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verify: ensure that verify interval is smaller or equal to blocksize
[fio.git] / client.c
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1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <limits.h>
5#include <errno.h>
6#include <fcntl.h>
7#include <sys/poll.h>
8#include <sys/types.h>
9#include <sys/stat.h>
10#include <sys/wait.h>
11#include <sys/socket.h>
12#include <sys/un.h>
13#include <netinet/in.h>
14#include <arpa/inet.h>
15#include <netdb.h>
16#include <signal.h>
17#ifdef CONFIG_ZLIB
18#include <zlib.h>
19#endif
20
21#include "fio.h"
22#include "client.h"
23#include "server.h"
24#include "flist.h"
25#include "hash.h"
26
27static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
28static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
29static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
30static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
31static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
32static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd);
33static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
34
35struct client_ops fio_client_ops = {
36 .text = handle_text,
37 .disk_util = handle_du,
38 .thread_status = handle_ts,
39 .group_stats = handle_gs,
40 .stop = handle_stop,
41 .start = handle_start,
42 .eta = display_thread_status,
43 .probe = handle_probe,
44 .eta_msec = FIO_CLIENT_DEF_ETA_MSEC,
45 .client_type = FIO_CLIENT_TYPE_CLI,
46};
47
48static struct timeval eta_tv;
49
50static FLIST_HEAD(client_list);
51static FLIST_HEAD(eta_list);
52
53static FLIST_HEAD(arg_list);
54
55struct thread_stat client_ts;
56struct group_run_stats client_gs;
57int sum_stat_clients;
58
59static int sum_stat_nr;
60static struct json_object *root = NULL;
61static struct json_array *clients_array = NULL;
62static struct json_array *du_array = NULL;
63static int do_output_all_clients;
64
65#define FIO_CLIENT_HASH_BITS 7
66#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
67#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
68static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
69
70static void fio_client_add_hash(struct fio_client *client)
71{
72 int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
73
74 bucket &= FIO_CLIENT_HASH_MASK;
75 flist_add(&client->hash_list, &client_hash[bucket]);
76}
77
78static void fio_client_remove_hash(struct fio_client *client)
79{
80 if (!flist_empty(&client->hash_list))
81 flist_del_init(&client->hash_list);
82}
83
84static void fio_init fio_client_hash_init(void)
85{
86 int i;
87
88 for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
89 INIT_FLIST_HEAD(&client_hash[i]);
90}
91
92static void fio_client_json_init(void)
93{
94 if (output_format != FIO_OUTPUT_JSON)
95 return;
96 root = json_create_object();
97 json_object_add_value_string(root, "fio version", fio_version_string);
98 clients_array = json_create_array();
99 json_object_add_value_array(root, "client_stats", clients_array);
100 du_array = json_create_array();
101 json_object_add_value_array(root, "disk_util", du_array);
102}
103
104static void fio_client_json_fini(void)
105{
106 if (output_format != FIO_OUTPUT_JSON)
107 return;
108 json_print_object(root);
109 log_info("\n");
110 json_free_object(root);
111 root = NULL;
112 clients_array = NULL;
113 du_array = NULL;
114}
115
116static struct fio_client *find_client_by_fd(int fd)
117{
118 int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
119 struct fio_client *client;
120 struct flist_head *entry;
121
122 flist_for_each(entry, &client_hash[bucket]) {
123 client = flist_entry(entry, struct fio_client, hash_list);
124
125 if (client->fd == fd) {
126 client->refs++;
127 return client;
128 }
129 }
130
131 return NULL;
132}
133
134void fio_put_client(struct fio_client *client)
135{
136 if (--client->refs)
137 return;
138
139 free(client->hostname);
140 if (client->argv)
141 free(client->argv);
142 if (client->name)
143 free(client->name);
144 while (client->nr_ini_file)
145 free(client->ini_file[--client->nr_ini_file]);
146 if (client->ini_file)
147 free(client->ini_file);
148
149 if (!client->did_stat)
150 sum_stat_clients -= client->nr_stat;
151
152 free(client);
153}
154
155static void remove_client(struct fio_client *client)
156{
157 assert(client->refs);
158
159 dprint(FD_NET, "client: removed <%s>\n", client->hostname);
160
161 if (!flist_empty(&client->list))
162 flist_del_init(&client->list);
163
164 fio_client_remove_hash(client);
165
166 if (!flist_empty(&client->eta_list)) {
167 flist_del_init(&client->eta_list);
168 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
169 }
170
171 close(client->fd);
172 client->fd = -1;
173
174 if (client->ops->removed)
175 client->ops->removed(client);
176
177 nr_clients--;
178 fio_put_client(client);
179}
180
181struct fio_client *fio_get_client(struct fio_client *client)
182{
183 client->refs++;
184 return client;
185}
186
187static void __fio_client_add_cmd_option(struct fio_client *client,
188 const char *opt)
189{
