2 * collectd - src/virt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Richard W.M. Jones <rjones@redhat.com>
20 * Przemyslaw Szczerbik <przemyslawx.szczerbik@intel.com>
27 #include "utils_complain.h"
28 #include "utils_ignorelist.h"
30 #include <libgen.h> /* for basename(3) */
31 #include <libvirt/libvirt.h>
32 #include <libvirt/virterror.h>
33 #include <libxml/parser.h>
34 #include <libxml/tree.h>
35 #include <libxml/xpath.h>
36 #include <libxml/xpathInternals.h>
39 #define PLUGIN_NAME "virt"
41 /* Secure strcat macro assuring null termination. Parameter (n) is the size of
42 buffer (d), allowing this macro to be safe for static and dynamic buffers */
43 #define SSTRNCAT(d, s, n) \
45 size_t _l = strlen(d); \
46 sstrncpy((d) + _l, (s), (n)-_l); \
49 #ifdef LIBVIR_CHECK_VERSION
51 #if LIBVIR_CHECK_VERSION(0, 9, 2)
52 #define HAVE_DOM_REASON 1
55 #if LIBVIR_CHECK_VERSION(0, 9, 5)
56 #define HAVE_BLOCK_STATS_FLAGS 1
57 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1
60 #if LIBVIR_CHECK_VERSION(0, 9, 10)
61 #define HAVE_DISK_ERR 1
64 #if LIBVIR_CHECK_VERSION(0, 9, 11)
65 #define HAVE_CPU_STATS 1
66 #define HAVE_DOM_STATE_PMSUSPENDED 1
67 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1
71 virConnectListAllDomains() appeared in 0.10.2
72 Note that LIBVIR_CHECK_VERSION appeared a year later, so
73 in some systems which actually have virConnectListAllDomains()
76 #if LIBVIR_CHECK_VERSION(0, 10, 2)
77 #define HAVE_LIST_ALL_DOMAINS 1
80 #if LIBVIR_CHECK_VERSION(1, 0, 1)
81 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
84 #if LIBVIR_CHECK_VERSION(1, 1, 1)
85 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
88 #if LIBVIR_CHECK_VERSION(1, 2, 9)
89 #define HAVE_JOB_STATS 1
92 #if LIBVIR_CHECK_VERSION(1, 2, 10)
93 #define HAVE_DOM_REASON_CRASHED 1
96 #if LIBVIR_CHECK_VERSION(1, 2, 11)
97 #define HAVE_FS_INFO 1
100 #if LIBVIR_CHECK_VERSION(1, 2, 15)
101 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
104 #if LIBVIR_CHECK_VERSION(1, 3, 3)
105 #define HAVE_PERF_STATS 1
106 #define HAVE_DOM_REASON_POSTCOPY 1
109 #endif /* LIBVIR_CHECK_VERSION */
111 /* structure used for aggregating notification-thread data*/
112 typedef struct virt_notif_thread_s {
113 pthread_t event_loop_tid;
114 int domain_event_cb_id;
115 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
117 } virt_notif_thread_t;
119 static const char *config_keys[] = {"Connection",
126 "BlockDeviceFormatBasename",
133 "PluginInstanceFormat",
137 "PersistentNotification",
140 /* PersistentNotification is false by default */
141 static _Bool persistent_notification = 0;
143 /* Thread used for handling libvirt notifications events */
144 static virt_notif_thread_t notif_thread;
146 const char *domain_states[] = {
147 [VIR_DOMAIN_NOSTATE] = "no state",
148 [VIR_DOMAIN_RUNNING] = "the domain is running",
149 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
150 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
151 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
152 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
153 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
154 #ifdef HAVE_DOM_STATE_PMSUSPENDED
155 [VIR_DOMAIN_PMSUSPENDED] =
156 "the domain is suspended by guest power management",
160 static int map_domain_event_to_state(int event) {
163 case VIR_DOMAIN_EVENT_STARTED:
164 ret = VIR_DOMAIN_RUNNING;
166 case VIR_DOMAIN_EVENT_SUSPENDED:
167 ret = VIR_DOMAIN_PAUSED;
169 case VIR_DOMAIN_EVENT_RESUMED:
170 ret = VIR_DOMAIN_RUNNING;
172 case VIR_DOMAIN_EVENT_STOPPED:
173 ret = VIR_DOMAIN_SHUTOFF;
175 case VIR_DOMAIN_EVENT_SHUTDOWN:
176 ret = VIR_DOMAIN_SHUTDOWN;
178 #ifdef HAVE_DOM_STATE_PMSUSPENDED
179 case VIR_DOMAIN_EVENT_PMSUSPENDED:
180 ret = VIR_DOMAIN_PMSUSPENDED;
183 #ifdef HAVE_DOM_REASON_CRASHED
184 case VIR_DOMAIN_EVENT_CRASHED:
185 ret = VIR_DOMAIN_CRASHED;
189 ret = VIR_DOMAIN_NOSTATE;
194 #ifdef HAVE_DOM_REASON
195 static int map_domain_event_detail_to_reason(int event, int detail) {
198 case VIR_DOMAIN_EVENT_STARTED:
200 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
201 ret = VIR_DOMAIN_RUNNING_BOOTED;
203 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
205 ret = VIR_DOMAIN_RUNNING_MIGRATED;
207 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
208 ret = VIR_DOMAIN_RUNNING_RESTORED;
210 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
211 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
213 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
214 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
215 ret = VIR_DOMAIN_RUNNING_WAKEUP;
219 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
222 case VIR_DOMAIN_EVENT_SUSPENDED:
224 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
226 ret = VIR_DOMAIN_PAUSED_USER;
228 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
230 ret = VIR_DOMAIN_PAUSED_MIGRATION;
232 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
234 ret = VIR_DOMAIN_PAUSED_IOERROR;
236 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
238 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
240 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
242 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
244 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
246 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
248 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
250 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
252 #ifdef HAVE_DOM_REASON_POSTCOPY
253 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
255 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
257 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
259 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
263 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
266 case VIR_DOMAIN_EVENT_RESUMED:
268 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
270 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
272 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
274 ret = VIR_DOMAIN_RUNNING_MIGRATED;
276 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
277 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
279 #ifdef HAVE_DOM_REASON_POSTCOPY
280 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
281 running in post-copy mode */
282 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
286 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
289 case VIR_DOMAIN_EVENT_STOPPED:
291 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
292 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
294 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
295 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
297 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
298 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
300 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
301 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
303 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
304 ret = VIR_DOMAIN_SHUTOFF_SAVED;
306 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
307 ret = VIR_DOMAIN_SHUTOFF_FAILED;
309 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
310 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
313 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
316 case VIR_DOMAIN_EVENT_SHUTDOWN:
318 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
320 ret = VIR_DOMAIN_SHUTDOWN_USER;
323 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
326 #ifdef HAVE_DOM_STATE_PMSUSPENDED
327 case VIR_DOMAIN_EVENT_PMSUSPENDED:
329 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
331 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
333 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
334 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
337 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
341 case VIR_DOMAIN_EVENT_CRASHED:
343 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
344 ret = VIR_DOMAIN_CRASHED_PANICKED;
347 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
351 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
356 #define DOMAIN_STATE_REASON_MAX_SIZE 20
357 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
