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 static const char *config_keys[] = {"Connection",
118 "BlockDeviceFormatBasename",
125 "PluginInstanceFormat",
129 "PersistentNotification",
132 /* PersistentNotification is false by default */
133 static _Bool persistent_notification = 0;
135 /* libvirt event loop */
136 static pthread_t event_loop_tid;
138 static int domain_event_cb_id;
140 const char *domain_states[] = {
141 [VIR_DOMAIN_NOSTATE] = "no state",
142 [VIR_DOMAIN_RUNNING] = "the domain is running",
143 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
144 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
145 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
146 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
147 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
148 #ifdef HAVE_DOM_STATE_PMSUSPENDED
149 [VIR_DOMAIN_PMSUSPENDED] =
150 "the domain is suspended by guest power management",
154 static int map_domain_event_to_state(int event) {
157 case VIR_DOMAIN_EVENT_STARTED:
158 ret = VIR_DOMAIN_RUNNING;
160 case VIR_DOMAIN_EVENT_SUSPENDED:
161 ret = VIR_DOMAIN_PAUSED;
163 case VIR_DOMAIN_EVENT_RESUMED:
164 ret = VIR_DOMAIN_RUNNING;
166 case VIR_DOMAIN_EVENT_STOPPED:
167 ret = VIR_DOMAIN_SHUTOFF;
169 case VIR_DOMAIN_EVENT_SHUTDOWN:
170 ret = VIR_DOMAIN_SHUTDOWN;
172 #ifdef HAVE_DOM_STATE_PMSUSPENDED
173 case VIR_DOMAIN_EVENT_PMSUSPENDED:
174 ret = VIR_DOMAIN_PMSUSPENDED;
177 #ifdef HAVE_DOM_REASON_CRASHED
178 case VIR_DOMAIN_EVENT_CRASHED:
179 ret = VIR_DOMAIN_CRASHED;
183 ret = VIR_DOMAIN_NOSTATE;
188 #ifdef HAVE_DOM_REASON
189 static int map_domain_event_detail_to_reason(int event, int detail) {
192 case VIR_DOMAIN_EVENT_STARTED:
194 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
195 ret = VIR_DOMAIN_RUNNING_BOOTED;
197 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
199 ret = VIR_DOMAIN_RUNNING_MIGRATED;
201 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
202 ret = VIR_DOMAIN_RUNNING_RESTORED;
204 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
205 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
207 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
208 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
209 ret = VIR_DOMAIN_RUNNING_WAKEUP;
213 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
216 case VIR_DOMAIN_EVENT_SUSPENDED:
218 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
220 ret = VIR_DOMAIN_PAUSED_USER;
222 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
224 ret = VIR_DOMAIN_PAUSED_MIGRATION;
226 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
228 ret = VIR_DOMAIN_PAUSED_IOERROR;
230 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
232 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
234 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
236 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
238 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
240 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
242 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
244 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
246 #ifdef HAVE_DOM_REASON_POSTCOPY
247 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
249 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
251 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
253 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
257 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
260 case VIR_DOMAIN_EVENT_RESUMED:
262 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
264 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
266 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
268 ret = VIR_DOMAIN_RUNNING_MIGRATED;
270 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
271 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
273 #ifdef HAVE_DOM_REASON_POSTCOPY
274 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
275 running in post-copy mode */
276 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
280 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
283 case VIR_DOMAIN_EVENT_STOPPED:
285 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
286 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
288 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
289 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
291 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
292 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
294 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
295 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
297 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
298 ret = VIR_DOMAIN_SHUTOFF_SAVED;
300 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
301 ret = VIR_DOMAIN_SHUTOFF_FAILED;
303 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
304 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
307 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
310 case VIR_DOMAIN_EVENT_SHUTDOWN:
312 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
314 ret = VIR_DOMAIN_SHUTDOWN_USER;
317 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
320 #ifdef HAVE_DOM_STATE_PMSUSPENDED
321 case VIR_DOMAIN_EVENT_PMSUSPENDED:
323 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
325 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
327 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
328 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
331 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
335 case VIR_DOMAIN_EVENT_CRASHED:
337 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
338 ret = VIR_DOMAIN_CRASHED_PANICKED;
341 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
345 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
350 #define DOMAIN_STATE_REASON_MAX_SIZE 20
351 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
352 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
353 "the reason is unknown",
355 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
356 "the reason is unknown",
357 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
358 "normal startup from boot",
359 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
360 "migrated from another host",
361 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
362 "restored from a state file",
363 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
364 "restored from snapshot",
365 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
366 "returned from paused state",
367 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
368 "returned from migration",
369 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
370 "returned from failed save process",
371 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
372 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
373 "returned from pmsuspended due to wakeup event",
375 #ifdef HAVE_DOM_REASON_CRASHED
376 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
377 "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] =
384 "the reason is unknown",
386 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
387 "the reason is unknown",
388 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
389 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
390 "paused for offline migration",
391 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
393 "paused for offline core dump",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
395 "paused due to a disk I/O error",
396 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
397 "paused due to a watchdog event",
398 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
399 "paused after restoring from snapshot",
400 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
401 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
402 "paused during shutdown process",
404 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
405 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
406 "paused while creating a snapshot",
408 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
