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client: exit if no jobs were sent and client is idle
[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
18#include "fio.h"
19#include "server.h"
20#include "flist.h"
21#include "hash.h"
22
23struct client_eta {
24 struct jobs_eta eta;
25 unsigned int pending;
26};
27
28struct fio_client {
29 struct flist_head list;
30 struct flist_head hash_list;
31 struct flist_head arg_list;
32 union {
33 struct sockaddr_in addr;
34 struct sockaddr_in6 addr6;
35 struct sockaddr_un addr_un;
36 };
37 char *hostname;
38 int port;
39 int fd;
40
41 char *name;
42
43 int state;
44
45 int skip_newline;
46 int is_sock;
47 int disk_stats_shown;
48 unsigned int jobs;
49 int error;
50 int ipv6;
51 int sent_job;
52
53 struct flist_head eta_list;
54 struct client_eta *eta_in_flight;
55
56 struct flist_head cmd_list;
57
58 uint16_t argc;
59 char **argv;
60};
61
62static struct timeval eta_tv;
63
64enum {
65 Client_created = 0,
66 Client_connected = 1,
67 Client_started = 2,
68 Client_running = 3,
69 Client_stopped = 4,
70 Client_exited = 5,
71};
72
73static FLIST_HEAD(client_list);
74static FLIST_HEAD(eta_list);
75
76static FLIST_HEAD(arg_list);
77
78static struct thread_stat client_ts;
79static struct group_run_stats client_gs;
80static int sum_stat_clients;
81static int sum_stat_nr;
82
83#define FIO_CLIENT_HASH_BITS 7
84#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
85#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
86static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
87
88static int handle_client(struct fio_client *client);
89static void dec_jobs_eta(struct client_eta *eta);
90
91static void fio_client_add_hash(struct fio_client *client)
92{
93 int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
94
95 bucket &= FIO_CLIENT_HASH_MASK;
96 flist_add(&client->hash_list, &client_hash[bucket]);
97}
98
99static void fio_client_remove_hash(struct fio_client *client)
100{
101 if (!flist_empty(&client->hash_list))
102 flist_del_init(&client->hash_list);
103}
104
105static void fio_init fio_client_hash_init(void)
106{
107 int i;
108
109 for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
110 INIT_FLIST_HEAD(&client_hash[i]);
111}
112
113static struct fio_client *find_client_by_fd(int fd)
114{
115 int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
116 struct fio_client *client;
117 struct flist_head *entry;
118
119 flist_for_each(entry, &client_hash[bucket]) {
120 client = flist_entry(entry, struct fio_client, hash_list);
121
122 if (client->fd == fd)
123 return client;
124 }
125
126 return NULL;
127}
128
129static void remove_client(struct fio_client *client)
130{
131 dprint(FD_NET, "client: removed <%s>\n", client->hostname);
132 flist_del(&client->list);
133
134 fio_client_remove_hash(client);
135
136 if (!flist_empty(&client->eta_list)) {
137 flist_del_init(&client->eta_list);
138 dec_jobs_eta(client->eta_in_flight);
139 }
140
141 free(client->hostname);
142 if (client->argv)
143 free(client->argv);
144 if (client->name)
145 free(client->name);
146
147 free(client);
148 nr_clients--;
149 sum_stat_clients--;
150}
151
152static void __fio_client_add_cmd_option(struct fio_client *client,
153 const char *opt)
154{
155 int index;
156
157 index = client->argc++;
158 client->argv = realloc(client->argv, sizeof(char *) * client->argc);
159 client->argv[index] = strdup(opt);
160 dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
161}
162
163void fio_client_add_cmd_option(void *cookie, const char *opt)
164{
165 struct fio_client *client = cookie;
166 struct flist_head *entry;
167
168 if (!client || !opt)
169 return;
170
171 __fio_client_add_cmd_option(client, opt);
172
173 /*
174 * Duplicate arguments to shared client group
175 */
176 flist_for_each(entry, &arg_list) {
177 client = flist_entry(entry, struct fio_client, arg_list);
178
179 __fio_client_add_cmd_option(client, opt);
180 }
181}
182
183int fio_client_add(const char *hostname, void **cookie)
184{
185 struct fio_client *existing = *cookie;
186 struct fio_client *client;
187
188 if (existing) {
189 /*
190 * We always add our "exec" name as the option, hence 1
191 * means empty.
