2 * collectd - src/virt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Richard W.M. Jones <rjones@redhat.com>
20 * Przemyslaw Szczerbik <przemyslawx.szczerbik@intel.com>
26 #include "utils/common/common.h"
27 #include "utils/ignorelist/ignorelist.h"
28 #include "utils_complain.h"
30 #include <libgen.h> /* for basename(3) */
31 #include <libvirt/libvirt.h>
32 #include <libvirt/virterror.h>
33 #include <libxml/parser.h>
34 #include <libxml/tree.h>
35 #include <libxml/xpath.h>
36 #include <libxml/xpathInternals.h>
40 #define PLUGIN_NAME "virt"
42 /* Secure strcat macro assuring null termination. Parameter (n) is the size of
43 buffer (d), allowing this macro to be safe for static and dynamic buffers */
44 #define SSTRNCAT(d, s, n) \
46 size_t _l = strlen(d); \
47 sstrncpy((d) + _l, (s), (n)-_l); \
50 #ifdef LIBVIR_CHECK_VERSION
52 #if LIBVIR_CHECK_VERSION(0, 9, 2)
53 #define HAVE_DOM_REASON 1
56 #if LIBVIR_CHECK_VERSION(0, 9, 5)
57 #define HAVE_BLOCK_STATS_FLAGS 1
58 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1
61 #if LIBVIR_CHECK_VERSION(0, 9, 10)
62 #define HAVE_DISK_ERR 1
65 #if LIBVIR_CHECK_VERSION(0, 9, 11)
66 #define HAVE_CPU_STATS 1
67 #define HAVE_DOM_STATE_PMSUSPENDED 1
68 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1
72 virConnectListAllDomains() appeared in 0.10.2 (Sep 2012)
73 Note that LIBVIR_CHECK_VERSION appeared a year later (Dec 2013,
75 so in some systems which actually have virConnectListAllDomains()
78 #if LIBVIR_CHECK_VERSION(0, 10, 2)
79 #define HAVE_LIST_ALL_DOMAINS 1
82 #if LIBVIR_CHECK_VERSION(1, 0, 1)
83 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
86 #if LIBVIR_CHECK_VERSION(1, 1, 1)
87 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
90 #if LIBVIR_CHECK_VERSION(1, 2, 9)
91 #define HAVE_JOB_STATS 1
94 #if LIBVIR_CHECK_VERSION(1, 2, 10)
95 #define HAVE_DOM_REASON_CRASHED 1
98 #if LIBVIR_CHECK_VERSION(1, 2, 11)
99 #define HAVE_FS_INFO 1
102 #if LIBVIR_CHECK_VERSION(1, 2, 15)
103 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
106 #if LIBVIR_CHECK_VERSION(1, 3, 3)
107 #define HAVE_PERF_STATS 1
108 #define HAVE_DOM_REASON_POSTCOPY 1
111 #if LIBVIR_CHECK_VERSION(4, 10, 0)
112 #define HAVE_DOM_REASON_SHUTOFF_DAEMON 1
114 #endif /* LIBVIR_CHECK_VERSION */
116 /* structure used for aggregating notification-thread data*/
117 typedef struct virt_notif_thread_s {
118 pthread_t event_loop_tid;
119 int domain_event_cb_id;
120 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
122 } virt_notif_thread_t;
124 /* PersistentNotification is false by default */
125 static bool persistent_notification = false;
127 static bool report_block_devices = true;
128 static bool report_network_interfaces = true;
130 /* Thread used for handling libvirt notifications events */
131 static virt_notif_thread_t notif_thread;
133 const char *domain_states[] = {
134 [VIR_DOMAIN_NOSTATE] = "no state",
135 [VIR_DOMAIN_RUNNING] = "the domain is running",
136 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
137 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
138 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
139 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
140 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
141 #ifdef HAVE_DOM_STATE_PMSUSPENDED
142 [VIR_DOMAIN_PMSUSPENDED] =
143 "the domain is suspended by guest power management",
147 static int map_domain_event_to_state(int event) {
150 case VIR_DOMAIN_EVENT_STARTED:
151 ret = VIR_DOMAIN_RUNNING;
153 case VIR_DOMAIN_EVENT_SUSPENDED:
154 ret = VIR_DOMAIN_PAUSED;
156 case VIR_DOMAIN_EVENT_RESUMED:
157 ret = VIR_DOMAIN_RUNNING;
159 case VIR_DOMAIN_EVENT_STOPPED:
160 ret = VIR_DOMAIN_SHUTOFF;
162 case VIR_DOMAIN_EVENT_SHUTDOWN:
163 ret = VIR_DOMAIN_SHUTDOWN;
165 #ifdef HAVE_DOM_STATE_PMSUSPENDED
166 case VIR_DOMAIN_EVENT_PMSUSPENDED:
167 ret = VIR_DOMAIN_PMSUSPENDED;
170 #ifdef HAVE_DOM_REASON_CRASHED
171 case VIR_DOMAIN_EVENT_CRASHED:
172 ret = VIR_DOMAIN_CRASHED;
176 ret = VIR_DOMAIN_NOSTATE;
181 #ifdef HAVE_DOM_REASON
182 static int map_domain_event_detail_to_reason(int event, int detail) {
185 case VIR_DOMAIN_EVENT_STARTED:
187 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
188 ret = VIR_DOMAIN_RUNNING_BOOTED;
190 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
192 ret = VIR_DOMAIN_RUNNING_MIGRATED;
194 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
195 ret = VIR_DOMAIN_RUNNING_RESTORED;
197 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
198 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
200 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
201 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
202 ret = VIR_DOMAIN_RUNNING_WAKEUP;
206 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
209 case VIR_DOMAIN_EVENT_SUSPENDED:
211 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
213 ret = VIR_DOMAIN_PAUSED_USER;
215 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
217 ret = VIR_DOMAIN_PAUSED_MIGRATION;
219 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
221 ret = VIR_DOMAIN_PAUSED_IOERROR;
223 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
225 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
227 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
229 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
231 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
233 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
235 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
237 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
239 #ifdef HAVE_DOM_REASON_POSTCOPY
240 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
242 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
244 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
246 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
250 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
253 case VIR_DOMAIN_EVENT_RESUMED:
255 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
257 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
259 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
261 ret = VIR_DOMAIN_RUNNING_MIGRATED;
263 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
264 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
266 #ifdef HAVE_DOM_REASON_POSTCOPY
267 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
268 running in post-copy mode */
269 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
273 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
276 case VIR_DOMAIN_EVENT_STOPPED:
278 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
279 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
281 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
282 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
284 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
285 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
287 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
288 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
290 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
291 ret = VIR_DOMAIN_SHUTOFF_SAVED;
293 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
294 ret = VIR_DOMAIN_SHUTOFF_FAILED;
296 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
297 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
300 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
303 case VIR_DOMAIN_EVENT_SHUTDOWN:
305 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
307 #ifdef LIBVIR_CHECK_VERSION
308 #if LIBVIR_CHECK_VERSION(3, 4, 0)
309 case VIR_DOMAIN_EVENT_SHUTDOWN_GUEST: /* Domain finished shutting down after
310 request from the guest itself (e.g.
