGIN_NAME " plugin: lv_domain_block_info failed");
1555 disk_submit(&binfo, block_dev->dom, block_dev->path);
1561 #define NM_ADD_ITEM(_fun, _name, _val) \
1563 ret = _fun(¬if, _name, _val); \
1565 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1570 #define NM_ADD_STR_ITEMS(_items, _size) \
1572 for (int _i = 0; _i < _size; ++_i) { \
1574 " plugin: Adding notification metadata name=%s value=%s", \
1575 _items[_i].name, _items[_i].value); \
1576 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1577 _items[_i].value); \
1581 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1582 notification_t notif;
1585 /* Local struct, just for the purpose of this function. */
1586 typedef struct nm_str_item_s {
1591 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1592 nm_str_item_t fs_str_items[] = {
1593 {.name = "mountpoint", .value = fs_info->mountpoint},
1594 {.name = "name", .value = fs_info->name},
1595 {.name = "fstype", .value = fs_info->fstype}};
1597 for (int i = 0; i < fs_info->ndevAlias; ++i) {
1598 fs_dev_alias[i].name = "devAlias";
1599 fs_dev_alias[i].value = fs_info->devAlias[i];
1602 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1603 "file_system", NULL);
1604 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1605 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1606 fs_info->ndevAlias);
1607 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1609 plugin_dispatch_notification(¬if);
1613 plugin_notification_meta_free(notif.meta);
1617 #undef RETURN_ON_ERR
1618 #undef NM_ADD_STR_ITEMS
1620 static int get_fs_info(virDomainPtr domain) {
1621 virDomainFSInfoPtr *fs_info = NULL;
1624 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1625 if (mount_points_cnt == -1) {
1626 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1628 return mount_points_cnt;
1631 for (int i = 0; i < mount_points_cnt; ++i) {
1632 if (fs_info_notify(domain, fs_info[i]) != 0) {
1633 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1634 "for mount point %s",
1635 fs_info[i]->mountpoint);
1638 virDomainFSInfoFree(fs_info[i]);
1645 #endif /* HAVE_FS_INFO */
1647 #ifdef HAVE_JOB_STATS
1648 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1651 if (param->type == VIR_TYPED_PARAM_INT)
1652 vl.derive = param->value.i;
1653 else if (param->type == VIR_TYPED_PARAM_UINT)
1654 vl.derive = param->value.ui;
1655 else if (param->type == VIR_TYPED_PARAM_LLONG)
1656 vl.derive = param->value.l;
1657 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1658 vl.derive = param->value.ul;
1659 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1660 vl.derive = param->value.d;
1661 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1662 vl.derive = param->value.b;
1663 else if (param->type == VIR_TYPED_PARAM_STRING) {
1664 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1667 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1671 submit(domain, "job_stats", param->field, &vl, 1);
1674 static int get_job_stats(virDomainPtr domain) {
1678 virTypedParameterPtr params = NULL;
1679 int flags = (extra_stats & ex_stats_job_stats_completed)
1680 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1683 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1685 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1689 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1691 for (int i = 0; i < nparams; ++i) {
1692 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1694 job_stats_submit(domain, ¶ms[i]);
1697 virTypedParamsFree(params, nparams);
1700 #endif /* HAVE_JOB_STATS */
1702 static int get_domain_metrics(domain_t *domain) {
1703 struct lv_info info;
1705 if (!domain || !domain->ptr) {
1706 ERROR(PLUGIN_NAME ": get_domain_metrics: NULL pointer");
1710 init_lv_info(&info);
1711 int status = lv_domain_info(domain->ptr, &info);
1713 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1718 if (extra_stats & ex_stats_domain_state) {
1719 #ifdef HAVE_DOM_REASON
1720 /* At this point we already know domain's state from virDomainGetInfo call,
1721 * however it doesn't provide a reason for entering particular state.
1722 * We need to get it from virDomainGetState.