190 int index;
191
192 index = client->argc++;
193 client->argv = realloc(client->argv, sizeof(char *) * client->argc);
194 client->argv[index] = strdup(opt);
195 dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
196}
197
198void fio_client_add_cmd_option(void *cookie, const char *opt)
199{
200 struct fio_client *client = cookie;
201 struct flist_head *entry;
202
203 if (!client || !opt)
204 return;
205
206 __fio_client_add_cmd_option(client, opt);
207
208 /*
209 * Duplicate arguments to shared client group
210 */
211 flist_for_each(entry, &arg_list) {
212 client = flist_entry(entry, struct fio_client, arg_list);
213
214 __fio_client_add_cmd_option(client, opt);
215 }
216}
217
218struct fio_client *fio_client_add_explicit(struct client_ops *ops,
219 const char *hostname, int type,
220 int port)
221{
222 struct fio_client *client;
223
224 client = malloc(sizeof(*client));
225 memset(client, 0, sizeof(*client));
226
227 INIT_FLIST_HEAD(&client->list);
228 INIT_FLIST_HEAD(&client->hash_list);
229 INIT_FLIST_HEAD(&client->arg_list);
230 INIT_FLIST_HEAD(&client->eta_list);
231 INIT_FLIST_HEAD(&client->cmd_list);
232
233 client->hostname = strdup(hostname);
234
235 if (type == Fio_client_socket)
236 client->is_sock = 1;
237 else {
238 int ipv6;
239
240 ipv6 = type == Fio_client_ipv6;
241 if (fio_server_parse_host(hostname, ipv6,
242 &client->addr.sin_addr,
243 &client->addr6.sin6_addr))
244 goto err;
245
246 client->port = port;
247 }
248
249 client->fd = -1;
250 client->ops = ops;
251 client->refs = 1;
252 client->type = ops->client_type;
253
254 __fio_client_add_cmd_option(client, "fio");
255
256 flist_add(&client->list, &client_list);
257 nr_clients++;
258 dprint(FD_NET, "client: added <%s>\n", client->hostname);
259 return client;
260err:
261 free(client);
262 return NULL;
263}
264
265void fio_client_add_ini_file(void *cookie, const char *ini_file)
266{
267 struct fio_client *client = cookie;
268 size_t new_size;
269
270 dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
271
272 new_size = (client->nr_ini_file + 1) * sizeof(char *);
273 client->ini_file = realloc(client->ini_file, new_size);
274 client->ini_file[client->nr_ini_file] = strdup(ini_file);
275 client->nr_ini_file++;
276}
277
278int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
279{
280 struct fio_client *existing = *cookie;
281 struct fio_client *client;
282
283 if (existing) {
284 /*
285 * We always add our "exec" name as the option, hence 1
286 * means empty.
287 */
288 if (existing->argc == 1)
289 flist_add_tail(&existing->arg_list, &arg_list);
290 else {
291 while (!flist_empty(&arg_list))
292 flist_del_init(arg_list.next);
293 }
294 }
295
296 client = malloc(sizeof(*client));
297 memset(client, 0, sizeof(*client));
298
299 INIT_FLIST_HEAD(&client->list);
300 INIT_FLIST_HEAD(&client->hash_list);
301 INIT_FLIST_HEAD(&client->arg_list);
302 INIT_FLIST_HEAD(&client->eta_list);
303 INIT_FLIST_HEAD(&client->cmd_list);
304
305 if (fio_server_parse_string(hostname, &client->hostname,
306 &client->is_sock, &client->port,
307 &client->addr.sin_addr,
308 &client->addr6.sin6_addr,
309 &client->ipv6))
310 return -1;
311
312 client->fd = -1;
313 client->ops = ops;
314 client->refs = 1;
315 client->type = ops->client_type;
316
317 __fio_client_add_cmd_option(client, "fio");
318
319 flist_add(&client->list, &client_list);
320 nr_clients++;
321 dprint(FD_NET, "client: added <%s>\n", client->hostname);
322 *cookie = client;
323 return 0;
324}
325
326static void probe_client(struct fio_client *client)
327{
328 struct cmd_client_probe_pdu pdu;
329 uint64_t tag;
330
331 dprint(FD_NET, "client: send probe\n");
332
333#ifdef CONFIG_ZLIB
334 pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
335#else
336 pdu.flags = 0;
337#endif
338
339 fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
340}
341
342static int fio_client_connect_ip(struct fio_client *client)
343{
344 struct sockaddr *addr;
345 socklen_t socklen;
346 int fd, domain;
347
348 if (client->ipv6) {
349 client->addr6.sin6_family = AF_INET6;
350 client->addr6.sin6_port = htons(client->port);
351 domain = AF_INET6;
352 addr = (struct sockaddr *) &client->addr6;
353 socklen = sizeof(client->addr6);
354 } else {
355 client->addr.sin_family = AF_INET;
356 client->addr.sin_port = htons(client->port);
357 domain = AF_INET;
358 addr = (struct sockaddr *) &client->addr;
359 socklen = sizeof(client->addr);
360 }
361
362 fd = socket(domain, SOCK_STREAM, 0);
363 if (fd < 0) {
364 int ret = -errno;
365
366 log_err("fio: socket: %s\n", strerror(errno));
367 return ret;
368 }
369
370 if (connect(fd, addr, socklen) < 0) {
371 int ret = -errno;
372
373 log_err("fio: connect: %s\n", strerror(errno));
374 log_err("fio: failed to connect to %s:%u\n", client->hostname,
375 client->port);
376 close(fd);
377 return ret;
378 }
379
380 return fd;
381}
382
383static int fio_client_connect_sock(struct fio_client *client)
384{
385 struct sockaddr_un *addr = &client->addr_un;
386 socklen_t len;
387 int fd;
388
389 memset(addr, 0, sizeof(*addr));