358 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
359 "the reason is unknown",
361 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
362 "the reason is unknown",
363 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
364 "normal startup from boot",
365 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
366 "migrated from another host",
367 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
368 "restored from a state file",
369 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
370 "restored from snapshot",
371 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
372 "returned from paused state",
373 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
374 "returned from migration",
375 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
376 "returned from failed save process",
377 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
378 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
379 "returned from pmsuspended due to wakeup event",
381 #ifdef HAVE_DOM_REASON_CRASHED
382 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
383 "resumed from crashed",
385 #ifdef HAVE_DOM_REASON_POSTCOPY
386 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
387 "running in post-copy migration mode",
389 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
390 "the reason is unknown",
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
393 "the reason is unknown",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
395 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
396 "paused for offline migration",
397 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
398 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
399 "paused for offline core dump",
400 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
401 "paused due to a disk I/O error",
402 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
403 "paused due to a watchdog event",
404 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
405 "paused after restoring from snapshot",
406 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
407 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
408 "paused during shutdown process",
410 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
411 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
412 "paused while creating a snapshot",
414 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
415 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
416 "paused due to a guest crash",
418 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
419 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
420 "the domain is being started",
422 #ifdef HAVE_DOM_REASON_POSTCOPY
423 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
424 "paused for post-copy migration",
425 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
426 "paused after failed post-copy",
428 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
429 "the reason is unknown",
430 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
431 "shutting down on user request",
433 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
434 "the reason is unknown",
435 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
436 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
437 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
438 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
439 "migrated to another host",
440 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
441 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
442 "domain failed to start",
443 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
444 "restored from a snapshot which was taken while domain was shutoff",
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 NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
460 #define NANOSEC_IN_SEC 1e9
462 #define GET_STATS(_f, _name, ...) \
464 status = _f(__VA_ARGS__); \
466 ERROR(PLUGIN_NAME ": Failed to get " _name); \
470 static virConnectPtr conn = 0;
471 static char *conn_string = NULL;
472 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
474 /* Node information required for %CPU */
475 static virNodeInfo nodeinfo;
477 /* Seconds between list refreshes, 0 disables completely. */
478 static int interval = 60;
480 /* List of domains, if specified. */
481 static ignorelist_t *il_domains = NULL;
482 /* List of block devices, if specified. */
483 static ignorelist_t *il_block_devices = NULL;
484 /* List of network interface devices, if specified. */
485 static ignorelist_t *il_interface_devices = NULL;
487 static int ignore_device_match(ignorelist_t *, const char *domname,
488 const char *devpath);
490 /* Actual list of block devices found on last refresh. */
491 struct block_device {
492 virDomainPtr dom; /* domain */
493 char *path; /* name of block device */
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,
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 3
561 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid };
563 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
565 /* PluginInstanceFormat */
566 #define PLGINST_MAX_FIELDS 2
568 enum plginst_field { plginst_none = 0, plginst_name, plginst_uuid };
570 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
573 /* BlockDeviceFormat */
574 enum bd_field { target, source };
576 /* InterfaceFormat. */
577 enum if_field { if_address, if_name, if_number };
580 #define EX_STATS_MAX_FIELDS 15
583 ex_stats_disk = 1 << 0,
584 ex_stats_pcpu = 1 << 1,
585 ex_stats_cpu_util = 1 << 2,
586 ex_stats_domain_state = 1 << 3,
587 #ifdef HAVE_PERF_STATS
588 ex_stats_perf = 1 << 4,
590 ex_stats_vcpupin = 1 << 5,
592 ex_stats_disk_err = 1 << 6,
595 ex_stats_fs_info = 1 << 7,
597 #ifdef HAVE_JOB_STATS
598 ex_stats_job_stats_completed = 1 << 8,
599 ex_stats_job_stats_background = 1 << 9,
603 static unsigned int extra_stats = ex_stats_none;
605 struct ex_stats_item {
609 static const struct ex_stats_item ex_stats_table[] = {
610 {"disk", ex_stats_disk},
611 {"pcpu", ex_stats_pcpu},
612 {"cpu_util", ex_stats_cpu_util},
613 {"domain_state", ex_stats_domain_state},
614 #ifdef HAVE_PERF_STATS
615 {"perf", ex_stats_perf},
617 {"vcpupin", ex_stats_vcpupin},
619 {"disk_err", ex_stats_disk_err},
622 {"fs_info", ex_stats_fs_info},
624 #ifdef HAVE_JOB_STATS
625 {"job_stats_completed", ex_stats_job_stats_completed},
626 {"job_stats_background", ex_stats_job_stats_background},
628 {NULL, ex_stats_none},
631 /* BlockDeviceFormatBasename */
632 _Bool blockdevice_format_basename = 0;
633 static enum bd_field blockdevice_format = target;
634 static enum if_field interface_format = if_name;
636 /* Time that we last refreshed. */
637 static time_t last_refresh = (time_t)0;
639 static int refresh_lists(struct lv_read_instance *inst);
643 unsigned long long total_user_cpu_time;
644 unsigned long long total_syst_cpu_time;
647 struct lv_block_info {
648 virDomainBlockStatsStruct bi;
650 long long rd_total_times;
651 long long wr_total_times;
654 long long fl_total_times;
657 static void init_block_info(struct lv_block_info *binfo) {
661 binfo->bi.rd_req = -1;
662 binfo->bi.wr_req = -1;
663 binfo->bi.rd_bytes = -1;
664 binfo->bi.wr_bytes = -1;
666 binfo->rd_total_times = -1;
667 binfo->wr_total_times = -1;
669 binfo->fl_total_times = -1;
672 #ifdef HAVE_BLOCK_STATS_FLAGS
674 #define GET_BLOCK_INFO_VALUE(NAME, FIELD) \
675 if (!strcmp(param[i].field, NAME)) { \
676 binfo->FIELD = param[i].value.l; \
680 static int get_block_info(struct lv_block_info *binfo,
681 virTypedParameterPtr param, int nparams) {
682 if (binfo == NULL || param == NULL)
685 for (int i = 0; i < nparams; ++i) {
686 /* ignore type. Everything must be LLONG anyway. */
687 GET_BLOCK_INFO_VALUE("rd_operations", bi.rd_req);
688 GET_BLOCK_INFO_VALUE("wr_operations", bi.wr_req);
689 GET_BLOCK_INFO_VALUE("rd_bytes", bi.rd_bytes);
690 GET_BLOCK_INFO_VALUE("wr_bytes", bi.wr_bytes);
691 GET_BLOCK_INFO_VALUE("rd_total_times", rd_total_times);
692 GET_BLOCK_INFO_VALUE("wr_total_times", wr_total_times);
693 GET_BLOCK_INFO_VALUE("flush_operations", fl_req);
694 GET_BLOCK_INFO_VALUE("flush_total_times", fl_total_times);
700 #undef GET_BLOCK_INFO_VALUE
702 #endif /* HAVE_BLOCK_STATS_FLAGS */