311 hardware-specific action) */
312 case VIR_DOMAIN_EVENT_SHUTDOWN_HOST: /* Domain finished shutting down after
313 request from the host (e.g. killed
317 ret = VIR_DOMAIN_SHUTDOWN_USER;
320 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
323 #ifdef HAVE_DOM_STATE_PMSUSPENDED
324 case VIR_DOMAIN_EVENT_PMSUSPENDED:
326 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
328 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
330 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
331 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
334 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
338 case VIR_DOMAIN_EVENT_CRASHED:
340 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
341 ret = VIR_DOMAIN_CRASHED_PANICKED;
344 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
348 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
353 #define DOMAIN_STATE_REASON_MAX_SIZE 20
354 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
355 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] = "the reason is unknown",
357 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] = "the reason is unknown",
358 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
359 "normal startup from boot",
360 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
361 "migrated from another host",
362 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
363 "restored from a state file",
364 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
365 "restored from snapshot",
366 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
367 "returned from paused state",
368 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
369 "returned from migration",
370 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
371 "returned from failed save process",
372 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
373 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
374 "returned from pmsuspended due to wakeup event",
376 #ifdef HAVE_DOM_REASON_CRASHED
377 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] = "resumed from crashed",
379 #ifdef HAVE_DOM_REASON_POSTCOPY
380 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
381 "running in post-copy migration mode",
383 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] = "the reason is unknown",
385 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] = "the reason is unknown",
386 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
387 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
388 "paused for offline migration",
389 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
390 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
391 "paused for offline core dump",
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
393 "paused due to a disk I/O error",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
395 "paused due to a watchdog event",
396 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
397 "paused after restoring from snapshot",
398 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
399 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
400 "paused during shutdown process",
402 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
403 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
404 "paused while creating a snapshot",
406 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
407 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
408 "paused due to a guest crash",
410 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
411 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
412 "the domain is being started",
414 #ifdef HAVE_DOM_REASON_POSTCOPY
415 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
416 "paused for post-copy migration",
417 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
418 "paused after failed post-copy",
420 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
421 "the reason is unknown",
422 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
423 "shutting down on user request",
425 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] = "the reason is unknown",
426 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
427 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
428 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
429 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
430 "migrated to another host",
431 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
432 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] = "domain failed to start",
433 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
434 "restored from a snapshot which was taken while domain was shutoff",
435 #ifdef HAVE_DOM_REASON_SHUTOFF_DAEMON
436 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DAEMON] =
437 "daemon decides to kill domain during reconnection processing",
440 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] = "the reason is unknown",
441 #ifdef VIR_DOMAIN_CRASHED_PANICKED
442 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
445 #ifdef HAVE_DOM_STATE_PMSUSPENDED
446 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
447 "the reason is unknown",
450 #endif /* HAVE_DOM_REASON */
452 #define NANOSEC_IN_SEC 1e9
454 #define GET_STATS(_f, _name, ...) \
456 status = _f(__VA_ARGS__); \
458 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
462 static virConnectPtr conn;
463 static char *conn_string;
464 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
466 /* Node information required for %CPU */
467 static virNodeInfo nodeinfo;
469 /* Seconds between list refreshes, 0 disables completely. */
470 static int interval = 60;
472 /* List of domains, if specified. */
473 static ignorelist_t *il_domains;
474 /* List of block devices, if specified. */
475 static ignorelist_t *il_block_devices;
476 /* List of network interface devices, if specified. */
477 static ignorelist_t *il_interface_devices;
479 static int ignore_device_match(ignorelist_t *, const char *domname,
480 const char *devpath);
482 /* Actual list of block devices found on last refresh. */
483 struct block_device {
484 virDomainPtr dom; /* domain */
485 char *path; /* name of block device */
486 bool has_source; /* information whether source is defined or not */
489 /* Actual list of network interfaces found on last refresh. */
490 struct interface_device {
491 virDomainPtr dom; /* domain */
492 char *path; /* name of interface device */
493 char *address; /* mac address of interface device */
494 char *number; /* interface device number */
497 typedef struct domain_s {
503 struct lv_read_state {
504 /* Actual list of domains found on last refresh. */
508 struct block_device *block_devices;
509 int nr_block_devices;
511 struct interface_device *interface_devices;
512 int nr_interface_devices;
515 static void free_domains(struct lv_read_state *state);
516 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
519 static void free_block_devices(struct lv_read_state *state);
520 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
521 const char *path, bool has_source);
523 static void free_interface_devices(struct lv_read_state *state);
524 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
525 const char *path, const char *address,
526 unsigned int number);
528 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
529 #define METADATA_VM_PARTITION_ELEMENT "tag"
530 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
532 #define BUFFER_MAX_LEN 256
533 #define PARTITION_TAG_MAX_LEN 32
535 struct lv_read_instance {
536 struct lv_read_state read_state;
537 char tag[PARTITION_TAG_MAX_LEN];
541 struct lv_user_data {
542 struct lv_read_instance inst;
546 #define NR_INSTANCES_DEFAULT 1
547 #define NR_INSTANCES_MAX 128
548 static int nr_instances = NR_INSTANCES_DEFAULT;
549 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
551 /* HostnameFormat. */
552 #define HF_MAX_FIELDS 4
554 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
556 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
558 /* PluginInstanceFormat */
559 #define PLGINST_MAX_FIELDS 3
568 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
571 /* HostnameMetadataNS && HostnameMetadataXPath */
572 static char *hm_xpath;
575 /* BlockDeviceFormat */
576 enum bd_field { target, source };
578 /* InterfaceFormat. */
579 enum if_field { if_address, if_name, if_number };
582 #define EX_STATS_MAX_FIELDS 15
585 ex_stats_disk = 1 << 0,
586 ex_stats_pcpu = 1 << 1,
587 ex_stats_cpu_util = 1 << 2,
588 ex_stats_domain_state = 1 << 3,
589 #ifdef HAVE_PERF_STATS
590 ex_stats_perf = 1 << 4,
592 ex_stats_vcpupin = 1 << 5,
594 ex_stats_disk_err = 1 << 6,
597 ex_stats_fs_info = 1 << 7,
599 #ifdef HAVE_JOB_STATS
600 ex_stats_job_stats_completed = 1 << 8,
601 ex_stats_job_stats_background = 1 << 9,
603 ex_stats_disk_allocation = 1 << 10,
604 ex_stats_disk_capacity = 1 << 11,
605 ex_stats_disk_physical = 1 << 12
608 static unsigned int extra_stats = ex_stats_none;
610 struct ex_stats_item {
614 static const struct ex_stats_item ex_stats_table[] = {
615 {"disk", ex_stats_disk},
616 {"pcpu", ex_stats_pcpu},
617 {"cpu_util", ex_stats_cpu_util},
618 {"domain_state", ex_stats_domain_state},
619 #ifdef HAVE_PERF_STATS
620 {"perf", ex_stats_perf},
622 {"vcpupin", ex_stats_vcpupin},
624 {"disk_err", ex_stats_disk_err},
627 {"fs_info", ex_stats_fs_info},
629 #ifdef HAVE_JOB_STATS
630 {"job_stats_completed", ex_stats_job_stats_completed},
631 {"job_stats_background", ex_stats_job_stats_background},
633 {"disk_allocation", ex_stats_disk_allocation},
634 {"disk_capacity", ex_stats_disk_capacity},
635 {"disk_physical", ex_stats_disk_physical},
636 {NULL, ex_stats_none},
639 /* BlockDeviceFormatBasename */
640 static bool blockdevice_format_basename;
641 static enum bd_field blockdevice_format = target;
642 static enum if_field interface_format = if_name;
644 /* Time that we last refreshed. */
645 static time_t last_refresh = (time_t)0;
647 static int refresh_lists(struct lv_read_instance *inst);
648 static int register_event_impl(void);
649 static int start_event_loop(virt_notif_thread_t *thread_data);
651 struct lv_block_stats {
652 virDomainBlockStatsStruct bi;
654 long long rd_total_times;
655 long long wr_total_times;
658 long long fl_total_times;
661 static void init_block_stats(struct lv_block_stats *bstats) {