192 */
193 if (existing->argc == 1)
194 flist_add_tail(&existing->arg_list, &arg_list);
195 else {
196 while (!flist_empty(&arg_list))
197 flist_del_init(arg_list.next);
198 }
199 }
200
201 client = malloc(sizeof(*client));
202 memset(client, 0, sizeof(*client));
203
204 INIT_FLIST_HEAD(&client->list);
205 INIT_FLIST_HEAD(&client->hash_list);
206 INIT_FLIST_HEAD(&client->arg_list);
207 INIT_FLIST_HEAD(&client->eta_list);
208 INIT_FLIST_HEAD(&client->cmd_list);
209
210 if (fio_server_parse_string(hostname, &client->hostname,
211 &client->is_sock, &client->port,
212 &client->addr.sin_addr,
213 &client->addr6.sin6_addr,
214 &client->ipv6))
215 return -1;
216
217 client->fd = -1;
218
219 __fio_client_add_cmd_option(client, "fio");
220
221 flist_add(&client->list, &client_list);
222 nr_clients++;
223 dprint(FD_NET, "client: added <%s>\n", client->hostname);
224 *cookie = client;
225 return 0;
226}
227
228static int fio_client_connect_ip(struct fio_client *client)
229{
230 struct sockaddr *addr;
231 fio_socklen_t socklen;
232 int fd, domain;
233
234 if (client->ipv6) {
235 client->addr6.sin6_family = AF_INET6;
236 client->addr6.sin6_port = htons(client->port);
237 domain = AF_INET6;
238 addr = (struct sockaddr *) &client->addr6;
239 socklen = sizeof(client->addr6);
240 } else {
241 client->addr.sin_family = AF_INET;
242 client->addr.sin_port = htons(client->port);
243 domain = AF_INET;
244 addr = (struct sockaddr *) &client->addr;
245 socklen = sizeof(client->addr);
246 }
247
248 fd = socket(domain, SOCK_STREAM, 0);
249 if (fd < 0) {
250 log_err("fio: socket: %s\n", strerror(errno));
251 return -1;
252 }
253
254 if (connect(fd, addr, socklen) < 0) {
255 log_err("fio: connect: %s\n", strerror(errno));
256 log_err("fio: failed to connect to %s:%u\n", client->hostname,
257 client->port);
258 close(fd);
259 return -1;
260 }
261
262 return fd;
263}
264
265static int fio_client_connect_sock(struct fio_client *client)
266{
267 struct sockaddr_un *addr = &client->addr_un;
268 fio_socklen_t len;
269 int fd;
270
271 memset(addr, 0, sizeof(*addr));
272 addr->sun_family = AF_UNIX;
273 strcpy(addr->sun_path, client->hostname);
274
275 fd = socket(AF_UNIX, SOCK_STREAM, 0);
276 if (fd < 0) {
277 log_err("fio: socket: %s\n", strerror(errno));
278 return -1;
279 }
280
281 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
282 if (connect(fd, (struct sockaddr *) addr, len) < 0) {
283 log_err("fio: connect; %s\n", strerror(errno));
284 close(fd);
285 return -1;
286 }
287
288 return fd;
289}
290
291static int fio_client_connect(struct fio_client *client)
292{
293 int fd;
294
295 dprint(FD_NET, "client: connect to host %s\n", client->hostname);
296
297 if (client->is_sock)
298 fd = fio_client_connect_sock(client);
299 else
300 fd = fio_client_connect_ip(client);
301
302 dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
303
304 if (fd < 0)
305 return 1;
306
307 client->fd = fd;
308 fio_client_add_hash(client);
309 client->state = Client_connected;