390 addr->sun_family = AF_UNIX;
391 strncpy(addr->sun_path, client->hostname, sizeof(addr->sun_path) - 1);
392
393 fd = socket(AF_UNIX, SOCK_STREAM, 0);
394 if (fd < 0) {
395 int ret = -errno;
396
397 log_err("fio: socket: %s\n", strerror(errno));
398 return ret;
399 }
400
401 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
402 if (connect(fd, (struct sockaddr *) addr, len) < 0) {
403 int ret = -errno;
404
405 log_err("fio: connect; %s\n", strerror(errno));
406 close(fd);
407 return ret;
408 }
409
410 return fd;
411}
412
413int fio_client_connect(struct fio_client *client)
414{
415 int fd;
416
417 dprint(FD_NET, "client: connect to host %s\n", client->hostname);
418
419 if (client->is_sock)
420 fd = fio_client_connect_sock(client);
421 else
422 fd = fio_client_connect_ip(client);
423
424 dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
425
426 if (fd < 0)
427 return fd;
428
429 client->fd = fd;
430 fio_client_add_hash(client);
431 client->state = Client_connected;
432
433 probe_client(client);
434 return 0;
435}
436
437int fio_client_terminate(struct fio_client *client)
438{
439 return fio_net_send_quit(client->fd);
440}
441
442void fio_clients_terminate(void)
443{
444 struct flist_head *entry;
445 struct fio_client *client;
446
447 dprint(FD_NET, "client: terminate clients\n");
448
449 flist_for_each(entry, &client_list) {
450 client = flist_entry(entry, struct fio_client, list);
451 fio_client_terminate(client);
452 }
453}
454
455static void sig_int(int sig)
456{
457 dprint(FD_NET, "client: got signal %d\n", sig);
458 fio_clients_terminate();
459}
460
461static void sig_show_status(int sig)
462{
463 show_running_run_stats();
464}
465
466static void client_signal_handler(void)
467{
468 struct sigaction act;
469
470 memset(&act, 0, sizeof(act));
471 act.sa_handler = sig_int;
472 act.sa_flags = SA_RESTART;
473 sigaction(SIGINT, &act, NULL);
474
475 memset(&act, 0, sizeof(act));
476 act.sa_handler = sig_int;
477 act.sa_flags = SA_RESTART;
478 sigaction(SIGTERM, &act, NULL);
479
480/* Windows uses SIGBREAK as a quit signal from other applications */
481#ifdef WIN32
482 memset(&act, 0, sizeof(act));
483 act.sa_handler = sig_int;
484 act.sa_flags = SA_RESTART;
485 sigaction(SIGBREAK, &act, NULL);
486#endif
487
488 memset(&act, 0, sizeof(act));
489 act.sa_handler = sig_show_status;
490 act.sa_flags = SA_RESTART;
491 sigaction(SIGUSR1, &act, NULL);
492}
493
494static int send_client_cmd_line(struct fio_client *client)
495{
496 struct cmd_single_line_pdu *cslp;
497 struct cmd_line_pdu *clp;
498 unsigned long offset;
499 unsigned int *lens;
500 void *pdu;
501 size_t mem;
502 int i, ret;
503
504 dprint(FD_NET, "client: send cmdline %d\n", client->argc);
505
506 lens = malloc(client->argc * sizeof(unsigned int));
507
508 /*
509 * Find out how much mem we need
510 */
511 for (i = 0, mem = 0; i < client->argc; i++) {
512 lens[i] = strlen(client->argv[i]) + 1;
513 mem += lens[i];
514 }
515
516 /*
517 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
518 */
519 mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
520
521 pdu = malloc(mem);
522 clp = pdu;
523 offset = sizeof(*clp);
524
525 for (i = 0; i < client->argc; i++) {
526 uint16_t arg_len = lens[i];
527
528 cslp = pdu + offset;
529 strcpy((char *) cslp->text, client->argv[i]);
530 cslp->len = cpu_to_le16(arg_len);
531 offset += sizeof(*cslp) + arg_len;
532 }
533
534 free(lens);
535 clp->lines = cpu_to_le16(client->argc);
536 clp->client_type = __cpu_to_le16(client->type);
537 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, NULL, NULL);
538 free(pdu);
539 return ret;
540}
541
542int fio_clients_connect(void)
543{
544 struct fio_client *client;
545 struct flist_head *entry, *tmp;
546 int ret;
547
548#ifdef WIN32
549 WSADATA wsd;
550 WSAStartup(MAKEWORD(2, 2), &wsd);
551#endif
552
553 dprint(FD_NET, "client: connect all\n");
554
555 client_signal_handler();
556
557 flist_for_each_safe(entry, tmp, &client_list) {
558 client = flist_entry(entry, struct fio_client, list);
559
560 ret = fio_client_connect(client);
561 if (ret) {
562 remove_client(client);
563 continue;
564 }
565
566 if (client->argc > 1)
567 send_client_cmd_line(client);
568 }
569
570 return !nr_clients;
571}
572
573int fio_start_client(struct fio_client *client)
574{
575 dprint(FD_NET, "client: start %s\n", client->hostname);
576 return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
577}
578
579int fio_start_all_clients(void)
580{
581 struct fio_client *client;
582 struct flist_head *entry, *tmp;
583 int ret;
584
585 dprint(FD_NET, "client: start all\n");
586
587 fio_client_json_init();
588
589 flist_for_each_safe(entry, tmp, &client_list) {
590 client = flist_entry(entry, struct fio_client, list);
591
592 ret = fio_start_client(client);
593 if (ret) {
594 remove_client(client);
595 continue;
596 }
597 }
598
599 return flist_empty(&client_list);
600}
601
602/*
603 * Send file contents to server backend. We could use sendfile(), but to remain
604 * more portable lets just read/write the darn thing.