665 bstats->bi.rd_req = -1;
666 bstats->bi.wr_req = -1;
667 bstats->bi.rd_bytes = -1;
668 bstats->bi.wr_bytes = -1;
670 bstats->rd_total_times = -1;
671 bstats->wr_total_times = -1;
673 bstats->fl_total_times = -1;
676 static void init_block_info(virDomainBlockInfoPtr binfo) {
677 binfo->allocation = -1;
678 binfo->capacity = -1;
679 binfo->physical = -1;
682 #ifdef HAVE_BLOCK_STATS_FLAGS
684 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
685 if (!strcmp(param[i].field, NAME)) { \
686 bstats->FIELD = param[i].value.l; \
690 static int get_block_stats(struct lv_block_stats *bstats,
691 virTypedParameterPtr param, int nparams) {
692 if (bstats == NULL || param == NULL)
695 for (int i = 0; i < nparams; ++i) {
696 /* ignore type. Everything must be LLONG anyway. */
697 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
698 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
699 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
700 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
701 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
702 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
703 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
704 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
710 #undef GET_BLOCK_STATS_VALUE
712 #endif /* HAVE_BLOCK_STATS_FLAGS */
714 /* ERROR(...) macro for virterrors. */
715 #define VIRT_ERROR(conn, s) \
718 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
720 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
723 static char *metadata_get_hostname(virDomainPtr dom) {
724 const char *xpath_str = NULL;
725 if (hm_xpath == NULL)
726 xpath_str = "/instance/name/text()";
728 xpath_str = hm_xpath;
730 const char *namespace = NULL;
732 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
737 char *metadata_str = virDomainGetMetadata(
738 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
739 if (metadata_str == NULL) {
743 char *hostname = NULL;
744 xmlXPathContextPtr xpath_ctx = NULL;
745 xmlXPathObjectPtr xpath_obj = NULL;
746 xmlNodePtr xml_node = NULL;
749 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
750 if (xml_doc == NULL) {
751 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
755 xpath_ctx = xmlXPathNewContext(xml_doc);
756 if (xpath_ctx == NULL) {
757 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
761 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
762 if (xpath_obj == NULL) {
763 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
768 if (xpath_obj->type != XPATH_NODESET) {
769 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
770 "(wanted %d) for metadata",
771 xpath_str, xpath_obj->type, XPATH_NODESET);
775 // TODO(sileht): We can support || operator by looping on nodes here
776 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
777 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
778 "expected=1 for metadata",
780 (xpath_obj->nodesetval == NULL) ? 0
781 : xpath_obj->nodesetval->nodeNr);
785 xml_node = xpath_obj->nodesetval->nodeTab[0];
786 if (xml_node->type == XML_TEXT_NODE) {
787 hostname = strdup((const char *)xml_node->content);
788 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
789 hostname = strdup((const char *)xml_node->children->content);
791 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
792 xpath_str, xml_node->type);
796 if (hostname == NULL) {
797 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
803 xmlXPathFreeObject(xpath_obj);
805 xmlXPathFreeContext(xpath_ctx);
812 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
814 char uuid[VIR_UUID_STRING_BUFLEN];
816 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
820 /* Construct the hostname field according to HostnameFormat. */
821 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
822 if (hostname_format[i] == hf_none)
826 SSTRNCAT(vl->host, ":", sizeof(vl->host));
828 switch (hostname_format[i]) {
832 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
835 name = virDomainGetName(dom);
837 SSTRNCAT(vl->host, name, sizeof(vl->host));
840 if (virDomainGetUUIDString(dom, uuid) == 0)
841 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
844 name = metadata_get_hostname(dom);
846 SSTRNCAT(vl->host, name, sizeof(vl->host));
851 /* Construct the plugin instance field according to PluginInstanceFormat. */
852 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
853 if (plugin_instance_format[i] == plginst_none)
857 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
859 switch (plugin_instance_format[i]) {
863 name = virDomainGetName(dom);
865 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
868 if (virDomainGetUUIDString(dom, uuid) == 0)
869 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
871 case plginst_metadata:
872 name = metadata_get_hostname(dom);
874 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
879 } /* void init_value_list */
881 static int init_notif(notification_t *notif, const virDomainPtr domain,
882 int severity, const char *msg, const char *type,
883 const char *type_instance) {
884 value_list_t vl = VALUE_LIST_INIT;
887 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
891 init_value_list(&vl, domain);
892 notification_init(notif, severity, msg, vl.host, vl.plugin,
893 vl.plugin_instance, type, type_instance);
894 notif->time = cdtime();
898 static void submit_notif(const virDomainPtr domain, int severity,
899 const char *msg, const char *type,
900 const char *type_instance) {
901 notification_t notif;
903 init_notif(¬if, domain, severity, msg, type, type_instance);
904 plugin_dispatch_notification(¬if);
906 plugin_notification_meta_free(notif.meta);
909 static void submit(virDomainPtr dom, char const *type,
910 char const *type_instance, value_t *values,
912 value_list_t vl = VALUE_LIST_INIT;
913 init_value_list(&vl, dom);
916 vl.values_len = values_len;
918 sstrncpy(vl.type, type, sizeof(vl.type));
919 if (type_instance != NULL)
920 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
922 plugin_dispatch_values(&vl);
925 static void memory_submit(virDomainPtr dom, gauge_t value) {
926 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
929 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
931 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
932 "minor_fault", "unused", "available",
933 "actual_balloon", "rss", "usable",
934 "last_update", "disk_caches"};
936 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
937 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
941 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
944 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
945 virDomainPtr dom, const char *devname) {
951 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
952 } /* void submit_derive2 */
954 static double cpu_ns_to_percent(unsigned int node_cpus,
955 unsigned long long cpu_time_old,
956 unsigned long long cpu_time_new) {
957 double percent = 0.0;
958 unsigned long long cpu_time_diff = 0;
959 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
961 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
962 cpu_time_diff = cpu_time_new - cpu_time_old;
963 percent = ((double)(100 * cpu_time_diff)) /
964 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
967 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
968 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
969 " time_diff_sec=%f percent=%f",
970 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
971 (uint64_t)cpu_time_diff, time_diff_sec, percent);
976 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
981 if (extra_stats & ex_stats_cpu_util) {
982 /* Computing %CPU requires 2 samples of cpuTime */
983 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
985 submit(dom->ptr, "percent", "virt_cpu_total",
986 &(value_t){.gauge = cpu_ns_to_percent(
987 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
992 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
996 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
998 char type_instance[DATA_MAX_NAME_LEN];
1000 ssnprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
1001 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
1004 static void disk_block_stats_submit(struct lv_block_stats *bstats,
1005 virDomainPtr dom, const char *dev,
1006 virDomainBlockInfoPtr binfo) {
1007 char *dev_copy = strdup(dev);
1008 const char *type_instance = dev_copy;
1013 if (blockdevice_format_basename && blockdevice_format == source)
1014 type_instance = basename(dev_copy);
1016 if (!type_instance) {
1021 char flush_type_instance[DATA_MAX_NAME_LEN];
1022 ssnprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1025 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1026 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1027 (derive_t)bstats->bi.wr_req, dom, type_instance);
1029 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1030 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1031 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1033 if (extra_stats & ex_stats_disk) {
1034 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1035 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1036 (derive_t)bstats->wr_total_times, dom, type_instance);
1038 if (bstats->fl_req != -1)
1039 submit(dom, "total_requests", flush_type_instance,
1040 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1041 if (bstats->fl_total_times != -1) {
1042 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1043 submit(dom, "total_time_in_ms", flush_type_instance,
1044 &(value_t){.derive = value}, 1);
1048 /* disk_allocation, disk_capacity and disk_physical are stored only
1049 * if corresponding extrastats are set in collectd configuration file */
1050 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1051 submit(dom, "disk_allocation", type_instance,
1052 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1054 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1055 submit(dom, "disk_capacity", type_instance,
1056 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1058 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1059 submit(dom, "disk_physical", type_instance,
1060 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1066 * Function for parsing ExtraStats configuration options.
1067 * Result of parsing is stored under 'out_parsed_flags' pointer.