704 /* ERROR(...) macro for virterrors. */
705 #define VIRT_ERROR(conn, s) \
708 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
710 ERROR("%s: %s", (s), err->message); \
713 static void init_lv_info(struct lv_info *info) {
715 memset(info, 0, sizeof(*info));
718 static int lv_domain_info(virDomainPtr dom, struct lv_info *info) {
719 #ifdef HAVE_CPU_STATS
720 virTypedParameterPtr param = NULL;
722 #endif /* HAVE_CPU_STATS */
723 int ret = virDomainGetInfo(dom, &(info->di));
728 #ifdef HAVE_CPU_STATS
729 nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
731 VIRT_ERROR(conn, "getting the CPU params count");
735 param = calloc(nparams, sizeof(virTypedParameter));
737 ERROR("virt plugin: alloc(%i) for cpu parameters failed.", nparams);
741 ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
743 virTypedParamsClear(param, nparams);
745 VIRT_ERROR(conn, "getting the disk params values");
749 for (int i = 0; i < nparams; ++i) {
750 if (!strcmp(param[i].field, "user_time"))
751 info->total_user_cpu_time = param[i].value.ul;
752 else if (!strcmp(param[i].field, "system_time"))
753 info->total_syst_cpu_time = param[i].value.ul;
756 virTypedParamsClear(param, nparams);
758 #endif /* HAVE_CPU_STATS */
763 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
765 char uuid[VIR_UUID_STRING_BUFLEN];
767 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
771 /* Construct the hostname field according to HostnameFormat. */
772 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
773 if (hostname_format[i] == hf_none)
777 SSTRNCAT(vl->host, ":", sizeof(vl->host));
779 switch (hostname_format[i]) {
783 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
786 name = virDomainGetName(dom);
788 SSTRNCAT(vl->host, name, sizeof(vl->host));
791 if (virDomainGetUUIDString(dom, uuid) == 0)
792 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
797 /* Construct the plugin instance field according to PluginInstanceFormat. */
798 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
799 if (plugin_instance_format[i] == plginst_none)
803 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
805 switch (plugin_instance_format[i]) {
809 name = virDomainGetName(dom);
811 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
814 if (virDomainGetUUIDString(dom, uuid) == 0)
815 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
820 } /* void init_value_list */
822 static int init_notif(notification_t *notif, const virDomainPtr domain,
823 int severity, const char *msg, const char *type,
824 const char *type_instance) {
825 value_list_t vl = VALUE_LIST_INIT;
828 ERROR(PLUGIN_NAME ": init_notif: NULL pointer");
832 init_value_list(&vl, domain);
833 notification_init(notif, severity, msg, vl.host, vl.plugin,
834 vl.plugin_instance, type, type_instance);
835 notif->time = cdtime();
839 static void submit_notif(const virDomainPtr domain, int severity,
840 const char *msg, const char *type,
841 const char *type_instance) {
842 notification_t notif;
844 init_notif(¬if, domain, severity, msg, type, type_instance);
845 plugin_dispatch_notification(¬if);
847 plugin_notification_meta_free(notif.meta);
850 static void submit(virDomainPtr dom, char const *type,
851 char const *type_instance, value_t *values,
853 value_list_t vl = VALUE_LIST_INIT;
854 init_value_list(&vl, dom);
857 vl.values_len = values_len;
859 sstrncpy(vl.type, type, sizeof(vl.type));
860 if (type_instance != NULL)
861 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
863 plugin_dispatch_values(&vl);
866 static void memory_submit(virDomainPtr dom, gauge_t value) {
867 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
870 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
872 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
873 "minor_fault", "unused", "available",
874 "actual_balloon", "rss", "usable",
877 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
878 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
882 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
885 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
886 virDomainPtr dom, const char *devname) {
888 {.derive = v0}, {.derive = v1},
891 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
892 } /* void submit_derive2 */
894 static void pcpu_submit(virDomainPtr dom, struct lv_info *info) {
895 #ifdef HAVE_CPU_STATS
896 if (extra_stats & ex_stats_pcpu)
897 submit_derive2("ps_cputime", info->total_user_cpu_time,
898 info->total_syst_cpu_time, dom, NULL);
899 #endif /* HAVE_CPU_STATS */
902 static double cpu_ns_to_percent(unsigned int node_cpus,
903 unsigned long long cpu_time_old,
904 unsigned long long cpu_time_new) {
905 double percent = 0.0;
906 unsigned long long cpu_time_diff = 0;
907 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
909 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
910 cpu_time_diff = cpu_time_new - cpu_time_old;
911 percent = ((double)(100 * cpu_time_diff)) /
912 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
915 DEBUG(PLUGIN_NAME ": node_cpus=%u cpu_time_old=%" PRIu64
916 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
917 " time_diff_sec=%f percent=%f",
918 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
919 (uint64_t)cpu_time_diff, time_diff_sec, percent);
924 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
929 if (extra_stats & ex_stats_cpu_util) {
930 /* Computing %CPU requires 2 samples of cpuTime */
931 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
933 submit(dom->ptr, "percent", "virt_cpu_total",
934 &(value_t){.gauge = cpu_ns_to_percent(
935 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
940 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
944 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
946 char type_instance[DATA_MAX_NAME_LEN];
948 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
949 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
952 static void disk_submit(struct lv_block_info *binfo, virDomainPtr dom,
954 char *dev_copy = strdup(dev);
955 const char *type_instance = dev_copy;
960 if (blockdevice_format_basename && blockdevice_format == source)
961 type_instance = basename(dev_copy);
963 if (!type_instance) {
968 char flush_type_instance[DATA_MAX_NAME_LEN];
969 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
972 if ((binfo->bi.rd_req != -1) && (binfo->bi.wr_req != -1))
973 submit_derive2("disk_ops", (derive_t)binfo->bi.rd_req,
974 (derive_t)binfo->bi.wr_req, dom, type_instance);
976 if ((binfo->bi.rd_bytes != -1) && (binfo->bi.wr_bytes != -1))
977 submit_derive2("disk_octets", (derive_t)binfo->bi.rd_bytes,
978 (derive_t)binfo->bi.wr_bytes, dom, type_instance);
980 if (extra_stats & ex_stats_disk) {
981 if ((binfo->rd_total_times != -1) && (binfo->wr_total_times != -1))
982 submit_derive2("disk_time", (derive_t)binfo->rd_total_times,
983 (derive_t)binfo->wr_total_times, dom, type_instance);
985 if (binfo->fl_req != -1)
986 submit(dom, "total_requests", flush_type_instance,
987 &(value_t){.derive = (derive_t)binfo->fl_req}, 1);
988 if (binfo->fl_total_times != -1) {
989 derive_t value = binfo->fl_total_times / 1000; // ns -> ms
990 submit(dom, "total_time_in_ms", flush_type_instance,
991 &(value_t){.derive = value}, 1);
998 static unsigned int parse_ex_stats_flags(char **exstats, int numexstats) {
999 unsigned int ex_stats_flags = ex_stats_none;
1000 for (int i = 0; i < numexstats; i++) {
1001 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1002 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1003 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1004 ex_stats_table[j].name);
1005 ex_stats_flags |= ex_stats_table[j].flag;
1009 if (ex_stats_table[j + 1].name == NULL) {
1010 ERROR(PLUGIN_NAME ": Unmatched ExtraStats option: %s", exstats[i]);
1014 return ex_stats_flags;
1017 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1018 if ((state < 0) || (state >= STATIC_ARRAY_SIZE(domain_states))) {
1019 ERROR(PLUGIN_NAME ": Array index out of bounds: state=%d", state);
1023 char msg[DATA_MAX_NAME_LEN];
1024 const char *state_str = domain_states[state];
1025 #ifdef HAVE_DOM_REASON
