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engines/io_uring: add new I/O engine for uring passthrough support
[fio.git] / client.c
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CommitLineData
1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <errno.h>
5#include <fcntl.h>
6#include <poll.h>
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <sys/socket.h>
10#include <sys/un.h>
11#include <netinet/in.h>
12#include <arpa/inet.h>
13#include <netdb.h>
14#include <signal.h>
15#ifdef CONFIG_ZLIB
16#include <zlib.h>
17#endif
18
19#include "fio.h"
20#include "client.h"
21#include "server.h"
22#include "flist.h"
23#include "hash.h"
24#include "verify-state.h"
25
26static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
27static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
28static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
29static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
30static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
31static void handle_stop(struct fio_client *client);
32static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
33
34static void convert_text(struct fio_net_cmd *cmd);
35static void client_display_thread_status(struct jobs_eta *je);
36
37struct client_ops fio_client_ops = {
38 .text = handle_text,
39 .disk_util = handle_du,
40 .thread_status = handle_ts,
41 .group_stats = handle_gs,
42 .stop = handle_stop,
43 .start = handle_start,
44 .eta = client_display_thread_status,
45 .probe = handle_probe,
46 .eta_msec = FIO_CLIENT_DEF_ETA_MSEC,
47 .client_type = FIO_CLIENT_TYPE_CLI,
48};
49
50static struct timespec eta_ts;
51
52static FLIST_HEAD(client_list);
53static FLIST_HEAD(eta_list);
54
55static FLIST_HEAD(arg_list);
56
57struct thread_stat client_ts;
58struct group_run_stats client_gs;
59int sum_stat_clients;
60
61static int sum_stat_nr;
62static struct buf_output allclients;
63static struct json_object *root = NULL;
64static struct json_object *job_opt_object = NULL;
65static struct json_array *clients_array = NULL;
66static struct json_array *du_array = NULL;
67
68static int error_clients;
69
70#define FIO_CLIENT_HASH_BITS 7
71#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
72#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
73static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
74
75static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *, bool *);
76
77static void fio_client_add_hash(struct fio_client *client)
78{
79 int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
80
81 bucket &= FIO_CLIENT_HASH_MASK;
82 flist_add(&client->hash_list, &client_hash[bucket]);
83}
84
85static void fio_client_remove_hash(struct fio_client *client)
86{
87 if (!flist_empty(&client->hash_list))
88 flist_del_init(&client->hash_list);
89}
90
91static void fio_init fio_client_hash_init(void)
92{
93 int i;
94
95 for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
96 INIT_FLIST_HEAD(&client_hash[i]);
97}
98
99static int read_data(int fd, void *data, size_t size)
100{
101 ssize_t ret;
102
103 while (size) {
104 ret = read(fd, data, size);
105 if (ret < 0) {
106 if (errno == EAGAIN || errno == EINTR)
107 continue;
108 break;
109 } else if (!ret)
110 break;
111 else {
112 data += ret;
113 size -= ret;
114 }
115 }
116
117 if (size)
118 return EAGAIN;
119
120 return 0;
121}
122
123static int read_ini_data(int fd, void *data, size_t size)
124{
125 char *p = data;
126 int ret = 0;
127 FILE *fp;
128 int dupfd;
129
130 dupfd = dup(fd);
131 if (dupfd < 0)
132 return errno;
133
134 fp = fdopen(dupfd, "r");
135 if (!fp) {
136 ret = errno;
137 close(dupfd);
138 goto out;
139 }
140
141 while (1) {
142 ssize_t len;
143 char buf[OPT_LEN_MAX+1], *sub;
144
145 if (!fgets(buf, sizeof(buf), fp)) {
146 if (ferror(fp)) {
147 if (errno == EAGAIN || errno == EINTR)
148 continue;
149 ret = errno;
150 }
151 break;
152 }
153
154 sub = fio_option_dup_subs(buf);
155 len = strlen(sub);
156 if (len + 1 > size) {
157 log_err("fio: no space left to read data\n");
158 free(sub);
159 ret = ENOSPC;
160 break;
161 }
162
163 memcpy(p, sub, len);
164 free(sub);
165 p += len;
166 *p = '\0';
167 size -= len;
168 }
169
170 fclose(fp);
171out:
172 return ret;
173}
174
175static void fio_client_json_init(void)
176{
177 char time_buf[32];
178 time_t time_p;
179
180 if (!(output_format & FIO_OUTPUT_JSON))
181 return;
182
183 time(&time_p);
184 os_ctime_r((const time_t *) &time_p, time_buf, sizeof(time_buf));
185 time_buf[strlen(time_buf) - 1] = '\0';
186
187 root = json_create_object();
188 json_object_add_value_string(root, "fio version", fio_version_string);
189 json_object_add_value_int(root, "timestamp", time_p);
190 json_object_add_value_string(root, "time", time_buf);
191
192 job_opt_object = json_create_object();
193 json_object_add_value_object(root, "global options", job_opt_object);
194 clients_array = json_create_array();
195 json_object_add_value_array(root, "client_stats", clients_array);
196 du_array = json_create_array();
197 json_object_add_value_array(root, "disk_util", du_array);
198}
199
200static void fio_client_json_fini(void)
201{
202 struct buf_output out;
203
204 if (!root)
205 return;
206
207 buf_output_init(&out);
208
209 __log_buf(&out, "\n");
210 json_print_object(root, &out);
211 __log_buf(&out, "\n");
212 log_info_buf(out.buf, out.buflen);
213
214 buf_output_free(&out);
215
216 json_free_object(root);
217 root = NULL;
218 job_opt_object = NULL;
219 clients_array = NULL;
220 du_array = NULL;
221}
222
223static struct fio_client *find_client_by_fd(int fd)
224{
225 int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
226 struct fio_client *client;
227 struct flist_head *entry;
228
229 flist_for_each(entry, &client_hash[bucket]) {
230 client = flist_entry(entry, struct fio_client, hash_list);
231
232 if (client->fd == fd) {
233 client->refs++;
234 return client;
235 }
236 }
237
238 return NULL;
239}
240
241void fio_put_client(struct fio_client *client)
242{
243 if (--client->refs)
244 return;
245
246 log_info_buf(client->buf.buf, client->buf.buflen);
247 buf_output_free(&client->buf);
248
249 free(client->hostname);
250 if (client->argv)
251 free(client->argv);
252 if (client->name)
253 free(client->name);
254 while (client->nr_files) {
255 struct client_file *cf = &client->files[--client->nr_files];
256
257 free(cf->file);
258 }
259 if (client->files)
260 free(client->files);
261 if (client->opt_lists)
262 free(client->opt_lists);
263
264 if (!client->did_stat)
265 sum_stat_clients--;
266
267 if (client->error)
268 error_clients++;
269
270 free(client);
271}
272
273static int fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
274{
275 if (!--eta->pending) {
276 eta_fn(&eta->eta);
277 free(eta);
278 return 0;
279 }
280
281 return 1;
282}
283
284static void fio_drain_client_text(struct fio_client *client)
285{
286 do {
287 struct fio_net_cmd *cmd = NULL;
288
289 if (fio_server_poll_fd(client->fd, POLLIN, 0))
290 cmd = fio_net_recv_cmd(client->fd, false);
291 if (!cmd)
292 break;
293
294 if (cmd->opcode == FIO_NET_CMD_TEXT) {
295 convert_text(cmd);
296 client->ops->text(client, cmd);
297 }
298
299 free(cmd);
300 } while (1);
301}
302
303static void remove_client(struct fio_client *client)
304{
305 assert(client->refs);
306
307 dprint(FD_NET, "client: removed <%s>\n", client->hostname);
308
309 fio_drain_client_text(client);
310
311 if (!flist_empty(&client->list))
312 flist_del_init(&client->list);
313
314 fio_client_remove_hash(client);
315
316 if (!flist_empty(&client->eta_list)) {
317 flist_del_init(&client->eta_list);