1724 GET_STATS(get_domain_state, "domain reason", domain->ptr);
1728 /* Gather remaining stats only for running domains */
1729 if (info.di.state != VIR_DOMAIN_RUNNING)
1732 pcpu_submit(domain->ptr, &info);
1733 cpu_submit(domain, info.di.cpuTime);
1735 memory_submit(domain->ptr, (gauge_t)info.di.memory * 1024);
1737 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.di.nrVirtCpu);
1738 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
1740 #ifdef HAVE_PERF_STATS
1741 if (extra_stats & ex_stats_perf)
1742 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
1746 if (extra_stats & ex_stats_fs_info)
1747 GET_STATS(get_fs_info, "file system info", domain->ptr);
1750 #ifdef HAVE_DISK_ERR
1751 if (extra_stats & ex_stats_disk_err)
1752 GET_STATS(get_disk_err, "disk errors", domain->ptr);
1755 #ifdef HAVE_JOB_STATS
1757 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
1758 GET_STATS(get_job_stats, "job stats", domain->ptr);
1761 /* Update cached virDomainInfo. It has to be done after cpu_submit */
1762 memcpy(&domain->info, &info.di, sizeof(domain->info));
1767 static int get_if_dev_stats(struct interface_device *if_dev) {
1768 virDomainInterfaceStatsStruct stats = {0};
1769 char *display_name = NULL;
1772 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
1776 switch (interface_format) {
1778 display_name = if_dev->address;
1781 display_name = if_dev->number;
1785 display_name = if_dev->path;
1788 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
1789 sizeof(stats)) != 0) {
1790 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
1794 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
1795 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
1796 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
1798 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
1799 submit_derive2("if_packets", (derive_t)stats.rx_packets,
1800 (derive_t)stats.tx_packets, if_dev->dom, display_name);
1802 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
1803 submit_derive2("if_errors", (derive_t)stats.rx_errs,
1804 (derive_t)stats.tx_errs, if_dev->dom, display_name);
1806 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
1807 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
1808 (derive_t)stats.tx_drop, if_dev->dom, display_name);
1812 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr conn,
1813 virDomainPtr dom, int event, int detail,
1814 __attribute__((unused)) void *opaque) {
1815 int domain_state = map_domain_event_to_state(event);
1816 int domain_reason = map_domain_event_detail_to_reason(event, detail);
1817 domain_state_submit_notif(dom, domain_state, domain_reason);
1822 static int register_event_impl(void) {
1823 if (virEventRegisterDefaultImpl() < 0) {
1824 virErrorPtr err = virGetLastError();
1826 " plugin: error while event implementation registering: %s",
1827 err && err->message ? err->message : "Unknown error");
1834 /* worker function running default event implementation */
1835 static void *event_loop_worker(__attribute__((unused)) void *arg) {
1837 if (virEventRunDefaultImpl() < 0) {
1838 virErrorPtr err = virGetLastError();
1839 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
1840 err && err->message ? err->message : "Unknown error");
1847 /* register domain event callback and start event loop thread */
1848 static int start_event_loop(void) {
1849 domain_event_cb_id = virConnectDomainEventRegisterAny(
1850 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
1851 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
1852 if (domain_event_cb_id == -1) {
1853 ERROR(PLUGIN_NAME " plugin: error while callback registering");
1857 if (pthread_create(&event_loop_tid, NULL, event_loop_worker, NULL)) {
1858 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
1859 virConnectDomainEventDeregisterAny(conn, domain_event_cb_id);
1866 /* stop event loop thread and deregister callback */
1867 static void stop_event_loop(void) {
1868 if (pthread_cancel(event_loop_tid) != 0)
1869 ERROR(PLUGIN_NAME " plugin: cancelling thread %lu failed", event_loop_tid);
1871 if (pthread_join(event_loop_tid, NULL) != 0)
1872 ERROR(PLUGIN_NAME " plugin: stopping thread %lu failed", event_loop_tid);