409 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
410 "paused due to a guest crash",
412 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
413 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
414 "the domain is being started",
416 #ifdef HAVE_DOM_REASON_POSTCOPY
417 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
418 "paused for post-copy migration",
419 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
420 "paused after failed post-copy",
422 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
423 "the reason is unknown",
424 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
425 "shutting down on user request",
427 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
428 "the reason is unknown",
429 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
430 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
431 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
432 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
433 "migrated to another host",
434 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
435 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
436 "domain failed to start",
437 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
438 "restored from a snapshot which was taken while domain was shutoff",
440 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
441 "the reason is unknown",
442 #ifdef VIR_DOMAIN_CRASHED_PANICKED
443 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
446 #ifdef HAVE_DOM_STATE_PMSUSPENDED
447 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
448 "the reason is unknown",
451 #endif /* HAVE_DOM_REASON */
453 #define NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
454 #define NANOSEC_IN_SEC 1e9
456 #define GET_STATS(_f, _name, ...) \
458 status = _f(__VA_ARGS__); \
460 ERROR(PLUGIN_NAME ": Failed to get " _name); \
464 static virConnectPtr conn = 0;
465 static char *conn_string = NULL;
466 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
468 /* Node information required for %CPU */
469 static virNodeInfo nodeinfo;
471 /* Seconds between list refreshes, 0 disables completely. */
472 static int interval = 60;
474 /* List of domains, if specified. */
475 static ignorelist_t *il_domains = NULL;
476 /* List of block devices, if specified. */
477 static ignorelist_t *il_block_devices = NULL;
478 /* List of network interface devices, if specified. */
479 static ignorelist_t *il_interface_devices = NULL;
481 static int ignore_device_match(ignorelist_t *, const char *domname,
482 const char *devpath);
484 /* Actual list of block devices found on last refresh. */
485 struct block_device {
486 virDomainPtr dom; /* domain */
487 char *path; /* name of block device */
490 /* Actual list of network interfaces found on last refresh. */
491 struct interface_device {
492 virDomainPtr dom; /* domain */
493 char *path; /* name of interface device */
494 char *address; /* mac address of interface device */
495 char *number; /* interface device number */
498 typedef struct domain_s {
504 struct lv_read_state {
505 /* Actual list of domains found on last refresh. */
509 struct block_device *block_devices;
510 int nr_block_devices;
512 struct interface_device *interface_devices;
513 int nr_interface_devices;
516 static void free_domains(struct lv_read_state *state);
517 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
520 static void free_block_devices(struct lv_read_state *state);
521 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
524 static void free_interface_devices(struct lv_read_state *state);
525 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
526 const char *path, const char *address,
527 unsigned int number);
529 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
530 #define METADATA_VM_PARTITION_ELEMENT "tag"
531 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
533 #define BUFFER_MAX_LEN 256
534 #define PARTITION_TAG_MAX_LEN 32
536 struct lv_read_instance {
537 struct lv_read_state read_state;
538 char tag[PARTITION_TAG_MAX_LEN];
542 struct lv_user_data {
543 struct lv_read_instance inst;
547 #define NR_INSTANCES_DEFAULT 1
548 #define NR_INSTANCES_MAX 128
549 static int nr_instances = NR_INSTANCES_DEFAULT;
550 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
552 /* HostnameFormat. */
553 #define HF_MAX_FIELDS 3
555 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid };
557 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
559 /* PluginInstanceFormat */
560 #define PLGINST_MAX_FIELDS 2
562 enum plginst_field { plginst_none = 0, plginst_name, plginst_uuid };
564 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
567 /* BlockDeviceFormat */
568 enum bd_field { target, source };
570 /* InterfaceFormat. */
571 enum if_field { if_address, if_name, if_number };
574 #define EX_STATS_MAX_FIELDS 15
577 ex_stats_disk = 1 << 0,
578 ex_stats_pcpu = 1 << 1,
579 ex_stats_cpu_util = 1 << 2,
580 ex_stats_domain_state = 1 << 3,
581 #ifdef HAVE_PERF_STATS
582 ex_stats_perf = 1 << 4,
584 ex_stats_vcpupin = 1 << 5,
586 ex_stats_disk_err = 1 << 6,
589 ex_stats_fs_info = 1 << 7,
591 #ifdef HAVE_JOB_STATS
592 ex_stats_job_stats_completed = 1 << 8,
593 ex_stats_job_stats_background = 1 << 9,
597 static unsigned int extra_stats = ex_stats_none;
599 struct ex_stats_item {
603 static const struct ex_stats_item ex_stats_table[] = {
604 {"disk", ex_stats_disk},
605 {"pcpu", ex_stats_pcpu},
606 {"cpu_util", ex_stats_cpu_util},
607 {"domain_state", ex_stats_domain_state},
608 #ifdef HAVE_PERF_STATS
609 {"perf", ex_stats_perf},
611 {"vcpupin", ex_stats_vcpupin},
613 {"disk_err", ex_stats_disk_err},
616 {"fs_info", ex_stats_fs_info},
618 #ifdef HAVE_JOB_STATS
619 {"job_stats_completed", ex_stats_job_stats_completed},
620 {"job_stats_background", ex_stats_job_stats_background},
622 {NULL, ex_stats_none},
625 /* BlockDeviceFormatBasename */
626 _Bool blockdevice_format_basename = 0;
627 static enum bd_field blockdevice_format = target;
628 static enum if_field interface_format = if_name;
630 /* Time that we last refreshed. */
631 static time_t last_refresh = (time_t)0;
633 static int refresh_lists(struct lv_read_instance *inst);
637 unsigned long long total_user_cpu_time;
638 unsigned long long total_syst_cpu_time;
641 struct lv_block_info {
642 virDomainBlockStatsStruct bi;
644 long long rd_total_times;
645 long long wr_total_times;
648 long long fl_total_times;
651 static void init_block_info(struct lv_block_info *binfo) {
655 binfo->bi.rd_req = -1;
656 binfo->bi.wr_req = -1;
657 binfo->bi.rd_bytes = -1;
658 binfo->bi.wr_bytes = -1;
660 binfo->rd_total_times = -1;
661 binfo->wr_total_times = -1;
663 binfo->fl_total_times = -1;
666 #ifdef HAVE_BLOCK_STATS_FLAGS
668 #define GET_BLOCK_INFO_VALUE(NAME, FIELD) \
669 if (!strcmp(param[i].field, NAME)) { \
670 binfo->FIELD = param[i].value.l; \
674 static int get_block_info(struct lv_block_info *binfo,
675 virTypedParameterPtr param, int nparams) {
676 if (binfo == NULL || param == NULL)
679 for (int i = 0; i < nparams; ++i) {
680 /* ignore type. Everything must be LLONG anyway. */
681 GET_BLOCK_INFO_VALUE("rd_operations", bi.rd_req);
682 GET_BLOCK_INFO_VALUE("wr_operations", bi.wr_req);
683 GET_BLOCK_INFO_VALUE("rd_bytes", bi.rd_bytes);
684 GET_BLOCK_INFO_VALUE("wr_bytes", bi.wr_bytes);
685 GET_BLOCK_INFO_VALUE("rd_total_times", rd_total_times);
686 GET_BLOCK_INFO_VALUE("wr_total_times", wr_total_times);
687 GET_BLOCK_INFO_VALUE("flush_operations", fl_req);
688 GET_BLOCK_INFO_VALUE("flush_total_times", fl_total_times);
694 #undef GET_BLOCK_INFO_VALUE
696 #endif /* HAVE_BLOCK_STATS_FLAGS */
698 /* ERROR(...) macro for virterrors. */
699 #define VIRT_ERROR(conn, s) \
702 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
704 ERROR("%s: %s", (s), err->message); \
707 static void init_lv_info(struct lv_info *info) {
709 memset(info, 0, sizeof(*info));
712 static int lv_domain_info(virDomainPtr dom, struct lv_info *info) {
713 #ifdef HAVE_CPU_STATS
714 virTypedParameterPtr param = NULL;
716 #endif /* HAVE_CPU_STATS */