318 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
319 }
320
321 close(client->fd);
322 client->fd = -1;
323
324 if (client->ops->removed)
325 client->ops->removed(client);
326
327 nr_clients--;
328 fio_put_client(client);
329}
330
331struct fio_client *fio_get_client(struct fio_client *client)
332{
333 client->refs++;
334 return client;
335}
336
337static void __fio_client_add_cmd_option(struct fio_client *client,
338 const char *opt)
339{
340 int index;
341
342 index = client->argc++;
343 client->argv = realloc(client->argv, sizeof(char *) * client->argc);
344 client->argv[index] = strdup(opt);
345 dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
346}
347
348void fio_client_add_cmd_option(void *cookie, const char *opt)
349{
350 struct fio_client *client = cookie;
351 struct flist_head *entry;
352
353 if (!client || !opt)
354 return;
355
356 __fio_client_add_cmd_option(client, opt);
357
358 /*
359 * Duplicate arguments to shared client group
360 */
361 flist_for_each(entry, &arg_list) {
362 client = flist_entry(entry, struct fio_client, arg_list);
363
364 __fio_client_add_cmd_option(client, opt);
365 }
366}
367
368static struct fio_client *get_new_client(void)
369{
370 struct fio_client *client;
371
372 client = malloc(sizeof(*client));
373 memset(client, 0, sizeof(*client));
374
375 INIT_FLIST_HEAD(&client->list);
376 INIT_FLIST_HEAD(&client->hash_list);
377 INIT_FLIST_HEAD(&client->arg_list);
378 INIT_FLIST_HEAD(&client->eta_list);
379 INIT_FLIST_HEAD(&client->cmd_list);
380
381 buf_output_init(&client->buf);
382
383 return client;
384}
385
386struct fio_client *fio_client_add_explicit(struct client_ops *ops,
387 const char *hostname, int type,
388 int port)
389{
390 struct fio_client *client;
391
392 client = get_new_client();
393
394 if (type == Fio_client_socket)
395 client->is_sock = true;
396 else {
397 int ipv6;
398
399 ipv6 = type == Fio_client_ipv6;
400 if (fio_server_parse_host(hostname, ipv6,
401 &client->addr.sin_addr,
402 &client->addr6.sin6_addr))
403 goto err;
404
405 client->port = port;
406 }
407
408 client->fd = -1;
409 client->ops = ops;
410 client->refs = 1;
411 client->type = ops->client_type;
412 client->hostname = strdup(hostname);
413
414 __fio_client_add_cmd_option(client, "fio");
415
416 flist_add(&client->list, &client_list);
417 nr_clients++;
418 dprint(FD_NET, "client: added <%s>\n", client->hostname);
419 return client;
420err:
421 free(client);
422 return NULL;
423}
424
425int fio_client_add_ini_file(void *cookie, const char *ini_file, bool remote)
426{
427 struct fio_client *client = cookie;
428 struct client_file *cf;
429 size_t new_size;
430 void *new_files;
431
432 if (!client)
433 return 1;
434
435 dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
436
437 new_size = (client->nr_files + 1) * sizeof(struct client_file);
438 new_files = realloc(client->files, new_size);
439 if (!new_files)
440 return 1;
441
442 client->files = new_files;
443 cf = &client->files[client->nr_files];
444 cf->file = strdup(ini_file);
445 cf->remote = remote;
446 client->nr_files++;
447 return 0;
448}
449
450int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
451{
452 struct fio_client *existing = *cookie;
453 struct fio_client *client;
454
455 if (existing) {
456 /*
457 * We always add our "exec" name as the option, hence 1
458 * means empty.
459 */
460 if (existing->argc == 1)
461 flist_add_tail(&existing->arg_list, &arg_list);
462 else {
463 while (!flist_empty(&arg_list))
464 flist_del_init(arg_list.next);
465 }
466 }
467
468 client = get_new_client();
469
470 if (fio_server_parse_string(hostname, &client->hostname,
471 &client->is_sock, &client->port,
472 &client->addr.sin_addr,
473 &client->addr6.sin6_addr,
474 &client->ipv6)) {
475 fio_put_client(client);
476 return -1;
477 }
478
479 client->fd = -1;
480 client->ops = ops;
481 client->refs = 1;
482 client->type = ops->client_type;
483
484 __fio_client_add_cmd_option(client, "fio");
485
486 flist_add(&client->list, &client_list);
487 nr_clients++;
488 dprint(FD_NET, "client: added <%s>\n", client->hostname);
489 *cookie = client;
490 return 0;
491}
492
493static const char *server_name(struct fio_client *client, char *buf,
494 size_t bufsize)
495{
496 const char *from;
497
498 if (client->ipv6)
499 from = inet_ntop(AF_INET6, (struct sockaddr *) &client->addr6.sin6_addr, buf, bufsize);
500 else if (client->is_sock)
501 from = "sock";
502 else
503 from = inet_ntop(AF_INET, (struct sockaddr *) &client->addr.sin_addr, buf, bufsize);
504
505 return from;
506}
507
508static void probe_client(struct fio_client *client)
509{
510 struct cmd_client_probe_pdu pdu;
511 const char *sname;
512 uint64_t tag;
513 char buf[64];
514
515 dprint(FD_NET, "client: send probe\n");
516
517#ifdef CONFIG_ZLIB
518 pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
519#else
520 pdu.flags = 0;
521#endif
522
523 sname = server_name(client, buf, sizeof(buf));
524 memset(pdu.server, 0, sizeof(pdu.server));
525 snprintf((char *) pdu.server, sizeof(pdu.server), "%s", sname);
526
527 fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
528}
529
530static int fio_client_connect_ip(struct fio_client *client)
531{
532 struct sockaddr *addr;
533 socklen_t socklen;
534 int fd, domain;
535
536 if (client->ipv6) {
537 client->addr6.sin6_family = AF_INET6;
538 client->addr6.sin6_port = htons(client->port);
539 domain = AF_INET6;
540 addr = (struct sockaddr *) &client->addr6;
541 socklen = sizeof(client->addr6);
542 } else {
543 client->addr.sin_family = AF_INET;
544 client->addr.sin_port = htons(client->port);
545 domain = AF_INET;
546 addr = (struct sockaddr *) &client->addr;
547 socklen = sizeof(client->addr);
548 }
549
550 fd = socket(domain, SOCK_STREAM, 0);
551 if (fd < 0) {
552 int ret = -errno;
553
554 log_err("fio: socket: %s\n", strerror(errno));
555 return ret;
556 }
557
558 if (connect(fd, addr, socklen) < 0) {
559 int ret = -errno;
560
561 log_err("fio: connect: %s\n", strerror(errno));
562 log_err("fio: failed to connect to %s:%u\n", client->hostname,
563 client->port);
564 close(fd);
565 return ret;
566 }
567
568 return fd;
569}
570
571static int fio_client_connect_sock(struct fio_client *client)
572{
573 struct sockaddr_un *addr = &client->addr_un;
574 socklen_t len;
575 int fd;
576
577 memset(addr, 0, sizeof(*addr));
578 addr->sun_family = AF_UNIX;
579 snprintf(addr->sun_path, sizeof(addr->sun_path), "%s",
580 client->hostname);
581
582 fd = socket(AF_UNIX, SOCK_STREAM, 0);
583 if (fd < 0) {
584 int ret = -errno;
585
586 log_err("fio: socket: %s\n", strerror(errno));
587 return ret;
588 }
589
590 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
591 if (connect(fd, (struct sockaddr *) addr, len) < 0) {
592 int ret = -errno;
593
594 log_err("fio: connect; %s\n", strerror(errno));
595 close(fd);
596 return ret;
597 }
598
599 return fd;
600}
601
602int fio_client_connect(struct fio_client *client)
603{
604 int fd;
605
606 dprint(FD_NET, "client: connect to host %s\n", client->hostname);
607
608 if (client->is_sock)
609 fd = fio_client_connect_sock(client);
610 else
611 fd = fio_client_connect_ip(client);
612
613 dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
614
615 if (fd < 0)
616 return fd;
617
618 client->fd = fd;
619 fio_client_add_hash(client);
620 client->state = Client_connected;
621
622 probe_client(client);
623 return 0;
624}
625
626int fio_client_terminate(struct fio_client *client)
627{
628 return fio_net_send_quit(client->fd);
629}
630
631static void fio_clients_terminate(void)
632{
633 struct flist_head *entry;
634 struct fio_client *client;
635