1874 if (conn != NULL && domain_event_cb_id != -1)
1875 virConnectDomainEventDeregisterAny(conn, domain_event_cb_id);
1878 static int persistent_domains_state_notification(void) {
1881 #ifdef HAVE_LIST_ALL_DOMAINS
1882 virDomainPtr *domains;
1883 n = virConnectListAllDomains(conn, &domains,
1884 VIR_CONNECT_GET_ALL_DOMAINS_STATS_PERSISTENT);
1886 VIRT_ERROR(conn, "reading list of persistent domains");
1889 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
1890 /* Fetch each persistent domain's state and notify it */
1892 for (int i = 0; i < n; ++i) {
1893 status = get_domain_state_notify(domains[i]);
1896 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
1897 virDomainGetName(domains[i]));
1902 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
1906 n = virConnectNumOfDomains(conn);
1909 /* Get list of domains. */
1910 domids = malloc(sizeof(*domids) * n);
1911 if (domids == NULL) {
1912 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1915 n = virConnectListDomains(conn, domids, n);
1917 VIRT_ERROR(conn, "reading list of domains");
1921 /* Fetch info of each active domain and notify it */
1922 for (int i = 0; i < n; ++i) {
1924 virDomainPtr dom = NULL;
1925 dom = virDomainLookupByID(conn, domids[i]);
1927 VIRT_ERROR(conn, "virDomainLookupByID");
1928 /* Could be that the domain went away -- ignore it anyway. */
1931 status = virDomainGetInfo(dom, &info);
1933 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1937 /* virDomainGetState is not available. Submit 0, which corresponds to
1938 * unknown reason. */
1939 domain_state_submit_notif(dom, info.state, 0);
1948 static int lv_read(user_data_t *ud) {
1950 struct lv_read_instance *inst = NULL;
1951 struct lv_read_state *state = NULL;
1953 if (ud->data == NULL) {
1954 ERROR(PLUGIN_NAME " plugin: NULL userdata");
1959 state = &inst->read_state;
1961 _Bool reconnect = conn == NULL ? 1 : 0;
1962 /* event implementation must be registered before connection is opened */
1963 if (inst->id == 0) {
1964 if (!persistent_notification && reconnect)
1965 if (register_event_impl() != 0)
1968 if (lv_connect() < 0)
1971 if (!persistent_notification && reconnect && conn != NULL)
1972 if (start_event_loop() != 0)
1978 /* Need to refresh domain or device lists? */
1979 if ((last_refresh == (time_t)0) ||
1980 ((interval > 0) && ((last_refresh + interval) <= t))) {
1981 if (inst->id == 0 && persistent_notification) {
1982 int status = persistent_domains_state_notification();
1984 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
1985 "returned with status %i",
1988 if (refresh_lists(inst) != 0) {
1989 if (inst->id == 0) {
1990 if (!persistent_notification)
2000 for (int i = 0; i < state->nr_domains; ++i)
2001 DEBUG(PLUGIN_NAME " plugin: domain %s",
2002 virDomainGetName(state->domains[i].ptr));
2003 for (int i = 0; i < state->nr_block_devices; ++i)
2004 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2005 virDomainGetName(state->block_devices[i].dom),
2006 state->block_devices[i].path);
2007 for (int i = 0; i < state->nr_interface_devices; ++i)
2008 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2009 virDomainGetName(state->interface_devices[i].dom),
2010 state->interface_devices[i].path);
2013 /* Get domains' metrics */
2014 for (int i = 0; i < state->nr_domains; ++i) {
2015 domain_t *dom = &state->domains[i];
2018 status = get_domain_metrics(dom);
2020 status = get_domain_state(dom->ptr);
2023 ERROR(PLUGIN_NAME " failed to get metrics for domain=%s",
2024 virDomainGetName(dom->ptr));
2027 /* Get block device stats for each domain. */
2028 for (int i = 0; i < state->nr_block_devices; ++i) {
2029 int status = get_block_stats(&state->block_devices[i]);
2032 " failed to get stats for block device (%s) in domain %s",
2033 state->block_devices[i].path,
2034 virDomainGetName(state->domains[i].ptr));
2037 /* Get interface stats for each domain. */
2038 for (int i = 0; i < state->nr_interface_devices; ++i) {
2039 int status = get_if_dev_stats(&state->interface_devices[i]);
2042 " failed to get interface stats for device (%s) in domain %s",
2043 state->interface_devices[i].path,
2044 virDomainGetName(state->interface_devices[i].dom));