1069 * Returns 0 in case of success and 1 in case of parsing error
1071 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1073 unsigned int ex_stats_flags = ex_stats_none;
1075 assert(out_parsed_flags != NULL);
1077 for (int i = 0; i < numexstats; i++) {
1078 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1079 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1080 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1081 ex_stats_table[j].name);
1082 ex_stats_flags |= ex_stats_table[j].flag;
1086 if (ex_stats_table[j + 1].name == NULL) {
1087 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1094 *out_parsed_flags = ex_stats_flags;
1098 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1099 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1100 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1104 char msg[DATA_MAX_NAME_LEN];
1105 const char *state_str = domain_states[state];
1106 #ifdef HAVE_DOM_REASON
1108 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1109 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1113 const char *reason_str = domain_reasons[state][reason];
1114 /* Array size for domain reasons is fixed, but different domain states can
1115 * have different number of reasons. We need to check if reason was
1116 * successfully parsed */
1118 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1123 const char *reason_str = "N/A";
1126 ssnprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1131 case VIR_DOMAIN_NOSTATE:
1132 case VIR_DOMAIN_RUNNING:
1133 case VIR_DOMAIN_SHUTDOWN:
1134 case VIR_DOMAIN_SHUTOFF:
1135 severity = NOTIF_OKAY;
1137 case VIR_DOMAIN_BLOCKED:
1138 case VIR_DOMAIN_PAUSED:
1139 #ifdef DOM_STATE_PMSUSPENDED
1140 case VIR_DOMAIN_PMSUSPENDED:
1142 severity = NOTIF_WARNING;
1144 case VIR_DOMAIN_CRASHED:
1145 severity = NOTIF_FAILURE;
1148 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1151 submit_notif(dom, severity, msg, "domain_state", NULL);
1154 static int lv_init_ignorelists() {
1155 if (il_domains == NULL)
1156 il_domains = ignorelist_create(1);
1157 if (il_block_devices == NULL)
1158 il_block_devices = ignorelist_create(1);
1159 if (il_interface_devices == NULL)
1160 il_interface_devices = ignorelist_create(1);
1162 if (!il_domains || !il_block_devices || !il_interface_devices)
1168 /* Validates config option that may take multiple strings arguments.
1169 * Returns 0 on success, -1 otherwise */
1170 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1172 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1176 if (ci->values_num < 1) {
1178 " plugin: the '%s' option requires at least one string argument",
1183 for (int i = 0; i < ci->values_num; ++i) {
1184 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1186 " plugin: one of the '%s' options is not a valid string",
1195 static int lv_config(oconfig_item_t *ci) {
1196 if (lv_init_ignorelists() != 0) {
1197 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1201 for (int i = 0; i < ci->children_num; ++i) {
1202 oconfig_item_t *c = ci->children + i;
1204 if (strcasecmp(c->key, "Connection") == 0) {
1205 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1209 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1210 if (cf_util_get_int(c, &interval) != 0)
1214 } else if (strcasecmp(c->key, "Domain") == 0) {
1215 char *domain_name = NULL;
1216 if (cf_util_get_string(c, &domain_name) != 0)
1219 if (ignorelist_add(il_domains, domain_name)) {
1220 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1228 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1229 char *device_name = NULL;
1230 if (cf_util_get_string(c, &device_name) != 0)
1233 if (ignorelist_add(il_block_devices, device_name) != 0) {
1235 " plugin: Adding '%s' to block-device-ignorelist failed",
1243 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1244 char *device_format = NULL;
1245 if (cf_util_get_string(c, &device_format) != 0)
1248 if (strcasecmp(device_format, "target") == 0)
1249 blockdevice_format = target;
1250 else if (strcasecmp(device_format, "source") == 0)
1251 blockdevice_format = source;
1253 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1255 sfree(device_format);
1259 sfree(device_format);
1261 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1262 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1266 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1267 char *interface_name = NULL;
1268 if (cf_util_get_string(c, &interface_name) != 0)
1271 if (ignorelist_add(il_interface_devices, interface_name)) {
1272 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1274 sfree(interface_name);
1278 sfree(interface_name);
1280 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1281 bool ignore_selected = false;
1282 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1285 if (ignore_selected) {
1286 ignorelist_set_invert(il_domains, 0);
1287 ignorelist_set_invert(il_block_devices, 0);
1288 ignorelist_set_invert(il_interface_devices, 0);
1290 ignorelist_set_invert(il_domains, 1);
1291 ignorelist_set_invert(il_block_devices, 1);
1292 ignorelist_set_invert(il_interface_devices, 1);
1296 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1297 if (cf_util_get_string(c, &hm_ns) != 0)
1301 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1302 if (cf_util_get_string(c, &hm_xpath) != 0)
1306 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1307 /* this option can take multiple strings arguments in one config line*/
1308 if (check_config_multiple_string_entry(c) != 0) {
1309 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1313 const int params_num = c->values_num;
1314 for (int i = 0; i < params_num; ++i) {
1315 const char *param_name = c->values[i].value.string;
1316 if (strcasecmp(param_name, "hostname") == 0)
1317 hostname_format[i] = hf_hostname;
1318 else if (strcasecmp(param_name, "name") == 0)
1319 hostname_format[i] = hf_name;
1320 else if (strcasecmp(param_name, "uuid") == 0)
1321 hostname_format[i] = hf_uuid;
1322 else if (strcasecmp(param_name, "metadata") == 0)
1323 hostname_format[i] = hf_metadata;
1325 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1331 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1332 hostname_format[i] = hf_none;
1335 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1336 /* this option can handle list of string parameters in one line*/
1337 if (check_config_multiple_string_entry(c) != 0) {
1339 " plugin: Could not get 'PluginInstanceFormat' parameter");
1343 const int params_num = c->values_num;
1344 for (int i = 0; i < params_num; ++i) {
1345 const char *param_name = c->values[i].value.string;
1346 if (strcasecmp(param_name, "none") == 0) {
1347 plugin_instance_format[i] = plginst_none;
1349 } else if (strcasecmp(param_name, "name") == 0)
1350 plugin_instance_format[i] = plginst_name;
1351 else if (strcasecmp(param_name, "uuid") == 0)
1352 plugin_instance_format[i] = plginst_uuid;
1353 else if (strcasecmp(param_name, "metadata") == 0)
1354 plugin_instance_format[i] = plginst_metadata;
1356 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1363 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1364 plugin_instance_format[i] = plginst_none;
1367 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1368 char *format = NULL;
1369 if (cf_util_get_string(c, &format) != 0)
1372 if (strcasecmp(format, "name") == 0)
1373 interface_format = if_name;
1374 else if (strcasecmp(format, "address") == 0)
1375 interface_format = if_address;
1376 else if (strcasecmp(format, "number") == 0)
1377 interface_format = if_number;
1379 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1386 } else if (strcasecmp(c->key, "Instances") == 0) {
1387 if (cf_util_get_int(c, &nr_instances) != 0)
1390 if (nr_instances <= 0) {
1391 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1394 if (nr_instances > NR_INSTANCES_MAX) {
1395 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1396 " use a lower setting or recompile the plugin.",
1397 nr_instances, NR_INSTANCES_MAX);
1401 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1403 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1404 char *ex_str = NULL;
1406 if (cf_util_get_string(c, &ex_str) != 0)
1409 char *exstats[EX_STATS_MAX_FIELDS];
1410 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1411 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1414 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1418 #ifdef HAVE_JOB_STATS
1419 if ((extra_stats & ex_stats_job_stats_completed) &&
1420 (extra_stats & ex_stats_job_stats_background)) {
1421 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1422 "type of job statistics can be collected at the same "
1428 /* ExtraStats parsed successfully */
1430 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1431 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1435 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1436 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1440 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1441 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1446 /* Unrecognised option. */
1447 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1455 static int lv_connect(void) {
1457 /* event implementation must be registered before connection is opened */
1458 if (!persistent_notification)
1459 if (register_event_impl() != 0)
1462 /* `conn_string == NULL' is acceptable */
1464 /* virDomainGetFSInfo requires full read-write access connection */
1465 if (extra_stats & ex_stats_fs_info)
1466 conn = virConnectOpen(conn_string);
1469 conn = virConnectOpenReadOnly(conn_string);
1471 c_complain(LOG_ERR, &conn_complain,
1472 PLUGIN_NAME " plugin: Unable to connect: "
1473 "virConnectOpen failed.");
1476 int status = virNodeGetInfo(conn, &nodeinfo);
1478 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1479 virConnectClose(conn);
1484 if (!persistent_notification)
1485 if (start_event_loop(¬if_thread) != 0) {
1486 virConnectClose(conn);
1491 c_release(LOG_NOTICE, &conn_complain,
1492 PLUGIN_NAME " plugin: Connection established.");
1496 static void lv_disconnect(void) {
1498 virConnectClose(conn);
1500 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1503 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1504 struct lv_block_stats *bstats) {
1505 #ifdef HAVE_BLOCK_STATS_FLAGS
1507 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1509 VIRT_ERROR(conn, "getting the disk params count");
1513 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1514 if (params == NULL) {
1515 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1521 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1522 VIRT_ERROR(conn, "getting the disk params values");
1524 rc = get_block_stats(bstats, params, nparams);
1527 virTypedParamsClear(params, nparams);
1531 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1532 #endif /* HAVE_BLOCK_STATS_FLAGS */
1535 #ifdef HAVE_PERF_STATS
1536 static void perf_submit(virDomainStatsRecordPtr stats) {
1537 for (int i = 0; i < stats->nparams; ++i) {
1538 /* Replace '.' with '_' in event field to match other metrics' naming