636 dprint(FD_NET, "client: terminate clients\n");
637
638 flist_for_each(entry, &client_list) {
639 client = flist_entry(entry, struct fio_client, list);
640 fio_client_terminate(client);
641 }
642}
643
644static void sig_int(int sig)
645{
646 dprint(FD_NET, "client: got signal %d\n", sig);
647 fio_clients_terminate();
648}
649
650static void client_signal_handler(void)
651{
652 struct sigaction act;
653
654 memset(&act, 0, sizeof(act));
655 act.sa_handler = sig_int;
656 act.sa_flags = SA_RESTART;
657 sigaction(SIGINT, &act, NULL);
658
659 memset(&act, 0, sizeof(act));
660 act.sa_handler = sig_int;
661 act.sa_flags = SA_RESTART;
662 sigaction(SIGTERM, &act, NULL);
663
664/* Windows uses SIGBREAK as a quit signal from other applications */
665#ifdef WIN32
666 memset(&act, 0, sizeof(act));
667 act.sa_handler = sig_int;
668 act.sa_flags = SA_RESTART;
669 sigaction(SIGBREAK, &act, NULL);
670#endif
671
672 memset(&act, 0, sizeof(act));
673 act.sa_handler = sig_show_status;
674 act.sa_flags = SA_RESTART;
675 sigaction(SIGUSR1, &act, NULL);
676}
677
678static int send_client_cmd_line(struct fio_client *client)
679{
680 struct cmd_single_line_pdu *cslp;
681 struct cmd_line_pdu *clp;
682 unsigned long offset;
683 unsigned int *lens;
684 void *pdu;
685 size_t mem;
686 int i, ret;
687
688 dprint(FD_NET, "client: send cmdline %d\n", client->argc);
689
690 lens = malloc(client->argc * sizeof(unsigned int));
691
692 /*
693 * Find out how much mem we need
694 */
695 for (i = 0, mem = 0; i < client->argc; i++) {
696 lens[i] = strlen(client->argv[i]) + 1;
697 mem += lens[i];
698 }
699
700 /*
701 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
702 */
703 mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
704
705 pdu = malloc(mem);
706 clp = pdu;
707 offset = sizeof(*clp);
708
709 for (i = 0; i < client->argc; i++) {
710 uint16_t arg_len = lens[i];
711
712 cslp = pdu + offset;
713 strcpy((char *) cslp->text, client->argv[i]);
714 cslp->len = cpu_to_le16(arg_len);
715 offset += sizeof(*cslp) + arg_len;
716 }
717
718 free(lens);
719 clp->lines = cpu_to_le16(client->argc);
720 clp->client_type = __cpu_to_le16(client->type);
721 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, NULL, NULL);
722 free(pdu);
723 return ret;
724}
725
726int fio_clients_connect(void)
727{
728 struct fio_client *client;
729 struct flist_head *entry, *tmp;
730 int ret;
731
732#ifdef WIN32
733 WSADATA wsd;
734 WSAStartup(MAKEWORD(2, 2), &wsd);
735#endif
736
737 dprint(FD_NET, "client: connect all\n");
738
739 client_signal_handler();
740
741 flist_for_each_safe(entry, tmp, &client_list) {
742 client = flist_entry(entry, struct fio_client, list);
743
744 ret = fio_client_connect(client);
745 if (ret) {
746 remove_client(client);
747 continue;
748 }
749
750 if (client->argc > 1)
751 send_client_cmd_line(client);
752 }
753
754 return !nr_clients;
755}
756
757int fio_start_client(struct fio_client *client)
758{
759 dprint(FD_NET, "client: start %s\n", client->hostname);
760 return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
761}
762
763int fio_start_all_clients(void)
764{
765 struct fio_client *client;
766 struct flist_head *entry, *tmp;
767 int ret;
768
769 dprint(FD_NET, "client: start all\n");
770
771 fio_client_json_init();
772
773 flist_for_each_safe(entry, tmp, &client_list) {
774 client = flist_entry(entry, struct fio_client, list);
775
776 ret = fio_start_client(client);
777 if (ret) {
778 remove_client(client);
779 continue;
780 }
781 }
782
783 return flist_empty(&client_list);
784}
785
786static int __fio_client_send_remote_ini(struct fio_client *client,
787 const char *filename)
788{
789 struct cmd_load_file_pdu *pdu;
790 size_t p_size;
791 int ret;
792
793 dprint(FD_NET, "send remote ini %s to %s\n", filename, client->hostname);
794
795 p_size = sizeof(*pdu) + strlen(filename) + 1;
796 pdu = malloc(p_size);
797 memset(pdu, 0, p_size);
798 pdu->name_len = strlen(filename);
799 strcpy((char *) pdu->file, filename);
800 pdu->client_type = cpu_to_le16((uint16_t) client->type);
801
802 client->sent_job = true;
803 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_LOAD_FILE, pdu, p_size,NULL, NULL);
804 free(pdu);
805 return ret;
806}
807
808/*
809 * Send file contents to server backend. We could use sendfile(), but to remain
810 * more portable lets just read/write the darn thing.
811 */
812static int __fio_client_send_local_ini(struct fio_client *client,
813 const char *filename)
814{
815 struct cmd_job_pdu *pdu;
816 size_t p_size;
817 struct stat sb;
818 char *p;
819 void *buf;
820 off_t len;
821 int fd, ret;
822
823 dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
824
825 fd = open(filename, O_RDONLY);
826 if (fd < 0) {
827 ret = -errno;
828 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
829 return ret;
830 }
831
832 if (fstat(fd, &sb) < 0) {
833 ret = -errno;
834 log_err("fio: job file stat: %s\n", strerror(errno));
835 close(fd);
836 return ret;
837 }
838
839 /*
840 * Add extra space for variable expansion, but doesn't guarantee.
841 */
842 sb.st_size += OPT_LEN_MAX;
843 p_size = sb.st_size + sizeof(*pdu);
844 pdu = malloc(p_size);
845 buf = pdu->buf;
846
847 len = sb.st_size;
848 p = buf;
849 if (read_ini_data(fd, p, len)) {
850 log_err("fio: failed reading job file %s\n", filename);
851 close(fd);
852 free(pdu);
853 return 1;
854 }
855
856 pdu->buf_len = __cpu_to_le32(sb.st_size);
857 pdu->client_type = cpu_to_le32(client->type);
858
859 client->sent_job = true;
860 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, pdu, p_size, NULL, NULL);
861 free(pdu);
862 close(fd);
863 return ret;
864}
865
866int fio_client_send_ini(struct fio_client *client, const char *filename,
867 bool remote)
868{
869 int ret;
870
871 if (!remote)
872 ret = __fio_client_send_local_ini(client, filename);
873 else
874 ret = __fio_client_send_remote_ini(client, filename);
875
876 if (!ret)
877 client->sent_job = true;
878
879 return ret;
880}
881
882static int fio_client_send_cf(struct fio_client *client,
883 struct client_file *cf)
884{
885 return fio_client_send_ini(client, cf->file, cf->remote);
886}
887
888int fio_clients_send_ini(const char *filename)
889{
890 struct fio_client *client;
891 struct flist_head *entry, *tmp;
892
893 flist_for_each_safe(entry, tmp, &client_list) {
894 bool failed = false;
895
896 client = flist_entry(entry, struct fio_client, list);
897
898 if (client->nr_files) {
899 int i;
900
901 for (i = 0; i < client->nr_files; i++) {
902 struct client_file *cf;
903
904 cf = &client->files[i];
905
906 if (fio_client_send_cf(client, cf)) {
907 failed = true;
908 remove_client(client);
909 break;
910 }
911 }
912 }
913 if (client->sent_job || failed)
914 continue;
915 if (!filename || fio_client_send_ini(client, filename, 0))
916 remove_client(client);
917 }
918
919 return !nr_clients;
920}
921
922int fio_client_update_options(struct fio_client *client,
923 struct thread_options *o, uint64_t *tag)
924{
925 struct cmd_add_job_pdu pdu;
926
927 pdu.thread_number = cpu_to_le32(client->thread_number);
928 pdu.groupid = cpu_to_le32(client->groupid);
929 convert_thread_options_to_net(&pdu.top, o);
930
931 return fio_net_send_cmd(client->fd, FIO_NET_CMD_UPDATE_JOB, &pdu, sizeof(pdu), tag, &client->cmd_list);
932}
933
934static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
935{
936 dst->max_val = le64_to_cpu(src->max_val);
937 dst->min_val = le64_to_cpu(src->min_val);
938 dst->samples = le64_to_cpu(src->samples);
939
940 /*
941 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
942 */
943 dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