2050 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2051 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2052 struct lv_read_instance *inst = &(lv_ud->inst);
2054 memset(lv_ud, 0, sizeof(*lv_ud));
2056 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2059 user_data_t *ud = &(lv_ud->ud);
2061 ud->free_func = NULL;
2063 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2065 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2068 static void lv_clean_read_state(struct lv_read_state *state) {
2069 free_block_devices(state);
2070 free_interface_devices(state);
2071 free_domains(state);
2074 static void lv_fini_instance(size_t i) {
2075 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2076 struct lv_read_state *state = &(inst->read_state);
2078 lv_clean_read_state(state);
2080 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2083 static int lv_init(void) {
2084 if (virInitialize() != 0)
2087 /* event implementation must be registered before connection is opened */
2088 if (!persistent_notification)
2089 if (register_event_impl() != 0)
2092 if (lv_connect() != 0)
2095 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2097 if (!persistent_notification)
2098 if (start_event_loop() != 0)
2101 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2103 for (int i = 0; i < nr_instances; ++i)
2104 if (lv_init_instance(i, lv_read) != 0)
2111 * returns 0 on success and <0 on error
2113 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2115 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2116 xmlXPathObjectPtr xpath_obj = NULL;
2117 xmlNodePtr xml_node = NULL;
2121 err = xmlXPathRegisterNs(xpath_ctx,
2122 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2123 (const xmlChar *)METADATA_VM_PARTITION_URI);
2125 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2126 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2130 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2131 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2132 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2133 if (xpath_obj == NULL) {
2134 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2135 xpath_str, dom_name);
2139 if (xpath_obj->type != XPATH_NODESET) {
2140 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2141 "(wanted %d) on domain %s",
2142 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2147 * from now on there is no real error, it's ok if a domain
2148 * doesn't have the metadata partition tag.
2151 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2152 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2153 "expected=1 on domain %s",
2155 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2158 xml_node = xpath_obj->nodesetval->nodeTab[0];
2159 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2163 /* deregister to clean up */
2164 err = xmlXPathRegisterNs(xpath_ctx,
2165 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2167 /* we can't really recover here */
2169 " plugin: deregistration of namespace %s failed for domain %s",
2170 METADATA_VM_PARTITION_PREFIX, dom_name);
2173 xmlXPathFreeObject(xpath_obj);
2178 static int is_known_tag(const char *dom_tag) {
2179 for (int i = 0; i < nr_instances; ++i)
2180 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2185 static int lv_instance_include_domain(struct lv_read_instance *inst,
2186 const char *dom_name,
2187 const char *dom_tag) {
2188 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2191 /* instance#0 will always be there, so it is in charge of extra duties */
2192 if (inst->id == 0) {
2193 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2194 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2195 "with unknown tag '%s'",
2196 inst->tag, dom_name, dom_tag);
2204 static int refresh_lists(struct lv_read_instance *inst) {
2205 struct lv_read_state *state = &inst->read_state;
2208 #ifndef HAVE_LIST_ALL_DOMAINS
2209 n = virConnectNumOfDomains(conn);
2211 VIRT_ERROR(conn, "reading number of domains");
2216 lv_clean_read_state(state);
2218 #ifndef HAVE_LIST_ALL_DOMAINS
2223 #ifdef HAVE_LIST_ALL_DOMAINS
2224 virDomainPtr *domains, *domains_inactive;