1540 char *c = strchr(stats->params[i].field, '.');
1543 submit(stats->dom, "perf", stats->params[i].field,
1544 &(value_t){.derive = stats->params[i].value.ul}, 1);
1548 static int get_perf_events(virDomainPtr domain) {
1549 virDomainStatsRecordPtr *stats = NULL;
1550 /* virDomainListGetStats requires a NULL terminated list of domains */
1551 virDomainPtr domain_array[] = {domain, NULL};
1554 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1556 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1560 for (int i = 0; i < status; ++i)
1561 perf_submit(stats[i]);
1563 virDomainStatsRecordListFree(stats);
1566 #endif /* HAVE_PERF_STATS */
1568 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1569 unsigned char *cpu_maps, int cpu_map_len) {
1570 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1571 char type_instance[DATA_MAX_NAME_LEN];
1572 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1574 ssnprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu,
1576 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1580 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1581 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1582 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1584 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1585 if (vinfo == NULL) {
1586 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1590 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1591 if (cpumaps == NULL) {
1592 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1598 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1600 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1607 for (int i = 0; i < nr_virt_cpu; ++i) {
1608 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1609 if (extra_stats & ex_stats_vcpupin)
1610 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1618 #ifdef HAVE_CPU_STATS
1619 static int get_pcpu_stats(virDomainPtr dom) {
1620 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1622 VIRT_ERROR(conn, "getting the CPU params count");
1626 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1627 if (param == NULL) {
1628 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1632 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1634 virTypedParamsClear(param, nparams);
1636 VIRT_ERROR(conn, "getting the CPU params values");
1640 unsigned long long total_user_cpu_time = 0;
1641 unsigned long long total_syst_cpu_time = 0;
1643 for (int i = 0; i < nparams; ++i) {
1644 if (!strcmp(param[i].field, "user_time"))
1645 total_user_cpu_time = param[i].value.ul;
1646 else if (!strcmp(param[i].field, "system_time"))
1647 total_syst_cpu_time = param[i].value.ul;
1650 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1651 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1654 virTypedParamsClear(param, nparams);
1659 #endif /* HAVE_CPU_STATS */
1661 #ifdef HAVE_DOM_REASON
1662 static int submit_domain_state(virDomainPtr domain) {
1663 int domain_state = 0;
1664 int domain_reason = 0;
1666 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1668 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1673 value_t values[] = {
1674 {.gauge = (gauge_t)domain_state},
1675 {.gauge = (gauge_t)domain_reason},
1678 submit(domain, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1683 #ifdef HAVE_LIST_ALL_DOMAINS
1684 static int get_domain_state_notify(virDomainPtr domain) {
1685 int domain_state = 0;
1686 int domain_reason = 0;
1688 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1690 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1695 domain_state_submit_notif(domain, domain_state, domain_reason);
1699 #endif /* HAVE_LIST_ALL_DOMAINS */
1700 #endif /* HAVE_DOM_REASON */
1702 static int get_memory_stats(virDomainPtr domain) {
1703 virDomainMemoryStatPtr minfo =
1704 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1705 if (minfo == NULL) {
1706 ERROR("virt plugin: calloc failed.");
1711 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1712 if (mem_stats < 0) {
1713 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1719 derive_t swap_in = -1;
1720 derive_t swap_out = -1;
1721 derive_t min_flt = -1;
1722 derive_t maj_flt = -1;
1724 for (int i = 0; i < mem_stats; i++) {
1725 if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN)
1726 swap_in = minfo[i].val;
1727 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT)
1728 swap_out = minfo[i].val;
1729 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT)
1730 min_flt = minfo[i].val;
1731 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT)
1732 maj_flt = minfo[i].val;
1733 #ifdef LIBVIR_CHECK_VERSION
1734 #if LIBVIR_CHECK_VERSION(2, 1, 0)
1735 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE)
1736 /* Skip 'last_update' reporting as that is not memory but timestamp */
1741 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1744 if (swap_in > 0 || swap_out > 0) {
1745 submit(domain, "swap_io", "in", &(value_t){.gauge = swap_in}, 1);
1746 submit(domain, "swap_io", "out", &(value_t){.gauge = swap_out}, 1);
1749 if (min_flt > 0 || maj_flt > 0) {
1750 value_t values[] = {
1751 {.gauge = (gauge_t)min_flt},
1752 {.gauge = (gauge_t)maj_flt},
1754 submit(domain, "ps_pagefaults", NULL, values, STATIC_ARRAY_SIZE(values));
1761 #ifdef HAVE_DISK_ERR
1762 static void disk_err_submit(virDomainPtr domain,
1763 virDomainDiskErrorPtr disk_err) {
1764 submit(domain, "disk_error", disk_err->disk,
1765 &(value_t){.gauge = disk_err->error}, 1);
1768 static int get_disk_err(virDomainPtr domain) {
1769 /* Get preferred size of disk errors array */
1770 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1771 if (disk_err_count == -1) {
1773 " plugin: failed to get preferred size of disk errors array");
1778 " plugin: preferred size of disk errors array: %d for domain %s",
1779 disk_err_count, virDomainGetName(domain));
1780 virDomainDiskError disk_err[disk_err_count];
1782 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1783 if (disk_err_count == -1) {
1784 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1789 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1790 disk_err_count, virDomainGetName(domain));
1792 for (int i = 0; i < disk_err_count; ++i) {
1793 disk_err_submit(domain, &disk_err[i]);
1794 sfree(disk_err[i].disk);
1799 #endif /* HAVE_DISK_ERR */
1801 static int get_block_device_stats(struct block_device *block_dev) {
1803 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1807 virDomainBlockInfo binfo;
1808 init_block_info(&binfo);
1810 /* Fetching block info stats only if needed*/
1811 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1812 ex_stats_disk_physical)) {
1813 /* Block info statistics can be only fetched from devices with 'source'
1815 if (block_dev->has_source) {
1816 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1818 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1825 struct lv_block_stats bstats;
1826 init_block_stats(&bstats);
1828 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1829 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1833 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1839 #define NM_ADD_ITEM(_fun, _name, _val) \
1841 ret = _fun(¬if, _name, _val); \
1843 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1848 #define NM_ADD_STR_ITEMS(_items, _size) \
1850 for (size_t _i = 0; _i < _size; ++_i) { \
1852 " plugin: Adding notification metadata name=%s value=%s", \
1853 _items[_i].name, _items[_i].value); \
1854 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1855 _items[_i].value); \
1859 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1860 notification_t notif;
1863 /* Local struct, just for the purpose of this function. */
1864 typedef struct nm_str_item_s {
1869 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1870 nm_str_item_t fs_str_items[] = {
1871 {.name = "mountpoint", .value = fs_info->mountpoint},
1872 {.name = "name", .value = fs_info->name},
1873 {.name = "fstype", .value = fs_info->fstype}};
1875 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1876 fs_dev_alias[i].name = "devAlias";
1877 fs_dev_alias[i].value = fs_info->devAlias[i];
1880 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1881 "file_system", NULL);
1882 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1883 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1884 fs_info->ndevAlias);
1885 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1887 plugin_dispatch_notification(¬if);
1891 plugin_notification_meta_free(notif.meta);
1895 #undef RETURN_ON_ERR
1896 #undef NM_ADD_STR_ITEMS
1898 static int get_fs_info(virDomainPtr domain) {
1899 virDomainFSInfoPtr *fs_info = NULL;
1902 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1903 if (mount_points_cnt == -1) {
1904 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1906 return mount_points_cnt;
1909 for (int i = 0; i < mount_points_cnt; ++i) {
1910 if (fs_info_notify(domain, fs_info[i]) != 0) {
1911 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1912 "for mount point %s",
1913 fs_info[i]->mountpoint);
1916 virDomainFSInfoFree(fs_info[i]);
1923 #endif /* HAVE_FS_INFO */
1925 #ifdef HAVE_JOB_STATS
1926 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1929 if (param->type == VIR_TYPED_PARAM_INT)
1930 vl.derive = param->value.i;
1931 else if (param->type == VIR_TYPED_PARAM_UINT)
1932 vl.derive = param->value.ui;
1933 else if (param->type == VIR_TYPED_PARAM_LLONG)
1934 vl.derive = param->value.l;
1935 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1936 vl.derive = param->value.ul;
1937 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1938 vl.derive = param->value.d;
1939 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1940 vl.derive = param->value.b;
1941 else if (param->type == VIR_TYPED_PARAM_STRING) {
1942 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1945 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1949 submit(domain, "job_stats", param->field, &vl, 1);
1952 static int get_job_stats(virDomainPtr domain) {
1956 virTypedParameterPtr params = NULL;
1957 int flags = (extra_stats & ex_stats_job_stats_completed)
1958 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1961 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1963 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1967 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1969 for (int i = 0; i < nparams; ++i) {
1970 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1972 job_stats_submit(domain, ¶ms[i]);
1975 virTypedParamsFree(params, nparams);
1978 #endif /* HAVE_JOB_STATS */
1980 static int get_domain_metrics(domain_t *domain) {
1981 if (!domain || !domain->ptr) {
1982 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
1987 int status = virDomainGetInfo(domain->ptr, &info);
1989 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1994 if (extra_stats & ex_stats_domain_state) {
1995 #ifdef HAVE_DOM_REASON
1996 /* At this point we already know domain's state from virDomainGetInfo call,
1997 * however it doesn't provide a reason for entering particular state.