944 dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
945}
946
947static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
948{
949 int i, j, k;
950
951 dst->error = le32_to_cpu(src->error);
952 dst->thread_number = le32_to_cpu(src->thread_number);
953 dst->groupid = le32_to_cpu(src->groupid);
954 dst->pid = le32_to_cpu(src->pid);
955 dst->members = le32_to_cpu(src->members);
956 dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
957 dst->ioprio = le32_to_cpu(src->ioprio);
958 dst->disable_prio_stat = le32_to_cpu(src->disable_prio_stat);
959
960 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
961 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
962 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
963 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
964 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
965 convert_io_stat(&dst->iops_stat[i], &src->iops_stat[i]);
966 }
967 convert_io_stat(&dst->sync_stat, &src->sync_stat);
968
969 dst->usr_time = le64_to_cpu(src->usr_time);
970 dst->sys_time = le64_to_cpu(src->sys_time);
971 dst->ctx = le64_to_cpu(src->ctx);
972 dst->minf = le64_to_cpu(src->minf);
973 dst->majf = le64_to_cpu(src->majf);
974 dst->clat_percentiles = le32_to_cpu(src->clat_percentiles);
975 dst->lat_percentiles = le32_to_cpu(src->lat_percentiles);
976 dst->slat_percentiles = le32_to_cpu(src->slat_percentiles);
977 dst->percentile_precision = le64_to_cpu(src->percentile_precision);
978
979 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
980 fio_fp64_t *fps = &src->percentile_list[i];
981 fio_fp64_t *fpd = &dst->percentile_list[i];
982
983 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
984 }
985
986 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
987 dst->io_u_map[i] = le64_to_cpu(src->io_u_map[i]);
988 dst->io_u_submit[i] = le64_to_cpu(src->io_u_submit[i]);
989 dst->io_u_complete[i] = le64_to_cpu(src->io_u_complete[i]);
990 }
991
992 for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
993 dst->io_u_lat_n[i] = le64_to_cpu(src->io_u_lat_n[i]);
994 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
995 dst->io_u_lat_u[i] = le64_to_cpu(src->io_u_lat_u[i]);
996 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
997 dst->io_u_lat_m[i] = le64_to_cpu(src->io_u_lat_m[i]);
998
999 for (i = 0; i < FIO_LAT_CNT; i++)
1000 for (j = 0; j < DDIR_RWDIR_CNT; j++)
1001 for (k = 0; k < FIO_IO_U_PLAT_NR; k++)
1002 dst->io_u_plat[i][j][k] = le64_to_cpu(src->io_u_plat[i][j][k]);
1003
1004 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1005 dst->io_u_sync_plat[j] = le64_to_cpu(src->io_u_sync_plat[j]);
1006
1007 for (i = 0; i < DDIR_RWDIR_SYNC_CNT; i++)
1008 dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
1009
1010 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1011 dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
1012 dst->drop_io_u[i] = le64_to_cpu(src->drop_io_u[i]);
1013 }
1014
1015 dst->total_submit = le64_to_cpu(src->total_submit);
1016 dst->total_complete = le64_to_cpu(src->total_complete);
1017 dst->nr_zone_resets = le64_to_cpu(src->nr_zone_resets);
1018
1019 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1020 dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
1021 dst->runtime[i] = le64_to_cpu(src->runtime[i]);
1022 }
1023
1024 dst->total_run_time = le64_to_cpu(src->total_run_time);
1025 dst->continue_on_error = le16_to_cpu(src->continue_on_error);
1026 dst->total_err_count = le64_to_cpu(src->total_err_count);
1027 dst->first_error = le32_to_cpu(src->first_error);
1028 dst->kb_base = le32_to_cpu(src->kb_base);
1029 dst->unit_base = le32_to_cpu(src->unit_base);
1030
1031 dst->sig_figs = le32_to_cpu(src->sig_figs);
1032
1033 dst->latency_depth = le32_to_cpu(src->latency_depth);
1034 dst->latency_target = le64_to_cpu(src->latency_target);
1035 dst->latency_window = le64_to_cpu(src->latency_window);
1036 dst->latency_percentile.u.f = fio_uint64_to_double(le64_to_cpu(src->latency_percentile.u.i));
1037
1038 dst->nr_block_infos = le64_to_cpu(src->nr_block_infos);
1039 for (i = 0; i < dst->nr_block_infos; i++)
1040 dst->block_infos[i] = le32_to_cpu(src->block_infos[i]);
1041
1042 dst->ss_dur = le64_to_cpu(src->ss_dur);
1043 dst->ss_state = le32_to_cpu(src->ss_state);
1044 dst->ss_head = le32_to_cpu(src->ss_head);
1045 dst->ss_limit.u.f = fio_uint64_to_double(le64_to_cpu(src->ss_limit.u.i));
1046 dst->ss_slope.u.f = fio_uint64_to_double(le64_to_cpu(src->ss_slope.u.i));
1047 dst->ss_deviation.u.f = fio_uint64_to_double(le64_to_cpu(src->ss_deviation.u.i));
1048 dst->ss_criterion.u.f = fio_uint64_to_double(le64_to_cpu(src->ss_criterion.u.i));
1049
1050 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1051 dst->nr_clat_prio[i] = le32_to_cpu(src->nr_clat_prio[i]);
1052 for (j = 0; j < dst->nr_clat_prio[i]; j++) {
1053 for (k = 0; k < FIO_IO_U_PLAT_NR; k++)
1054 dst->clat_prio[i][j].io_u_plat[k] =
1055 le64_to_cpu(src->clat_prio[i][j].io_u_plat[k]);
1056 convert_io_stat(&dst->clat_prio[i][j].clat_stat,
1057 &src->clat_prio[i][j].clat_stat);
1058 dst->clat_prio[i][j].ioprio =
1059 le32_to_cpu(dst->clat_prio[i][j].ioprio);
1060 }
1061 }
1062
1063 if (dst->ss_state & FIO_SS_DATA) {
1064 for (i = 0; i < dst->ss_dur; i++ ) {
1065 dst->ss_iops_data[i] = le64_to_cpu(src->ss_iops_data[i]);
1066 dst->ss_bw_data[i] = le64_to_cpu(src->ss_bw_data[i]);
1067 }
1068 }
1069
1070 dst->cachehit = le64_to_cpu(src->cachehit);
1071 dst->cachemiss = le64_to_cpu(src->cachemiss);
1072}
1073
1074static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1075{
1076 int i;
1077
1078 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1079 dst->max_run[i] = le64_to_cpu(src->max_run[i]);
1080 dst->min_run[i] = le64_to_cpu(src->min_run[i]);
1081 dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
1082 dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
1083 dst->iobytes[i] = le64_to_cpu(src->iobytes[i]);
1084 dst->agg[i] = le64_to_cpu(src->agg[i]);
1085 }
1086
1087 dst->kb_base = le32_to_cpu(src->kb_base);
1088 dst->unit_base = le32_to_cpu(src->unit_base);
1089 dst->sig_figs = le32_to_cpu(src->sig_figs);
1090 dst->groupid = le32_to_cpu(src->groupid);
1091 dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
1092}
1093
1094static void json_object_add_client_info(struct json_object *obj,
1095 struct fio_client *client)
1096{
1097 const char *hostname = client->hostname ? client->hostname : "";
1098
1099 json_object_add_value_string(obj, "hostname", hostname);
1100 json_object_add_value_int(obj, "port", client->port);
1101}
1102
1103static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
1104{
1105 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
1106 struct flist_head *opt_list = NULL;
1107 struct json_object *tsobj;
1108
1109 if (client->opt_lists && p->ts.thread_number <= client->jobs)
1110 opt_list = &client->opt_lists[p->ts.thread_number - 1];
1111
1112 tsobj = show_thread_status(&p->ts, &p->rs, opt_list, &client->buf);
1113 client->did_stat = true;
1114 if (tsobj) {
1115 json_object_add_client_info(tsobj, client);
1116 json_array_add_value_object(clients_array, tsobj);
1117 }
1118
1119 if (sum_stat_clients <= 1)
1120 return;
1121
1122 sum_thread_stats(&client_ts, &p->ts);
1123 sum_group_stats(&client_gs, &p->rs);
1124
1125 client_ts.members++;
1126 client_ts.thread_number = p->ts.thread_number;
1127 client_ts.groupid = p->ts.groupid;
1128 client_ts.unified_rw_rep = p->ts.unified_rw_rep;
1129 client_ts.sig_figs = p->ts.sig_figs;
1130
1131 if (++sum_stat_nr == sum_stat_clients) {
1132 strcpy(client_ts.name, "All clients");