1026 if ((reason < 0) || (reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1027 ERROR(PLUGIN_NAME ": Array index out of bounds: reason=%d", reason);
1031 const char *reason_str = domain_reasons[state][reason];
1032 /* Array size for domain reasons is fixed, but different domain states can
1033 * have different number of reasons. We need to check if reason was
1034 * successfully parsed */
1036 ERROR(PLUGIN_NAME ": Invalid reason (%d) for domain state: %s", reason,
1041 const char *reason_str = "N/A";
1044 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1049 case VIR_DOMAIN_NOSTATE:
1050 case VIR_DOMAIN_RUNNING:
1051 case VIR_DOMAIN_SHUTDOWN:
1052 case VIR_DOMAIN_SHUTOFF:
1053 severity = NOTIF_OKAY;
1055 case VIR_DOMAIN_BLOCKED:
1056 case VIR_DOMAIN_PAUSED:
1057 #ifdef DOM_STATE_PMSUSPENDED
1058 case VIR_DOMAIN_PMSUSPENDED:
1060 severity = NOTIF_WARNING;
1062 case VIR_DOMAIN_CRASHED:
1063 severity = NOTIF_FAILURE;
1066 ERROR(PLUGIN_NAME ": Unrecognized domain state (%d)", state);
1069 submit_notif(dom, severity, msg, "domain_state", NULL);
1072 static int lv_config(const char *key, const char *value) {
1073 if (virInitialize() != 0)
1076 if (il_domains == NULL)
1077 il_domains = ignorelist_create(1);
1078 if (il_block_devices == NULL)
1079 il_block_devices = ignorelist_create(1);
1080 if (il_interface_devices == NULL)
1081 il_interface_devices = ignorelist_create(1);
1083 if (strcasecmp(key, "Connection") == 0) {
1084 char *tmp = strdup(value);
1086 ERROR(PLUGIN_NAME " plugin: Connection strdup failed.");
1094 if (strcasecmp(key, "RefreshInterval") == 0) {
1096 interval = strtol(value, &eptr, 10);
1097 if (eptr == NULL || *eptr != '\0')
1102 if (strcasecmp(key, "Domain") == 0) {
1103 if (ignorelist_add(il_domains, value))
1107 if (strcasecmp(key, "BlockDevice") == 0) {
1108 if (ignorelist_add(il_block_devices, value))
1113 if (strcasecmp(key, "BlockDeviceFormat") == 0) {
1114 if (strcasecmp(value, "target") == 0)
1115 blockdevice_format = target;
1116 else if (strcasecmp(value, "source") == 0)
1117 blockdevice_format = source;
1119 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s", value);
1124 if (strcasecmp(key, "BlockDeviceFormatBasename") == 0) {
1125 blockdevice_format_basename = IS_TRUE(value);
1128 if (strcasecmp(key, "InterfaceDevice") == 0) {
1129 if (ignorelist_add(il_interface_devices, value))
1134 if (strcasecmp(key, "IgnoreSelected") == 0) {
1135 if (IS_TRUE(value)) {
1136 ignorelist_set_invert(il_domains, 0);
1137 ignorelist_set_invert(il_block_devices, 0);
1138 ignorelist_set_invert(il_interface_devices, 0);
1140 ignorelist_set_invert(il_domains, 1);
1141 ignorelist_set_invert(il_block_devices, 1);
1142 ignorelist_set_invert(il_interface_devices, 1);
1147 if (strcasecmp(key, "HostnameFormat") == 0) {
1149 char *fields[HF_MAX_FIELDS];
1152 value_copy = strdup(value);
1153 if (value_copy == NULL) {
1154 ERROR(PLUGIN_NAME " plugin: strdup failed.");
1158 n = strsplit(value_copy, fields, HF_MAX_FIELDS);
1161 ERROR(PLUGIN_NAME " plugin: HostnameFormat: no fields");
1165 for (int i = 0; i < n; ++i) {
1166 if (strcasecmp(fields[i], "hostname") == 0)
1167 hostname_format[i] = hf_hostname;
1168 else if (strcasecmp(fields[i], "name") == 0)
1169 hostname_format[i] = hf_name;
1170 else if (strcasecmp(fields[i], "uuid") == 0)
1171 hostname_format[i] = hf_uuid;
1173 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1181 for (int i = n; i < HF_MAX_FIELDS; ++i)
1182 hostname_format[i] = hf_none;
1187 if (strcasecmp(key, "PluginInstanceFormat") == 0) {
1189 char *fields[PLGINST_MAX_FIELDS];
1192 value_copy = strdup(value);
1193 if (value_copy == NULL) {
1194 ERROR(PLUGIN_NAME " plugin: strdup failed.");
1198 n = strsplit(value_copy, fields, PLGINST_MAX_FIELDS);
1201 ERROR(PLUGIN_NAME " plugin: PluginInstanceFormat: no fields");
1205 for (int i = 0; i < n; ++i) {
1206 if (strcasecmp(fields[i], "none") == 0) {
1207 plugin_instance_format[i] = plginst_none;
1209 } else if (strcasecmp(fields[i], "name") == 0)
1210 plugin_instance_format[i] = plginst_name;
1211 else if (strcasecmp(fields[i], "uuid") == 0)
1212 plugin_instance_format[i] = plginst_uuid;
1214 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1222 for (int i = n; i < PLGINST_MAX_FIELDS; ++i)
1223 plugin_instance_format[i] = plginst_none;
1228 if (strcasecmp(key, "InterfaceFormat") == 0) {
1229 if (strcasecmp(value, "name") == 0)
1230 interface_format = if_name;
1231 else if (strcasecmp(value, "address") == 0)
1232 interface_format = if_address;
1233 else if (strcasecmp(value, "number") == 0)
1234 interface_format = if_number;
1236 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", value);
1242 if (strcasecmp(key, "Instances") == 0) {
1244 double val = strtod(value, &eptr);
1246 if (*eptr != '\0') {
1247 ERROR(PLUGIN_NAME " plugin: Invalid value for Instances = '%s'", value);
1251 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1254 if (val > NR_INSTANCES_MAX) {
1255 ERROR(PLUGIN_NAME " plugin: Instances=%f > NR_INSTANCES_MAX=%i"
1256 " use a lower setting or recompile the plugin.",
1257 val, NR_INSTANCES_MAX);
1261 nr_instances = (int)val;
1262 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1266 if (strcasecmp(key, "ExtraStats") == 0) {
1267 char *localvalue = strdup(value);
1268 if (localvalue != NULL) {
1269 char *exstats[EX_STATS_MAX_FIELDS];
1271 strsplit(localvalue, exstats, STATIC_ARRAY_SIZE(exstats));
1272 extra_stats = parse_ex_stats_flags(exstats, numexstats);
1275 #ifdef HAVE_JOB_STATS
1276 if ((extra_stats & ex_stats_job_stats_completed) &&
1277 (extra_stats & ex_stats_job_stats_background)) {
1278 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1279 "type of job statistics can be collected at the same "
1287 if (strcasecmp(key, "PersistentNotification") == 0) {
1288 persistent_notification = IS_TRUE(value);
1292 /* Unrecognised option. */
1296 static int lv_connect(void) {
1298 /* `conn_string == NULL' is acceptable */
1300 /* virDomainGetFSInfo requires full read-write access connection */
1301 if (extra_stats & ex_stats_fs_info)
1302 conn = virConnectOpen(conn_string);
1305 conn = virConnectOpenReadOnly(conn_string);
1307 c_complain(LOG_ERR, &conn_complain,
1308 PLUGIN_NAME " plugin: Unable to connect: "
1309 "virConnectOpen failed.");
1312 int status = virNodeGetInfo(conn, &nodeinfo);
1314 ERROR(PLUGIN_NAME ": virNodeGetInfo failed");
1318 c_release(LOG_NOTICE, &conn_complain,
1319 PLUGIN_NAME " plugin: Connection established.");
1323 static void lv_disconnect(void) {
1325 virConnectClose(conn);
1327 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1330 static int lv_domain_block_info(virDomainPtr dom, const char *path,
1331 struct lv_block_info *binfo) {
1332 #ifdef HAVE_BLOCK_STATS_FLAGS
1334 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1336 VIRT_ERROR(conn, "getting the disk params count");
1340 virTypedParameterPtr params = calloc((size_t)nparams, sizeof(*params));
1341 if (params == NULL) {
1342 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1348 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1349 VIRT_ERROR(conn, "getting the disk params values");
1351 rc = get_block_info(binfo, params, nparams);
1354 virTypedParamsClear(params, nparams);
1358 return virDomainBlockStats(dom, path, &(binfo->bi), sizeof(binfo->bi));
1359 #endif /* HAVE_BLOCK_STATS_FLAGS */
1362 #ifdef HAVE_PERF_STATS
1363 static void perf_submit(virDomainStatsRecordPtr stats) {
1364 for (int i = 0; i < stats->nparams; ++i) {
1365 /* Replace '.' with '_' in event field to match other metrics' naming
1367 char *c = strchr(stats->params[i].field, '.');
1370 submit(stats->dom, "perf", stats->params[i].field,
1371 &(value_t){.derive = stats->params[i].value.ul}, 1);
1375 static int get_perf_events(virDomainPtr domain) {
1376 virDomainStatsRecordPtr *stats = NULL;
1377 /* virDomainListGetStats requires a NULL terminated list of domains */
1378 virDomainPtr domain_array[] = {domain, NULL};
1381 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1383 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1387 for (int i = 0; i < status; ++i)
1388 perf_submit(stats[i]);
1390 virDomainStatsRecordListFree(stats);
