2 * collectd - src/virt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Richard W.M. Jones <rjones@redhat.com>
20 * Przemyslaw Szczerbik <przemyslawx.szczerbik@intel.com>
26 #include "utils/common/common.h"
27 #include "utils/ignorelist/ignorelist.h"
28 #include "utils_complain.h"
30 #include <libgen.h> /* for basename(3) */
31 #include <libvirt/libvirt.h>
32 #include <libvirt/virterror.h>
33 #include <libxml/parser.h>
34 #include <libxml/tree.h>
35 #include <libxml/xpath.h>
36 #include <libxml/xpathInternals.h>
40 #define PLUGIN_NAME "virt"
42 /* Secure strcat macro assuring null termination. Parameter (n) is the size of
43 buffer (d), allowing this macro to be safe for static and dynamic buffers */
44 #define SSTRNCAT(d, s, n) \
46 size_t _l = strlen(d); \
47 sstrncpy((d) + _l, (s), (n)-_l); \
50 #ifdef LIBVIR_CHECK_VERSION
52 #if LIBVIR_CHECK_VERSION(0, 9, 2)
53 #define HAVE_DOM_REASON 1
56 #if LIBVIR_CHECK_VERSION(0, 9, 5)
57 #define HAVE_BLOCK_STATS_FLAGS 1
58 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1
61 #if LIBVIR_CHECK_VERSION(0, 9, 10)
62 #define HAVE_DISK_ERR 1
65 #if LIBVIR_CHECK_VERSION(0, 9, 11)
66 #define HAVE_CPU_STATS 1
67 #define HAVE_DOM_STATE_PMSUSPENDED 1
68 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1
72 virConnectListAllDomains() appeared in 0.10.2
73 Note that LIBVIR_CHECK_VERSION appeared a year later, so
74 in some systems which actually have virConnectListAllDomains()
77 #if LIBVIR_CHECK_VERSION(0, 10, 2)
78 #define HAVE_LIST_ALL_DOMAINS 1
81 #if LIBVIR_CHECK_VERSION(1, 0, 1)
82 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
85 #if LIBVIR_CHECK_VERSION(1, 1, 1)
86 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
89 #if LIBVIR_CHECK_VERSION(1, 2, 9)
90 #define HAVE_JOB_STATS 1
93 #if LIBVIR_CHECK_VERSION(1, 2, 10)
94 #define HAVE_DOM_REASON_CRASHED 1
97 #if LIBVIR_CHECK_VERSION(1, 2, 11)
98 #define HAVE_FS_INFO 1
101 #if LIBVIR_CHECK_VERSION(1, 2, 15)
102 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
105 #if LIBVIR_CHECK_VERSION(1, 3, 3)
106 #define HAVE_PERF_STATS 1
107 #define HAVE_DOM_REASON_POSTCOPY 1
110 #if LIBVIR_CHECK_VERSION(4, 10, 0)
111 #define HAVE_DOM_REASON_SHUTOFF_DAEMON 1
113 #endif /* LIBVIR_CHECK_VERSION */
115 /* structure used for aggregating notification-thread data*/
116 typedef struct virt_notif_thread_s {
117 pthread_t event_loop_tid;
118 int domain_event_cb_id;
119 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
121 } virt_notif_thread_t;
123 /* PersistentNotification is false by default */
124 static bool persistent_notification = false;
126 static bool report_block_devices = true;
127 static bool report_network_interfaces = true;
129 /* Thread used for handling libvirt notifications events */
130 static virt_notif_thread_t notif_thread;
132 const char *domain_states[] = {
133 [VIR_DOMAIN_NOSTATE] = "no state",
134 [VIR_DOMAIN_RUNNING] = "the domain is running",
135 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
136 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
137 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
138 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
139 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
140 #ifdef HAVE_DOM_STATE_PMSUSPENDED
141 [VIR_DOMAIN_PMSUSPENDED] =
142 "the domain is suspended by guest power management",
146 static int map_domain_event_to_state(int event) {
149 case VIR_DOMAIN_EVENT_STARTED:
150 ret = VIR_DOMAIN_RUNNING;
152 case VIR_DOMAIN_EVENT_SUSPENDED:
153 ret = VIR_DOMAIN_PAUSED;
155 case VIR_DOMAIN_EVENT_RESUMED:
156 ret = VIR_DOMAIN_RUNNING;
158 case VIR_DOMAIN_EVENT_STOPPED:
159 ret = VIR_DOMAIN_SHUTOFF;
161 case VIR_DOMAIN_EVENT_SHUTDOWN:
162 ret = VIR_DOMAIN_SHUTDOWN;
164 #ifdef HAVE_DOM_STATE_PMSUSPENDED
165 case VIR_DOMAIN_EVENT_PMSUSPENDED:
166 ret = VIR_DOMAIN_PMSUSPENDED;
169 #ifdef HAVE_DOM_REASON_CRASHED
170 case VIR_DOMAIN_EVENT_CRASHED:
171 ret = VIR_DOMAIN_CRASHED;
175 ret = VIR_DOMAIN_NOSTATE;
180 #ifdef HAVE_DOM_REASON
181 static int map_domain_event_detail_to_reason(int event, int detail) {
184 case VIR_DOMAIN_EVENT_STARTED:
186 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
187 ret = VIR_DOMAIN_RUNNING_BOOTED;
189 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
191 ret = VIR_DOMAIN_RUNNING_MIGRATED;
193 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
194 ret = VIR_DOMAIN_RUNNING_RESTORED;
196 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
197 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
199 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
200 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
201 ret = VIR_DOMAIN_RUNNING_WAKEUP;
205 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
208 case VIR_DOMAIN_EVENT_SUSPENDED:
210 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
212 ret = VIR_DOMAIN_PAUSED_USER;
214 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
216 ret = VIR_DOMAIN_PAUSED_MIGRATION;
218 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
220 ret = VIR_DOMAIN_PAUSED_IOERROR;
222 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
224 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
226 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
228 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
230 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
232 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
234 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
236 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
238 #ifdef HAVE_DOM_REASON_POSTCOPY
239 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
241 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
243 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
245 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
249 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
252 case VIR_DOMAIN_EVENT_RESUMED:
254 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
256 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
258 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
260 ret = VIR_DOMAIN_RUNNING_MIGRATED;
262 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
263 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
265 #ifdef HAVE_DOM_REASON_POSTCOPY
266 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
267 running in post-copy mode */
268 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
272 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
275 case VIR_DOMAIN_EVENT_STOPPED:
277 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
278 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
280 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
281 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
283 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
284 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
286 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
287 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
289 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
290 ret = VIR_DOMAIN_SHUTOFF_SAVED;
292 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
293 ret = VIR_DOMAIN_SHUTOFF_FAILED;
295 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
296 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
299 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
302 case VIR_DOMAIN_EVENT_SHUTDOWN:
304 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
306 #ifdef LIBVIR_CHECK_VERSION
307 #if LIBVIR_CHECK_VERSION(3, 4, 0)
308 case VIR_DOMAIN_EVENT_SHUTDOWN_GUEST: /* Domain finished shutting down after
309 request from the guest itself (e.g.