605 */
606static int __fio_client_send_ini(struct fio_client *client, const char *filename)
607{
608 struct cmd_job_pdu *pdu;
609 size_t p_size;
610 struct stat sb;
611 char *p;
612 void *buf;
613 off_t len;
614 int fd, ret;
615
616 dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
617
618 fd = open(filename, O_RDONLY);
619 if (fd < 0) {
620 int ret = -errno;
621
622 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
623 return ret;
624 }
625
626 if (fstat(fd, &sb) < 0) {
627 int ret = -errno;
628
629 log_err("fio: job file stat: %s\n", strerror(errno));
630 close(fd);
631 return ret;
632 }
633
634 p_size = sb.st_size + sizeof(*pdu);
635 pdu = malloc(p_size);
636 buf = pdu->buf;
637
638 len = sb.st_size;
639 p = buf;
640 do {
641 ret = read(fd, p, len);
642 if (ret > 0) {
643 len -= ret;
644 if (!len)
645 break;
646 p += ret;
647 continue;
648 } else if (!ret)
649 break;
650 else if (errno == EAGAIN || errno == EINTR)
651 continue;
652 } while (1);
653
654 if (len) {
655 log_err("fio: failed reading job file %s\n", filename);
656 close(fd);
657 free(pdu);
658 return 1;
659 }
660
661 pdu->buf_len = __cpu_to_le32(sb.st_size);
662 pdu->client_type = cpu_to_le32(client->type);
663
664 client->sent_job = 1;
665 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, pdu, p_size, NULL, NULL);
666 free(pdu);
667 close(fd);
668 return ret;
669}
670
671int fio_client_send_ini(struct fio_client *client, const char *filename)
672{
673 int ret;
674
675 ret = __fio_client_send_ini(client, filename);
676 if (!ret)
677 client->sent_job = 1;
678
679 return ret;
680}
681
682int fio_clients_send_ini(const char *filename)
683{
684 struct fio_client *client;
685 struct flist_head *entry, *tmp;
686
687 flist_for_each_safe(entry, tmp, &client_list) {
688 client = flist_entry(entry, struct fio_client, list);
689
690 if (client->nr_ini_file) {
691 int i;
692
693 for (i = 0; i < client->nr_ini_file; i++) {
694 const char *ini = client->ini_file[i];
695
696 if (fio_client_send_ini(client, ini)) {
697 remove_client(client);
698 break;
699 }
700 }
701 } else if (!filename || fio_client_send_ini(client, filename))
702 remove_client(client);
703 }
704
705 return !nr_clients;
706}
707
708int fio_client_update_options(struct fio_client *client,
709 struct thread_options *o, uint64_t *tag)
710{
711 struct cmd_add_job_pdu pdu;
712
713 pdu.thread_number = cpu_to_le32(client->thread_number);
714 pdu.groupid = cpu_to_le32(client->groupid);
715 convert_thread_options_to_net(&pdu.top, o);
716
717 return fio_net_send_cmd(client->fd, FIO_NET_CMD_UPDATE_JOB, &pdu, sizeof(pdu), tag, &client->cmd_list);
718}
719
720static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
721{
722 dst->max_val = le64_to_cpu(src->max_val);
723 dst->min_val = le64_to_cpu(src->min_val);
724 dst->samples = le64_to_cpu(src->samples);
725
726 /*
727 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
728 */
729 dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
730 dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
731}
732
733static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
734{
735 int i, j;
736
737 dst->error = le32_to_cpu(src->error);
738 dst->thread_number = le32_to_cpu(src->thread_number);
739 dst->groupid = le32_to_cpu(src->groupid);
740 dst->pid = le32_to_cpu(src->pid);
741 dst->members = le32_to_cpu(src->members);
742 dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
743
744 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
745 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
746 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
747 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
748 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
749 }
750
751 dst->usr_time = le64_to_cpu(src->usr_time);
752 dst->sys_time = le64_to_cpu(src->sys_time);
753 dst->ctx = le64_to_cpu(src->ctx);
754 dst->minf = le64_to_cpu(src->minf);
755 dst->majf = le64_to_cpu(src->majf);
756 dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
757
758 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
759 fio_fp64_t *fps = &src->percentile_list[i];
760 fio_fp64_t *fpd = &dst->percentile_list[i];
761
762 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
763 }
764
765 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
766 dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
767 dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
768 dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
769 }
770
771 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
772 dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
773 dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
774 }
775
776 for (i = 0; i < DDIR_RWDIR_CNT; i++)
777 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
778 dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
779
780 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
781 dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
782 dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
783 }
784
785 dst->total_submit = le64_to_cpu(src->total_submit);
786 dst->total_complete = le64_to_cpu(src->total_complete);
787
788 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
789 dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
790 dst->runtime[i] = le64_to_cpu(src->runtime[i]);
791 }
792
793 dst->total_run_time = le64_to_cpu(src->total_run_time);
794 dst->continue_on_error = le16_to_cpu(src->continue_on_error);
795 dst->total_err_count = le64_to_cpu(src->total_err_count);
796 dst->first_error = le32_to_cpu(src->first_error);
797 dst->kb_base = le32_to_cpu(src->kb_base);
798 dst->unit_base = le32_to_cpu(src->unit_base);
799
800 dst->latency_depth = le32_to_cpu(src->latency_depth);
801 dst->latency_target = le64_to_cpu(src->latency_target);
802 dst->latency_window = le64_to_cpu(src->latency_window);
803 dst->latency_percentile.u.f = fio_uint64_to_double(le64_to_cpu(src->latency_percentile.u.i));
804}
805