1393 #endif /* HAVE_PERF_STATS */
1395 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1396 unsigned char *cpu_maps, int cpu_map_len) {
1397 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1398 char type_instance[DATA_MAX_NAME_LEN];
1399 _Bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu) ? 1 : 0;
1401 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1402 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1406 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1407 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1408 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1410 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(vinfo[0]));
1411 if (vinfo == NULL) {
1412 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1416 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1417 if (cpumaps == NULL) {
1418 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1424 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1426 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1433 for (int i = 0; i < nr_virt_cpu; ++i) {
1434 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1435 if (extra_stats & ex_stats_vcpupin)
1436 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1444 #ifdef HAVE_DOM_REASON
1446 static void domain_state_submit(virDomainPtr dom, int state, int reason) {
1447 value_t values[] = {
1448 {.gauge = (gauge_t)state}, {.gauge = (gauge_t)reason},
1451 submit(dom, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1454 static int get_domain_state(virDomainPtr domain) {
1455 int domain_state = 0;
1456 int domain_reason = 0;
1458 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1460 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1465 domain_state_submit(domain, domain_state, domain_reason);
1470 #ifdef HAVE_LIST_ALL_DOMAINS
1471 static int get_domain_state_notify(virDomainPtr domain) {
1472 int domain_state = 0;
1473 int domain_reason = 0;
1475 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1477 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1482 if (persistent_notification)
1483 domain_state_submit_notif(domain, domain_state, domain_reason);
1487 #endif /* HAVE_LIST_ALL_DOMAINS */
1488 #endif /* HAVE_DOM_REASON */
1490 static int get_memory_stats(virDomainPtr domain) {
1491 virDomainMemoryStatPtr minfo =
1492 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(virDomainMemoryStatStruct));
1493 if (minfo == NULL) {
1494 ERROR("virt plugin: malloc failed.");
1499 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1500 if (mem_stats < 0) {
1501 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1507 for (int i = 0; i < mem_stats; i++)
1508 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1514 #ifdef HAVE_DISK_ERR
1515 static void disk_err_submit(virDomainPtr domain,
1516 virDomainDiskErrorPtr disk_err) {
1517 submit(domain, "disk_error", disk_err->disk,
1518 &(value_t){.gauge = disk_err->error}, 1);
1521 static int get_disk_err(virDomainPtr domain) {
1522 /* Get preferred size of disk errors array */
1523 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1524 if (disk_err_count == -1) {
1526 " plugin: failed to get preferred size of disk errors array");
1531 " plugin: preferred size of disk errors array: %d for domain %s",
1532 disk_err_count, virDomainGetName(domain));
1533 virDomainDiskError disk_err[disk_err_count];
1535 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1536 if (disk_err_count == -1) {
1537 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1542 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1543 disk_err_count, virDomainGetName(domain));
1545 for (int i = 0; i < disk_err_count; ++i) {
1546 disk_err_submit(domain, &disk_err[i]);
1547 sfree(disk_err[i].disk);
1552 #endif /* HAVE_DISK_ERR */
1554 static int get_block_stats(struct block_device *block_dev) {
1557 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1561 struct lv_block_info binfo;
1562 init_block_info(&binfo);
1564 if (lv_domain_block_info(block_dev->dom, block_dev->path, &binfo) < 0) {
1565 ERROR(PLUGIN_NAME " plugin: lv_domain_block_info failed");
1569 disk_submit(&binfo, block_dev->dom, block_dev->path);
1575 #define NM_ADD_ITEM(_fun, _name, _val) \
1577 ret = _fun(¬if, _name, _val); \
1579 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1584 #define NM_ADD_STR_ITEMS(_items, _size) \
1586 for (int _i = 0; _i < _size; ++_i) { \
1588 " plugin: Adding notification metadata name=%s value=%s", \
1589 _items[_i].name, _items[_i].value); \
1590 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1591 _items[_i].value); \
1595 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1596 notification_t notif;
1599 /* Local struct, just for the purpose of this function. */
1600 typedef struct nm_str_item_s {
1605 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1606 nm_str_item_t fs_str_items[] = {
1607 {.name = "mountpoint", .value = fs_info->mountpoint},
1608 {.name = "name", .value = fs_info->name},
1609 {.name = "fstype", .value = fs_info->fstype}};
1611 for (int i = 0; i < fs_info->ndevAlias; ++i) {
1612 fs_dev_alias[i].name = "devAlias";
1613 fs_dev_alias[i].value = fs_info->devAlias[i];
1616 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1617 "file_system", NULL);
1618 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1619 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1620 fs_info->ndevAlias);
1621 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1623 plugin_dispatch_notification(¬if);
1627 plugin_notification_meta_free(notif.meta);
1631 #undef RETURN_ON_ERR
1632 #undef NM_ADD_STR_ITEMS
1634 static int get_fs_info(virDomainPtr domain) {
1635 virDomainFSInfoPtr *fs_info = NULL;
1638 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1639 if (mount_points_cnt == -1) {
1640 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1642 return mount_points_cnt;
1645 for (int i = 0; i < mount_points_cnt; ++i) {
1646 if (fs_info_notify(domain, fs_info[i]) != 0) {
1647 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1648 "for mount point %s",
1649 fs_info[i]->mountpoint);
1652 virDomainFSInfoFree(fs_info[i]);
1659 #endif /* HAVE_FS_INFO */
1661 #ifdef HAVE_JOB_STATS
1662 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1665 if (param->type == VIR_TYPED_PARAM_INT)
1666 vl.derive = param->value.i;
1667 else if (param->type == VIR_TYPED_PARAM_UINT)
1668 vl.derive = param->value.ui;
1669 else if (param->type == VIR_TYPED_PARAM_LLONG)
1670 vl.derive = param->value.l;
1671 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1672 vl.derive = param->value.ul;
1673 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1674 vl.derive = param->value.d;
1675 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1676 vl.derive = param->value.b;
1677 else if (param->type == VIR_TYPED_PARAM_STRING) {
1678 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1681 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1685 submit(domain, "job_stats", param->field, &vl, 1);
1688 static int get_job_stats(virDomainPtr domain) {
1692 virTypedParameterPtr params = NULL;
1693 int flags = (extra_stats & ex_stats_job_stats_completed)
1694 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1697 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1699 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1703 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1705 for (int i = 0; i < nparams; ++i) {
1706 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1708 job_stats_submit(domain, ¶ms[i]);
1711 virTypedParamsFree(params, nparams);
1714 #endif /* HAVE_JOB_STATS */
1716 static int get_domain_metrics(domain_t *domain) {
1717 struct lv_info info;
1719 if (!domain || !domain->ptr) {
1720 ERROR(PLUGIN_NAME ": get_domain_metrics: NULL pointer");
1724 init_lv_info(&info);
1725 int status = lv_domain_info(domain->ptr, &info);
1727 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1732 if (extra_stats & ex_stats_domain_state) {
1733 #ifdef HAVE_DOM_REASON
1734 /* At this point we already know domain's state from virDomainGetInfo call,
1735 * however it doesn't provide a reason for entering particular state.