310 hardware-specific action) */
311 case VIR_DOMAIN_EVENT_SHUTDOWN_HOST: /* Domain finished shutting down after
312 request from the host (e.g. killed
316 ret = VIR_DOMAIN_SHUTDOWN_USER;
319 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
322 #ifdef HAVE_DOM_STATE_PMSUSPENDED
323 case VIR_DOMAIN_EVENT_PMSUSPENDED:
325 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
327 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
329 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
330 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
333 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
337 case VIR_DOMAIN_EVENT_CRASHED:
339 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
340 ret = VIR_DOMAIN_CRASHED_PANICKED;
343 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
347 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
352 #define DOMAIN_STATE_REASON_MAX_SIZE 20
353 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
354 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
355 "the reason is unknown",
357 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
358 "the reason is unknown",
359 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
360 "normal startup from boot",
361 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
362 "migrated from another host",
363 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
364 "restored from a state file",
365 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
366 "restored from snapshot",
367 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
368 "returned from paused state",
369 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
370 "returned from migration",
371 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
372 "returned from failed save process",
373 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
374 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
375 "returned from pmsuspended due to wakeup event",
377 #ifdef HAVE_DOM_REASON_CRASHED
378 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
379 "resumed from crashed",
381 #ifdef HAVE_DOM_REASON_POSTCOPY
382 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
383 "running in post-copy migration mode",
385 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
386 "the reason is unknown",
388 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
389 "the reason is unknown",
390 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
391 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
392 "paused for offline migration",
393 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
395 "paused for offline core dump",
396 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
397 "paused due to a disk I/O error",
398 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
399 "paused due to a watchdog event",
400 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
401 "paused after restoring from snapshot",
402 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
403 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
404 "paused during shutdown process",
406 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
407 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
408 "paused while creating a snapshot",
410 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
411 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
412 "paused due to a guest crash",
414 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
415 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
416 "the domain is being started",
418 #ifdef HAVE_DOM_REASON_POSTCOPY
419 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
420 "paused for post-copy migration",
421 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
422 "paused after failed post-copy",
424 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
425 "the reason is unknown",
426 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
427 "shutting down on user request",
429 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
430 "the reason is unknown",
431 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
432 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
433 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
434 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
435 "migrated to another host",
436 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
437 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
438 "domain failed to start",
439 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
440 "restored from a snapshot which was taken while domain was shutoff",
441 #ifdef HAVE_DOM_REASON_SHUTOFF_DAEMON
442 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DAEMON] =
443 "daemon decides to kill domain during reconnection processing",
446 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
447 "the reason is unknown",
448 #ifdef VIR_DOMAIN_CRASHED_PANICKED
449 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
452 #ifdef HAVE_DOM_STATE_PMSUSPENDED
453 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
454 "the reason is unknown",
457 #endif /* HAVE_DOM_REASON */
459 #define NANOSEC_IN_SEC 1e9
461 #define GET_STATS(_f, _name, ...) \
463 status = _f(__VA_ARGS__); \
465 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
469 static virConnectPtr conn;
470 static char *conn_string;
471 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
473 /* Node information required for %CPU */
474 static virNodeInfo nodeinfo;
476 /* Seconds between list refreshes, 0 disables completely. */
477 static int interval = 60;
479 /* List of domains, if specified. */
480 static ignorelist_t *il_domains;
481 /* List of block devices, if specified. */
482 static ignorelist_t *il_block_devices;
483 /* List of network interface devices, if specified. */
484 static ignorelist_t *il_interface_devices;
486 static int ignore_device_match(ignorelist_t *, const char *domname,
487 const char *devpath);
489 /* Actual list of block devices found on last refresh. */
490 struct block_device {
491 virDomainPtr dom; /* domain */
492 char *path; /* name of block device */
493 bool has_source; /* information whether source is defined or not */
496 /* Actual list of network interfaces found on last refresh. */
497 struct interface_device {
498 virDomainPtr dom; /* domain */
499 char *path; /* name of interface device */
500 char *address; /* mac address of interface device */
501 char *number; /* interface device number */
504 typedef struct domain_s {
510 struct lv_read_state {
511 /* Actual list of domains found on last refresh. */
515 struct block_device *block_devices;
516 int nr_block_devices;
518 struct interface_device *interface_devices;
519 int nr_interface_devices;
522 static void free_domains(struct lv_read_state *state);
523 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
526 static void free_block_devices(struct lv_read_state *state);
527 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
528 const char *path, bool has_source);
530 static void free_interface_devices(struct lv_read_state *state);
531 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
532 const char *path, const char *address,
533 unsigned int number);
535 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
536 #define METADATA_VM_PARTITION_ELEMENT "tag"
537 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
539 #define BUFFER_MAX_LEN 256
540 #define PARTITION_TAG_MAX_LEN 32
542 struct lv_read_instance {
543 struct lv_read_state read_state;
544 char tag[PARTITION_TAG_MAX_LEN];
548 struct lv_user_data {
549 struct lv_read_instance inst;
553 #define NR_INSTANCES_DEFAULT 1
554 #define NR_INSTANCES_MAX 128
555 static int nr_instances = NR_INSTANCES_DEFAULT;
556 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
558 /* HostnameFormat. */
559 #define HF_MAX_FIELDS 4
561 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
563 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
565 /* PluginInstanceFormat */
566 #define PLGINST_MAX_FIELDS 3
575 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
578 /* HostnameMetadataNS && HostnameMetadataXPath */
579 static char *hm_xpath;
582 /* BlockDeviceFormat */
583 enum bd_field { target, source };
585 /* InterfaceFormat. */
586 enum if_field { if_address, if_name, if_number };
589 #define EX_STATS_MAX_FIELDS 15
592 ex_stats_disk = 1 << 0,
593 ex_stats_pcpu = 1 << 1,
594 ex_stats_cpu_util = 1 << 2,
595 ex_stats_domain_state = 1 << 3,
596 #ifdef HAVE_PERF_STATS
597 ex_stats_perf = 1 << 4,
599 ex_stats_vcpupin = 1 << 5,
601 ex_stats_disk_err = 1 << 6,
604 ex_stats_fs_info = 1 << 7,
606 #ifdef HAVE_JOB_STATS
607 ex_stats_job_stats_completed = 1 << 8,
608 ex_stats_job_stats_background = 1 << 9,
610 ex_stats_disk_allocation = 1 << 10,
611 ex_stats_disk_capacity = 1 << 11,
612 ex_stats_disk_physical = 1 << 12
615 static unsigned int extra_stats = ex_stats_none;
617 struct ex_stats_item {
621 static const struct ex_stats_item ex_stats_table[] = {
622 {"disk", ex_stats_disk},
623 {"pcpu", ex_stats_pcpu},
624 {"cpu_util", ex_stats_cpu_util},
625 {"domain_state", ex_stats_domain_state},
626 #ifdef HAVE_PERF_STATS
627 {"perf", ex_stats_perf},
629 {"vcpupin", ex_stats_vcpupin},
631 {"disk_err", ex_stats_disk_err},
634 {"fs_info", ex_stats_fs_info},
636 #ifdef HAVE_JOB_STATS
637 {"job_stats_completed", ex_stats_job_stats_completed},
638 {"job_stats_background", ex_stats_job_stats_background},
640 {"disk_allocation", ex_stats_disk_allocation},
641 {"disk_capacity", ex_stats_disk_capacity},
642 {"disk_physical", ex_stats_disk_physical},
643 {NULL, ex_stats_none},
646 /* BlockDeviceFormatBasename */
647 static bool blockdevice_format_basename;
648 static enum bd_field blockdevice_format = target;
649 static enum if_field interface_format = if_name;
651 /* Time that we last refreshed. */
652 static time_t last_refresh = (time_t)0;
654 static int refresh_lists(struct lv_read_instance *inst);
655 static int register_event_impl(void);
656 static int start_event_loop(virt_notif_thread_t *thread_data);
658 struct lv_block_stats {
659 virDomainBlockStatsStruct bi;
661 long long rd_total_times;
662 long long wr_total_times;
665 long long fl_total_times;
668 static void init_block_stats(struct lv_block_stats *bstats) {
672 bstats->bi.rd_req = -1;