1133 tsobj = show_thread_status(&client_ts, &client_gs, NULL, &allclients);
1134 if (tsobj) {
1135 json_object_add_client_info(tsobj, client);
1136 json_array_add_value_object(clients_array, tsobj);
1137 }
1138 }
1139}
1140
1141static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd)
1142{
1143 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
1144
1145 if (output_format & FIO_OUTPUT_NORMAL)
1146 show_group_stats(gs, &client->buf);
1147}
1148
1149static void handle_job_opt(struct fio_client *client, struct fio_net_cmd *cmd)
1150{
1151 struct cmd_job_option *pdu = (struct cmd_job_option *) cmd->payload;
1152
1153 pdu->global = le16_to_cpu(pdu->global);
1154 pdu->truncated = le16_to_cpu(pdu->truncated);
1155 pdu->groupid = le32_to_cpu(pdu->groupid);
1156
1157 if (pdu->global) {
1158 if (!job_opt_object)
1159 return;
1160
1161 json_object_add_value_string(job_opt_object,
1162 (const char *)pdu->name,
1163 (const char *)pdu->value);
1164 } else if (client->opt_lists) {
1165 struct flist_head *opt_list = &client->opt_lists[pdu->groupid];
1166 struct print_option *p;
1167
1168 p = malloc(sizeof(*p));
1169 p->name = strdup((const char *)pdu->name);
1170 p->value = pdu->value[0] ? strdup((const char *)pdu->value) :
1171 NULL;
1172 flist_add_tail(&p->list, opt_list);
1173 }
1174}
1175
1176static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd)
1177{
1178 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
1179 const char *buf = (const char *) pdu->buf;
1180 const char *name;
1181 int fio_unused ret;
1182 struct buf_output out;
1183
1184 buf_output_init(&out);
1185
1186 name = client->name ? client->name : client->hostname;
1187
1188 if (!client->skip_newline && !(output_format & FIO_OUTPUT_TERSE))
1189 __log_buf(&out, "<%s> ", name);
1190 __log_buf(&out, "%s", buf);
1191 log_info_buf(out.buf, out.buflen);
1192 buf_output_free(&out);
1193 client->skip_newline = strchr(buf, '\n') == NULL;
1194}
1195
1196static void convert_agg(struct disk_util_agg *agg)
1197{
1198 int i;
1199
1200 for (i = 0; i < 2; i++) {
1201 agg->ios[i] = le64_to_cpu(agg->ios[i]);
1202 agg->merges[i] = le64_to_cpu(agg->merges[i]);
1203 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
1204 agg->ticks[i] = le64_to_cpu(agg->ticks[i]);
1205 }
1206
1207 agg->io_ticks = le64_to_cpu(agg->io_ticks);
1208 agg->time_in_queue = le64_to_cpu(agg->time_in_queue);
1209 agg->slavecount = le32_to_cpu(agg->slavecount);
1210 agg->max_util.u.f = fio_uint64_to_double(le64_to_cpu(agg->max_util.u.i));
1211}
1212
1213static void convert_dus(struct disk_util_stat *dus)
1214{
1215 int i;
1216
1217 for (i = 0; i < 2; i++) {
1218 dus->s.ios[i] = le64_to_cpu(dus->s.ios[i]);
1219 dus->s.merges[i] = le64_to_cpu(dus->s.merges[i]);
1220 dus->s.sectors[i] = le64_to_cpu(dus->s.sectors[i]);
1221 dus->s.ticks[i] = le64_to_cpu(dus->s.ticks[i]);
1222 }
1223
1224 dus->s.io_ticks = le64_to_cpu(dus->s.io_ticks);
1225 dus->s.time_in_queue = le64_to_cpu(dus->s.time_in_queue);
1226 dus->s.msec = le64_to_cpu(dus->s.msec);
1227}
1228
1229static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
1230{
1231 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1232
1233 if (!client->disk_stats_shown)
1234 client->disk_stats_shown = true;
1235
1236 if (output_format & FIO_OUTPUT_JSON) {
1237 struct json_object *duobj;
1238
1239 json_array_add_disk_util(&du->dus, &du->agg, du_array);
1240 duobj = json_array_last_value_object(du_array);
1241 json_object_add_client_info(duobj, client);
1242 }
1243 if (output_format & FIO_OUTPUT_NORMAL) {
1244 __log_buf(&client->buf, "\nDisk stats (read/write):\n");
1245 print_disk_util(&du->dus, &du->agg, 0, &client->buf);
1246 }
1247 if (output_format & FIO_OUTPUT_TERSE && terse_version >= 3) {
1248 print_disk_util(&du->dus, &du->agg, 1, &client->buf);
1249 __log_buf(&client->buf, "\n");
1250 }
1251}
1252
1253static void convert_jobs_eta(struct jobs_eta *je)
1254{
1255 int i;
1256
1257 je->nr_running = le32_to_cpu(je->nr_running);
1258 je->nr_ramp = le32_to_cpu(je->nr_ramp);
1259 je->nr_pending = le32_to_cpu(je->nr_pending);
1260 je->nr_setting_up = le32_to_cpu(je->nr_setting_up);
1261 je->files_open = le32_to_cpu(je->files_open);
1262
1263 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1264 je->m_rate[i] = le64_to_cpu(je->m_rate[i]);
1265 je->t_rate[i] = le64_to_cpu(je->t_rate[i]);
1266 je->m_iops[i] = le32_to_cpu(je->m_iops[i]);
1267 je->t_iops[i] = le32_to_cpu(je->t_iops[i]);
1268 je->rate[i] = le64_to_cpu(je->rate[i]);
1269 je->iops[i] = le32_to_cpu(je->iops[i]);
1270 }
1271
1272 je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
1273 je->eta_sec = le64_to_cpu(je->eta_sec);
1274 je->nr_threads = le32_to_cpu(je->nr_threads);
1275 je->is_pow2 = le32_to_cpu(je->is_pow2);
1276 je->unit_base = le32_to_cpu(je->unit_base);
1277 je->sig_figs = le32_to_cpu(je->sig_figs);
1278}
1279
1280void fio_client_sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
1281{
1282 int i;
1283
1284 dst->nr_running += je->nr_running;
1285 dst->nr_ramp += je->nr_ramp;
1286 dst->nr_pending += je->nr_pending;
1287 dst->nr_setting_up += je->nr_setting_up;
1288 dst->files_open += je->files_open;
1289
1290 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1291 dst->m_rate[i] += je->m_rate[i];
1292 dst->t_rate[i] += je->t_rate[i];
1293 dst->m_iops[i] += je->m_iops[i];
1294 dst->t_iops[i] += je->t_iops[i];
1295 dst->rate[i] += je->rate[i];
1296 dst->iops[i] += je->iops[i];
1297 }
1298
1299 dst->elapsed_sec += je->elapsed_sec;
1300
1301 if (je->eta_sec > dst->eta_sec)
1302 dst->eta_sec = je->eta_sec;
1303
1304 dst->nr_threads += je->nr_threads;
1305
1306 /*
1307 * This wont be correct for multiple strings, but at least it
1308 * works for the basic cases.
1309 */
1310 strcpy((char *) dst->run_str, (char *) je->run_str);
1311}
1312
1313static bool remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
1314{
1315 struct fio_net_cmd_reply *reply = NULL;
1316 struct flist_head *entry;
1317
1318 flist_for_each(entry, &client->cmd_list) {
1319 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1320
1321 if (cmd->tag == (uintptr_t) reply)
1322 break;
1323
1324 reply = NULL;
1325 }
1326
1327 if (!reply) {
1328 log_err("fio: client: unable to find matching tag (%llx)\n", (unsigned long long) cmd->tag);
1329 return false;
1330 }
1331
1332 flist_del(&reply->list);
1333 cmd->tag = reply->saved_tag;
1334 free(reply);
1335 return true;
1336}
1337
1338int fio_client_wait_for_reply(struct fio_client *client, uint64_t tag)
1339{
1340 do {
1341 struct fio_net_cmd_reply *reply = NULL;
1342 struct flist_head *entry;
1343
1344 flist_for_each(entry, &client->cmd_list) {
1345 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1346
1347 if (tag == (uintptr_t) reply)
1348 break;
1349
1350 reply = NULL;
1351 }
1352
1353 if (!reply)
1354 break;
1355
1356 usleep(1000);
1357 } while (1);
1358
1359 return 0;
1360}
1361
1362static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
1363{
1364 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1365 struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
1366
1367 dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
1368
1369 assert(client->eta_in_flight == eta);
1370
1371 client->eta_in_flight = NULL;
1372 flist_del_init(&client->eta_list);
1373 client->eta_timeouts = 0;
1374
1375 if (client->ops->jobs_eta)
1376 client->ops->jobs_eta(client, je);
1377
1378 fio_client_sum_jobs_eta(&eta->eta, je);
1379 fio_client_dec_jobs_eta(eta, client->ops->eta);
1380}
1381
1382static void client_flush_hist_samples(FILE *f, int hist_coarseness, void *samples,