1736 * We need to get it from virDomainGetState.
1738 GET_STATS(get_domain_state, "domain reason", domain->ptr);
1742 /* Gather remaining stats only for running domains */
1743 if (info.di.state != VIR_DOMAIN_RUNNING)
1746 pcpu_submit(domain->ptr, &info);
1747 cpu_submit(domain, info.di.cpuTime);
1749 memory_submit(domain->ptr, (gauge_t)info.di.memory * 1024);
1751 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.di.nrVirtCpu);
1752 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
1754 #ifdef HAVE_PERF_STATS
1755 if (extra_stats & ex_stats_perf)
1756 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
1760 if (extra_stats & ex_stats_fs_info)
1761 GET_STATS(get_fs_info, "file system info", domain->ptr);
1764 #ifdef HAVE_DISK_ERR
1765 if (extra_stats & ex_stats_disk_err)
1766 GET_STATS(get_disk_err, "disk errors", domain->ptr);
1769 #ifdef HAVE_JOB_STATS
1771 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
1772 GET_STATS(get_job_stats, "job stats", domain->ptr);
1775 /* Update cached virDomainInfo. It has to be done after cpu_submit */
1776 memcpy(&domain->info, &info.di, sizeof(domain->info));
1781 static int get_if_dev_stats(struct interface_device *if_dev) {
1782 virDomainInterfaceStatsStruct stats = {0};
1783 char *display_name = NULL;
1786 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
1790 switch (interface_format) {
1792 display_name = if_dev->address;
1795 display_name = if_dev->number;
1799 display_name = if_dev->path;
1802 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
1803 sizeof(stats)) != 0) {
1804 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
1808 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
1809 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
1810 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
1812 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
1813 submit_derive2("if_packets", (derive_t)stats.rx_packets,
1814 (derive_t)stats.tx_packets, if_dev->dom, display_name);
1816 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
1817 submit_derive2("if_errors", (derive_t)stats.rx_errs,
1818 (derive_t)stats.tx_errs, if_dev->dom, display_name);
1820 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
1821 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
1822 (derive_t)stats.tx_drop, if_dev->dom, display_name);
1826 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr conn,
1827 virDomainPtr dom, int event, int detail,
1828 __attribute__((unused)) void *opaque) {
1829 int domain_state = map_domain_event_to_state(event);
1830 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
1831 #ifdef HAVE_DOM_REASON
1832 domain_reason = map_domain_event_detail_to_reason(event, detail);
1834 domain_state_submit_notif(dom, domain_state, domain_reason);
1839 static int register_event_impl(void) {
1840 if (virEventRegisterDefaultImpl() < 0) {
1841 virErrorPtr err = virGetLastError();
1843 " plugin: error while event implementation registering: %s",
1844 err && err->message ? err->message : "Unknown error");
1851 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
1852 const _Bool active) {
1853 assert(thread_data != NULL);
1854 pthread_mutex_lock(&thread_data->active_mutex);
1855 thread_data->is_active = active;
1856 pthread_mutex_unlock(&thread_data->active_mutex);
1859 static _Bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
1862 assert(thread_data != NULL);
1863 pthread_mutex_lock(&thread_data->active_mutex);
1864 state = thread_data->is_active;
1865 pthread_mutex_unlock(&thread_data->active_mutex);
1870 /* worker function running default event implementation */
1871 static void *event_loop_worker(void *arg) {
1872 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
1874 while (virt_notif_thread_is_active(thread_data)) {
1875 if (virEventRunDefaultImpl() < 0) {
1876 virErrorPtr err = virGetLastError();
1877 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
1878 err && err->message ? err->message : "Unknown error");
1885 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
1888 assert(thread_data != NULL);
1889 ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
1891 ERROR(PLUGIN_NAME ": Failed to initialize mutex, err %u", ret);
1896 * '0' and positive integers are meaningful ID's, therefore setting
1897 * domain_event_cb_id to '-1'
1899 thread_data->domain_event_cb_id = -1;
1900 thread_data->is_active = 0;
1905 /* register domain event callback and start event loop thread */
1906 static int start_event_loop(virt_notif_thread_t *thread_data) {
1907 assert(thread_data != NULL);
1908 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
1909 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
1910 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
1911 if (thread_data->domain_event_cb_id == -1) {
1912 ERROR(PLUGIN_NAME " plugin: error while callback registering");
1916 virt_notif_thread_set_active(thread_data, 1);
1917 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
1919 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
1920 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
1927 /* stop event loop thread and deregister callback */
1928 static void stop_event_loop(virt_notif_thread_t *thread_data) {
1929 /* stopping loop and de-registering event handler*/
1930 virt_notif_thread_set_active(thread_data, 0);
1931 if (conn != NULL && thread_data->domain_event_cb_id != -1)
1932 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
1934 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
1935 ERROR(PLUGIN_NAME " plugin: stopping thread %lu failed",
1936 notif_thread.event_loop_tid);
1939 static int persistent_domains_state_notification(void) {
1942 #ifdef HAVE_LIST_ALL_DOMAINS
1943 virDomainPtr *domains = NULL;
1944 n = virConnectListAllDomains(conn, &domains,
1945 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
1947 VIRT_ERROR(conn, "reading list of persistent domains");
1950 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
1951 /* Fetch each persistent domain's state and notify it */
1953 for (int i = 0; i < n; ++i) {
1954 status = get_domain_state_notify(domains[i]);
1957 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
1958 virDomainGetName(domains[i]));
1960 virDomainFree(domains[i]);
1964 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
1968 n = virConnectNumOfDomains(conn);
1971 /* Get list of domains. */
1972 domids = calloc(n, sizeof(*domids));
1973 if (domids == NULL) {
1974 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1977 n = virConnectListDomains(conn, domids, n);
1979 VIRT_ERROR(conn, "reading list of domains");
1983 /* Fetch info of each active domain and notify it */
1984 for (int i = 0; i < n; ++i) {
1986 virDomainPtr dom = NULL;
1987 dom = virDomainLookupByID(conn, domids[i]);
1989 VIRT_ERROR(conn, "virDomainLookupByID");
1990 /* Could be that the domain went away -- ignore it anyway. */
1993 status = virDomainGetInfo(dom, &info);
1995 /* virDomainGetState is not available. Submit 0, which corresponds to
1996 * unknown reason. */
1997 domain_state_submit_notif(dom, info.state, 0);
1999 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2011 static int lv_read(user_data_t *ud) {
2013 struct lv_read_instance *inst = NULL;
2014 struct lv_read_state *state = NULL;
2016 if (ud->data == NULL) {
2017 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2022 state = &inst->read_state;
2024 _Bool reconnect = conn == NULL ? 1 : 0;
2025 /* event implementation must be registered before connection is opened */
2026 if (inst->id == 0) {
2027 if (!persistent_notification && reconnect)
2028 if (register_event_impl() != 0)
2031 if (lv_connect() < 0)
2034 if (!persistent_notification && reconnect && conn != NULL)