717 int ret = virDomainGetInfo(dom, &(info->di));
722 #ifdef HAVE_CPU_STATS
723 nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
725 VIRT_ERROR(conn, "getting the CPU params count");
729 param = calloc(nparams, sizeof(virTypedParameter));
731 ERROR("virt plugin: alloc(%i) for cpu parameters failed.", nparams);
735 ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
737 virTypedParamsClear(param, nparams);
739 VIRT_ERROR(conn, "getting the disk params values");
743 for (int i = 0; i < nparams; ++i) {
744 if (!strcmp(param[i].field, "user_time"))
745 info->total_user_cpu_time = param[i].value.ul;
746 else if (!strcmp(param[i].field, "system_time"))
747 info->total_syst_cpu_time = param[i].value.ul;
750 virTypedParamsClear(param, nparams);
752 #endif /* HAVE_CPU_STATS */
757 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
759 char uuid[VIR_UUID_STRING_BUFLEN];
761 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
765 /* Construct the hostname field according to HostnameFormat. */
766 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
767 if (hostname_format[i] == hf_none)
771 SSTRNCAT(vl->host, ":", sizeof(vl->host));
773 switch (hostname_format[i]) {
777 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
780 name = virDomainGetName(dom);
782 SSTRNCAT(vl->host, name, sizeof(vl->host));
785 if (virDomainGetUUIDString(dom, uuid) == 0)
786 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
791 /* Construct the plugin instance field according to PluginInstanceFormat. */
792 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
793 if (plugin_instance_format[i] == plginst_none)
797 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
799 switch (plugin_instance_format[i]) {
803 name = virDomainGetName(dom);
805 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
808 if (virDomainGetUUIDString(dom, uuid) == 0)
809 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
814 } /* void init_value_list */
816 static int init_notif(notification_t *notif, const virDomainPtr domain,
817 int severity, const char *msg, const char *type,
818 const char *type_instance) {
819 value_list_t vl = VALUE_LIST_INIT;
822 ERROR(PLUGIN_NAME ": init_notif: NULL pointer");
826 init_value_list(&vl, domain);
827 notification_init(notif, severity, msg, vl.host, vl.plugin,
828 vl.plugin_instance, type, type_instance);
829 notif->time = cdtime();
833 static void submit_notif(const virDomainPtr domain, int severity,
834 const char *msg, const char *type,
835 const char *type_instance) {
836 notification_t notif;
838 init_notif(¬if, domain, severity, msg, type, type_instance);
839 plugin_dispatch_notification(¬if);
841 plugin_notification_meta_free(notif.meta);
844 static void submit(virDomainPtr dom, char const *type,
845 char const *type_instance, value_t *values,
847 value_list_t vl = VALUE_LIST_INIT;
848 init_value_list(&vl, dom);
851 vl.values_len = values_len;
853 sstrncpy(vl.type, type, sizeof(vl.type));
854 if (type_instance != NULL)
855 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
857 plugin_dispatch_values(&vl);
860 static void memory_submit(virDomainPtr dom, gauge_t value) {
861 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
864 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
866 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
867 "minor_fault", "unused", "available",
868 "actual_balloon", "rss", "usable",
871 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
872 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
876 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
879 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
880 virDomainPtr dom, const char *devname) {
882 {.derive = v0}, {.derive = v1},
885 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
886 } /* void submit_derive2 */
888 static void pcpu_submit(virDomainPtr dom, struct lv_info *info) {
889 #ifdef HAVE_CPU_STATS
890 if (extra_stats & ex_stats_pcpu)
891 submit_derive2("ps_cputime", info->total_user_cpu_time,
892 info->total_syst_cpu_time, dom, NULL);
893 #endif /* HAVE_CPU_STATS */
896 static double cpu_ns_to_percent(unsigned int node_cpus,
897 unsigned long long cpu_time_old,
898 unsigned long long cpu_time_new) {
899 double percent = 0.0;
900 unsigned long long cpu_time_diff = 0;
901 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
903 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
904 cpu_time_diff = cpu_time_new - cpu_time_old;
905 percent = ((double)(100 * cpu_time_diff)) /
906 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
909 DEBUG(PLUGIN_NAME ": node_cpus=%u cpu_time_old=%" PRIu64
910 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
911 " time_diff_sec=%f percent=%f",
912 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
913 (uint64_t)cpu_time_diff, time_diff_sec, percent);
918 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
923 if (extra_stats & ex_stats_cpu_util) {
924 /* Computing %CPU requires 2 samples of cpuTime */
925 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
927 submit(dom->ptr, "percent", "virt_cpu_total",
928 &(value_t){.gauge = cpu_ns_to_percent(
929 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
934 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
938 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
940 char type_instance[DATA_MAX_NAME_LEN];
942 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
943 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
946 static void disk_submit(struct lv_block_info *binfo, virDomainPtr dom,
948 char *dev_copy = strdup(dev);
949 const char *type_instance = dev_copy;
954 if (blockdevice_format_basename && blockdevice_format == source)
955 type_instance = basename(dev_copy);
957 if (!type_instance) {
962 char flush_type_instance[DATA_MAX_NAME_LEN];
963 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
966 if ((binfo->bi.rd_req != -1) && (binfo->bi.wr_req != -1))
967 submit_derive2("disk_ops", (derive_t)binfo->bi.rd_req,
968 (derive_t)binfo->bi.wr_req, dom, type_instance);
970 if ((binfo->bi.rd_bytes != -1) && (binfo->bi.wr_bytes != -1))
971 submit_derive2("disk_octets", (derive_t)binfo->bi.rd_bytes,
972 (derive_t)binfo->bi.wr_bytes, dom, type_instance);
974 if (extra_stats & ex_stats_disk) {
975 if ((binfo->rd_total_times != -1) && (binfo->wr_total_times != -1))
976 submit_derive2("disk_time", (derive_t)binfo->rd_total_times,
977 (derive_t)binfo->wr_total_times, dom, type_instance);
979 if (binfo->fl_req != -1)
980 submit(dom, "total_requests", flush_type_instance,
981 &(value_t){.derive = (derive_t)binfo->fl_req}, 1);
982 if (binfo->fl_total_times != -1) {
983 derive_t value = binfo->fl_total_times / 1000; // ns -> ms
984 submit(dom, "total_time_in_ms", flush_type_instance,
985 &(value_t){.derive = value}, 1);
992 static unsigned int parse_ex_stats_flags(char **exstats, int numexstats) {
993 unsigned int ex_stats_flags = ex_stats_none;
994 for (int i = 0; i < numexstats; i++) {
995 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
996 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
997 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
998 ex_stats_table[j].name);
999 ex_stats_flags |= ex_stats_table[j].flag;
1003 if (ex_stats_table[j + 1].name == NULL) {
1004 ERROR(PLUGIN_NAME ": Unmatched ExtraStats option: %s", exstats[i]);
1008 return ex_stats_flags;
1011 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1012 if ((state < 0) || (state >= STATIC_ARRAY_SIZE(domain_states))) {
1013 ERROR(PLUGIN_NAME ": Array index out of bounds: state=%d", state);
1017 char msg[DATA_MAX_NAME_LEN];
1018 const char *state_str = domain_states[state];
1019 #ifdef HAVE_DOM_REASON
1020 if ((reason < 0) || (reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1021 ERROR(PLUGIN_NAME ": Array index out of bounds: reason=%d", reason);
1025 const char *reason_str = domain_reasons[state][reason];
1026 /* Array size for domain reasons is fixed, but different domain states can