1998 * We need to get it from virDomainGetState.
2000 GET_STATS(submit_domain_state, "domain reason", domain->ptr);
2004 /* Gather remaining stats only for running domains */
2005 if (info.state != VIR_DOMAIN_RUNNING)
2008 #ifdef HAVE_CPU_STATS
2009 if (extra_stats & ex_stats_pcpu)
2010 get_pcpu_stats(domain->ptr);
2013 cpu_submit(domain, info.cpuTime);
2015 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
2017 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
2018 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
2020 #ifdef HAVE_PERF_STATS
2021 if (extra_stats & ex_stats_perf)
2022 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
2026 if (extra_stats & ex_stats_fs_info)
2027 GET_STATS(get_fs_info, "file system info", domain->ptr);
2030 #ifdef HAVE_DISK_ERR
2031 if (extra_stats & ex_stats_disk_err)
2032 GET_STATS(get_disk_err, "disk errors", domain->ptr);
2035 #ifdef HAVE_JOB_STATS
2037 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
2038 GET_STATS(get_job_stats, "job stats", domain->ptr);
2041 /* Update cached virDomainInfo. It has to be done after cpu_submit */
2042 memcpy(&domain->info, &info, sizeof(domain->info));
2047 static int get_if_dev_stats(struct interface_device *if_dev) {
2048 virDomainInterfaceStatsStruct stats = {0};
2049 char *display_name = NULL;
2052 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
2056 switch (interface_format) {
2058 display_name = if_dev->address;
2061 display_name = if_dev->number;
2065 display_name = if_dev->path;
2068 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2069 sizeof(stats)) != 0) {
2070 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2074 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2075 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2076 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2078 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2079 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2080 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2082 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2083 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2084 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2086 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2087 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2088 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2092 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2093 virDomainPtr dom, int event, int detail,
2094 __attribute__((unused)) void *opaque) {
2095 int domain_state = map_domain_event_to_state(event);
2096 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2097 #ifdef HAVE_DOM_REASON
2098 domain_reason = map_domain_event_detail_to_reason(event, detail);
2100 domain_state_submit_notif(dom, domain_state, domain_reason);
2105 static int register_event_impl(void) {
2106 if (virEventRegisterDefaultImpl() < 0) {
2107 virErrorPtr err = virGetLastError();
2109 " plugin: error while event implementation registering: %s",
2110 err && err->message ? err->message : "Unknown error");
2117 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2118 const bool active) {
2119 assert(thread_data != NULL);
2120 pthread_mutex_lock(&thread_data->active_mutex);
2121 thread_data->is_active = active;
2122 pthread_mutex_unlock(&thread_data->active_mutex);
2125 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2126 bool active = false;
2128 assert(thread_data != NULL);
2129 pthread_mutex_lock(&thread_data->active_mutex);
2130 active = thread_data->is_active;
2131 pthread_mutex_unlock(&thread_data->active_mutex);
2136 /* worker function running default event implementation */
2137 static void *event_loop_worker(void *arg) {
2138 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2140 while (virt_notif_thread_is_active(thread_data)) {
2141 if (virEventRunDefaultImpl() < 0) {
2142 virErrorPtr err = virGetLastError();
2143 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2144 err && err->message ? err->message : "Unknown error");
2151 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2152 assert(thread_data != NULL);
2154 int ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2156 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2161 * '0' and positive integers are meaningful ID's, therefore setting
2162 * domain_event_cb_id to '-1'
2164 thread_data->domain_event_cb_id = -1;
2165 pthread_mutex_lock(&thread_data->active_mutex);
2166 thread_data->is_active = false;
2167 pthread_mutex_unlock(&thread_data->active_mutex);
2172 /* register domain event callback and start event loop thread */
2173 static int start_event_loop(virt_notif_thread_t *thread_data) {
2174 assert(thread_data != NULL);
2175 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2176 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2177 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2178 if (thread_data->domain_event_cb_id == -1) {
2179 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2183 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2185 virt_notif_thread_set_active(thread_data, 1);
2186 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2188 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2189 virt_notif_thread_set_active(thread_data, 0);
2190 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2191 thread_data->domain_event_cb_id = -1;
2198 /* stop event loop thread and deregister callback */
2199 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2201 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2204 if (virt_notif_thread_is_active(thread_data)) {
2205 virt_notif_thread_set_active(thread_data, 0);
2206 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2207 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2210 /* ... and de-registering event handler */
2211 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2212 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2213 thread_data->domain_event_cb_id = -1;
2217 static int persistent_domains_state_notification(void) {
2220 #ifdef HAVE_LIST_ALL_DOMAINS
2221 virDomainPtr *domains = NULL;
2222 n = virConnectListAllDomains(conn, &domains,
2223 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2225 VIRT_ERROR(conn, "reading list of persistent domains");
2228 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2229 /* Fetch each persistent domain's state and notify it */
2231 for (int i = 0; i < n; ++i) {
2232 status = get_domain_state_notify(domains[i]);
2235 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2236 virDomainGetName(domains[i]));
2238 virDomainFree(domains[i]);
2242 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2246 n = virConnectNumOfDomains(conn);
2249 /* Get list of domains. */
2250 domids = calloc(n, sizeof(*domids));
2251 if (domids == NULL) {
2252 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2255 n = virConnectListDomains(conn, domids, n);
2257 VIRT_ERROR(conn, "reading list of domains");
2261 /* Fetch info of each active domain and notify it */
2262 for (int i = 0; i < n; ++i) {
2264 virDomainPtr dom = NULL;
2265 dom = virDomainLookupByID(conn, domids[i]);
2267 VIRT_ERROR(conn, "virDomainLookupByID");
2268 /* Could be that the domain went away -- ignore it anyway. */
2271 status = virDomainGetInfo(dom, &info);
2273 /* virDomainGetState is not available. Submit 0, which corresponds to
2274 * unknown reason. */
2275 domain_state_submit_notif(dom, info.state, 0);
2277 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2289 static int lv_read(user_data_t *ud) {
2290 if (ud->data == NULL) {
2291 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2295 struct lv_read_instance *inst = ud->data;
2296 struct lv_read_state *state = &inst->read_state;
2299 if (lv_connect() < 0)
2302 /* Wait until inst#0 establish connection */
2304 DEBUG(PLUGIN_NAME " plugin#%s: Wait until inst#0 establish connection",
2312 /* Need to refresh domain or device lists? */
2313 if ((last_refresh == (time_t)0) ||
2314 ((interval > 0) && ((last_refresh + interval) <= t))) {
2315 if (refresh_lists(inst) != 0) {
2316 if (inst->id == 0) {
2317 if (!persistent_notification)
2318 stop_event_loop(¬if_thread);
2326 /* persistent domains state notifications are handled by instance 0 */
2327 if (inst->id == 0 && persistent_notification) {
2328 int status = persistent_domains_state_notification();
2330 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2331 "returned with status %i",
2336 for (int i = 0; i < state->nr_domains; ++i)
2337 DEBUG(PLUGIN_NAME " plugin: domain %s",