2225 int m = virConnectListAllDomains(conn, &domains_inactive,
2226 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2227 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2231 /* Get list of domains. */
2232 domids = malloc(sizeof(*domids) * n);
2233 if (domids == NULL) {
2234 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2238 n = virConnectListDomains(conn, domids, n);
2242 VIRT_ERROR(conn, "reading list of domains");
2243 #ifndef HAVE_LIST_ALL_DOMAINS
2246 sfree(domains_inactive);
2251 #ifdef HAVE_LIST_ALL_DOMAINS
2252 for (int i = 0; i < m; ++i)
2253 if (add_domain(state, domains_inactive[i], 0) < 0) {
2254 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2259 /* Fetch each domain and add it to the list, unless ignore. */
2260 for (int i = 0; i < n; ++i) {
2263 xmlDocPtr xml_doc = NULL;
2264 xmlXPathContextPtr xpath_ctx = NULL;
2265 xmlXPathObjectPtr xpath_obj = NULL;
2266 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2270 #ifdef HAVE_LIST_ALL_DOMAINS
2271 virDomainPtr dom = domains[i];
2273 virDomainPtr dom = NULL;
2274 dom = virDomainLookupByID(conn, domids[i]);
2276 VIRT_ERROR(conn, "virDomainLookupByID");
2277 /* Could be that the domain went away -- ignore it anyway. */
2282 name = virDomainGetName(dom);
2284 VIRT_ERROR(conn, "virDomainGetName");
2288 status = virDomainGetInfo(dom, &info);
2290 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2295 if (info.state != VIR_DOMAIN_RUNNING) {
2296 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", name);
2300 if (il_domains && ignorelist_match(il_domains, name) != 0)
2303 /* Get a list of devices for this domain. */
2304 xml = virDomainGetXMLDesc(dom, 0);
2306 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2310 /* Yuck, XML. Parse out the devices. */
2311 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2312 if (xml_doc == NULL) {
2313 VIRT_ERROR(conn, "xmlReadDoc");
2317 xpath_ctx = xmlXPathNewContext(xml_doc);
2319 if (lv_domain_get_tag(xpath_ctx, name, tag) < 0) {
2320 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2324 if (!lv_instance_include_domain(inst, name, tag))
2327 if (add_domain(state, dom, 1) < 0) {
2328 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2332 /* Block devices. */
2333 const char *bd_xmlpath = "/domain/devices/disk/target[@dev]";
2334 if (blockdevice_format == source)
2335 bd_xmlpath = "/domain/devices/disk/source[@dev]";
2336 xpath_obj = xmlXPathEval((const xmlChar *)bd_xmlpath, xpath_ctx);
2338 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
2339 xpath_obj->nodesetval == NULL)
2342 for (int j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
2346 node = xpath_obj->nodesetval->nodeTab[j];
2349 path = (char *)xmlGetProp(node, (xmlChar *)"dev");
2353 if (il_block_devices &&
2354 ignore_device_match(il_block_devices, name, path) != 0)
2357 add_block_device(state, dom, path);
2362 xmlXPathFreeObject(xpath_obj);
2364 /* Network interfaces. */
2365 xpath_obj = xmlXPathEval(
2366 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2367 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
2368 xpath_obj->nodesetval == NULL)
2371 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2373 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2375 char *address = NULL;
2376 xmlNodePtr xml_interface;
2378 xml_interface = xml_interfaces->nodeTab[j];
2382 for (xmlNodePtr child = xml_interface->children; child;
2383 child = child->next) {
2384 if (child->type != XML_ELEMENT_NODE)
2387 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2388 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2391 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2392 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2398 if (il_interface_devices &&
2399 (ignore_device_match(il_interface_devices, name, path) != 0 ||
2400 ignore_device_match(il_interface_devices, name, address) != 0))
2403 add_interface_device(state, dom, path, address, j + 1);
2413 xmlXPathFreeObject(xpath_obj);
2415 xmlXPathFreeContext(xpath_ctx);
2417 xmlFreeDoc(xml_doc);
2421 #ifdef HAVE_LIST_ALL_DOMAINS
2423 sfree(domains_inactive);
2430 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2431 " domains=%i block_devices=%i iface_devices=%i",