1027 * have different number of reasons. We need to check if reason was
1028 * successfully parsed */
1030 ERROR(PLUGIN_NAME ": Invalid reason (%d) for domain state: %s", reason,
1035 const char *reason_str = "N/A";
1038 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1043 case VIR_DOMAIN_NOSTATE:
1044 case VIR_DOMAIN_RUNNING:
1045 case VIR_DOMAIN_SHUTDOWN:
1046 case VIR_DOMAIN_SHUTOFF:
1047 severity = NOTIF_OKAY;
1049 case VIR_DOMAIN_BLOCKED:
1050 case VIR_DOMAIN_PAUSED:
1051 #ifdef DOM_STATE_PMSUSPENDED
1052 case VIR_DOMAIN_PMSUSPENDED:
1054 severity = NOTIF_WARNING;
1056 case VIR_DOMAIN_CRASHED:
1057 severity = NOTIF_FAILURE;
1060 ERROR(PLUGIN_NAME ": Unrecognized domain state (%d)", state);
1063 submit_notif(dom, severity, msg, "domain_state", NULL);
1066 static int lv_config(const char *key, const char *value) {
1067 if (virInitialize() != 0)
1070 if (il_domains == NULL)
1071 il_domains = ignorelist_create(1);
1072 if (il_block_devices == NULL)
1073 il_block_devices = ignorelist_create(1);
1074 if (il_interface_devices == NULL)
1075 il_interface_devices = ignorelist_create(1);
1077 if (strcasecmp(key, "Connection") == 0) {
1078 char *tmp = strdup(value);
1080 ERROR(PLUGIN_NAME " plugin: Connection strdup failed.");
1088 if (strcasecmp(key, "RefreshInterval") == 0) {
1090 interval = strtol(value, &eptr, 10);
1091 if (eptr == NULL || *eptr != '\0')
1096 if (strcasecmp(key, "Domain") == 0) {
1097 if (ignorelist_add(il_domains, value))
1101 if (strcasecmp(key, "BlockDevice") == 0) {
1102 if (ignorelist_add(il_block_devices, value))
1107 if (strcasecmp(key, "BlockDeviceFormat") == 0) {
1108 if (strcasecmp(value, "target") == 0)
1109 blockdevice_format = target;
1110 else if (strcasecmp(value, "source") == 0)
1111 blockdevice_format = source;
1113 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s", value);
1118 if (strcasecmp(key, "BlockDeviceFormatBasename") == 0) {
1119 blockdevice_format_basename = IS_TRUE(value);
1122 if (strcasecmp(key, "InterfaceDevice") == 0) {
1123 if (ignorelist_add(il_interface_devices, value))
1128 if (strcasecmp(key, "IgnoreSelected") == 0) {
1129 if (IS_TRUE(value)) {
1130 ignorelist_set_invert(il_domains, 0);
1131 ignorelist_set_invert(il_block_devices, 0);
1132 ignorelist_set_invert(il_interface_devices, 0);
1134 ignorelist_set_invert(il_domains, 1);
1135 ignorelist_set_invert(il_block_devices, 1);
1136 ignorelist_set_invert(il_interface_devices, 1);
1141 if (strcasecmp(key, "HostnameFormat") == 0) {
1143 char *fields[HF_MAX_FIELDS];
1146 value_copy = strdup(value);
1147 if (value_copy == NULL) {
1148 ERROR(PLUGIN_NAME " plugin: strdup failed.");
1152 n = strsplit(value_copy, fields, HF_MAX_FIELDS);
1155 ERROR(PLUGIN_NAME " plugin: HostnameFormat: no fields");
1159 for (int i = 0; i < n; ++i) {
1160 if (strcasecmp(fields[i], "hostname") == 0)
1161 hostname_format[i] = hf_hostname;
1162 else if (strcasecmp(fields[i], "name") == 0)
1163 hostname_format[i] = hf_name;
1164 else if (strcasecmp(fields[i], "uuid") == 0)
1165 hostname_format[i] = hf_uuid;
1167 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1175 for (int i = n; i < HF_MAX_FIELDS; ++i)
1176 hostname_format[i] = hf_none;
1181 if (strcasecmp(key, "PluginInstanceFormat") == 0) {
1183 char *fields[PLGINST_MAX_FIELDS];
1186 value_copy = strdup(value);
1187 if (value_copy == NULL) {
1188 ERROR(PLUGIN_NAME " plugin: strdup failed.");
1192 n = strsplit(value_copy, fields, PLGINST_MAX_FIELDS);
1195 ERROR(PLUGIN_NAME " plugin: PluginInstanceFormat: no fields");
1199 for (int i = 0; i < n; ++i) {
1200 if (strcasecmp(fields[i], "none") == 0) {
1201 plugin_instance_format[i] = plginst_none;
1203 } else if (strcasecmp(fields[i], "name") == 0)
1204 plugin_instance_format[i] = plginst_name;
1205 else if (strcasecmp(fields[i], "uuid") == 0)
1206 plugin_instance_format[i] = plginst_uuid;
1208 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1216 for (int i = n; i < PLGINST_MAX_FIELDS; ++i)
1217 plugin_instance_format[i] = plginst_none;
1222 if (strcasecmp(key, "InterfaceFormat") == 0) {
1223 if (strcasecmp(value, "name") == 0)
1224 interface_format = if_name;
1225 else if (strcasecmp(value, "address") == 0)
1226 interface_format = if_address;
1227 else if (strcasecmp(value, "number") == 0)
1228 interface_format = if_number;
1230 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", value);
1236 if (strcasecmp(key, "Instances") == 0) {
1238 double val = strtod(value, &eptr);
1240 if (*eptr != '\0') {
1241 ERROR(PLUGIN_NAME " plugin: Invalid value for Instances = '%s'", value);
1245 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1248 if (val > NR_INSTANCES_MAX) {
1249 ERROR(PLUGIN_NAME " plugin: Instances=%f > NR_INSTANCES_MAX=%i"
1250 " use a lower setting or recompile the plugin.",
1251 val, NR_INSTANCES_MAX);
1255 nr_instances = (int)val;
1256 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1260 if (strcasecmp(key, "ExtraStats") == 0) {
1261 char *localvalue = strdup(value);
1262 if (localvalue != NULL) {
1263 char *exstats[EX_STATS_MAX_FIELDS];
1265 strsplit(localvalue, exstats, STATIC_ARRAY_SIZE(exstats));
1266 extra_stats = parse_ex_stats_flags(exstats, numexstats);
1269 #ifdef HAVE_JOB_STATS
1270 if ((extra_stats & ex_stats_job_stats_completed) &&
1271 (extra_stats & ex_stats_job_stats_background)) {
1272 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1273 "type of job statistics can be collected at the same "
1281 if (strcasecmp(key, "PersistentNotification") == 0) {
1282 persistent_notification = IS_TRUE(value);
1286 /* Unrecognised option. */
1290 static int lv_connect(void) {
1292 /* `conn_string == NULL' is acceptable */
1294 /* virDomainGetFSInfo requires full read-write access connection */
1295 if (extra_stats & ex_stats_fs_info)
1296 conn = virConnectOpen(conn_string);
1299 conn = virConnectOpenReadOnly(conn_string);
1301 c_complain(LOG_ERR, &conn_complain,
1302 PLUGIN_NAME " plugin: Unable to connect: "
1303 "virConnectOpen failed.");
1306 int status = virNodeGetInfo(conn, &nodeinfo);
1308 ERROR(PLUGIN_NAME ": virNodeGetInfo failed");
1312 c_release(LOG_NOTICE, &conn_complain,
1313 PLUGIN_NAME " plugin: Connection established.");
1317 static void lv_disconnect(void) {
1319 virConnectClose(conn);
1321 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1324 static int lv_domain_block_info(virDomainPtr dom, const char *path,
1325 struct lv_block_info *binfo) {
1326 #ifdef HAVE_BLOCK_STATS_FLAGS
1328 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1330 VIRT_ERROR(conn, "getting the disk params count");
1334 virTypedParameterPtr params = calloc((size_t)nparams, sizeof(*params));
1335 if (params == NULL) {
1336 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1342 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1343 VIRT_ERROR(conn, "getting the disk params values");
1345 rc = get_block_info(binfo, params, nparams);
1348 virTypedParamsClear(params, nparams);
1352 return virDomainBlockStats(dom, path, &(binfo->bi), sizeof(binfo->bi));
1353 #endif /* HAVE_BLOCK_STATS_FLAGS */
1356 #ifdef HAVE_PERF_STATS
1357 static void perf_submit(virDomainStatsRecordPtr stats) {
1358 for (int i = 0; i < stats->nparams; ++i) {
1359 /* Replace '.' with '_' in event field to match other metrics' naming
1361 char *c = strchr(stats->params[i].field, '.');
1364 submit(stats->dom, "perf", stats->params[i].field,
1365 &(value_t){.derive = stats->params[i].value.ul}, 1);
1369 static int get_perf_events(virDomainPtr domain) {
1370 virDomainStatsRecordPtr *stats = NULL;
1371 /* virDomainListGetStats requires a NULL terminated list of domains */
1372 virDomainPtr domain_array[] = {domain, NULL};
1375 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1377 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1381 for (int i = 0; i < status; ++i)
1382 perf_submit(stats[i]);
1384 virDomainStatsRecordListFree(stats);
1387 #endif /* HAVE_PERF_STATS */
1389 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1390 unsigned char *cpu_maps, int cpu_map_len) {