1383 uint64_t sample_size)
1384{
1385 struct io_sample *s;
1386 int log_offset;
1387 uint64_t i, j, nr_samples;
1388 struct io_u_plat_entry *entry;
1389 uint64_t *io_u_plat;
1390
1391 int stride = 1 << hist_coarseness;
1392
1393 if (!sample_size)
1394 return;
1395
1396 s = __get_sample(samples, 0, 0);
1397 log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0;
1398
1399 nr_samples = sample_size / __log_entry_sz(log_offset);
1400
1401 for (i = 0; i < nr_samples; i++) {
1402
1403 s = (struct io_sample *)((char *)__get_sample(samples, log_offset, i) +
1404 i * sizeof(struct io_u_plat_entry));
1405
1406 entry = s->data.plat_entry;
1407 io_u_plat = entry->io_u_plat;
1408
1409 fprintf(f, "%lu, %u, %llu, ", (unsigned long) s->time,
1410 io_sample_ddir(s), (unsigned long long) s->bs);
1411 for (j = 0; j < FIO_IO_U_PLAT_NR - stride; j += stride) {
1412 fprintf(f, "%llu, ", (unsigned long long)hist_sum(j, stride, io_u_plat, NULL));
1413 }
1414 fprintf(f, "%llu\n", (unsigned long long)
1415 hist_sum(FIO_IO_U_PLAT_NR - stride, stride, io_u_plat, NULL));
1416
1417 }
1418}
1419
1420static int fio_client_handle_iolog(struct fio_client *client,
1421 struct fio_net_cmd *cmd)
1422{
1423 struct cmd_iolog_pdu *pdu = NULL;
1424 bool store_direct;
1425 char *log_pathname = NULL;
1426 int ret = 0;
1427
1428 pdu = convert_iolog(cmd, &store_direct);
1429 if (!pdu) {
1430 log_err("fio: failed converting IO log\n");
1431 ret = 1;
1432 goto out;
1433 }
1434
1435 /* allocate buffer big enough for next sprintf() call */
1436 log_pathname = malloc(10 + strlen((char *)pdu->name) +
1437 strlen(client->hostname));
1438 if (!log_pathname) {
1439 log_err("fio: memory allocation of unique pathname failed\n");
1440 ret = -1;
1441 goto out;
1442 }
1443 /* generate a unique pathname for the log file using hostname */
1444 sprintf(log_pathname, "%s.%s", pdu->name, client->hostname);
1445
1446 if (store_direct) {
1447 ssize_t wrote;
1448 size_t sz;
1449 int fd;
1450
1451 fd = open((const char *) log_pathname,
1452 O_WRONLY | O_CREAT | O_TRUNC, 0644);
1453 if (fd < 0) {
1454 log_err("fio: open log %s: %s\n",
1455 log_pathname, strerror(errno));
1456 ret = 1;
1457 goto out;
1458 }
1459
1460 sz = cmd->pdu_len - sizeof(*pdu);
1461 wrote = write(fd, pdu->samples, sz);
1462 close(fd);
1463
1464 if (wrote != sz) {
1465 log_err("fio: short write on compressed log\n");
1466 ret = 1;
1467 goto out;
1468 }
1469
1470 ret = 0;
1471 } else {
1472 FILE *f;
1473 f = fopen((const char *) log_pathname, "w");
1474 if (!f) {
1475 log_err("fio: fopen log %s : %s\n",
1476 log_pathname, strerror(errno));
1477 ret = 1;
1478 goto out;
1479 }
1480
1481 if (pdu->log_type == IO_LOG_TYPE_HIST) {
1482 client_flush_hist_samples(f, pdu->log_hist_coarseness, pdu->samples,
1483 pdu->nr_samples * sizeof(struct io_sample));
1484 } else {
1485 flush_samples(f, pdu->samples,
1486 pdu->nr_samples * sizeof(struct io_sample));
1487 }
1488 fclose(f);
1489 ret = 0;
1490 }
1491
1492out:
1493 if (pdu && pdu != (void *) cmd->payload)
1494 free(pdu);
1495
1496 if (log_pathname)
1497 free(log_pathname);
1498
1499 return ret;
1500}
1501
1502static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
1503{
1504 struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
1505 const char *os, *arch;
1506 char bit[16];
1507
1508 os = fio_get_os_string(probe->os);
1509 if (!os)
1510 os = "unknown";
1511
1512 arch = fio_get_arch_string(probe->arch);
1513 if (!arch)
1514 os = "unknown";
1515
1516 sprintf(bit, "%d-bit", probe->bpp * 8);
1517 probe->flags = le64_to_cpu(probe->flags);
1518
1519 if (output_format & FIO_OUTPUT_NORMAL) {
1520 log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s, flags=%lx\n",
1521 probe->hostname, probe->bigendian, bit, os, arch,
1522 probe->fio_version, (unsigned long) probe->flags);
1523 }
1524
1525 if (!client->name)
1526 client->name = strdup((char *) probe->hostname);
1527}
1528
1529static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
1530{
1531 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1532
1533 client->state = Client_started;
1534 client->jobs = le32_to_cpu(pdu->jobs);
1535 client->nr_stat = le32_to_cpu(pdu->stat_outputs);
1536
1537 if (client->jobs) {
1538 int i;
1539
1540 if (client->opt_lists)
1541 free(client->opt_lists);
1542
1543 client->opt_lists = malloc(client->jobs * sizeof(struct flist_head));
1544 for (i = 0; i < client->jobs; i++)
1545 INIT_FLIST_HEAD(&client->opt_lists[i]);
1546 }
1547
1548 sum_stat_clients += client->nr_stat;
1549}
1550
1551static void handle_stop(struct fio_client *client)
1552{
1553 if (client->error)
1554 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
1555}
1556
1557static void convert_stop(struct fio_net_cmd *cmd)
1558{
1559 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1560
1561 pdu->error = le32_to_cpu(pdu->error);
1562}
1563
1564static void convert_text(struct fio_net_cmd *cmd)
1565{
1566 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
1567
1568 pdu->level = le32_to_cpu(pdu->level);
1569 pdu->buf_len = le32_to_cpu(pdu->buf_len);
1570 pdu->log_sec = le64_to_cpu(pdu->log_sec);
1571 pdu->log_usec = le64_to_cpu(pdu->log_usec);
1572}
1573
1574static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
1575 struct cmd_iolog_pdu *pdu)
1576{
1577#ifdef CONFIG_ZLIB
1578 struct cmd_iolog_pdu *ret;
1579 z_stream stream;
1580 uint64_t nr_samples;
1581 size_t total;
1582 char *p;
1583
1584 stream.zalloc = Z_NULL;
1585 stream.zfree = Z_NULL;
1586 stream.opaque = Z_NULL;
1587 stream.avail_in = 0;
1588 stream.next_in = Z_NULL;
1589
1590 if (inflateInit(&stream) != Z_OK)
1591 return NULL;
1592
1593 /*
1594 * Get header first, it's not compressed
1595 */
1596 nr_samples = le64_to_cpu(pdu->nr_samples);
1597
1598 if (pdu->log_type == IO_LOG_TYPE_HIST)
1599 total = nr_samples * (__log_entry_sz(le32_to_cpu(pdu->log_offset)) +
1600 sizeof(struct io_u_plat_entry));
1601 else
1602 total = nr_samples * __log_entry_sz(le32_to_cpu(pdu->log_offset));
1603 ret = malloc(total + sizeof(*pdu));
1604 ret->nr_samples = nr_samples;
1605
1606 memcpy(ret, pdu, sizeof(*pdu));
1607
1608 p = (char *) ret + sizeof(*pdu);
1609
1610 stream.avail_in = cmd->pdu_len - sizeof(*pdu);
1611 stream.next_in = (void *)((char *) pdu + sizeof(*pdu));
1612 while (stream.avail_in) {
1613 unsigned int this_chunk = 65536;
1614 unsigned int this_len;
1615 int err;
1616
1617 if (this_chunk > total)
1618 this_chunk = total;
1619
1620 stream.avail_out = this_chunk;
1621 stream.next_out = (void *)p;
1622 err = inflate(&stream, Z_NO_FLUSH);
1623 /* may be Z_OK, or Z_STREAM_END */
1624 if (err < 0) {
1625 /*
1626 * Z_STREAM_ERROR and Z_BUF_ERROR can safely be
1627 * ignored */
1628 if (err == Z_STREAM_ERROR || err == Z_BUF_ERROR)
1629 break;
1630 log_err("fio: inflate error %d\n", err);
1631 free(ret);
1632 ret = NULL;
1633 goto err;
1634 }
1635
1636 this_len = this_chunk - stream.avail_out;
1637 p += this_len;
1638 total -= this_len;
1639 }
1640
1641err:
1642 inflateEnd(&stream);
1643 return ret;
1644#else
1645 return NULL;
1646#endif
1647}
1648
1649/*
1650 * This has been compressed on the server side, since it can be big.
1651 * Uncompress here.
1652 */
1653static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd,
1654 bool *store_direct)
1655{
1656 struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
1657 struct cmd_iolog_pdu *ret;
1658 uint64_t i;
1659 int compressed;
1660 void *samples;
1661
1662 *store_direct = false;
1663
1664 /*
1665 * Convert if compressed and we support it. If it's not
1666 * compressed, we need not do anything.