2432 inst->tag, state->nr_domains, state->nr_block_devices,
2433 state->nr_interface_devices);
2438 static void free_domains(struct lv_read_state *state) {
2439 if (state->domains) {
2440 for (int i = 0; i < state->nr_domains; ++i)
2441 virDomainFree(state->domains[i].ptr);
2442 sfree(state->domains);
2444 state->domains = NULL;
2445 state->nr_domains = 0;
2448 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2451 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2454 new_ptr = realloc(state->domains, new_size);
2456 new_ptr = malloc(new_size);
2458 if (new_ptr == NULL)
2461 state->domains = new_ptr;
2462 state->domains[state->nr_domains].ptr = dom;
2463 state->domains[state->nr_domains].active = active;
2464 memset(&state->domains[state->nr_domains].info, 0,
2465 sizeof(state->domains[state->nr_domains].info));
2467 return state->nr_domains++;
2470 static void free_block_devices(struct lv_read_state *state) {
2471 if (state->block_devices) {
2472 for (int i = 0; i < state->nr_block_devices; ++i)
2473 sfree(state->block_devices[i].path);
2474 sfree(state->block_devices);
2476 state->block_devices = NULL;
2477 state->nr_block_devices = 0;
2480 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2482 struct block_device *new_ptr;
2484 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2487 path_copy = strdup(path);
2491 if (state->block_devices)
2492 new_ptr = realloc(state->block_devices, new_size);
2494 new_ptr = malloc(new_size);
2496 if (new_ptr == NULL) {
2500 state->block_devices = new_ptr;
2501 state->block_devices[state->nr_block_devices].dom = dom;
2502 state->block_devices[state->nr_block_devices].path = path_copy;
2503 return state->nr_block_devices++;
2506 static void free_interface_devices(struct lv_read_state *state) {
2507 if (state->interface_devices) {
2508 for (int i = 0; i < state->nr_interface_devices; ++i) {
2509 sfree(state->interface_devices[i].path);
2510 sfree(state->interface_devices[i].address);
2511 sfree(state->interface_devices[i].number);
2513 sfree(state->interface_devices);
2515 state->interface_devices = NULL;
2516 state->nr_interface_devices = 0;
2519 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2520 const char *path, const char *address,
2521 unsigned int number) {
2522 struct interface_device *new_ptr;
2524 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2525 char *path_copy, *address_copy, number_string[15];
2527 if ((path == NULL) || (address == NULL))
2530 path_copy = strdup(path);
2534 address_copy = strdup(address);
2535 if (!address_copy) {
2540 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2542 if (state->interface_devices)
2543 new_ptr = realloc(state->interface_devices, new_size);
2545 new_ptr = malloc(new_size);
2547 if (new_ptr == NULL) {
2549 sfree(address_copy);
2552 state->interface_devices = new_ptr;
2553 state->interface_devices[state->nr_interface_devices].dom = dom;
2554 state->interface_devices[state->nr_interface_devices].path = path_copy;
2555 state->interface_devices[state->nr_interface_devices].address = address_copy;
2556 state->interface_devices[state->nr_interface_devices].number =
2557 strdup(number_string);
2558 return state->nr_interface_devices++;
2561 static int ignore_device_match(ignorelist_t *il, const char *domname,
2562 const char *devpath) {
2566 if ((domname == NULL) || (devpath == NULL))
2569 n = strlen(domname) + strlen(devpath) + 2;
2572 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2575 snprintf(name, n, "%s:%s", domname, devpath);
2576 r = ignorelist_match(il, name);
2581 static int lv_shutdown(void) {
2582 for (int i = 0; i < nr_instances; ++i) {
2583 lv_fini_instance(i);
2586 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2588 if (!persistent_notification)
2593 ignorelist_free(il_domains);
2595 ignorelist_free(il_block_devices);
2596 il_block_devices = NULL;
2597 ignorelist_free(il_interface_devices);
2598 il_interface_devices = NULL;
2603 void module_register(void) {
2604 plugin_register_config(PLUGIN_NAME, lv_config, config_keys, NR_CONFIG_KEYS);
2605 plugin_register_init(PLUGIN_NAME, lv_init);
2606 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);