673 bstats->bi.wr_req = -1;
674 bstats->bi.rd_bytes = -1;
675 bstats->bi.wr_bytes = -1;
677 bstats->rd_total_times = -1;
678 bstats->wr_total_times = -1;
680 bstats->fl_total_times = -1;
683 static void init_block_info(virDomainBlockInfoPtr binfo) {
684 binfo->allocation = -1;
685 binfo->capacity = -1;
686 binfo->physical = -1;
689 #ifdef HAVE_BLOCK_STATS_FLAGS
691 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
692 if (!strcmp(param[i].field, NAME)) { \
693 bstats->FIELD = param[i].value.l; \
697 static int get_block_stats(struct lv_block_stats *bstats,
698 virTypedParameterPtr param, int nparams) {
699 if (bstats == NULL || param == NULL)
702 for (int i = 0; i < nparams; ++i) {
703 /* ignore type. Everything must be LLONG anyway. */
704 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
705 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
706 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
707 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
708 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
709 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
710 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
711 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
717 #undef GET_BLOCK_STATS_VALUE
719 #endif /* HAVE_BLOCK_STATS_FLAGS */
721 /* ERROR(...) macro for virterrors. */
722 #define VIRT_ERROR(conn, s) \
725 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
727 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
730 static char *metadata_get_hostname(virDomainPtr dom) {
731 const char *xpath_str = NULL;
732 if (hm_xpath == NULL)
733 xpath_str = "/instance/name/text()";
735 xpath_str = hm_xpath;
737 const char *namespace = NULL;
739 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
744 char *metadata_str = virDomainGetMetadata(
745 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
746 if (metadata_str == NULL) {
750 char *hostname = NULL;
751 xmlXPathContextPtr xpath_ctx = NULL;
752 xmlXPathObjectPtr xpath_obj = NULL;
753 xmlNodePtr xml_node = NULL;
756 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
757 if (xml_doc == NULL) {
758 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
762 xpath_ctx = xmlXPathNewContext(xml_doc);
763 if (xpath_ctx == NULL) {
764 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
768 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
769 if (xpath_obj == NULL) {
770 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
775 if (xpath_obj->type != XPATH_NODESET) {
776 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
777 "(wanted %d) for metadata",
778 xpath_str, xpath_obj->type, XPATH_NODESET);
782 // TODO(sileht): We can support || operator by looping on nodes here
783 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
784 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
785 "expected=1 for metadata",
787 (xpath_obj->nodesetval == NULL) ? 0
788 : xpath_obj->nodesetval->nodeNr);
792 xml_node = xpath_obj->nodesetval->nodeTab[0];
793 if (xml_node->type == XML_TEXT_NODE) {
794 hostname = strdup((const char *)xml_node->content);
795 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
796 hostname = strdup((const char *)xml_node->children->content);
798 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
799 xpath_str, xml_node->type);
803 if (hostname == NULL) {
804 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
810 xmlXPathFreeObject(xpath_obj);
812 xmlXPathFreeContext(xpath_ctx);
819 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
821 char uuid[VIR_UUID_STRING_BUFLEN];
823 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
827 /* Construct the hostname field according to HostnameFormat. */
828 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
829 if (hostname_format[i] == hf_none)
833 SSTRNCAT(vl->host, ":", sizeof(vl->host));
835 switch (hostname_format[i]) {
839 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
842 name = virDomainGetName(dom);
844 SSTRNCAT(vl->host, name, sizeof(vl->host));
847 if (virDomainGetUUIDString(dom, uuid) == 0)
848 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
851 name = metadata_get_hostname(dom);
853 SSTRNCAT(vl->host, name, sizeof(vl->host));
858 /* Construct the plugin instance field according to PluginInstanceFormat. */
859 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
860 if (plugin_instance_format[i] == plginst_none)
864 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
866 switch (plugin_instance_format[i]) {
870 name = virDomainGetName(dom);
872 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
875 if (virDomainGetUUIDString(dom, uuid) == 0)
876 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
878 case plginst_metadata:
879 name = metadata_get_hostname(dom);
881 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
886 } /* void init_value_list */
888 static int init_notif(notification_t *notif, const virDomainPtr domain,
889 int severity, const char *msg, const char *type,
890 const char *type_instance) {
891 value_list_t vl = VALUE_LIST_INIT;
894 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
898 init_value_list(&vl, domain);
899 notification_init(notif, severity, msg, vl.host, vl.plugin,
900 vl.plugin_instance, type, type_instance);
901 notif->time = cdtime();
905 static void submit_notif(const virDomainPtr domain, int severity,
906 const char *msg, const char *type,
907 const char *type_instance) {
908 notification_t notif;
910 init_notif(¬if, domain, severity, msg, type, type_instance);
911 plugin_dispatch_notification(¬if);
913 plugin_notification_meta_free(notif.meta);
916 static void submit(virDomainPtr dom, char const *type,
917 char const *type_instance, value_t *values,
919 value_list_t vl = VALUE_LIST_INIT;
920 init_value_list(&vl, dom);
923 vl.values_len = values_len;
925 sstrncpy(vl.type, type, sizeof(vl.type));
926 if (type_instance != NULL)
927 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
929 plugin_dispatch_values(&vl);
932 static void memory_submit(virDomainPtr dom, gauge_t value) {
933 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
936 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
938 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
939 "minor_fault", "unused", "available",
940 "actual_balloon", "rss", "usable",
941 "last_update", "disk_caches"};
943 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
944 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
948 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
951 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
952 virDomainPtr dom, const char *devname) {
954 {.derive = v0}, {.derive = v1},
957 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
958 } /* void submit_derive2 */
960 static double cpu_ns_to_percent(unsigned int node_cpus,
961 unsigned long long cpu_time_old,
962 unsigned long long cpu_time_new) {
963 double percent = 0.0;
964 unsigned long long cpu_time_diff = 0;
965 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
967 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
968 cpu_time_diff = cpu_time_new - cpu_time_old;
969 percent = ((double)(100 * cpu_time_diff)) /
970 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
973 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
974 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
975 " time_diff_sec=%f percent=%f",
976 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
977 (uint64_t)cpu_time_diff, time_diff_sec, percent);
982 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
987 if (extra_stats & ex_stats_cpu_util) {
988 /* Computing %CPU requires 2 samples of cpuTime */
989 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
991 submit(dom->ptr, "percent", "virt_cpu_total",
992 &(value_t){.gauge = cpu_ns_to_percent(
993 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
998 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
1002 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
1004 char type_instance[DATA_MAX_NAME_LEN];
1006 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
1007 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
1010 static void disk_block_stats_submit(struct lv_block_stats *bstats,
1011 virDomainPtr dom, const char *dev,
1012 virDomainBlockInfoPtr binfo) {
1013 char *dev_copy = strdup(dev);
1014 const char *type_instance = dev_copy;
1019 if (blockdevice_format_basename && blockdevice_format == source)
1020 type_instance = basename(dev_copy);
1022 if (!type_instance) {
1027 char flush_type_instance[DATA_MAX_NAME_LEN];
1028 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1031 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1032 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1033 (derive_t)bstats->bi.wr_req, dom, type_instance);
1035 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1036 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1037 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1039 if (extra_stats & ex_stats_disk) {
1040 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1041 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1042 (derive_t)bstats->wr_total_times, dom, type_instance);
1044 if (bstats->fl_req != -1)
1045 submit(dom, "total_requests", flush_type_instance,
1046 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1047 if (bstats->fl_total_times != -1) {
1048 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1049 submit(dom, "total_time_in_ms", flush_type_instance,
1050 &(value_t){.derive = value}, 1);
1054 /* disk_allocation, disk_capacity and disk_physical are stored only
1055 * if corresponding extrastats are set in collectd configuration file */
1056 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1057 submit(dom, "disk_allocation", type_instance,
1058 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1060 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1061 submit(dom, "disk_capacity", type_instance,
1062 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1064 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1065 submit(dom, "disk_physical", type_instance,
1066 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1072 * Function for parsing ExtraStats configuration options.
1073 * Result of parsing is stored under 'out_parsed_flags' pointer.