2338 virDomainGetName(state->domains[i].ptr));
2339 for (int i = 0; i < state->nr_block_devices; ++i)
2340 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2341 virDomainGetName(state->block_devices[i].dom),
2342 state->block_devices[i].path);
2343 for (int i = 0; i < state->nr_interface_devices; ++i)
2344 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2345 virDomainGetName(state->interface_devices[i].dom),
2346 state->interface_devices[i].path);
2349 /* Get domains' metrics */
2350 for (int i = 0; i < state->nr_domains; ++i) {
2351 domain_t *dom = &state->domains[i];
2354 status = get_domain_metrics(dom);
2355 #ifdef HAVE_DOM_REASON
2356 else if (extra_stats & ex_stats_domain_state)
2357 status = submit_domain_state(dom->ptr);
2361 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2362 virDomainGetName(dom->ptr));
2365 /* Get block device stats for each domain. */
2366 for (int i = 0; i < state->nr_block_devices; ++i) {
2367 int status = get_block_device_stats(&state->block_devices[i]);
2370 " plugin: failed to get stats for block device (%s) in domain %s",
2371 state->block_devices[i].path,
2372 virDomainGetName(state->block_devices[i].dom));
2375 /* Get interface stats for each domain. */
2376 for (int i = 0; i < state->nr_interface_devices; ++i) {
2377 int status = get_if_dev_stats(&state->interface_devices[i]);
2381 " plugin: failed to get interface stats for device (%s) in domain %s",
2382 state->interface_devices[i].path,
2383 virDomainGetName(state->interface_devices[i].dom));
2389 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2390 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2391 struct lv_read_instance *inst = &(lv_ud->inst);
2393 memset(lv_ud, 0, sizeof(*lv_ud));
2395 ssnprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2398 user_data_t *ud = &(lv_ud->ud);
2400 ud->free_func = NULL;
2402 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2404 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2407 static void lv_clean_read_state(struct lv_read_state *state) {
2408 free_block_devices(state);
2409 free_interface_devices(state);
2410 free_domains(state);
2413 static void lv_fini_instance(size_t i) {
2414 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2415 struct lv_read_state *state = &(inst->read_state);
2417 lv_clean_read_state(state);
2419 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2422 static int lv_init(void) {
2423 if (virInitialize() != 0)
2426 /* Init ignorelists if there was no explicit configuration */
2427 if (lv_init_ignorelists() != 0)
2430 if (!persistent_notification)
2431 if (virt_notif_thread_init(¬if_thread) != 0)
2436 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2438 for (int i = 0; i < nr_instances; ++i)
2439 if (lv_init_instance(i, lv_read) != 0)
2446 * returns 0 on success and <0 on error
2448 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2450 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2451 xmlXPathObjectPtr xpath_obj = NULL;
2452 xmlNodePtr xml_node = NULL;
2456 err = xmlXPathRegisterNs(xpath_ctx,
2457 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2458 (const xmlChar *)METADATA_VM_PARTITION_URI);
2460 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2461 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2465 ssnprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2466 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2467 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2468 if (xpath_obj == NULL) {
2469 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2470 xpath_str, dom_name);
2474 if (xpath_obj->type != XPATH_NODESET) {
2475 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2476 "(wanted %d) on domain %s",
2477 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2482 * from now on there is no real error, it's ok if a domain
2483 * doesn't have the metadata partition tag.
2486 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2487 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2488 "expected=1 on domain %s",
2490 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2493 xml_node = xpath_obj->nodesetval->nodeTab[0];
2494 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2498 /* deregister to clean up */
2499 err = xmlXPathRegisterNs(xpath_ctx,
2500 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2502 /* we can't really recover here */
2504 " plugin: deregistration of namespace %s failed for domain %s",
2505 METADATA_VM_PARTITION_PREFIX, dom_name);
2508 xmlXPathFreeObject(xpath_obj);
2513 static int is_known_tag(const char *dom_tag) {
2514 for (int i = 0; i < nr_instances; ++i)
2515 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2520 static int lv_instance_include_domain(struct lv_read_instance *inst,
2521 const char *dom_name,
2522 const char *dom_tag) {
2523 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2526 /* instance#0 will always be there, so it is in charge of extra duties */
2527 if (inst->id == 0) {
2528 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2529 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2530 "with unknown tag '%s'",
2531 inst->tag, dom_name, dom_tag);
2539 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2540 const char *domname,
2541 xmlXPathContextPtr xpath_ctx) {
2542 xmlXPathObjectPtr xpath_obj =
2543 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2545 if (xpath_obj == NULL) {
2546 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2551 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2552 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2556 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2557 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2558 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2559 char *path_str = NULL;
2560 char *source_str = NULL;
2565 /* Fetching path and source for block device */
2566 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2567 if (child->type != XML_ELEMENT_NODE)
2570 /* we are interested only in either "target" or "source" elements */
2571 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2572 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2573 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2574 /* name of the source is located in "dev" or "file" element (it depends
2575 * on type of source). Trying "dev" at first*/
2576 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2578 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2580 /* ignoring any other element*/
2583 /* source_str will be interpreted as a device path if blockdevice_format
2584 * param is set to 'source'. */
2585 const char *device_path =
2586 (blockdevice_format == source) ? source_str : path_str;
2589 /* no path found and we can't add block_device without it */
2590 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2591 "domain %s - disk device will be ignored in reports",
2596 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2597 /* we only have to store information whether 'source' exists or not */
2598 bool has_source = (source_str != NULL) ? true : false;
2600 add_block_device(state, dom, device_path, has_source);
2608 xmlFree(source_str);
2612 xmlXPathFreeObject(xpath_obj);
2615 static void lv_add_network_interfaces(struct lv_read_state *state,
2616 virDomainPtr dom, const char *domname,
2617 xmlXPathContextPtr xpath_ctx) {
2618 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2619 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2621 if (xpath_obj == NULL)
2624 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2625 xmlXPathFreeObject(xpath_obj);
2629 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2631 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2633 char *address = NULL;
2634 const int itf_number = j + 1;
2636 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2640 for (xmlNodePtr child = xml_interface->children; child;
2641 child = child->next) {
2642 if (child->type != XML_ELEMENT_NODE)
2645 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2646 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2649 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2650 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2656 bool device_ignored = false;
2657 switch (interface_format) {
2659 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2660 device_ignored = true;
2663 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2664 device_ignored = true;
2667 char number_string[4];
2668 ssnprintf(number_string, sizeof(number_string), "%d", itf_number);