806static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
807{
808 int i;
809
810 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
811 dst->max_run[i] = le64_to_cpu(src->max_run[i]);
812 dst->min_run[i] = le64_to_cpu(src->min_run[i]);
813 dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
814 dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
815 dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
816 dst->agg[i] = le64_to_cpu(src->agg[i]);
817 }
818
819 dst->kb_base = le32_to_cpu(src->kb_base);
820 dst->unit_base = le32_to_cpu(src->unit_base);
821 dst->groupid = le32_to_cpu(src->groupid);
822 dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
823}
824
825static void json_object_add_client_info(struct json_object *obj,
826struct fio_client *client)
827{
828 json_object_add_value_string(obj, "hostname", client->hostname);
829 json_object_add_value_int(obj, "port", client->port);
830}
831
832static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
833{
834 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
835 struct json_object *tsobj;
836
837 tsobj = show_thread_status(&p->ts, &p->rs);
838 client->did_stat = 1;
839 if (tsobj) {
840 json_object_add_client_info(tsobj, client);
841 json_array_add_value_object(clients_array, tsobj);
842 }
843
844 if (!do_output_all_clients)
845 return;
846
847 sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
848 sum_group_stats(&client_gs, &p->rs);
849
850 client_ts.members++;
851 client_ts.thread_number = p->ts.thread_number;
852 client_ts.groupid = p->ts.groupid;
853 client_ts.unified_rw_rep = p->ts.unified_rw_rep;
854
855 if (++sum_stat_nr == sum_stat_clients) {
856 strcpy(client_ts.name, "All clients");
857 tsobj = show_thread_status(&client_ts, &client_gs);
858 if (tsobj) {
859 json_object_add_client_info(tsobj, client);
860 json_array_add_value_object(clients_array, tsobj);
861 }
862 }
863}
864
865static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd)
866{
867 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
868
869 show_group_stats(gs);
870}
871
872static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd)
873{
874 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
875 const char *buf = (const char *) pdu->buf;
876 const char *name;
877 int fio_unused ret;
878
879 name = client->name ? client->name : client->hostname;
880
881 if (!client->skip_newline)
882 fprintf(f_out, "<%s> ", name);
883 ret = fwrite(buf, pdu->buf_len, 1, f_out);
884 fflush(f_out);
885 client->skip_newline = strchr(buf, '\n') == NULL;
886}
887
888static void convert_agg(struct disk_util_agg *agg)
889{
890 int i;
891
892 for (i = 0; i < 2; i++) {
893 agg->ios[i] = le32_to_cpu(agg->ios[i]);
894 agg->merges[i] = le32_to_cpu(agg->merges[i]);
895 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
896 agg->ticks[i] = le32_to_cpu(agg->ticks[i]);
897 }
898
899 agg->io_ticks = le32_to_cpu(agg->io_ticks);
900 agg->time_in_queue = le32_to_cpu(agg->time_in_queue);
901 agg->slavecount = le32_to_cpu(agg->slavecount);
902 agg->max_util.u.f = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
903}
904
905static void convert_dus(struct disk_util_stat *dus)
906{
907 int i;
908
909 for (i = 0; i < 2; i++) {
910 dus->s.ios[i] = le32_to_cpu(dus->s.ios[i]);
911 dus->s.merges[i] = le32_to_cpu(dus->s.merges[i]);
912 dus->s.sectors[i] = le64_to_cpu(dus->s.sectors[i]);
913 dus->s.ticks[i] = le32_to_cpu(dus->s.ticks[i]);
914 }
915
916 dus->s.io_ticks = le32_to_cpu(dus->s.io_ticks);
917 dus->s.time_in_queue = le32_to_cpu(dus->s.time_in_queue);
918 dus->s.msec = le64_to_cpu(dus->s.msec);
919}
920
921static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
922{
923 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
924
925 if (!client->disk_stats_shown) {
926 client->disk_stats_shown = 1;
927 log_info("\nDisk stats (read/write):\n");
928 }
929
930 if (output_format == FIO_OUTPUT_JSON) {
931 struct json_object *duobj;
932 json_array_add_disk_util(&du->dus, &du->agg, du_array);
933 duobj = json_array_last_value_object(du_array);
934 json_object_add_client_info(duobj, client);
935 } else
936 print_disk_util(&du->dus, &du->agg, output_format == FIO_OUTPUT_TERSE);
937}
938
939static void convert_jobs_eta(struct jobs_eta *je)
940{
941 int i;
942
943 je->nr_running = le32_to_cpu(je->nr_running);
944 je->nr_ramp = le32_to_cpu(je->nr_ramp);
945 je->nr_pending = le32_to_cpu(je->nr_pending);
946 je->nr_setting_up = le32_to_cpu(je->nr_setting_up);
947 je->files_open = le32_to_cpu(je->files_open);
948
949 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
950 je->m_rate[i] = le32_to_cpu(je->m_rate[i]);
951 je->t_rate[i] = le32_to_cpu(je->t_rate[i]);
952 je->m_iops[i] = le32_to_cpu(je->m_iops[i]);
953 je->t_iops[i] = le32_to_cpu(je->t_iops[i]);
954 je->rate[i] = le32_to_cpu(je->rate[i]);
955 je->iops[i] = le32_to_cpu(je->iops[i]);
956 }
957
958 je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
959 je->eta_sec = le64_to_cpu(je->eta_sec);
960 je->nr_threads = le32_to_cpu(je->nr_threads);
961 je->is_pow2 = le32_to_cpu(je->is_pow2);
962 je->unit_base = le32_to_cpu(je->unit_base);
963}
964
965void fio_client_sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
966{
967 int i;
968
969 dst->nr_running += je->nr_running;
970 dst->nr_ramp += je->nr_ramp;
971 dst->nr_pending += je->nr_pending;
972 dst->nr_setting_up += je->nr_setting_up;
973 dst->files_open += je->files_open;
974
975 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
976 dst->m_rate[i] += je->m_rate[i];
977 dst->t_rate[i] += je->t_rate[i];
978 dst->m_iops[i] += je->m_iops[i];
979 dst->t_iops[i] += je->t_iops[i];
980 dst->rate[i] += je->rate[i];
981 dst->iops[i] += je->iops[i];
982 }
983
984 dst->elapsed_sec += je->elapsed_sec;
985
986 if (je->eta_sec > dst->eta_sec)
987 dst->eta_sec = je->eta_sec;
988
989 dst->nr_threads += je->nr_threads;
990
991 /*
992 * This wont be correct for multiple strings, but at least it
993 * works for the basic cases.