1075 * Returns 0 in case of success and 1 in case of parsing error
1077 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1079 unsigned int ex_stats_flags = ex_stats_none;
1081 assert(out_parsed_flags != NULL);
1083 for (int i = 0; i < numexstats; i++) {
1084 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1085 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1086 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1087 ex_stats_table[j].name);
1088 ex_stats_flags |= ex_stats_table[j].flag;
1092 if (ex_stats_table[j + 1].name == NULL) {
1093 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1100 *out_parsed_flags = ex_stats_flags;
1104 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1105 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1106 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1110 char msg[DATA_MAX_NAME_LEN];
1111 const char *state_str = domain_states[state];
1112 #ifdef HAVE_DOM_REASON
1114 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1115 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1119 const char *reason_str = domain_reasons[state][reason];
1120 /* Array size for domain reasons is fixed, but different domain states can
1121 * have different number of reasons. We need to check if reason was
1122 * successfully parsed */
1124 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1129 const char *reason_str = "N/A";
1132 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1137 case VIR_DOMAIN_NOSTATE:
1138 case VIR_DOMAIN_RUNNING:
1139 case VIR_DOMAIN_SHUTDOWN:
1140 case VIR_DOMAIN_SHUTOFF:
1141 severity = NOTIF_OKAY;
1143 case VIR_DOMAIN_BLOCKED:
1144 case VIR_DOMAIN_PAUSED:
1145 #ifdef DOM_STATE_PMSUSPENDED
1146 case VIR_DOMAIN_PMSUSPENDED:
1148 severity = NOTIF_WARNING;
1150 case VIR_DOMAIN_CRASHED:
1151 severity = NOTIF_FAILURE;
1154 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1157 submit_notif(dom, severity, msg, "domain_state", NULL);
1160 static int lv_init_ignorelists() {
1161 if (il_domains == NULL)
1162 il_domains = ignorelist_create(1);
1163 if (il_block_devices == NULL)
1164 il_block_devices = ignorelist_create(1);
1165 if (il_interface_devices == NULL)
1166 il_interface_devices = ignorelist_create(1);
1168 if (!il_domains || !il_block_devices || !il_interface_devices)
1174 /* Validates config option that may take multiple strings arguments.
1175 * Returns 0 on success, -1 otherwise */
1176 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1178 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1182 if (ci->values_num < 1) {
1184 " plugin: the '%s' option requires at least one string argument",
1189 for (int i = 0; i < ci->values_num; ++i) {
1190 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1192 " plugin: one of the '%s' options is not a valid string",
1201 static int lv_config(oconfig_item_t *ci) {
1202 if (lv_init_ignorelists() != 0) {
1203 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1207 for (int i = 0; i < ci->children_num; ++i) {
1208 oconfig_item_t *c = ci->children + i;
1210 if (strcasecmp(c->key, "Connection") == 0) {
1211 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1215 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1216 if (cf_util_get_int(c, &interval) != 0)
1220 } else if (strcasecmp(c->key, "Domain") == 0) {
1221 char *domain_name = NULL;
1222 if (cf_util_get_string(c, &domain_name) != 0)
1225 if (ignorelist_add(il_domains, domain_name)) {
1226 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1234 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1235 char *device_name = NULL;
1236 if (cf_util_get_string(c, &device_name) != 0)
1239 if (ignorelist_add(il_block_devices, device_name) != 0) {
1241 " plugin: Adding '%s' to block-device-ignorelist failed",
1249 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1250 char *device_format = NULL;
1251 if (cf_util_get_string(c, &device_format) != 0)
1254 if (strcasecmp(device_format, "target") == 0)
1255 blockdevice_format = target;
1256 else if (strcasecmp(device_format, "source") == 0)
1257 blockdevice_format = source;
1259 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1261 sfree(device_format);
1265 sfree(device_format);
1267 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1268 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1272 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1273 char *interface_name = NULL;
1274 if (cf_util_get_string(c, &interface_name) != 0)
1277 if (ignorelist_add(il_interface_devices, interface_name)) {
1278 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1280 sfree(interface_name);
1284 sfree(interface_name);
1286 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1287 bool ignore_selected = false;
1288 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1291 if (ignore_selected) {
1292 ignorelist_set_invert(il_domains, 0);
1293 ignorelist_set_invert(il_block_devices, 0);
1294 ignorelist_set_invert(il_interface_devices, 0);
1296 ignorelist_set_invert(il_domains, 1);
1297 ignorelist_set_invert(il_block_devices, 1);
1298 ignorelist_set_invert(il_interface_devices, 1);
1302 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1303 if (cf_util_get_string(c, &hm_ns) != 0)
1307 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1308 if (cf_util_get_string(c, &hm_xpath) != 0)
1312 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1313 /* this option can take multiple strings arguments in one config line*/
1314 if (check_config_multiple_string_entry(c) != 0) {
1315 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1319 const int params_num = c->values_num;
1320 for (int i = 0; i < params_num; ++i) {
1321 const char *param_name = c->values[i].value.string;
1322 if (strcasecmp(param_name, "hostname") == 0)
1323 hostname_format[i] = hf_hostname;
1324 else if (strcasecmp(param_name, "name") == 0)
1325 hostname_format[i] = hf_name;
1326 else if (strcasecmp(param_name, "uuid") == 0)
1327 hostname_format[i] = hf_uuid;
1328 else if (strcasecmp(param_name, "metadata") == 0)
1329 hostname_format[i] = hf_metadata;
1331 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1337 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1338 hostname_format[i] = hf_none;
1341 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1342 /* this option can handle list of string parameters in one line*/
1343 if (check_config_multiple_string_entry(c) != 0) {
1345 " plugin: Could not get 'PluginInstanceFormat' parameter");
1349 const int params_num = c->values_num;
1350 for (int i = 0; i < params_num; ++i) {
1351 const char *param_name = c->values[i].value.string;
1352 if (strcasecmp(param_name, "none") == 0) {
1353 plugin_instance_format[i] = plginst_none;
1355 } else if (strcasecmp(param_name, "name") == 0)
1356 plugin_instance_format[i] = plginst_name;
1357 else if (strcasecmp(param_name, "uuid") == 0)
1358 plugin_instance_format[i] = plginst_uuid;
1359 else if (strcasecmp(param_name, "metadata") == 0)
1360 plugin_instance_format[i] = plginst_metadata;
1362 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1369 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1370 plugin_instance_format[i] = plginst_none;
1373 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1374 char *format = NULL;
1375 if (cf_util_get_string(c, &format) != 0)
1378 if (strcasecmp(format, "name") == 0)
1379 interface_format = if_name;
1380 else if (strcasecmp(format, "address") == 0)
1381 interface_format = if_address;
1382 else if (strcasecmp(format, "number") == 0)
1383 interface_format = if_number;
1385 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1392 } else if (strcasecmp(c->key, "Instances") == 0) {
1393 if (cf_util_get_int(c, &nr_instances) != 0)
1396 if (nr_instances <= 0) {
1397 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1400 if (nr_instances > NR_INSTANCES_MAX) {
1401 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1402 " use a lower setting or recompile the plugin.",
1403 nr_instances, NR_INSTANCES_MAX);
1407 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1409 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1410 char *ex_str = NULL;
1412 if (cf_util_get_string(c, &ex_str) != 0)
1415 char *exstats[EX_STATS_MAX_FIELDS];
1416 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1417 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1420 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1424 #ifdef HAVE_JOB_STATS
1425 if ((extra_stats & ex_stats_job_stats_completed) &&
1426 (extra_stats & ex_stats_job_stats_background)) {
1427 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1428 "type of job statistics can be collected at the same "
1434 /* ExtraStats parsed successfully */
1436 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1437 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1441 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1442 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1446 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1447 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1452 /* Unrecognised option. */
1453 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1461 static int lv_connect(void) {
1463 /* event implementation must be registered before connection is opened */
1464 if (!persistent_notification)
1465 if (register_event_impl() != 0)
1468 /* `conn_string == NULL' is acceptable */
1470 /* virDomainGetFSInfo requires full read-write access connection */
1471 if (extra_stats & ex_stats_fs_info)
1472 conn = virConnectOpen(conn_string);
1475 conn = virConnectOpenReadOnly(conn_string);
1477 c_complain(LOG_ERR, &conn_complain,
1478 PLUGIN_NAME " plugin: Unable to connect: "
1479 "virConnectOpen failed.");
1482 int status = virNodeGetInfo(conn, &nodeinfo);
1484 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1485 virConnectClose(conn);
1490 if (!persistent_notification)
1491 if (start_event_loop(¬if_thread) != 0) {
1492 virConnectClose(conn);
1497 c_release(LOG_NOTICE, &conn_complain,
1498 PLUGIN_NAME " plugin: Connection established.");
1502 static void lv_disconnect(void) {
1504 virConnectClose(conn);
1506 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1509 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1510 struct lv_block_stats *bstats) {
1511 #ifdef HAVE_BLOCK_STATS_FLAGS
1513 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1515 VIRT_ERROR(conn, "getting the disk params count");
1519 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1520 if (params == NULL) {
1521 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1527 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1528 VIRT_ERROR(conn, "getting the disk params values");