2035 if (start_event_loop(¬if_thread) != 0)
2041 /* Need to refresh domain or device lists? */
2042 if ((last_refresh == (time_t)0) ||
2043 ((interval > 0) && ((last_refresh + interval) <= t))) {
2044 if (refresh_lists(inst) != 0) {
2045 if (inst->id == 0) {
2046 if (!persistent_notification)
2047 stop_event_loop(¬if_thread);
2055 /* persistent domains state notifications are handled by instance 0 */
2056 if (inst->id == 0 && persistent_notification) {
2057 int status = persistent_domains_state_notification();
2059 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2060 "returned with status %i",
2065 for (int i = 0; i < state->nr_domains; ++i)
2066 DEBUG(PLUGIN_NAME " plugin: domain %s",
2067 virDomainGetName(state->domains[i].ptr));
2068 for (int i = 0; i < state->nr_block_devices; ++i)
2069 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2070 virDomainGetName(state->block_devices[i].dom),
2071 state->block_devices[i].path);
2072 for (int i = 0; i < state->nr_interface_devices; ++i)
2073 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2074 virDomainGetName(state->interface_devices[i].dom),
2075 state->interface_devices[i].path);
2078 /* Get domains' metrics */
2079 for (int i = 0; i < state->nr_domains; ++i) {
2080 domain_t *dom = &state->domains[i];
2083 status = get_domain_metrics(dom);
2084 #ifdef HAVE_DOM_REASON
2086 status = get_domain_state(dom->ptr);
2090 ERROR(PLUGIN_NAME " failed to get metrics for domain=%s",
2091 virDomainGetName(dom->ptr));
2094 /* Get block device stats for each domain. */
2095 for (int i = 0; i < state->nr_block_devices; ++i) {
2096 int status = get_block_stats(&state->block_devices[i]);
2099 " failed to get stats for block device (%s) in domain %s",
2100 state->block_devices[i].path,
2101 virDomainGetName(state->domains[i].ptr));
2104 /* Get interface stats for each domain. */
2105 for (int i = 0; i < state->nr_interface_devices; ++i) {
2106 int status = get_if_dev_stats(&state->interface_devices[i]);
2109 " failed to get interface stats for device (%s) in domain %s",
2110 state->interface_devices[i].path,
2111 virDomainGetName(state->interface_devices[i].dom));
2117 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2118 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2119 struct lv_read_instance *inst = &(lv_ud->inst);
2121 memset(lv_ud, 0, sizeof(*lv_ud));
2123 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2126 user_data_t *ud = &(lv_ud->ud);
2128 ud->free_func = NULL;
2130 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2132 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2135 static void lv_clean_read_state(struct lv_read_state *state) {
2136 free_block_devices(state);
2137 free_interface_devices(state);
2138 free_domains(state);
2141 static void lv_fini_instance(size_t i) {
2142 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2143 struct lv_read_state *state = &(inst->read_state);
2145 lv_clean_read_state(state);
2147 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2150 static int lv_init(void) {
2151 if (virInitialize() != 0)
2154 /* event implementation must be registered before connection is opened */
2155 if (!persistent_notification)
2156 if (register_event_impl() != 0)
2159 if (lv_connect() != 0)
2162 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2164 if (!persistent_notification) {
2165 virt_notif_thread_init(¬if_thread);
2166 if (start_event_loop(¬if_thread) != 0)
2170 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2172 for (int i = 0; i < nr_instances; ++i)
2173 if (lv_init_instance(i, lv_read) != 0)
2180 * returns 0 on success and <0 on error
2182 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2184 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2185 xmlXPathObjectPtr xpath_obj = NULL;
2186 xmlNodePtr xml_node = NULL;
2190 err = xmlXPathRegisterNs(xpath_ctx,
2191 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2192 (const xmlChar *)METADATA_VM_PARTITION_URI);
2194 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2195 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2199 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2200 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2201 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2202 if (xpath_obj == NULL) {
2203 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2204 xpath_str, dom_name);
2208 if (xpath_obj->type != XPATH_NODESET) {
2209 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2210 "(wanted %d) on domain %s",
2211 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2216 * from now on there is no real error, it's ok if a domain
2217 * doesn't have the metadata partition tag.
2220 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2221 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2222 "expected=1 on domain %s",
2224 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2227 xml_node = xpath_obj->nodesetval->nodeTab[0];
2228 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2232 /* deregister to clean up */
2233 err = xmlXPathRegisterNs(xpath_ctx,
2234 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2236 /* we can't really recover here */
2238 " plugin: deregistration of namespace %s failed for domain %s",
2239 METADATA_VM_PARTITION_PREFIX, dom_name);
2242 xmlXPathFreeObject(xpath_obj);
2247 static int is_known_tag(const char *dom_tag) {
2248 for (int i = 0; i < nr_instances; ++i)
2249 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2254 static int lv_instance_include_domain(struct lv_read_instance *inst,
2255 const char *dom_name,
2256 const char *dom_tag) {
2257 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2260 /* instance#0 will always be there, so it is in charge of extra duties */
2261 if (inst->id == 0) {
2262 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2263 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2264 "with unknown tag '%s'",
2265 inst->tag, dom_name, dom_tag);
2273 static int refresh_lists(struct lv_read_instance *inst) {
2274 struct lv_read_state *state = &inst->read_state;
2277 #ifndef HAVE_LIST_ALL_DOMAINS
2278 n = virConnectNumOfDomains(conn);
2280 VIRT_ERROR(conn, "reading number of domains");
2285 lv_clean_read_state(state);
2287 #ifndef HAVE_LIST_ALL_DOMAINS
2292 #ifdef HAVE_LIST_ALL_DOMAINS
2293 virDomainPtr *domains, *domains_inactive;
2294 int m = virConnectListAllDomains(conn, &domains_inactive,
2295 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2296 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2300 /* Get list of domains. */
2301 domids = calloc(n, sizeof(*domids));
2302 if (domids == NULL) {
2303 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2307 n = virConnectListDomains(conn, domids, n);
2311 VIRT_ERROR(conn, "reading list of domains");
2312 #ifndef HAVE_LIST_ALL_DOMAINS
2315 for (int i = 0; i < m; ++i)
2316 virDomainFree(domains_inactive[i]);
2317 sfree(domains_inactive);
2322 #ifdef HAVE_LIST_ALL_DOMAINS
2323 for (int i = 0; i < m; ++i)
2324 if (add_domain(state, domains_inactive[i], 0) < 0) {
2325 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2326 virDomainFree(domains_inactive[i]);
2327 domains_inactive[i] = NULL;
2332 /* Fetch each domain and add it to the list, unless ignore. */
2333 for (int i = 0; i < n; ++i) {
2336 xmlDocPtr xml_doc = NULL;
2337 xmlXPathContextPtr xpath_ctx = NULL;
2338 xmlXPathObjectPtr xpath_obj = NULL;
2339 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2343 #ifdef HAVE_LIST_ALL_DOMAINS
2344 virDomainPtr dom = domains[i];
2346 virDomainPtr dom = NULL;
2347 dom = virDomainLookupByID(conn, domids[i]);
2349 VIRT_ERROR(conn, "virDomainLookupByID");
2350 /* Could be that the domain went away -- ignore it anyway. */