994 */
995 strcpy((char *) dst->run_str, (char *) je->run_str);
996}
997
998void fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
999{
1000 if (!--eta->pending) {
1001 eta_fn(&eta->eta);
1002 free(eta);
1003 }
1004}
1005
1006static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
1007{
1008 struct fio_net_cmd_reply *reply = NULL;
1009 struct flist_head *entry;
1010
1011 flist_for_each(entry, &client->cmd_list) {
1012 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1013
1014 if (cmd->tag == (uintptr_t) reply)
1015 break;
1016
1017 reply = NULL;
1018 }
1019
1020 if (!reply) {
1021 log_err("fio: client: unable to find matching tag (%llx)\n", (unsigned long long) cmd->tag);
1022 return;
1023 }
1024
1025 flist_del(&reply->list);
1026 cmd->tag = reply->saved_tag;
1027 free(reply);
1028}
1029
1030int fio_client_wait_for_reply(struct fio_client *client, uint64_t tag)
1031{
1032 do {
1033 struct fio_net_cmd_reply *reply = NULL;
1034 struct flist_head *entry;
1035
1036 flist_for_each(entry, &client->cmd_list) {
1037 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1038
1039 if (tag == (uintptr_t) reply)
1040 break;
1041
1042 reply = NULL;
1043 }
1044
1045 if (!reply)
1046 break;
1047
1048 usleep(1000);
1049 } while (1);
1050
1051 return 0;
1052}
1053
1054static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
1055{
1056 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1057 struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
1058
1059 dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
1060
1061 assert(client->eta_in_flight == eta);
1062
1063 client->eta_in_flight = NULL;
1064 flist_del_init(&client->eta_list);
1065
1066 if (client->ops->jobs_eta)
1067 client->ops->jobs_eta(client, je);
1068
1069 fio_client_sum_jobs_eta(&eta->eta, je);
1070 fio_client_dec_jobs_eta(eta, client->ops->eta);
1071}
1072
1073static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
1074{
1075 struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
1076 const char *os, *arch;
1077 char bit[16];
1078
1079 os = fio_get_os_string(probe->os);
1080 if (!os)
1081 os = "unknown";
1082
1083 arch = fio_get_arch_string(probe->arch);
1084 if (!arch)
1085 os = "unknown";
1086
1087 sprintf(bit, "%d-bit", probe->bpp * 8);
1088 probe->flags = le64_to_cpu(probe->flags);
1089
1090 log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s, flags=%lx\n",
1091 probe->hostname, probe->bigendian, bit, os, arch,
1092 probe->fio_version, (unsigned long) probe->flags);
1093
1094 if (!client->name)
1095 client->name = strdup((char *) probe->hostname);
1096}
1097
1098static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
1099{
1100 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1101
1102 client->state = Client_started;
1103 client->jobs = le32_to_cpu(pdu->jobs);
1104 client->nr_stat = le32_to_cpu(pdu->stat_outputs);
1105
1106 if (sum_stat_clients > 1)
1107 do_output_all_clients = 1;
1108
1109 sum_stat_clients += client->nr_stat;
1110}
1111
1112static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
1113{
1114 if (client->error)
1115 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
1116}
1117
1118static void convert_stop(struct fio_net_cmd *cmd)
1119{
1120 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1121
1122 pdu->error = le32_to_cpu(pdu->error);
1123}
1124
1125static void convert_text(struct fio_net_cmd *cmd)
1126{
1127 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
1128
1129 pdu->level = le32_to_cpu(pdu->level);
1130 pdu->buf_len = le32_to_cpu(pdu->buf_len);
1131 pdu->log_sec = le64_to_cpu(pdu->log_sec);
1132 pdu->log_usec = le64_to_cpu(pdu->log_usec);
1133}
1134
1135static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
1136 struct cmd_iolog_pdu *pdu)
1137{
1138#ifdef CONFIG_ZLIB
1139 struct cmd_iolog_pdu *ret;
1140 z_stream stream;
1141 uint32_t nr_samples;
1142 size_t total;
1143 void *p;
1144
1145 stream.zalloc = Z_NULL;
1146 stream.zfree = Z_NULL;
1147 stream.opaque = Z_NULL;
1148 stream.avail_in = 0;
1149 stream.next_in = Z_NULL;
1150
1151 if (inflateInit(&stream) != Z_OK)
1152 return NULL;
1153
1154 /*
1155 * Get header first, it's not compressed
1156 */
1157 nr_samples = le64_to_cpu(pdu->nr_samples);
1158
1159 total = nr_samples * __log_entry_sz(le32_to_cpu(pdu->log_offset));
1160 ret = malloc(total + sizeof(*pdu));
1161 ret->nr_samples = nr_samples;
1162
1163 memcpy(ret, pdu, sizeof(*pdu));
1164
1165 p = (void *) ret + sizeof(*pdu);
1166
1167 stream.avail_in = cmd->pdu_len - sizeof(*pdu);
1168 stream.next_in = (void *) pdu + sizeof(*pdu);
1169 while (stream.avail_in) {
1170 unsigned int this_chunk = 65536;
1171 unsigned int this_len;
1172 int err;
1173
1174 if (this_chunk > total)
1175 this_chunk = total;
1176
1177 stream.avail_out = this_chunk;
1178 stream.next_out = p;
1179 err = inflate(&stream, Z_NO_FLUSH);
1180 /* may be Z_OK, or Z_STREAM_END */
1181 if (err < 0) {
1182 log_err("fio: inflate error %d\n", err);
1183 free(ret);
1184 ret = NULL;
1185 goto err;
1186 }
1187
1188 this_len = this_chunk - stream.avail_out;
1189 p += this_len;
1190 total -= this_len;
1191 }
1192
1193err:
1194 inflateEnd(&stream);
1195 return ret;
1196#else
1197 return NULL;
1198#endif
1199}
1200
1201/*
1202 * This has been compressed on the server side, since it can be big.