1530 rc = get_block_stats(bstats, params, nparams);
1533 virTypedParamsClear(params, nparams);
1537 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1538 #endif /* HAVE_BLOCK_STATS_FLAGS */
1541 #ifdef HAVE_PERF_STATS
1542 static void perf_submit(virDomainStatsRecordPtr stats) {
1543 for (int i = 0; i < stats->nparams; ++i) {
1544 /* Replace '.' with '_' in event field to match other metrics' naming
1546 char *c = strchr(stats->params[i].field, '.');
1549 submit(stats->dom, "perf", stats->params[i].field,
1550 &(value_t){.derive = stats->params[i].value.ul}, 1);
1554 static int get_perf_events(virDomainPtr domain) {
1555 virDomainStatsRecordPtr *stats = NULL;
1556 /* virDomainListGetStats requires a NULL terminated list of domains */
1557 virDomainPtr domain_array[] = {domain, NULL};
1560 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1562 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1566 for (int i = 0; i < status; ++i)
1567 perf_submit(stats[i]);
1569 virDomainStatsRecordListFree(stats);
1572 #endif /* HAVE_PERF_STATS */
1574 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1575 unsigned char *cpu_maps, int cpu_map_len) {
1576 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1577 char type_instance[DATA_MAX_NAME_LEN];
1578 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1580 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1581 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1585 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1586 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1587 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1589 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1590 if (vinfo == NULL) {
1591 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1595 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1596 if (cpumaps == NULL) {
1597 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1603 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1605 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1612 for (int i = 0; i < nr_virt_cpu; ++i) {
1613 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1614 if (extra_stats & ex_stats_vcpupin)
1615 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1623 #ifdef HAVE_CPU_STATS
1624 static int get_pcpu_stats(virDomainPtr dom) {
1625 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1627 VIRT_ERROR(conn, "getting the CPU params count");
1631 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1632 if (param == NULL) {
1633 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1637 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1639 virTypedParamsClear(param, nparams);
1641 VIRT_ERROR(conn, "getting the CPU params values");
1645 unsigned long long total_user_cpu_time = 0;
1646 unsigned long long total_syst_cpu_time = 0;
1648 for (int i = 0; i < nparams; ++i) {
1649 if (!strcmp(param[i].field, "user_time"))
1650 total_user_cpu_time = param[i].value.ul;
1651 else if (!strcmp(param[i].field, "system_time"))
1652 total_syst_cpu_time = param[i].value.ul;
1655 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1656 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1659 virTypedParamsClear(param, nparams);
1664 #endif /* HAVE_CPU_STATS */
1666 #ifdef HAVE_DOM_REASON
1668 static void domain_state_submit(virDomainPtr dom, int state, int reason) {
1669 value_t values[] = {
1670 {.gauge = (gauge_t)state}, {.gauge = (gauge_t)reason},
1673 submit(dom, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1676 static int get_domain_state(virDomainPtr domain) {
1677 int domain_state = 0;
1678 int domain_reason = 0;
1680 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1682 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1687 domain_state_submit(domain, domain_state, domain_reason);
1692 #ifdef HAVE_LIST_ALL_DOMAINS
1693 static int get_domain_state_notify(virDomainPtr domain) {
1694 int domain_state = 0;
1695 int domain_reason = 0;
1697 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1699 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1704 if (persistent_notification)
1705 domain_state_submit_notif(domain, domain_state, domain_reason);
1709 #endif /* HAVE_LIST_ALL_DOMAINS */
1710 #endif /* HAVE_DOM_REASON */
1712 static int get_memory_stats(virDomainPtr domain) {
1713 virDomainMemoryStatPtr minfo =
1714 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1715 if (minfo == NULL) {
1716 ERROR("virt plugin: calloc failed.");
1721 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1722 if (mem_stats < 0) {
1723 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1729 for (int i = 0; i < mem_stats; i++)
1730 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1736 #ifdef HAVE_DISK_ERR
1737 static void disk_err_submit(virDomainPtr domain,
1738 virDomainDiskErrorPtr disk_err) {
1739 submit(domain, "disk_error", disk_err->disk,
1740 &(value_t){.gauge = disk_err->error}, 1);
1743 static int get_disk_err(virDomainPtr domain) {
1744 /* Get preferred size of disk errors array */
1745 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1746 if (disk_err_count == -1) {
1748 " plugin: failed to get preferred size of disk errors array");
1753 " plugin: preferred size of disk errors array: %d for domain %s",
1754 disk_err_count, virDomainGetName(domain));
1755 virDomainDiskError disk_err[disk_err_count];
1757 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1758 if (disk_err_count == -1) {
1759 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1764 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1765 disk_err_count, virDomainGetName(domain));
1767 for (int i = 0; i < disk_err_count; ++i) {
1768 disk_err_submit(domain, &disk_err[i]);
1769 sfree(disk_err[i].disk);
1774 #endif /* HAVE_DISK_ERR */
1776 static int get_block_device_stats(struct block_device *block_dev) {
1778 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1782 virDomainBlockInfo binfo;
1783 init_block_info(&binfo);
1785 /* Fetching block info stats only if needed*/
1786 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1787 ex_stats_disk_physical)) {
1788 /* Block info statistics can be only fetched from devices with 'source'
1790 if (block_dev->has_source) {
1791 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1793 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1800 struct lv_block_stats bstats;
1801 init_block_stats(&bstats);
1803 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1804 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1808 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1814 #define NM_ADD_ITEM(_fun, _name, _val) \
1816 ret = _fun(¬if, _name, _val); \
1818 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1823 #define NM_ADD_STR_ITEMS(_items, _size) \
1825 for (size_t _i = 0; _i < _size; ++_i) { \
1827 " plugin: Adding notification metadata name=%s value=%s", \
1828 _items[_i].name, _items[_i].value); \
1829 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1830 _items[_i].value); \
1834 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1835 notification_t notif;
1838 /* Local struct, just for the purpose of this function. */
1839 typedef struct nm_str_item_s {
1844 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1845 nm_str_item_t fs_str_items[] = {
1846 {.name = "mountpoint", .value = fs_info->mountpoint},
1847 {.name = "name", .value = fs_info->name},
1848 {.name = "fstype", .value = fs_info->fstype}};
1850 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1851 fs_dev_alias[i].name = "devAlias";
1852 fs_dev_alias[i].value = fs_info->devAlias[i];
1855 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1856 "file_system", NULL);
1857 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1858 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1859 fs_info->ndevAlias);
1860 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1862 plugin_dispatch_notification(¬if);
1866 plugin_notification_meta_free(notif.meta);
1870 #undef RETURN_ON_ERR
1871 #undef NM_ADD_STR_ITEMS
1873 static int get_fs_info(virDomainPtr domain) {
1874 virDomainFSInfoPtr *fs_info = NULL;
1877 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1878 if (mount_points_cnt == -1) {
1879 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1881 return mount_points_cnt;
1884 for (int i = 0; i < mount_points_cnt; ++i) {
1885 if (fs_info_notify(domain, fs_info[i]) != 0) {
1886 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1887 "for mount point %s",
1888 fs_info[i]->mountpoint);
1891 virDomainFSInfoFree(fs_info[i]);
1898 #endif /* HAVE_FS_INFO */
1900 #ifdef HAVE_JOB_STATS
1901 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1904 if (param->type == VIR_TYPED_PARAM_INT)
1905 vl.derive = param->value.i;
1906 else if (param->type == VIR_TYPED_PARAM_UINT)
1907 vl.derive = param->value.ui;
1908 else if (param->type == VIR_TYPED_PARAM_LLONG)
1909 vl.derive = param->value.l;
1910 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1911 vl.derive = param->value.ul;
1912 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1913 vl.derive = param->value.d;
1914 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1915 vl.derive = param->value.b;
1916 else if (param->type == VIR_TYPED_PARAM_STRING) {
1917 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1920 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1924 submit(domain, "job_stats", param->field, &vl, 1);
1927 static int get_job_stats(virDomainPtr domain) {
1931 virTypedParameterPtr params = NULL;
1932 int flags = (extra_stats & ex_stats_job_stats_completed)
1933 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1936 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1938 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1942 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1944 for (int i = 0; i < nparams; ++i) {
1945 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1947 job_stats_submit(domain, ¶ms[i]);
1950 virTypedParamsFree(params, nparams);
1953 #endif /* HAVE_JOB_STATS */
1955 static int get_domain_metrics(domain_t *domain) {
1956 if (!domain || !domain->ptr) {
1957 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
1962 int status = virDomainGetInfo(domain->ptr, &info);
1964 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1969 if (extra_stats & ex_stats_domain_state) {
1970 #ifdef HAVE_DOM_REASON
1971 /* At this point we already know domain's state from virDomainGetInfo call,
1972 * however it doesn't provide a reason for entering particular state.