1667 */
1668 compressed = le32_to_cpu(pdu->compressed);
1669 if (compressed == XMIT_COMPRESSED) {
1670#ifndef CONFIG_ZLIB
1671 log_err("fio: server sent compressed data by mistake\n");
1672 return NULL;
1673#endif
1674 ret = convert_iolog_gz(cmd, pdu);
1675 if (!ret) {
1676 log_err("fio: failed decompressing log\n");
1677 return NULL;
1678 }
1679 } else if (compressed == STORE_COMPRESSED) {
1680 *store_direct = true;
1681 ret = pdu;
1682 } else
1683 ret = pdu;
1684
1685 ret->nr_samples = le64_to_cpu(ret->nr_samples);
1686 ret->thread_number = le32_to_cpu(ret->thread_number);
1687 ret->log_type = le32_to_cpu(ret->log_type);
1688 ret->compressed = le32_to_cpu(ret->compressed);
1689 ret->log_offset = le32_to_cpu(ret->log_offset);
1690 ret->log_prio = le32_to_cpu(ret->log_prio);
1691 ret->log_hist_coarseness = le32_to_cpu(ret->log_hist_coarseness);
1692
1693 if (*store_direct)
1694 return ret;
1695
1696 samples = &ret->samples[0];
1697 for (i = 0; i < ret->nr_samples; i++) {
1698 struct io_sample *s;
1699
1700 s = __get_sample(samples, ret->log_offset, i);
1701 if (ret->log_type == IO_LOG_TYPE_HIST)
1702 s = (struct io_sample *)((char *)s + sizeof(struct io_u_plat_entry) * i);
1703
1704 s->time = le64_to_cpu(s->time);
1705 s->data.val = le64_to_cpu(s->data.val);
1706 s->__ddir = __le32_to_cpu(s->__ddir);
1707 s->bs = le64_to_cpu(s->bs);
1708 s->priority = le16_to_cpu(s->priority);
1709
1710 if (ret->log_offset) {
1711 struct io_sample_offset *so = (void *) s;
1712
1713 so->offset = le64_to_cpu(so->offset);
1714 }
1715
1716 if (ret->log_type == IO_LOG_TYPE_HIST) {
1717 s->data.plat_entry = (struct io_u_plat_entry *)(((char *)s) + sizeof(*s));
1718 s->data.plat_entry->list.next = NULL;
1719 s->data.plat_entry->list.prev = NULL;
1720 }
1721 }
1722
1723 return ret;
1724}
1725
1726static void sendfile_reply(int fd, struct cmd_sendfile_reply *rep,
1727 size_t size, uint64_t tag)
1728{
1729 rep->error = cpu_to_le32(rep->error);
1730 fio_net_send_cmd(fd, FIO_NET_CMD_SENDFILE, rep, size, &tag, NULL);
1731}
1732
1733static int fio_send_file(struct fio_client *client, struct cmd_sendfile *pdu,
1734 uint64_t tag)
1735{
1736 struct cmd_sendfile_reply *rep;
1737 struct stat sb;
1738 size_t size;
1739 int fd;
1740
1741 size = sizeof(*rep);
1742 rep = malloc(size);
1743
1744 if (stat((char *)pdu->path, &sb) < 0) {
1745fail:
1746 rep->error = errno;
1747 sendfile_reply(client->fd, rep, size, tag);
1748 free(rep);
1749 return 1;
1750 }
1751
1752 size += sb.st_size;
1753 rep = realloc(rep, size);
1754 rep->size = cpu_to_le32((uint32_t) sb.st_size);
1755
1756 fd = open((char *)pdu->path, O_RDONLY);
1757 if (fd == -1 )
1758 goto fail;
1759
1760 rep->error = read_data(fd, &rep->data, sb.st_size);
1761 sendfile_reply(client->fd, rep, size, tag);
1762 free(rep);
1763 close(fd);
1764 return 0;
1765}
1766
1767int fio_handle_client(struct fio_client *client)
1768{
1769 struct client_ops *ops = client->ops;
1770 struct fio_net_cmd *cmd;
1771
1772 dprint(FD_NET, "client: handle %s\n", client->hostname);
1773
1774 cmd = fio_net_recv_cmd(client->fd, true);
1775 if (!cmd)
1776 return 0;
1777
1778 dprint(FD_NET, "client: got cmd op %s from %s (pdu=%u)\n",
1779 fio_server_op(cmd->opcode), client->hostname, cmd->pdu_len);
1780
1781 client->last_cmd = cmd->opcode;
1782
1783 switch (cmd->opcode) {
1784 case FIO_NET_CMD_QUIT:
1785 if (ops->quit)
1786 ops->quit(client, cmd);
1787 remove_client(client);
1788 break;
1789 case FIO_NET_CMD_TEXT:
1790 convert_text(cmd);
1791 ops->text(client, cmd);
1792 break;
1793 case FIO_NET_CMD_DU: {
1794 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1795
1796 convert_dus(&du->dus);
1797 convert_agg(&du->agg);
1798
1799 ops->disk_util(client, cmd);
1800 break;
1801 }
1802 case FIO_NET_CMD_TS: {
1803 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
1804 uint64_t offset;
1805 int i;
1806
1807 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1808 if (le32_to_cpu(p->ts.nr_clat_prio[i])) {
1809 offset = le64_to_cpu(p->ts.clat_prio_offset[i]);
1810 p->ts.clat_prio[i] =
1811 (struct clat_prio_stat *)((char *)p + offset);
1812 }
1813 }
1814
1815 dprint(FD_NET, "client: ts->ss_state = %u\n", (unsigned int) le32_to_cpu(p->ts.ss_state));
1816 if (le32_to_cpu(p->ts.ss_state) & FIO_SS_DATA) {
1817 dprint(FD_NET, "client: received steadystate ring buffers\n");
1818
1819 offset = le64_to_cpu(p->ts.ss_iops_data_offset);
1820 p->ts.ss_iops_data = (uint64_t *)((char *)p + offset);
1821
1822 offset = le64_to_cpu(p->ts.ss_bw_data_offset);
1823 p->ts.ss_bw_data = (uint64_t *)((char *)p + offset);
1824 }
1825
1826 convert_ts(&p->ts, &p->ts);
1827 convert_gs(&p->rs, &p->rs);
1828
1829 ops->thread_status(client, cmd);
1830 break;
1831 }
1832 case FIO_NET_CMD_GS: {
1833 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
1834
1835 convert_gs(gs, gs);
1836
1837 ops->group_stats(client, cmd);
1838 break;
1839 }
1840 case FIO_NET_CMD_ETA: {
1841 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1842
1843 if (!remove_reply_cmd(client, cmd))
1844 break;
1845 convert_jobs_eta(je);
1846 handle_eta(client, cmd);
1847 break;
1848 }
1849 case FIO_NET_CMD_PROBE:
1850 remove_reply_cmd(client, cmd);
1851 ops->probe(client, cmd);
1852 break;
1853 case FIO_NET_CMD_SERVER_START:
1854 client->state = Client_running;
1855 if (ops->job_start)
1856 ops->job_start(client, cmd);
1857 break;
1858 case FIO_NET_CMD_START: {
1859 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1860
1861 pdu->jobs = le32_to_cpu(pdu->jobs);
1862 ops->start(client, cmd);
1863 break;
1864 }
1865 case FIO_NET_CMD_STOP: {
1866 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1867
1868 convert_stop(cmd);
1869 client->state = Client_stopped;
1870 client->error = le32_to_cpu(pdu->error);
1871 client->signal = le32_to_cpu(pdu->signal);
1872 ops->stop(client);
1873 break;
1874 }
1875 case FIO_NET_CMD_ADD_JOB: {
1876 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
1877
1878 client->thread_number = le32_to_cpu(pdu->thread_number);
1879 client->groupid = le32_to_cpu(pdu->groupid);
1880
1881 if (ops->add_job)
1882 ops->add_job(client, cmd);
1883 break;
1884 }
1885 case FIO_NET_CMD_IOLOG:
1886 fio_client_handle_iolog(client, cmd);
1887 break;
1888 case FIO_NET_CMD_UPDATE_JOB:
1889 ops->update_job(client, cmd);
1890 remove_reply_cmd(client, cmd);
1891 break;
1892 case FIO_NET_CMD_VTRIGGER: {
1893 struct all_io_list *pdu = (struct all_io_list *) cmd->payload;
1894 char buf[128];
1895 int off = 0;
1896
1897 if (aux_path) {
1898 strcpy(buf, aux_path);
1899 off = strlen(buf);
1900 }
1901
1902 __verify_save_state(pdu, server_name(client, &buf[off], sizeof(buf) - off));
1903 exec_trigger(trigger_cmd);
1904 break;
1905 }
1906 case FIO_NET_CMD_SENDFILE: {
1907 struct cmd_sendfile *pdu = (struct cmd_sendfile *) cmd->payload;