1203 * Uncompress here.
1204 */
1205static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
1206{
1207 struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
1208 struct cmd_iolog_pdu *ret;
1209 uint64_t i;
1210 void *samples;
1211
1212 /*
1213 * Convert if compressed and we support it. If it's not
1214 * compressed, we need not do anything.
1215 */
1216 if (le32_to_cpu(pdu->compressed)) {
1217#ifndef CONFIG_ZLIB
1218 log_err("fio: server sent compressed data by mistake\n");
1219 return NULL;
1220#endif
1221 ret = convert_iolog_gz(cmd, pdu);
1222 if (!ret) {
1223 log_err("fio: failed decompressing log\n");
1224 return NULL;
1225 }
1226 } else
1227 ret = pdu;
1228
1229 ret->nr_samples = le64_to_cpu(ret->nr_samples);
1230 ret->thread_number = le32_to_cpu(ret->thread_number);
1231 ret->log_type = le32_to_cpu(ret->log_type);
1232 ret->compressed = le32_to_cpu(ret->compressed);
1233 ret->log_offset = le32_to_cpu(ret->log_offset);
1234
1235 samples = &ret->samples[0];
1236 for (i = 0; i < ret->nr_samples; i++) {
1237 struct io_sample *s;
1238
1239 s = __get_sample(samples, ret->log_offset, i);
1240 s->time = le64_to_cpu(s->time);
1241 s->val = le64_to_cpu(s->val);
1242 s->__ddir = le32_to_cpu(s->__ddir);
1243 s->bs = le32_to_cpu(s->bs);
1244
1245 if (ret->log_offset) {
1246 struct io_sample_offset *so = (void *) s;
1247
1248 so->offset = le64_to_cpu(so->offset);
1249 }
1250 }
1251
1252 return ret;
1253}
1254
1255int fio_handle_client(struct fio_client *client)
1256{
1257 struct client_ops *ops = client->ops;
1258 struct fio_net_cmd *cmd;
1259
1260 dprint(FD_NET, "client: handle %s\n", client->hostname);
1261
1262 cmd = fio_net_recv_cmd(client->fd);
1263 if (!cmd)
1264 return 0;
1265
1266 dprint(FD_NET, "client: got cmd op %s from %s (pdu=%u)\n",
1267 fio_server_op(cmd->opcode), client->hostname, cmd->pdu_len);
1268
1269 switch (cmd->opcode) {
1270 case FIO_NET_CMD_QUIT:
1271 if (ops->quit)
1272 ops->quit(client, cmd);
1273 remove_client(client);
1274 free(cmd);
1275 break;
1276 case FIO_NET_CMD_TEXT:
1277 convert_text(cmd);
1278 ops->text(client, cmd);
1279 free(cmd);
1280 break;
1281 case FIO_NET_CMD_DU: {
1282 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1283
1284 convert_dus(&du->dus);
1285 convert_agg(&du->agg);
1286
1287 ops->disk_util(client, cmd);
1288 free(cmd);
1289 break;
1290 }
1291 case FIO_NET_CMD_TS: {
1292 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
1293
1294 convert_ts(&p->ts, &p->ts);
1295 convert_gs(&p->rs, &p->rs);
1296
1297 ops->thread_status(client, cmd);
1298 free(cmd);
1299 break;
1300 }
1301 case FIO_NET_CMD_GS: {
1302 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
1303
1304 convert_gs(gs, gs);
1305
1306 ops->group_stats(client, cmd);
1307 free(cmd);
1308 break;
1309 }
1310 case FIO_NET_CMD_ETA: {
1311 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1312
1313 remove_reply_cmd(client, cmd);
1314 convert_jobs_eta(je);
1315 handle_eta(client, cmd);
1316 free(cmd);
1317 break;
1318 }
1319 case FIO_NET_CMD_PROBE:
1320 remove_reply_cmd(client, cmd);
1321 ops->probe(client, cmd);
1322 free(cmd);
1323 break;
1324 case FIO_NET_CMD_SERVER_START:
1325 client->state = Client_running;
1326 if (ops->job_start)
1327 ops->job_start(client, cmd);
1328 free(cmd);
1329 break;
1330 case FIO_NET_CMD_START: {
1331 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1332
1333 pdu->jobs = le32_to_cpu(pdu->jobs);
1334 ops->start(client, cmd);
1335 free(cmd);
1336 break;
1337 }
1338 case FIO_NET_CMD_STOP: {
1339 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1340
1341 convert_stop(cmd);
1342 client->state = Client_stopped;
1343 client->error = le32_to_cpu(pdu->error);
1344 client->signal = le32_to_cpu(pdu->signal);
1345 ops->stop(client, cmd);
1346 free(cmd);
1347 break;
1348 }
1349 case FIO_NET_CMD_ADD_JOB: {
1350 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
1351
1352 client->thread_number = le32_to_cpu(pdu->thread_number);
1353 client->groupid = le32_to_cpu(pdu->groupid);
1354
1355 if (ops->add_job)
1356 ops->add_job(client, cmd);
1357 free(cmd);
1358 break;
1359 }
1360 case FIO_NET_CMD_IOLOG:
1361 if (ops->iolog) {
1362 struct cmd_iolog_pdu *pdu;
1363
1364 pdu = convert_iolog(cmd);
1365 ops->iolog(client, pdu);
1366 }
1367 free(cmd);
1368 break;
1369 case FIO_NET_CMD_UPDATE_JOB:
1370 ops->update_job(client, cmd);
1371 remove_reply_cmd(client, cmd);
1372 free(cmd);
1373 break;