2355 if (add_domain(state, dom, 1) < 0) {
2357 * When domain is already tracked, then there is
2358 * no problem with memory handling (will be freed
2359 * with the rest of domains cached data)
2360 * But in case of error like this (error occurred
2361 * before adding domain to track) we have to take
2362 * care it ourselves and call virDomainFree
2364 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2369 name = virDomainGetName(dom);
2371 VIRT_ERROR(conn, "virDomainGetName");
2375 status = virDomainGetInfo(dom, &info);
2377 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2382 if (info.state != VIR_DOMAIN_RUNNING) {
2383 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", name);
2387 if (il_domains && ignorelist_match(il_domains, name) != 0)
2390 /* Get a list of devices for this domain. */
2391 xml = virDomainGetXMLDesc(dom, 0);
2393 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2397 /* Yuck, XML. Parse out the devices. */
2398 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2399 if (xml_doc == NULL) {
2400 VIRT_ERROR(conn, "xmlReadDoc");
2404 xpath_ctx = xmlXPathNewContext(xml_doc);
2406 if (lv_domain_get_tag(xpath_ctx, name, tag) < 0) {
2407 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2411 if (!lv_instance_include_domain(inst, name, tag))
2414 /* Block devices. */
2415 const char *bd_xmlpath = "/domain/devices/disk/target[@dev]";
2416 if (blockdevice_format == source)
2417 bd_xmlpath = "/domain/devices/disk/source[@dev]";
2418 xpath_obj = xmlXPathEval((const xmlChar *)bd_xmlpath, xpath_ctx);
2420 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
2421 xpath_obj->nodesetval == NULL)
2424 for (int j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
2428 node = xpath_obj->nodesetval->nodeTab[j];
2431 path = (char *)xmlGetProp(node, (xmlChar *)"dev");
2435 if (il_block_devices &&
2436 ignore_device_match(il_block_devices, name, path) != 0)
2439 add_block_device(state, dom, path);
2444 xmlXPathFreeObject(xpath_obj);
2446 /* Network interfaces. */
2447 xpath_obj = xmlXPathEval(
2448 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2449 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
2450 xpath_obj->nodesetval == NULL)
2453 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2455 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2457 char *address = NULL;
2458 xmlNodePtr xml_interface;
2460 xml_interface = xml_interfaces->nodeTab[j];
2464 for (xmlNodePtr child = xml_interface->children; child;
2465 child = child->next) {
2466 if (child->type != XML_ELEMENT_NODE)
2469 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2470 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2473 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2474 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2480 if (il_interface_devices &&
2481 (ignore_device_match(il_interface_devices, name, path) != 0 ||
2482 ignore_device_match(il_interface_devices, name, address) != 0))
2485 add_interface_device(state, dom, path, address, j + 1);
2495 xmlXPathFreeObject(xpath_obj);
2497 xmlXPathFreeContext(xpath_ctx);
2499 xmlFreeDoc(xml_doc);
2503 #ifdef HAVE_LIST_ALL_DOMAINS
2504 /* NOTE: domains_active and domains_inactive data will be cleared during
2505 refresh of all domains (inside lv_clean_read_state function) so we need
2506 to free here only allocated arrays */
2508 sfree(domains_inactive);
2515 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2516 " domains=%i block_devices=%i iface_devices=%i",
2517 inst->tag, state->nr_domains, state->nr_block_devices,
2518 state->nr_interface_devices);
2523 static void free_domains(struct lv_read_state *state) {
2524 if (state->domains) {
2525 for (int i = 0; i < state->nr_domains; ++i)
2526 virDomainFree(state->domains[i].ptr);
2527 sfree(state->domains);
2529 state->domains = NULL;
2530 state->nr_domains = 0;
2533 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2536 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2539 new_ptr = realloc(state->domains, new_size);
2541 new_ptr = malloc(new_size);
2543 if (new_ptr == NULL)
2546 state->domains = new_ptr;
2547 state->domains[state->nr_domains].ptr = dom;
2548 state->domains[state->nr_domains].active = active;
2549 memset(&state->domains[state->nr_domains].info, 0,
2550 sizeof(state->domains[state->nr_domains].info));
2552 return state->nr_domains++;
2555 static void free_block_devices(struct lv_read_state *state) {
2556 if (state->block_devices) {
2557 for (int i = 0; i < state->nr_block_devices; ++i)
2558 sfree(state->block_devices[i].path);
2559 sfree(state->block_devices);
2561 state->block_devices = NULL;
2562 state->nr_block_devices = 0;
2565 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2567 struct block_device *new_ptr;
2569 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2572 path_copy = strdup(path);
2576 if (state->block_devices)
2577 new_ptr = realloc(state->block_devices, new_size);
2579 new_ptr = malloc(new_size);
2581 if (new_ptr == NULL) {
2585 state->block_devices = new_ptr;
2586 state->block_devices[state->nr_block_devices].dom = dom;
2587 state->block_devices[state->nr_block_devices].path = path_copy;
2588 return state->nr_block_devices++;
2591 static void free_interface_devices(struct lv_read_state *state) {
2592 if (state->interface_devices) {
2593 for (int i = 0; i < state->nr_interface_devices; ++i) {
2594 sfree(state->interface_devices[i].path);
2595 sfree(state->interface_devices[i].address);
2596 sfree(state->interface_devices[i].number);
2598 sfree(state->interface_devices);
2600 state->interface_devices = NULL;
2601 state->nr_interface_devices = 0;
2604 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2605 const char *path, const char *address,
2606 unsigned int number) {
2607 struct interface_device *new_ptr;
2609 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2610 char *path_copy, *address_copy, number_string[15];
2612 if ((path == NULL) || (address == NULL))
2615 path_copy = strdup(path);
2619 address_copy = strdup(address);
2620 if (!address_copy) {
2625 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2627 if (state->interface_devices)
2628 new_ptr = realloc(state->interface_devices, new_size);
2630 new_ptr = malloc(new_size);
2632 if (new_ptr == NULL) {
2634 sfree(address_copy);
2637 state->interface_devices = new_ptr;
2638 state->interface_devices[state->nr_interface_devices].dom = dom;
2639 state->interface_devices[state->nr_interface_devices].path = path_copy;
2640 state->interface_devices[state->nr_interface_devices].address = address_copy;
2641 state->interface_devices[state->nr_interface_devices].number =
2642 strdup(number_string);
2643 return state->nr_interface_devices++;
2646 static int ignore_device_match(ignorelist_t *il, const char *domname,
2647 const char *devpath) {
2651 if ((domname == NULL) || (devpath == NULL))
2654 n = strlen(domname) + strlen(devpath) + 2;
2657 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2660 snprintf(name, n, "%s:%s", domname, devpath);
2661 r = ignorelist_match(il, name);
2666 static int lv_shutdown(void) {
2667 for (int i = 0; i < nr_instances; ++i) {
2668 lv_fini_instance(i);
2671 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2673 if (!persistent_notification)
2674 stop_event_loop(¬if_thread);
2678 ignorelist_free(il_domains);
2680 ignorelist_free(il_block_devices);
2681 il_block_devices = NULL;
2682 ignorelist_free(il_interface_devices);
2683 il_interface_devices = NULL;
2688 void module_register(void) {
2689 plugin_register_config(PLUGIN_NAME, lv_config, config_keys, NR_CONFIG_KEYS);
2690 plugin_register_init(PLUGIN_NAME, lv_init);
2691 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);