1973 * We need to get it from virDomainGetState.
1975 GET_STATS(get_domain_state, "domain reason", domain->ptr);
1979 /* Gather remaining stats only for running domains */
1980 if (info.state != VIR_DOMAIN_RUNNING)
1983 #ifdef HAVE_CPU_STATS
1984 if (extra_stats & ex_stats_pcpu)
1985 get_pcpu_stats(domain->ptr);
1988 cpu_submit(domain, info.cpuTime);
1990 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
1992 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
1993 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
1995 #ifdef HAVE_PERF_STATS
1996 if (extra_stats & ex_stats_perf)
1997 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
2001 if (extra_stats & ex_stats_fs_info)
2002 GET_STATS(get_fs_info, "file system info", domain->ptr);
2005 #ifdef HAVE_DISK_ERR
2006 if (extra_stats & ex_stats_disk_err)
2007 GET_STATS(get_disk_err, "disk errors", domain->ptr);
2010 #ifdef HAVE_JOB_STATS
2012 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
2013 GET_STATS(get_job_stats, "job stats", domain->ptr);
2016 /* Update cached virDomainInfo. It has to be done after cpu_submit */
2017 memcpy(&domain->info, &info, sizeof(domain->info));
2022 static int get_if_dev_stats(struct interface_device *if_dev) {
2023 virDomainInterfaceStatsStruct stats = {0};
2024 char *display_name = NULL;
2027 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
2031 switch (interface_format) {
2033 display_name = if_dev->address;
2036 display_name = if_dev->number;
2040 display_name = if_dev->path;
2043 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2044 sizeof(stats)) != 0) {
2045 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2049 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2050 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2051 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2053 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2054 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2055 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2057 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2058 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2059 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2061 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2062 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2063 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2067 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2068 virDomainPtr dom, int event, int detail,
2069 __attribute__((unused)) void *opaque) {
2070 int domain_state = map_domain_event_to_state(event);
2071 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2072 #ifdef HAVE_DOM_REASON
2073 domain_reason = map_domain_event_detail_to_reason(event, detail);
2075 domain_state_submit_notif(dom, domain_state, domain_reason);
2080 static int register_event_impl(void) {
2081 if (virEventRegisterDefaultImpl() < 0) {
2082 virErrorPtr err = virGetLastError();
2084 " plugin: error while event implementation registering: %s",
2085 err && err->message ? err->message : "Unknown error");
2092 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2093 const bool active) {
2094 assert(thread_data != NULL);
2095 pthread_mutex_lock(&thread_data->active_mutex);
2096 thread_data->is_active = active;
2097 pthread_mutex_unlock(&thread_data->active_mutex);
2100 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2101 bool active = false;
2103 assert(thread_data != NULL);
2104 pthread_mutex_lock(&thread_data->active_mutex);
2105 active = thread_data->is_active;
2106 pthread_mutex_unlock(&thread_data->active_mutex);
2111 /* worker function running default event implementation */
2112 static void *event_loop_worker(void *arg) {
2113 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2115 while (virt_notif_thread_is_active(thread_data)) {
2116 if (virEventRunDefaultImpl() < 0) {
2117 virErrorPtr err = virGetLastError();
2118 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2119 err && err->message ? err->message : "Unknown error");
2126 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2127 assert(thread_data != NULL);
2129 int ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2131 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2136 * '0' and positive integers are meaningful ID's, therefore setting
2137 * domain_event_cb_id to '-1'
2139 thread_data->domain_event_cb_id = -1;
2140 pthread_mutex_lock(&thread_data->active_mutex);
2141 thread_data->is_active = false;
2142 pthread_mutex_unlock(&thread_data->active_mutex);
2147 /* register domain event callback and start event loop thread */
2148 static int start_event_loop(virt_notif_thread_t *thread_data) {
2149 assert(thread_data != NULL);
2150 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2151 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2152 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2153 if (thread_data->domain_event_cb_id == -1) {
2154 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2158 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2160 virt_notif_thread_set_active(thread_data, 1);
2161 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2163 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2164 virt_notif_thread_set_active(thread_data, 0);
2165 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2166 thread_data->domain_event_cb_id = -1;
2173 /* stop event loop thread and deregister callback */
2174 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2176 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2179 if (virt_notif_thread_is_active(thread_data)) {
2180 virt_notif_thread_set_active(thread_data, 0);
2181 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2182 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2185 /* ... and de-registering event handler */
2186 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2187 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2188 thread_data->domain_event_cb_id = -1;
2192 static int persistent_domains_state_notification(void) {
2195 #ifdef HAVE_LIST_ALL_DOMAINS
2196 virDomainPtr *domains = NULL;
2197 n = virConnectListAllDomains(conn, &domains,
2198 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2200 VIRT_ERROR(conn, "reading list of persistent domains");
2203 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2204 /* Fetch each persistent domain's state and notify it */
2206 for (int i = 0; i < n; ++i) {
2207 status = get_domain_state_notify(domains[i]);
2210 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2211 virDomainGetName(domains[i]));
2213 virDomainFree(domains[i]);
2217 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2221 n = virConnectNumOfDomains(conn);
2224 /* Get list of domains. */
2225 domids = calloc(n, sizeof(*domids));
2226 if (domids == NULL) {
2227 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2230 n = virConnectListDomains(conn, domids, n);
2232 VIRT_ERROR(conn, "reading list of domains");
2236 /* Fetch info of each active domain and notify it */
2237 for (int i = 0; i < n; ++i) {
2239 virDomainPtr dom = NULL;
2240 dom = virDomainLookupByID(conn, domids[i]);
2242 VIRT_ERROR(conn, "virDomainLookupByID");
2243 /* Could be that the domain went away -- ignore it anyway. */
2246 status = virDomainGetInfo(dom, &info);
2248 /* virDomainGetState is not available. Submit 0, which corresponds to
2249 * unknown reason. */
2250 domain_state_submit_notif(dom, info.state, 0);
2252 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2264 static int lv_read(user_data_t *ud) {
2265 if (ud->data == NULL) {
2266 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2270 struct lv_read_instance *inst = ud->data;
2271 struct lv_read_state *state = &inst->read_state;
2274 if (lv_connect() < 0)
2277 /* Wait until inst#0 establish connection */
2279 DEBUG(PLUGIN_NAME " plugin#%s: Wait until inst#0 establish connection",
2287 /* Need to refresh domain or device lists? */
2288 if ((last_refresh == (time_t)0) ||
2289 ((interval > 0) && ((last_refresh + interval) <= t))) {
2290 if (refresh_lists(inst) != 0) {
2291 if (inst->id == 0) {
2292 if (!persistent_notification)
2293 stop_event_loop(¬if_thread);
2301 /* persistent domains state notifications are handled by instance 0 */
2302 if (inst->id == 0 && persistent_notification) {
2303 int status = persistent_domains_state_notification();
2305 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2306 "returned with status %i",
2311 for (int i = 0; i < state->nr_domains; ++i)
2312 DEBUG(PLUGIN_NAME " plugin: domain %s",