310 return 0;
311}
312
313void fio_clients_terminate(void)
314{
315 struct flist_head *entry;
316 struct fio_client *client;
317
318 dprint(FD_NET, "client: terminate clients\n");
319
320 flist_for_each(entry, &client_list) {
321 client = flist_entry(entry, struct fio_client, list);
322
323 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0, NULL);
324 }
325}
326
327static void sig_int(int sig)
328{
329 dprint(FD_NET, "client: got signal %d\n", sig);
330 fio_clients_terminate();
331}
332
333static void client_signal_handler(void)
334{
335 struct sigaction act;
336
337 memset(&act, 0, sizeof(act));
338 act.sa_handler = sig_int;
339 act.sa_flags = SA_RESTART;
340 sigaction(SIGINT, &act, NULL);
341
342 memset(&act, 0, sizeof(act));
343 act.sa_handler = sig_int;
344 act.sa_flags = SA_RESTART;
345 sigaction(SIGTERM, &act, NULL);
346}
347
348static void probe_client(struct fio_client *client)
349{
350 dprint(FD_NET, "client: send probe\n");
351
352 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0, &client->cmd_list);
353}
354
355static int send_client_cmd_line(struct fio_client *client)
356{
357 struct cmd_single_line_pdu *cslp;
358 struct cmd_line_pdu *clp;
359 unsigned long offset;
360 unsigned int *lens;
361 void *pdu;
362 size_t mem;
363 int i, ret;
364
365 dprint(FD_NET, "client: send cmdline %d\n", client->argc);
366
367 lens = malloc(client->argc * sizeof(unsigned int));
368
369 /*
370 * Find out how much mem we need
371 */
372 for (i = 0, mem = 0; i < client->argc; i++) {
373 lens[i] = strlen(client->argv[i]) + 1;
374 mem += lens[i];
375 }
376
377 /*
378 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
379 */
380 mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
381
382 pdu = malloc(mem);
383 clp = pdu;
384 offset = sizeof(*clp);
385
386 for (i = 0; i < client->argc; i++) {
387 uint16_t arg_len = lens[i];
388
389 cslp = pdu + offset;
390 strcpy((char *) cslp->text, client->argv[i]);
391 cslp->len = cpu_to_le16(arg_len);
392 offset += sizeof(*cslp) + arg_len;
393 }
394
395 free(lens);
396 clp->lines = cpu_to_le16(client->argc);
397 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, 0);
398 free(pdu);
399 return ret;
400}
401
402int fio_clients_connect(void)
403{
404 struct fio_client *client;
405 struct flist_head *entry, *tmp;
406 int ret;
407
408#ifdef WIN32
409 WSADATA wsd;
410 WSAStartup(MAKEWORD(2,2), &wsd);
411#endif
412
413 dprint(FD_NET, "client: connect all\n");
414
415 client_signal_handler();
416
417 flist_for_each_safe(entry, tmp, &client_list) {
418 client = flist_entry(entry, struct fio_client, list);
419
420 ret = fio_client_connect(client);
421 if (ret) {
422 remove_client(client);
423 continue;
424 }
425
426 probe_client(client);
427
428 if (client->argc > 1)
429 send_client_cmd_line(client);
430 }
431
432 return !nr_clients;
433}
434
435/*
436 * Send file contents to server backend. We could use sendfile(), but to remain
437 * more portable lets just read/write the darn thing.