2669 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2671 device_ignored = true;
2674 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2678 if (!device_ignored)
2679 add_interface_device(state, dom, path, address, itf_number);
2686 xmlXPathFreeObject(xpath_obj);
2689 static bool is_domain_ignored(virDomainPtr dom) {
2690 const char *domname = virDomainGetName(dom);
2692 if (domname == NULL) {
2693 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2697 if (ignorelist_match(il_domains, domname) != 0) {
2699 " plugin: ignoring domain '%s' because of ignorelist option",
2707 static int refresh_lists(struct lv_read_instance *inst) {
2708 struct lv_read_state *state = &inst->read_state;
2711 #ifndef HAVE_LIST_ALL_DOMAINS
2712 n = virConnectNumOfDomains(conn);
2714 VIRT_ERROR(conn, "reading number of domains");
2719 lv_clean_read_state(state);
2721 #ifndef HAVE_LIST_ALL_DOMAINS
2726 #ifdef HAVE_LIST_ALL_DOMAINS
2727 virDomainPtr *domains, *domains_inactive;
2728 int m = virConnectListAllDomains(conn, &domains_inactive,
2729 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2730 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2732 /* Get list of domains. */
2733 int *domids = calloc(n, sizeof(*domids));
2734 if (domids == NULL) {
2735 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2739 n = virConnectListDomains(conn, domids, n);
2743 VIRT_ERROR(conn, "reading list of domains");
2744 #ifndef HAVE_LIST_ALL_DOMAINS
2747 for (int i = 0; i < m; ++i)
2748 virDomainFree(domains_inactive[i]);
2749 sfree(domains_inactive);
2754 #ifdef HAVE_LIST_ALL_DOMAINS
2755 for (int i = 0; i < m; ++i)
2756 if (is_domain_ignored(domains_inactive[i]) ||
2757 add_domain(state, domains_inactive[i], 0) < 0) {
2758 /* domain ignored or failed during adding to domains list*/
2759 virDomainFree(domains_inactive[i]);
2760 domains_inactive[i] = NULL;
2765 /* Fetch each domain and add it to the list, unless ignore. */
2766 for (int i = 0; i < n; ++i) {
2768 #ifdef HAVE_LIST_ALL_DOMAINS
2769 virDomainPtr dom = domains[i];
2771 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2773 VIRT_ERROR(conn, "virDomainLookupByID");
2774 /* Could be that the domain went away -- ignore it anyway. */
2779 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2781 * domain ignored or failed during adding to domains list
2783 * When domain is already tracked, then there is
2784 * no problem with memory handling (will be freed
2785 * with the rest of domains cached data)
2786 * But in case of error like this (error occurred
2787 * before adding domain to track) we have to take
2788 * care it ourselves and call virDomainFree
2794 const char *domname = virDomainGetName(dom);
2795 if (domname == NULL) {
2796 VIRT_ERROR(conn, "virDomainGetName");
2801 int status = virDomainGetInfo(dom, &info);
2803 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2808 if (info.state != VIR_DOMAIN_RUNNING) {
2809 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2813 /* Get a list of devices for this domain. */
2814 xmlDocPtr xml_doc = NULL;
2815 xmlXPathContextPtr xpath_ctx = NULL;
2817 char *xml = virDomainGetXMLDesc(dom, 0);
2819 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2823 /* Yuck, XML. Parse out the devices. */
2824 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2825 if (xml_doc == NULL) {
2826 VIRT_ERROR(conn, "xmlReadDoc");
2830 xpath_ctx = xmlXPathNewContext(xml_doc);
2832 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2833 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2834 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2838 if (!lv_instance_include_domain(inst, domname, tag))
2841 /* Block devices. */
2842 if (report_block_devices)
2843 lv_add_block_devices(state, dom, domname, xpath_ctx);
2845 /* Network interfaces. */
2846 if (report_network_interfaces)
2847 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2851 xmlXPathFreeContext(xpath_ctx);
2853 xmlFreeDoc(xml_doc);
2857 #ifdef HAVE_LIST_ALL_DOMAINS
2858 /* NOTE: domains_active and domains_inactive data will be cleared during
2859 refresh of all domains (inside lv_clean_read_state function) so we need
2860 to free here only allocated arrays */
2862 sfree(domains_inactive);
2869 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2870 " domains=%i block_devices=%i iface_devices=%i",
2871 inst->tag, state->nr_domains, state->nr_block_devices,
2872 state->nr_interface_devices);
2877 static void free_domains(struct lv_read_state *state) {
2878 if (state->domains) {
2879 for (int i = 0; i < state->nr_domains; ++i)
2880 virDomainFree(state->domains[i].ptr);
2881 sfree(state->domains);
2883 state->domains = NULL;
2884 state->nr_domains = 0;
2887 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2889 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2891 domain_t *new_ptr = realloc(state->domains, new_size);
2892 if (new_ptr == NULL) {
2893 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
2897 state->domains = new_ptr;
2898 state->domains[state->nr_domains].ptr = dom;
2899 state->domains[state->nr_domains].active = active;
2900 memset(&state->domains[state->nr_domains].info, 0,
2901 sizeof(state->domains[state->nr_domains].info));
2903 return state->nr_domains++;
2906 static void free_block_devices(struct lv_read_state *state) {
2907 if (state->block_devices) {
2908 for (int i = 0; i < state->nr_block_devices; ++i)
2909 sfree(state->block_devices[i].path);
2910 sfree(state->block_devices);
2912 state->block_devices = NULL;
2913 state->nr_block_devices = 0;
2916 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2917 const char *path, bool has_source) {
2919 char *path_copy = strdup(path);
2924 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2926 struct block_device *new_ptr = realloc(state->block_devices, new_size);
2927 if (new_ptr == NULL) {
2931 state->block_devices = new_ptr;
2932 state->block_devices[state->nr_block_devices].dom = dom;
2933 state->block_devices[state->nr_block_devices].path = path_copy;
2934 state->block_devices[state->nr_block_devices].has_source = has_source;
2935 return state->nr_block_devices++;
2938 static void free_interface_devices(struct lv_read_state *state) {
2939 if (state->interface_devices) {
2940 for (int i = 0; i < state->nr_interface_devices; ++i) {
2941 sfree(state->interface_devices[i].path);
2942 sfree(state->interface_devices[i].address);
2943 sfree(state->interface_devices[i].number);
2945 sfree(state->interface_devices);
2947 state->interface_devices = NULL;
2948 state->nr_interface_devices = 0;
2951 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2952 const char *path, const char *address,
2953 unsigned int number) {
2955 if ((path == NULL) || (address == NULL))
2958 char *path_copy = strdup(path);
2962 char *address_copy = strdup(address);
2963 if (!address_copy) {
2968 char number_string[21];
2969 ssnprintf(number_string, sizeof(number_string), "interface-%u", number);
2970 char *number_copy = strdup(number_string);
2973 sfree(address_copy);
2978 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2980 struct interface_device *new_ptr =
2981 realloc(state->interface_devices, new_size);
2982 if (new_ptr == NULL) {
2984 sfree(address_copy);
2989 state->interface_devices = new_ptr;
2990 state->interface_devices[state->nr_interface_devices].dom = dom;
2991 state->interface_devices[state->nr_interface_devices].path = path_copy;
2992 state->interface_devices[state->nr_interface_devices].address = address_copy;
2993 state->interface_devices[state->nr_interface_devices].number = number_copy;
2994 return state->nr_interface_devices++;
2997 static int ignore_device_match(ignorelist_t *il, const char *domname,
2998 const char *devpath) {
2999 if ((domname == NULL) || (devpath == NULL))
3002 size_t n = strlen(domname) + strlen(devpath) + 2;
3003 char *name = malloc(n);
3005 ERROR(PLUGIN_NAME " plugin: malloc failed.");
3008 ssnprintf(name, n, "%s:%s", domname, devpath);
3009 int r = ignorelist_match(il, name);
3014 static int lv_shutdown(void) {
3015 for (int i = 0; i < nr_instances; ++i) {
3016 lv_fini_instance(i);
3019 if (!persistent_notification)
3020 stop_event_loop(¬if_thread);
3024 ignorelist_free(il_domains);
3026 ignorelist_free(il_block_devices);
3027 il_block_devices = NULL;
3028 ignorelist_free(il_interface_devices);
3029 il_interface_devices = NULL;
3034 void module_register(void) {
3035 plugin_register_complex_config("virt", lv_config);
3036 plugin_register_init(PLUGIN_NAME, lv_init);
3037 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);