1391 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1392 char type_instance[DATA_MAX_NAME_LEN];
1393 _Bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu) ? 1 : 0;
1395 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1396 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1400 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1401 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1402 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1404 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(vinfo[0]));
1405 if (vinfo == NULL) {
1406 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1410 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1411 if (cpumaps == NULL) {
1412 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1418 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1420 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1427 for (int i = 0; i < nr_virt_cpu; ++i) {
1428 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1429 if (extra_stats & ex_stats_vcpupin)
1430 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1438 #ifdef HAVE_DOM_REASON
1440 static void domain_state_submit(virDomainPtr dom, int state, int reason) {
1441 value_t values[] = {
1442 {.gauge = (gauge_t)state}, {.gauge = (gauge_t)reason},
1445 submit(dom, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1448 static int get_domain_state(virDomainPtr domain) {
1449 int domain_state = 0;
1450 int domain_reason = 0;
1452 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1454 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1459 domain_state_submit(domain, domain_state, domain_reason);
1464 #ifdef HAVE_LIST_ALL_DOMAINS
1465 static int get_domain_state_notify(virDomainPtr domain) {
1466 int domain_state = 0;
1467 int domain_reason = 0;
1469 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1471 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1476 if (persistent_notification)
1477 domain_state_submit_notif(domain, domain_state, domain_reason);
1481 #endif /* HAVE_LIST_ALL_DOMAINS */
1482 #endif /* HAVE_DOM_REASON */
1484 static int get_memory_stats(virDomainPtr domain) {
1485 virDomainMemoryStatPtr minfo =
1486 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(virDomainMemoryStatStruct));
1487 if (minfo == NULL) {
1488 ERROR("virt plugin: malloc failed.");
1493 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1494 if (mem_stats < 0) {
1495 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1501 for (int i = 0; i < mem_stats; i++)
1502 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1508 #ifdef HAVE_DISK_ERR
1509 static void disk_err_submit(virDomainPtr domain,
1510 virDomainDiskErrorPtr disk_err) {
1511 submit(domain, "disk_error", disk_err->disk,
1512 &(value_t){.gauge = disk_err->error}, 1);
1515 static int get_disk_err(virDomainPtr domain) {
1516 /* Get preferred size of disk errors array */
1517 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1518 if (disk_err_count == -1) {
1520 " plugin: failed to get preferred size of disk errors array");
1525 " plugin: preferred size of disk errors array: %d for domain %s",
1526 disk_err_count, virDomainGetName(domain));
1527 virDomainDiskError disk_err[disk_err_count];
1529 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1530 if (disk_err_count == -1) {
1531 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1536 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1537 disk_err_count, virDomainGetName(domain));
1539 for (int i = 0; i < disk_err_count; ++i) {
1540 disk_err_submit(domain, &disk_err[i]);
1541 sfree(disk_err[i].disk);
1546 #endif /* HAVE_DISK_ERR */
1548 static int get_block_stats(struct block_device *block_dev) {
1551 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1555 struct lv_block_info binfo;
1556 init_block_info(&binfo);
1558 if (lv_domain_block_info(block_dev->dom, block_dev->path, &binfo) < 0) {
1559 ERROR(PLUGIN_NAME " plugin: lv_domain_block_info failed");
1563 disk_submit(&binfo, block_dev->dom, block_dev->path);
1569 #define NM_ADD_ITEM(_fun, _name, _val) \
1571 ret = _fun(¬if, _name, _val); \
1573 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1578 #define NM_ADD_STR_ITEMS(_items, _size) \
1580 for (int _i = 0; _i < _size; ++_i) { \
1582 " plugin: Adding notification metadata name=%s value=%s", \
1583 _items[_i].name, _items[_i].value); \
1584 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1585 _items[_i].value); \
1589 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1590 notification_t notif;
1593 /* Local struct, just for the purpose of this function. */
1594 typedef struct nm_str_item_s {
1599 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1600 nm_str_item_t fs_str_items[] = {
1601 {.name = "mountpoint", .value = fs_info->mountpoint},
1602 {.name = "name", .value = fs_info->name},
1603 {.name = "fstype", .value = fs_info->fstype}};
1605 for (int i = 0; i < fs_info->ndevAlias; ++i) {
1606 fs_dev_alias[i].name = "devAlias";
1607 fs_dev_alias[i].value = fs_info->devAlias[i];
1610 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1611 "file_system", NULL);
1612 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1613 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1614 fs_info->ndevAlias);
1615 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1617 plugin_dispatch_notification(¬if);
1621 plugin_notification_meta_free(notif.meta);
1625 #undef RETURN_ON_ERR
1626 #undef NM_ADD_STR_ITEMS
1628 static int get_fs_info(virDomainPtr domain) {
1629 virDomainFSInfoPtr *fs_info = NULL;
1632 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1633 if (mount_points_cnt == -1) {
1634 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1636 return mount_points_cnt;
1639 for (int i = 0; i < mount_points_cnt; ++i) {
1640 if (fs_info_notify(domain, fs_info[i]) != 0) {
1641 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1642 "for mount point %s",
1643 fs_info[i]->mountpoint);
1646 virDomainFSInfoFree(fs_info[i]);
1653 #endif /* HAVE_FS_INFO */
1655 #ifdef HAVE_JOB_STATS
1656 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1659 if (param->type == VIR_TYPED_PARAM_INT)
1660 vl.derive = param->value.i;
1661 else if (param->type == VIR_TYPED_PARAM_UINT)
1662 vl.derive = param->value.ui;
1663 else if (param->type == VIR_TYPED_PARAM_LLONG)
1664 vl.derive = param->value.l;
1665 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1666 vl.derive = param->value.ul;
1667 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1668 vl.derive = param->value.d;
1669 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1670 vl.derive = param->value.b;
1671 else if (param->type == VIR_TYPED_PARAM_STRING) {
1672 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1675 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1679 submit(domain, "job_stats", param->field, &vl, 1);
1682 static int get_job_stats(virDomainPtr domain) {
1686 virTypedParameterPtr params = NULL;
1687 int flags = (extra_stats & ex_stats_job_stats_completed)
1688 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1691 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1693 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1697 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1699 for (int i = 0; i < nparams; ++i) {
1700 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1702 job_stats_submit(domain, ¶ms[i]);
1705 virTypedParamsFree(params, nparams);
1708 #endif /* HAVE_JOB_STATS */
1710 static int get_domain_metrics(domain_t *domain) {
1711 struct lv_info info;
1713 if (!domain || !domain->ptr) {
1714 ERROR(PLUGIN_NAME ": get_domain_metrics: NULL pointer");
1718 init_lv_info(&info);
1719 int status = lv_domain_info(domain->ptr, &info);
1721 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1726 if (extra_stats & ex_stats_domain_state) {
1727 #ifdef HAVE_DOM_REASON
1728 /* At this point we already know domain's state from virDomainGetInfo call,
1729 * however it doesn't provide a reason for entering particular state.