1908 fio_send_file(client, pdu, cmd->tag);
1909 break;
1910 }
1911 case FIO_NET_CMD_JOB_OPT: {
1912 handle_job_opt(client, cmd);
1913 break;
1914 }
1915 default:
1916 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
1917 break;
1918 }
1919
1920 free(cmd);
1921 return 1;
1922}
1923
1924int fio_clients_send_trigger(const char *cmd)
1925{
1926 struct flist_head *entry;
1927 struct fio_client *client;
1928 size_t slen;
1929
1930 dprint(FD_NET, "client: send vtrigger: %s\n", cmd);
1931
1932 if (!cmd)
1933 slen = 0;
1934 else
1935 slen = strlen(cmd);
1936
1937 flist_for_each(entry, &client_list) {
1938 struct cmd_vtrigger_pdu *pdu;
1939
1940 client = flist_entry(entry, struct fio_client, list);
1941
1942 pdu = malloc(sizeof(*pdu) + slen);
1943 pdu->len = cpu_to_le16((uint16_t) slen);
1944 if (slen)
1945 memcpy(pdu->cmd, cmd, slen);
1946 fio_net_send_cmd(client->fd, FIO_NET_CMD_VTRIGGER, pdu,
1947 sizeof(*pdu) + slen, NULL, NULL);
1948 free(pdu);
1949 }
1950
1951 return 0;
1952}
1953
1954static void request_client_etas(struct client_ops *ops)
1955{
1956 struct fio_client *client;
1957 struct flist_head *entry;
1958 struct client_eta *eta;
1959 int skipped = 0;
1960
1961 if (eta_print == FIO_ETA_NEVER)
1962 return;
1963
1964 dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
1965
1966 eta = calloc(1, sizeof(*eta) + __THREAD_RUNSTR_SZ(REAL_MAX_JOBS));
1967 eta->pending = nr_clients;
1968
1969 flist_for_each(entry, &client_list) {
1970 client = flist_entry(entry, struct fio_client, list);
1971
1972 if (!flist_empty(&client->eta_list)) {
1973 skipped++;
1974 continue;
1975 }
1976 if (client->state != Client_running)
1977 continue;
1978
1979 assert(!client->eta_in_flight);
1980 flist_add_tail(&client->eta_list, &eta_list);
1981 client->eta_in_flight = eta;
1982 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
1983 (uintptr_t) eta, &client->cmd_list);
1984 }
1985
1986 while (skipped--) {
1987 if (!fio_client_dec_jobs_eta(eta, ops->eta))
1988 break;
1989 }
1990
1991 dprint(FD_NET, "client: requested eta tag %p\n", eta);
1992}
1993
1994/*
1995 * A single SEND_ETA timeout isn't fatal. Attempt to recover.
1996 */
1997static int handle_cmd_timeout(struct fio_client *client,
1998 struct fio_net_cmd_reply *reply)
1999{
2000 uint16_t reply_opcode = reply->opcode;
2001
2002 flist_del(&reply->list);
2003 free(reply);
2004
2005 if (reply_opcode != FIO_NET_CMD_SEND_ETA)
2006 return 1;
2007
2008 log_info("client <%s>: timeout on SEND_ETA\n", client->hostname);
2009
2010 flist_del_init(&client->eta_list);
2011 if (client->eta_in_flight) {
2012 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
2013 client->eta_in_flight = NULL;
2014 }
2015
2016 /*
2017 * If we fail 5 in a row, give up...
2018 */
2019 if (client->eta_timeouts++ > 5)
2020 return 1;
2021
2022 return 0;
2023}
2024
2025static int client_check_cmd_timeout(struct fio_client *client,
2026 struct timespec *now)
2027{
2028 struct fio_net_cmd_reply *reply;
2029 struct flist_head *entry, *tmp;
2030 int ret = 0;
2031
2032 flist_for_each_safe(entry, tmp, &client->cmd_list) {
2033 unsigned int op;
2034
2035 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
2036
2037 if (mtime_since(&reply->ts, now) < FIO_NET_CLIENT_TIMEOUT)
2038 continue;
2039
2040 op = reply->opcode;
2041 if (!handle_cmd_timeout(client, reply))
2042 continue;
2043
2044 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
2045 fio_server_op(op));
2046 ret = 1;
2047 }
2048
2049 return flist_empty(&client->cmd_list) && ret;
2050}
2051
2052static int fio_check_clients_timed_out(void)
2053{
2054 struct fio_client *client;
2055 struct flist_head *entry, *tmp;
2056 struct timespec ts;
2057 int ret = 0;
2058
2059 fio_gettime(&ts, NULL);
2060
2061 flist_for_each_safe(entry, tmp, &client_list) {
2062 client = flist_entry(entry, struct fio_client, list);
2063
2064 if (flist_empty(&client->cmd_list))
2065 continue;
2066
2067 if (!client_check_cmd_timeout(client, &ts))
2068 continue;
2069
2070 if (client->ops->timed_out)
2071 client->ops->timed_out(client);
2072 else
2073 log_err("fio: client %s timed out\n", client->hostname);
2074
2075 if (client->last_cmd != FIO_NET_CMD_VTRIGGER)
2076 client->error = ETIMEDOUT;
2077 else
2078 log_info("fio: ignoring timeout due to vtrigger\n");
2079 remove_client(client);
2080 ret = 1;
2081 }
2082
2083 return ret;
2084}
2085
2086int fio_handle_clients(struct client_ops *ops)
2087{
2088 struct pollfd *pfds;
2089 int i, ret = 0, retval = 0;
2090
2091 fio_gettime(&eta_ts, NULL);
2092
2093 pfds = malloc(nr_clients * sizeof(struct pollfd));
2094
2095 init_thread_stat(&client_ts);
2096 init_group_run_stat(&client_gs);
2097
2098 while (!exit_backend && nr_clients) {
2099 struct flist_head *entry, *tmp;
2100 struct fio_client *client;
2101
2102 i = 0;
2103 flist_for_each_safe(entry, tmp, &client_list) {
2104 client = flist_entry(entry, struct fio_client, list);
2105
2106 if (!client->sent_job && !client->ops->stay_connected &&
2107 flist_empty(&client->cmd_list)) {
2108 remove_client(client);
2109 continue;
2110 }
2111
2112 pfds[i].fd = client->fd;
2113 pfds[i].events = POLLIN;
2114 i++;
2115 }
2116
2117 if (!nr_clients)
2118 break;
2119
2120 assert(i == nr_clients);
2121
2122 do {
2123 struct timespec ts;
2124 int timeout;
2125
2126 fio_gettime(&ts, NULL);
2127 if (eta_time_within_slack(mtime_since(&eta_ts, &ts))) {
2128 request_client_etas(ops);
2129 memcpy(&eta_ts, &ts, sizeof(ts));
2130
2131 if (fio_check_clients_timed_out())
2132 break;
2133 }
2134
2135 check_trigger_file();
2136
2137 timeout = min(100u, ops->eta_msec);
2138
2139 ret = poll(pfds, nr_clients, timeout);
2140 if (ret < 0) {
2141 if (errno == EINTR)
2142 continue;
2143 log_err("fio: poll clients: %s\n", strerror(errno));
2144 break;
2145 } else if (!ret)
2146 continue;
2147 } while (ret <= 0);
2148
2149 for (i = 0; i < nr_clients; i++) {
2150 if (!(pfds[i].revents & POLLIN))
2151 continue;
2152
2153 client = find_client_by_fd(pfds[i].fd);
2154 if (!client) {
2155 log_err("fio: unknown client fd %ld\n", (long) pfds[i].fd);
2156 continue;
2157 }
2158 if (!fio_handle_client(client)) {
2159 log_info("client: host=%s disconnected\n",
2160 client->hostname);
2161 remove_client(client);
2162 retval = 1;
2163 } else if (client->error)
2164 retval = 1;
2165 fio_put_client(client);
2166 }
2167 }
2168
2169 log_info_buf(allclients.buf, allclients.buflen);
2170 buf_output_free(&allclients);
2171
2172 fio_client_json_fini();
2173
2174 free_clat_prio_stats(&client_ts);
2175 free(pfds);
2176 return retval || error_clients;
2177}
2178
2179static void client_display_thread_status(struct jobs_eta *je)
2180{
2181 if (!(output_format & FIO_OUTPUT_JSON))
2182 display_thread_status(je);
2183}
fio - Flexible IO Tester