2313 virDomainGetName(state->domains[i].ptr));
2314 for (int i = 0; i < state->nr_block_devices; ++i)
2315 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2316 virDomainGetName(state->block_devices[i].dom),
2317 state->block_devices[i].path);
2318 for (int i = 0; i < state->nr_interface_devices; ++i)
2319 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2320 virDomainGetName(state->interface_devices[i].dom),
2321 state->interface_devices[i].path);
2324 /* Get domains' metrics */
2325 for (int i = 0; i < state->nr_domains; ++i) {
2326 domain_t *dom = &state->domains[i];
2329 status = get_domain_metrics(dom);
2330 #ifdef HAVE_DOM_REASON
2332 status = get_domain_state(dom->ptr);
2336 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2337 virDomainGetName(dom->ptr));
2340 /* Get block device stats for each domain. */
2341 for (int i = 0; i < state->nr_block_devices; ++i) {
2342 int status = get_block_device_stats(&state->block_devices[i]);
2345 " plugin: failed to get stats for block device (%s) in domain %s",
2346 state->block_devices[i].path,
2347 virDomainGetName(state->block_devices[i].dom));
2350 /* Get interface stats for each domain. */
2351 for (int i = 0; i < state->nr_interface_devices; ++i) {
2352 int status = get_if_dev_stats(&state->interface_devices[i]);
2356 " plugin: failed to get interface stats for device (%s) in domain %s",
2357 state->interface_devices[i].path,
2358 virDomainGetName(state->interface_devices[i].dom));
2364 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2365 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2366 struct lv_read_instance *inst = &(lv_ud->inst);
2368 memset(lv_ud, 0, sizeof(*lv_ud));
2370 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2373 user_data_t *ud = &(lv_ud->ud);
2375 ud->free_func = NULL;
2377 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2379 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2382 static void lv_clean_read_state(struct lv_read_state *state) {
2383 free_block_devices(state);
2384 free_interface_devices(state);
2385 free_domains(state);
2388 static void lv_fini_instance(size_t i) {
2389 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2390 struct lv_read_state *state = &(inst->read_state);
2392 lv_clean_read_state(state);
2394 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2397 static int lv_init(void) {
2398 if (virInitialize() != 0)
2401 /* Init ignorelists if there was no explicit configuration */
2402 if (lv_init_ignorelists() != 0)
2405 if (!persistent_notification)
2406 if (virt_notif_thread_init(¬if_thread) != 0)
2411 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2413 for (int i = 0; i < nr_instances; ++i)
2414 if (lv_init_instance(i, lv_read) != 0)
2421 * returns 0 on success and <0 on error
2423 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2425 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2426 xmlXPathObjectPtr xpath_obj = NULL;
2427 xmlNodePtr xml_node = NULL;
2431 err = xmlXPathRegisterNs(xpath_ctx,
2432 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2433 (const xmlChar *)METADATA_VM_PARTITION_URI);
2435 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2436 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2440 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2441 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2442 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2443 if (xpath_obj == NULL) {
2444 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2445 xpath_str, dom_name);
2449 if (xpath_obj->type != XPATH_NODESET) {
2450 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2451 "(wanted %d) on domain %s",
2452 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2457 * from now on there is no real error, it's ok if a domain
2458 * doesn't have the metadata partition tag.
2461 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2462 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2463 "expected=1 on domain %s",
2465 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2468 xml_node = xpath_obj->nodesetval->nodeTab[0];
2469 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2473 /* deregister to clean up */
2474 err = xmlXPathRegisterNs(xpath_ctx,
2475 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2477 /* we can't really recover here */
2479 " plugin: deregistration of namespace %s failed for domain %s",
2480 METADATA_VM_PARTITION_PREFIX, dom_name);
2483 xmlXPathFreeObject(xpath_obj);
2488 static int is_known_tag(const char *dom_tag) {
2489 for (int i = 0; i < nr_instances; ++i)
2490 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2495 static int lv_instance_include_domain(struct lv_read_instance *inst,
2496 const char *dom_name,
2497 const char *dom_tag) {
2498 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2501 /* instance#0 will always be there, so it is in charge of extra duties */
2502 if (inst->id == 0) {
2503 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2504 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2505 "with unknown tag '%s'",
2506 inst->tag, dom_name, dom_tag);
2514 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2515 const char *domname,
2516 xmlXPathContextPtr xpath_ctx) {
2517 xmlXPathObjectPtr xpath_obj =
2518 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2520 if (xpath_obj == NULL) {
2521 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2526 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2527 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2531 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2532 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2533 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2534 char *path_str = NULL;
2535 char *source_str = NULL;
2540 /* Fetching path and source for block device */
2541 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2542 if (child->type != XML_ELEMENT_NODE)
2545 /* we are interested only in either "target" or "source" elements */
2546 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2547 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2548 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2549 /* name of the source is located in "dev" or "file" element (it depends
2550 * on type of source). Trying "dev" at first*/
2551 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2553 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2555 /* ignoring any other element*/
2558 /* source_str will be interpreted as a device path if blockdevice_format
2559 * param is set to 'source'. */
2560 const char *device_path =
2561 (blockdevice_format == source) ? source_str : path_str;
2564 /* no path found and we can't add block_device without it */
2565 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2566 "domain %s - disk device will be ignored in reports",
2571 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2572 /* we only have to store information whether 'source' exists or not */
2573 bool has_source = (source_str != NULL) ? true : false;
2575 add_block_device(state, dom, device_path, has_source);
2583 xmlFree(source_str);
2587 xmlXPathFreeObject(xpath_obj);
2590 static void lv_add_network_interfaces(struct lv_read_state *state,
2591 virDomainPtr dom, const char *domname,
2592 xmlXPathContextPtr xpath_ctx) {
2593 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2594 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2596 if (xpath_obj == NULL)
2599 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2600 xmlXPathFreeObject(xpath_obj);
2604 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2606 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2608 char *address = NULL;
2609 const int itf_number = j + 1;
2611 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2615 for (xmlNodePtr child = xml_interface->children; child;
2616 child = child->next) {
2617 if (child->type != XML_ELEMENT_NODE)
2620 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2621 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2624 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2625 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2631 bool device_ignored = false;
2632 switch (interface_format) {
2634 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2635 device_ignored = true;
2638 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2639 device_ignored = true;
2642 char number_string[4];
2643 snprintf(number_string, sizeof(number_string), "%d", itf_number);