1730 * We need to get it from virDomainGetState.
1732 GET_STATS(get_domain_state, "domain reason", domain->ptr);
1736 /* Gather remaining stats only for running domains */
1737 if (info.di.state != VIR_DOMAIN_RUNNING)
1740 pcpu_submit(domain->ptr, &info);
1741 cpu_submit(domain, info.di.cpuTime);
1743 memory_submit(domain->ptr, (gauge_t)info.di.memory * 1024);
1745 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.di.nrVirtCpu);
1746 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
1748 #ifdef HAVE_PERF_STATS
1749 if (extra_stats & ex_stats_perf)
1750 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
1754 if (extra_stats & ex_stats_fs_info)
1755 GET_STATS(get_fs_info, "file system info", domain->ptr);
1758 #ifdef HAVE_DISK_ERR
1759 if (extra_stats & ex_stats_disk_err)
1760 GET_STATS(get_disk_err, "disk errors", domain->ptr);
1763 #ifdef HAVE_JOB_STATS
1765 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
1766 GET_STATS(get_job_stats, "job stats", domain->ptr);
1769 /* Update cached virDomainInfo. It has to be done after cpu_submit */
1770 memcpy(&domain->info, &info.di, sizeof(domain->info));
1775 static int get_if_dev_stats(struct interface_device *if_dev) {
1776 virDomainInterfaceStatsStruct stats = {0};
1777 char *display_name = NULL;
1780 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
1784 switch (interface_format) {
1786 display_name = if_dev->address;
1789 display_name = if_dev->number;
1793 display_name = if_dev->path;
1796 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
1797 sizeof(stats)) != 0) {
1798 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
1802 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
1803 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
1804 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
1806 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
1807 submit_derive2("if_packets", (derive_t)stats.rx_packets,
1808 (derive_t)stats.tx_packets, if_dev->dom, display_name);
1810 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
1811 submit_derive2("if_errors", (derive_t)stats.rx_errs,
1812 (derive_t)stats.tx_errs, if_dev->dom, display_name);
1814 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
1815 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
1816 (derive_t)stats.tx_drop, if_dev->dom, display_name);
1820 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr conn,
1821 virDomainPtr dom, int event, int detail,
1822 __attribute__((unused)) void *opaque) {
1823 int domain_state = map_domain_event_to_state(event);
1824 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
1825 #ifdef HAVE_DOM_REASON
1826 domain_reason = map_domain_event_detail_to_reason(event, detail);
1828 domain_state_submit_notif(dom, domain_state, domain_reason);
1833 static int register_event_impl(void) {
1834 if (virEventRegisterDefaultImpl() < 0) {
1835 virErrorPtr err = virGetLastError();
1837 " plugin: error while event implementation registering: %s",
1838 err && err->message ? err->message : "Unknown error");
1845 /* worker function running default event implementation */
1846 static void *event_loop_worker(__attribute__((unused)) void *arg) {
1848 if (virEventRunDefaultImpl() < 0) {
1849 virErrorPtr err = virGetLastError();
1850 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
1851 err && err->message ? err->message : "Unknown error");
1858 /* register domain event callback and start event loop thread */
1859 static int start_event_loop(void) {
1860 domain_event_cb_id = virConnectDomainEventRegisterAny(
1861 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
1862 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
1863 if (domain_event_cb_id == -1) {
1864 ERROR(PLUGIN_NAME " plugin: error while callback registering");
1868 if (pthread_create(&event_loop_tid, NULL, event_loop_worker, NULL)) {
1869 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
1870 virConnectDomainEventDeregisterAny(conn, domain_event_cb_id);
1877 /* stop event loop thread and deregister callback */
1878 static void stop_event_loop(void) {
1879 if (pthread_cancel(event_loop_tid) != 0)
1880 ERROR(PLUGIN_NAME " plugin: cancelling thread %lu failed", event_loop_tid);
1882 if (pthread_join(event_loop_tid, NULL) != 0)
1883 ERROR(PLUGIN_NAME " plugin: stopping thread %lu failed", event_loop_tid);
1885 if (conn != NULL && domain_event_cb_id != -1)
1886 virConnectDomainEventDeregisterAny(conn, domain_event_cb_id);
1889 static int persistent_domains_state_notification(void) {
1892 #ifdef HAVE_LIST_ALL_DOMAINS
1893 virDomainPtr *domains = NULL;
1894 n = virConnectListAllDomains(conn, &domains,
1895 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
1897 VIRT_ERROR(conn, "reading list of persistent domains");
1900 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
1901 /* Fetch each persistent domain's state and notify it */
1903 for (int i = 0; i < n; ++i) {
1904 status = get_domain_state_notify(domains[i]);
1907 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
1908 virDomainGetName(domains[i]));
1910 virDomainFree(domains[i]);
1914 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
1918 n = virConnectNumOfDomains(conn);
1921 /* Get list of domains. */
1922 domids = malloc(sizeof(*domids) * n);
1923 if (domids == NULL) {
1924 ERROR(PLUGIN_NAME " plugin: malloc failed.");
1927 n = virConnectListDomains(conn, domids, n);
1929 VIRT_ERROR(conn, "reading list of domains");
1933 /* Fetch info of each active domain and notify it */
1934 for (int i = 0; i < n; ++i) {
1936 virDomainPtr dom = NULL;
1937 dom = virDomainLookupByID(conn, domids[i]);
1939 VIRT_ERROR(conn, "virDomainLookupByID");
1940 /* Could be that the domain went away -- ignore it anyway. */
1943 status = virDomainGetInfo(dom, &info);
1945 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
1949 /* virDomainGetState is not available. Submit 0, which corresponds to
1950 * unknown reason. */
1951 domain_state_submit_notif(dom, info.state, 0);
1960 static int lv_read(user_data_t *ud) {
1962 struct lv_read_instance *inst = NULL;
1963 struct lv_read_state *state = NULL;
1965 if (ud->data == NULL) {
1966 ERROR(PLUGIN_NAME " plugin: NULL userdata");
1971 state = &inst->read_state;
1973 _Bool reconnect = conn == NULL ? 1 : 0;
1974 /* event implementation must be registered before connection is opened */
1975 if (inst->id == 0) {
1976 if (!persistent_notification && reconnect)
1977 if (register_event_impl() != 0)
1980 if (lv_connect() < 0)
1983 if (!persistent_notification && reconnect && conn != NULL)
1984 if (start_event_loop() != 0)
1990 /* Need to refresh domain or device lists? */
1991 if ((last_refresh == (time_t)0) ||
1992 ((interval > 0) && ((last_refresh + interval) <= t))) {
1993 if (refresh_lists(inst) != 0) {
1994 if (inst->id == 0) {
1995 if (!persistent_notification)
2004 /* persistent domains state notifications are handled by instance 0 */
2005 if (inst->id == 0 && persistent_notification) {
2006 int status = persistent_domains_state_notification();
2008 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2009 "returned with status %i",