1374 default:
1375 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
1376 free(cmd);
1377 break;
1378 }
1379
1380 return 1;
1381}
1382
1383static void request_client_etas(struct client_ops *ops)
1384{
1385 struct fio_client *client;
1386 struct flist_head *entry;
1387 struct client_eta *eta;
1388 int skipped = 0;
1389
1390 dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
1391
1392 eta = calloc(1, sizeof(*eta) + __THREAD_RUNSTR_SZ(REAL_MAX_JOBS));
1393 eta->pending = nr_clients;
1394
1395 flist_for_each(entry, &client_list) {
1396 client = flist_entry(entry, struct fio_client, list);
1397
1398 if (!flist_empty(&client->eta_list)) {
1399 skipped++;
1400 continue;
1401 }
1402 if (client->state != Client_running)
1403 continue;
1404
1405 assert(!client->eta_in_flight);
1406 flist_add_tail(&client->eta_list, &eta_list);
1407 client->eta_in_flight = eta;
1408 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
1409 (uintptr_t) eta, &client->cmd_list);
1410 }
1411
1412 while (skipped--)
1413 fio_client_dec_jobs_eta(eta, ops->eta);
1414
1415 dprint(FD_NET, "client: requested eta tag %p\n", eta);
1416}
1417
1418static int client_check_cmd_timeout(struct fio_client *client,
1419 struct timeval *now)
1420{
1421 struct fio_net_cmd_reply *reply;
1422 struct flist_head *entry, *tmp;
1423 int ret = 0;
1424
1425 flist_for_each_safe(entry, tmp, &client->cmd_list) {
1426 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1427
1428 if (mtime_since(&reply->tv, now) < FIO_NET_CLIENT_TIMEOUT)
1429 continue;
1430
1431 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
1432 fio_server_op(reply->opcode));
1433 flist_del(&reply->list);
1434 free(reply);
1435 ret = 1;
1436 }
1437
1438 return flist_empty(&client->cmd_list) && ret;
1439}
1440
1441static int fio_check_clients_timed_out(void)
1442{
1443 struct fio_client *client;
1444 struct flist_head *entry, *tmp;
1445 struct timeval tv;
1446 int ret = 0;
1447
1448 fio_gettime(&tv, NULL);
1449
1450 flist_for_each_safe(entry, tmp, &client_list) {
1451 client = flist_entry(entry, struct fio_client, list);
1452
1453 if (flist_empty(&client->cmd_list))
1454 continue;
1455
1456 if (!client_check_cmd_timeout(client, &tv))
1457 continue;
1458
1459 if (client->ops->timed_out)
1460 client->ops->timed_out(client);
1461 else
1462 log_err("fio: client %s timed out\n", client->hostname);
1463
1464 remove_client(client);
1465 ret = 1;
1466 }
1467
1468 return ret;
1469}
1470
1471int fio_handle_clients(struct client_ops *ops)
1472{
1473 struct pollfd *pfds;
1474 int i, ret = 0, retval = 0;
1475
1476 fio_gettime(&eta_tv, NULL);
1477
1478 pfds = malloc(nr_clients * sizeof(struct pollfd));
1479
1480 init_thread_stat(&client_ts);
1481 init_group_run_stat(&client_gs);
1482
1483 while (!exit_backend && nr_clients) {
1484 struct flist_head *entry, *tmp;
1485 struct fio_client *client;
1486
1487 i = 0;
1488 flist_for_each_safe(entry, tmp, &client_list) {
1489 client = flist_entry(entry, struct fio_client, list);
1490
1491 if (!client->sent_job && !client->ops->stay_connected &&
1492 flist_empty(&client->cmd_list)) {
1493 remove_client(client);
1494 continue;
1495 }
1496
1497 pfds[i].fd = client->fd;
1498 pfds[i].events = POLLIN;
1499 i++;
1500 }
1501
1502 if (!nr_clients)
1503 break;
1504
1505 assert(i == nr_clients);
1506
1507 do {
1508 struct timeval tv;
1509
1510 fio_gettime(&tv, NULL);
1511 if (mtime_since(&eta_tv, &tv) >= 900) {
1512 request_client_etas(ops);
1513 memcpy(&eta_tv, &tv, sizeof(tv));
1514
1515 if (fio_check_clients_timed_out())
1516 break;
1517 }
1518
1519 ret = poll(pfds, nr_clients, ops->eta_msec);
1520 if (ret < 0) {
1521 if (errno == EINTR)
1522 continue;
1523 log_err("fio: poll clients: %s\n", strerror(errno));
1524 break;
1525 } else if (!ret)
1526 continue;
1527 } while (ret <= 0);
1528
1529 for (i = 0; i < nr_clients; i++) {
1530 if (!(pfds[i].revents & POLLIN))
1531 continue;
1532
1533 client = find_client_by_fd(pfds[i].fd);
1534 if (!client) {
1535 log_err("fio: unknown client fd %ld\n", (long) pfds[i].fd);
1536 continue;
1537 }
1538 if (!fio_handle_client(client)) {
1539 log_info("client: host=%s disconnected\n",
1540 client->hostname);
1541 remove_client(client);
1542 retval = 1;
1543 } else if (client->error)
1544 retval = 1;
1545 fio_put_client(client);
1546 }
1547 }
1548
1549 fio_client_json_fini();
1550
1551 free(pfds);
1552 return retval;
1553}
fio - Flexible IO Tester