2644 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2646 device_ignored = true;
2649 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2653 if (!device_ignored)
2654 add_interface_device(state, dom, path, address, itf_number);
2661 xmlXPathFreeObject(xpath_obj);
2664 static bool is_domain_ignored(virDomainPtr dom) {
2665 const char *domname = virDomainGetName(dom);
2667 if (domname == NULL) {
2668 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2672 if (ignorelist_match(il_domains, domname) != 0) {
2674 " plugin: ignoring domain '%s' because of ignorelist option",
2682 static int refresh_lists(struct lv_read_instance *inst) {
2683 struct lv_read_state *state = &inst->read_state;
2686 #ifndef HAVE_LIST_ALL_DOMAINS
2687 n = virConnectNumOfDomains(conn);
2689 VIRT_ERROR(conn, "reading number of domains");
2694 lv_clean_read_state(state);
2696 #ifndef HAVE_LIST_ALL_DOMAINS
2701 #ifdef HAVE_LIST_ALL_DOMAINS
2702 virDomainPtr *domains, *domains_inactive;
2703 int m = virConnectListAllDomains(conn, &domains_inactive,
2704 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2705 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2707 /* Get list of domains. */
2708 int *domids = calloc(n, sizeof(*domids));
2709 if (domids == NULL) {
2710 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2714 n = virConnectListDomains(conn, domids, n);
2718 VIRT_ERROR(conn, "reading list of domains");
2719 #ifndef HAVE_LIST_ALL_DOMAINS
2722 for (int i = 0; i < m; ++i)
2723 virDomainFree(domains_inactive[i]);
2724 sfree(domains_inactive);
2729 #ifdef HAVE_LIST_ALL_DOMAINS
2730 for (int i = 0; i < m; ++i)
2731 if (is_domain_ignored(domains_inactive[i]) ||
2732 add_domain(state, domains_inactive[i], 0) < 0) {
2733 /* domain ignored or failed during adding to domains list*/
2734 virDomainFree(domains_inactive[i]);
2735 domains_inactive[i] = NULL;
2740 /* Fetch each domain and add it to the list, unless ignore. */
2741 for (int i = 0; i < n; ++i) {
2743 #ifdef HAVE_LIST_ALL_DOMAINS
2744 virDomainPtr dom = domains[i];
2746 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2748 VIRT_ERROR(conn, "virDomainLookupByID");
2749 /* Could be that the domain went away -- ignore it anyway. */
2754 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2756 * domain ignored or failed during adding to domains list
2758 * When domain is already tracked, then there is
2759 * no problem with memory handling (will be freed
2760 * with the rest of domains cached data)
2761 * But in case of error like this (error occurred
2762 * before adding domain to track) we have to take
2763 * care it ourselves and call virDomainFree
2769 const char *domname = virDomainGetName(dom);
2770 if (domname == NULL) {
2771 VIRT_ERROR(conn, "virDomainGetName");
2776 int status = virDomainGetInfo(dom, &info);
2778 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2783 if (info.state != VIR_DOMAIN_RUNNING) {
2784 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2788 /* Get a list of devices for this domain. */
2789 xmlDocPtr xml_doc = NULL;
2790 xmlXPathContextPtr xpath_ctx = NULL;
2792 char *xml = virDomainGetXMLDesc(dom, 0);
2794 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2798 /* Yuck, XML. Parse out the devices. */
2799 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2800 if (xml_doc == NULL) {
2801 VIRT_ERROR(conn, "xmlReadDoc");
2805 xpath_ctx = xmlXPathNewContext(xml_doc);
2807 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2808 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2809 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2813 if (!lv_instance_include_domain(inst, domname, tag))
2816 /* Block devices. */
2817 if (report_block_devices)
2818 lv_add_block_devices(state, dom, domname, xpath_ctx);
2820 /* Network interfaces. */
2821 if (report_network_interfaces)
2822 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2826 xmlXPathFreeContext(xpath_ctx);
2828 xmlFreeDoc(xml_doc);
2832 #ifdef HAVE_LIST_ALL_DOMAINS
2833 /* NOTE: domains_active and domains_inactive data will be cleared during
2834 refresh of all domains (inside lv_clean_read_state function) so we need
2835 to free here only allocated arrays */
2837 sfree(domains_inactive);
2844 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2845 " domains=%i block_devices=%i iface_devices=%i",
2846 inst->tag, state->nr_domains, state->nr_block_devices,
2847 state->nr_interface_devices);
2852 static void free_domains(struct lv_read_state *state) {
2853 if (state->domains) {
2854 for (int i = 0; i < state->nr_domains; ++i)
2855 virDomainFree(state->domains[i].ptr);
2856 sfree(state->domains);
2858 state->domains = NULL;
2859 state->nr_domains = 0;
2862 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2864 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2866 domain_t *new_ptr = realloc(state->domains, new_size);
2867 if (new_ptr == NULL) {
2868 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
2872 state->domains = new_ptr;
2873 state->domains[state->nr_domains].ptr = dom;
2874 state->domains[state->nr_domains].active = active;
2875 memset(&state->domains[state->nr_domains].info, 0,
2876 sizeof(state->domains[state->nr_domains].info));
2878 return state->nr_domains++;
2881 static void free_block_devices(struct lv_read_state *state) {
2882 if (state->block_devices) {
2883 for (int i = 0; i < state->nr_block_devices; ++i)
2884 sfree(state->block_devices[i].path);
2885 sfree(state->block_devices);
2887 state->block_devices = NULL;
2888 state->nr_block_devices = 0;
2891 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2892 const char *path, bool has_source) {
2894 char *path_copy = strdup(path);
2899 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2901 struct block_device *new_ptr = realloc(state->block_devices, new_size);
2902 if (new_ptr == NULL) {
2906 state->block_devices = new_ptr;
2907 state->block_devices[state->nr_block_devices].dom = dom;
2908 state->block_devices[state->nr_block_devices].path = path_copy;
2909 state->block_devices[state->nr_block_devices].has_source = has_source;
2910 return state->nr_block_devices++;
2913 static void free_interface_devices(struct lv_read_state *state) {
2914 if (state->interface_devices) {
2915 for (int i = 0; i < state->nr_interface_devices; ++i) {
2916 sfree(state->interface_devices[i].path);
2917 sfree(state->interface_devices[i].address);
2918 sfree(state->interface_devices[i].number);
2920 sfree(state->interface_devices);
2922 state->interface_devices = NULL;
2923 state->nr_interface_devices = 0;
2926 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2927 const char *path, const char *address,
2928 unsigned int number) {
2930 if ((path == NULL) || (address == NULL))
2933 char *path_copy = strdup(path);
2937 char *address_copy = strdup(address);
2938 if (!address_copy) {
2943 char number_string[21];
2944 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2945 char *number_copy = strdup(number_string);
2948 sfree(address_copy);
2953 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2955 struct interface_device *new_ptr =
2956 realloc(state->interface_devices, new_size);
2957 if (new_ptr == NULL) {
2959 sfree(address_copy);
2964 state->interface_devices = new_ptr;
2965 state->interface_devices[state->nr_interface_devices].dom = dom;
2966 state->interface_devices[state->nr_interface_devices].path = path_copy;
2967 state->interface_devices[state->nr_interface_devices].address = address_copy;
2968 state->interface_devices[state->nr_interface_devices].number = number_copy;
2969 return state->nr_interface_devices++;
2972 static int ignore_device_match(ignorelist_t *il, const char *domname,
2973 const char *devpath) {
2974 if ((domname == NULL) || (devpath == NULL))
2977 size_t n = strlen(domname) + strlen(devpath) + 2;
2978 char *name = malloc(n);
2980 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2983 snprintf(name, n, "%s:%s", domname, devpath);
2984 int r = ignorelist_match(il, name);
2989 static int lv_shutdown(void) {
2990 for (int i = 0; i < nr_instances; ++i) {
2991 lv_fini_instance(i);
2994 if (!persistent_notification)
2995 stop_event_loop(¬if_thread);
2999 ignorelist_free(il_domains);
3001 ignorelist_free(il_block_devices);
3002 il_block_devices = NULL;
3003 ignorelist_free(il_interface_devices);
3004 il_interface_devices = NULL;
3009 void module_register(void) {
3010 plugin_register_complex_config("virt", lv_config);
3011 plugin_register_init(PLUGIN_NAME, lv_init);
3012 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);