2014 for (int i = 0; i < state->nr_domains; ++i)
2015 DEBUG(PLUGIN_NAME " plugin: domain %s",
2016 virDomainGetName(state->domains[i].ptr));
2017 for (int i = 0; i < state->nr_block_devices; ++i)
2018 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2019 virDomainGetName(state->block_devices[i].dom),
2020 state->block_devices[i].path);
2021 for (int i = 0; i < state->nr_interface_devices; ++i)
2022 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2023 virDomainGetName(state->interface_devices[i].dom),
2024 state->interface_devices[i].path);
2027 /* Get domains' metrics */
2028 for (int i = 0; i < state->nr_domains; ++i) {
2029 domain_t *dom = &state->domains[i];
2032 status = get_domain_metrics(dom);
2033 #ifdef HAVE_DOM_REASON
2035 status = get_domain_state(dom->ptr);
2039 ERROR(PLUGIN_NAME " failed to get metrics for domain=%s",
2040 virDomainGetName(dom->ptr));
2043 /* Get block device stats for each domain. */
2044 for (int i = 0; i < state->nr_block_devices; ++i) {
2045 int status = get_block_stats(&state->block_devices[i]);
2048 " failed to get stats for block device (%s) in domain %s",
2049 state->block_devices[i].path,
2050 virDomainGetName(state->domains[i].ptr));
2053 /* Get interface stats for each domain. */
2054 for (int i = 0; i < state->nr_interface_devices; ++i) {
2055 int status = get_if_dev_stats(&state->interface_devices[i]);
2058 " failed to get interface stats for device (%s) in domain %s",
2059 state->interface_devices[i].path,
2060 virDomainGetName(state->interface_devices[i].dom));
2066 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2067 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2068 struct lv_read_instance *inst = &(lv_ud->inst);
2070 memset(lv_ud, 0, sizeof(*lv_ud));
2072 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2075 user_data_t *ud = &(lv_ud->ud);
2077 ud->free_func = NULL;
2079 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2081 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2084 static void lv_clean_read_state(struct lv_read_state *state) {
2085 free_block_devices(state);
2086 free_interface_devices(state);
2087 free_domains(state);
2090 static void lv_fini_instance(size_t i) {
2091 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2092 struct lv_read_state *state = &(inst->read_state);
2094 lv_clean_read_state(state);
2096 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2099 static int lv_init(void) {
2100 if (virInitialize() != 0)
2103 /* event implementation must be registered before connection is opened */
2104 if (!persistent_notification)
2105 if (register_event_impl() != 0)
2108 if (lv_connect() != 0)
2111 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2113 if (!persistent_notification)
2114 if (start_event_loop() != 0)
2117 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2119 for (int i = 0; i < nr_instances; ++i)
2120 if (lv_init_instance(i, lv_read) != 0)
2127 * returns 0 on success and <0 on error
2129 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2131 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2132 xmlXPathObjectPtr xpath_obj = NULL;
2133 xmlNodePtr xml_node = NULL;
2137 err = xmlXPathRegisterNs(xpath_ctx,
2138 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2139 (const xmlChar *)METADATA_VM_PARTITION_URI);
2141 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2142 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2146 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2147 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2148 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2149 if (xpath_obj == NULL) {
2150 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2151 xpath_str, dom_name);
2155 if (xpath_obj->type != XPATH_NODESET) {
2156 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2157 "(wanted %d) on domain %s",
2158 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2163 * from now on there is no real error, it's ok if a domain
2164 * doesn't have the metadata partition tag.
2167 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2168 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2169 "expected=1 on domain %s",
2171 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2174 xml_node = xpath_obj->nodesetval->nodeTab[0];
2175 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2179 /* deregister to clean up */
2180 err = xmlXPathRegisterNs(xpath_ctx,
2181 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2183 /* we can't really recover here */
2185 " plugin: deregistration of namespace %s failed for domain %s",
2186 METADATA_VM_PARTITION_PREFIX, dom_name);
2189 xmlXPathFreeObject(xpath_obj);
2194 static int is_known_tag(const char *dom_tag) {
2195 for (int i = 0; i < nr_instances; ++i)
2196 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2201 static int lv_instance_include_domain(struct lv_read_instance *inst,
2202 const char *dom_name,
2203 const char *dom_tag) {
2204 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2207 /* instance#0 will always be there, so it is in charge of extra duties */
2208 if (inst->id == 0) {
2209 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2210 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2211 "with unknown tag '%s'",
2212 inst->tag, dom_name, dom_tag);
2220 static int refresh_lists(struct lv_read_instance *inst) {
2221 struct lv_read_state *state = &inst->read_state;
2224 #ifndef HAVE_LIST_ALL_DOMAINS
2225 n = virConnectNumOfDomains(conn);
2227 VIRT_ERROR(conn, "reading number of domains");
2232 lv_clean_read_state(state);
2234 #ifndef HAVE_LIST_ALL_DOMAINS
2239 #ifdef HAVE_LIST_ALL_DOMAINS
2240 virDomainPtr *domains, *domains_inactive;
2241 int m = virConnectListAllDomains(conn, &domains_inactive,
2242 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2243 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2247 /* Get list of domains. */
2248 domids = malloc(sizeof(*domids) * n);
2249 if (domids == NULL) {
2250 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2254 n = virConnectListDomains(conn, domids, n);
2258 VIRT_ERROR(conn, "reading list of domains");
2259 #ifndef HAVE_LIST_ALL_DOMAINS
2262 for (int i = 0; i < m; ++i)
2263 virDomainFree(domains_inactive[i]);
2264 sfree(domains_inactive);
2269 #ifdef HAVE_LIST_ALL_DOMAINS
2270 for (int i = 0; i < m; ++i)
2271 if (add_domain(state, domains_inactive[i], 0) < 0) {
2272 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2277 /* Fetch each domain and add it to the list, unless ignore. */
2278 for (int i = 0; i < n; ++i) {
2281 xmlDocPtr xml_doc = NULL;
2282 xmlXPathContextPtr xpath_ctx = NULL;
2283 xmlXPathObjectPtr xpath_obj = NULL;
2284 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2288 #ifdef HAVE_LIST_ALL_DOMAINS
2289 virDomainPtr dom = domains[i];
2291 virDomainPtr dom = NULL;
2292 dom = virDomainLookupByID(conn, domids[i]);
2294 VIRT_ERROR(conn, "virDomainLookupByID");
2295 /* Could be that the domain went away -- ignore it anyway. */
2300 name = virDomainGetName(dom);
2302 VIRT_ERROR(conn, "virDomainGetName");
2306 status = virDomainGetInfo(dom, &info);
2308 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2313 if (info.state != VIR_DOMAIN_RUNNING) {
2314 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", name);
2318 if (il_domains && ignorelist_match(il_domains, name) != 0)
2321 /* Get a list of devices for this domain. */
2322 xml = virDomainGetXMLDesc(dom, 0);
2324 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2328 /* Yuck, XML. Parse out the devices. */
2329 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2330 if (xml_doc == NULL) {
2331 VIRT_ERROR(conn, "xmlReadDoc");
2335 xpath_ctx = xmlXPathNewContext(xml_doc);
2337 if (lv_domain_get_tag(xpath_ctx, name, tag) < 0) {
2338 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2342 if (!lv_instance_include_domain(inst, name, tag))
2345 if (add_domain(state, dom, 1) < 0) {
2346 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2350 /* Block devices. */
2351 const char *bd_xmlpath = "/domain/devices/disk/target[@dev]";
2352 if (blockdevice_format == source)
2353 bd_xmlpath = "/domain/devices/disk/source[@dev]";
2354 xpath_obj = xmlXPathEval((const xmlChar *)bd_xmlpath, xpath_ctx);
2356 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
2357 xpath_obj->nodesetval == NULL)
2360 for (int j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
2364 node = xpath_obj->nodesetval->nodeTab[j];
2367 path = (char *)xmlGetProp(node, (xmlChar *)"dev");
2371 if (il_block_devices &&
2372 ignore_device_match(il_block_devices, name, path) != 0)
2375 add_block_device(state, dom, path);
2380 xmlXPathFreeObject(xpath_obj);
2382 /* Network interfaces. */
2383 xpath_obj = xmlXPathEval(
2384 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2385 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
2386 xpath_obj->nodesetval == NULL)
2389 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2391 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2393 char *address = NULL;
2394 xmlNodePtr xml_interface;
2396 xml_interface = xml_interfaces->nodeTab[j];
2400 for (xmlNodePtr child = xml_interface->children; child;
2401 child = child->next) {
2402 if (child->type != XML_ELEMENT_NODE)
2405 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2406 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2409 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2410 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2416 if (il_interface_devices &&
2417 (ignore_device_match(il_interface_devices, name, path) != 0 ||
2418 ignore_device_match(il_interface_devices, name, address) != 0))
2421 add_interface_device(state, dom, path, address, j + 1);
2431 xmlXPathFreeObject(xpath_obj);
2433 xmlXPathFreeContext(xpath_ctx);
2435 xmlFreeDoc(xml_doc);
2439 #ifdef HAVE_LIST_ALL_DOMAINS
2440 for (int i = 0; i < n; ++i)
2441 virDomainFree(domains[i]);
2443 for (int i = 0; i < m; ++i)
2444 virDomainFree(domains_inactive[i]);
2445 sfree(domains_inactive);
2452 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2453 " domains=%i block_devices=%i iface_devices=%i",
2454 inst->tag, state->nr_domains, state->nr_block_devices,
2455 state->nr_interface_devices);
2460 static void free_domains(struct lv_read_state *state) {
2461 if (state->domains) {
2462 for (int i = 0; i < state->nr_domains; ++i)
2463 virDomainFree(state->domains[i].ptr);
2464 sfree(state->domains);
2466 state->domains = NULL;
2467 state->nr_domains = 0;
2470 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2473 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2476 new_ptr = realloc(state->domains, new_size);
2478 new_ptr = malloc(new_size);
2480 if (new_ptr == NULL)
2483 state->domains = new_ptr;
2484 state->domains[state->nr_domains].ptr = dom;
2485 state->domains[state->nr_domains].active = active;
2486 memset(&state->domains[state->nr_domains].info, 0,
2487 sizeof(state->domains[state->nr_domains].info));
2489 return state->nr_domains++;
2492 static void free_block_devices(struct lv_read_state *state) {
2493 if (state->block_devices) {
2494 for (int i = 0; i < state->nr_block_devices; ++i)
2495 sfree(state->block_devices[i].path);
2496 sfree(state->block_devices);
2498 state->block_devices = NULL;
2499 state->nr_block_devices = 0;
2502 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2504 struct block_device *new_ptr;
2506 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2509 path_copy = strdup(path);
2513 if (state->block_devices)
2514 new_ptr = realloc(state->block_devices, new_size);
2516 new_ptr = malloc(new_size);
2518 if (new_ptr == NULL) {
2522 state->block_devices = new_ptr;
2523 state->block_devices[state->nr_block_devices].dom = dom;
2524 state->block_devices[state->nr_block_devices].path = path_copy;
2525 return state->nr_block_devices++;
2528 static void free_interface_devices(struct lv_read_state *state) {
2529 if (state->interface_devices) {
2530 for (int i = 0; i < state->nr_interface_devices; ++i) {
2531 sfree(state->interface_devices[i].path);
2532 sfree(state->interface_devices[i].address);
2533 sfree(state->interface_devices[i].number);
2535 sfree(state->interface_devices);
2537 state->interface_devices = NULL;
2538 state->nr_interface_devices = 0;
2541 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2542 const char *path, const char *address,
2543 unsigned int number) {
2544 struct interface_device *new_ptr;
2546 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2547 char *path_copy, *address_copy, number_string[15];
2549 if ((path == NULL) || (address == NULL))
2552 path_copy = strdup(path);
2556 address_copy = strdup(address);
2557 if (!address_copy) {
2562 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2564 if (state->interface_devices)
2565 new_ptr = realloc(state->interface_devices, new_size);
2567 new_ptr = malloc(new_size);
2569 if (new_ptr == NULL) {
2571 sfree(address_copy);
2574 state->interface_devices = new_ptr;
2575 state->interface_devices[state->nr_interface_devices].dom = dom;
2576 state->interface_devices[state->nr_interface_devices].path = path_copy;
2577 state->interface_devices[state->nr_interface_devices].address = address_copy;
2578 state->interface_devices[state->nr_interface_devices].number =
2579 strdup(number_string);
2580 return state->nr_interface_devices++;
2583 static int ignore_device_match(ignorelist_t *il, const char *domname,
2584 const char *devpath) {
2588 if ((domname == NULL) || (devpath == NULL))
2591 n = strlen(domname) + strlen(devpath) + 2;
2594 ERROR(PLUGIN_NAME " plugin: malloc failed.");
2597 snprintf(name, n, "%s:%s", domname, devpath);
2598 r = ignorelist_match(il, name);
2603 static int lv_shutdown(void) {
2604 for (int i = 0; i < nr_instances; ++i) {
2605 lv_fini_instance(i);
2608 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2610 if (!persistent_notification)
2615 ignorelist_free(il_domains);
2617 ignorelist_free(il_block_devices);
2618 il_block_devices = NULL;
2619 ignorelist_free(il_interface_devices);
2620 il_interface_devices = NULL;
2625 void module_register(void) {
2626 plugin_register_config(PLUGIN_NAME, lv_config, config_keys, NR_CONFIG_KEYS);
2627 plugin_register_init(PLUGIN_NAME, lv_init);
2628 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);