438 */
439static int fio_client_send_ini(struct fio_client *client, const char *filename)
440{
441 struct stat sb;
442 char *p, *buf;
443 off_t len;
444 int fd, ret;
445
446 dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
447
448 fd = open(filename, O_RDONLY);
449 if (fd < 0) {
450 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
451 return 1;
452 }
453
454 if (fstat(fd, &sb) < 0) {
455 log_err("fio: job file stat: %s\n", strerror(errno));
456 close(fd);
457 return 1;
458 }
459
460 buf = malloc(sb.st_size);
461
462 len = sb.st_size;
463 p = buf;
464 do {
465 ret = read(fd, p, len);
466 if (ret > 0) {
467 len -= ret;
468 if (!len)
469 break;
470 p += ret;
471 continue;
472 } else if (!ret)
473 break;
474 else if (errno == EAGAIN || errno == EINTR)
475 continue;
476 } while (1);
477
478 if (len) {
479 log_err("fio: failed reading job file %s\n", filename);
480 close(fd);
481 free(buf);
482 return 1;
483 }
484
485 client->sent_job = 1;
486 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size, 0);
487 free(buf);
488 close(fd);
489 return ret;
490}
491
492int fio_clients_send_ini(const char *filename)
493{
494 struct fio_client *client;
495 struct flist_head *entry, *tmp;
496
497 flist_for_each_safe(entry, tmp, &client_list) {
498 client = flist_entry(entry, struct fio_client, list);
499
500 if (fio_client_send_ini(client, filename))
501 remove_client(client);
502
503 client->sent_job = 1;
504 }
505
506 return !nr_clients;
507}
508
509static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
510{
511 dst->max_val = le64_to_cpu(src->max_val);
512 dst->min_val = le64_to_cpu(src->min_val);
513 dst->samples = le64_to_cpu(src->samples);
514
515 /*
516 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
517 */
518 dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
519 dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
520}
521
522static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
523{
524 int i, j;
525
526 dst->error = le32_to_cpu(src->error);
527 dst->groupid = le32_to_cpu(src->groupid);
528 dst->pid = le32_to_cpu(src->pid);
529 dst->members = le32_to_cpu(src->members);
530
531 for (i = 0; i < 2; i++) {
532 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
533 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
534 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
535 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
536 }
537
538 dst->usr_time = le64_to_cpu(src->usr_time);
539 dst->sys_time = le64_to_cpu(src->sys_time);
540 dst->ctx = le64_to_cpu(src->ctx);
541 dst->minf = le64_to_cpu(src->minf);
542 dst->majf = le64_to_cpu(src->majf);
543 dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
544
545 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
546 fio_fp64_t *fps = &src->percentile_list[i];
547 fio_fp64_t *fpd = &dst->percentile_list[i];
548
549 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
550 }
551
552 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
553 dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
554 dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
555 dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
556 }
557
558 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
559 dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
560 dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
561 }
562
563 for (i = 0; i < 2; i++)
564 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
565 dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
566
567 for (i = 0; i < 3; i++) {
568 dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
569 dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
570 }
571
572 dst->total_submit = le64_to_cpu(src->total_submit);
573 dst->total_complete = le64_to_cpu(src->total_complete);
574
575 for (i = 0; i < 2; i++) {
576 dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
577 dst->runtime[i] = le64_to_cpu(src->runtime[i]);
578 }
579
580 dst->total_run_time = le64_to_cpu(src->total_run_time);
581 dst->continue_on_error = le16_to_cpu(src->continue_on_error);
582 dst->total_err_count = le64_to_cpu(src->total_err_count);
583 dst->first_error = le32_to_cpu(src->first_error);
584 dst->kb_base = le32_to_cpu(src->kb_base);
585}
586
587static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
588{
589 int i;
590
591 for (i = 0; i < 2; i++) {
592 dst->max_run[i] = le64_to_cpu(src->max_run[i]);
593 dst->min_run[i] = le64_to_cpu(src->min_run[i]);
594 dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
595 dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
596 dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
597 dst->agg[i] = le64_to_cpu(src->agg[i]);
598 }
599
600 dst->kb_base = le32_to_cpu(src->kb_base);
601 dst->groupid = le32_to_cpu(src->groupid);
602}
603
604static void handle_ts(struct fio_net_cmd *cmd)
605{
606 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
607
608 convert_ts(&p->ts, &p->ts);
609 convert_gs(&p->rs, &p->rs);
610
611 show_thread_status(&p->ts, &p->rs);
612
613 if (sum_stat_clients == 1)
614 return;
615
616 sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
617 sum_group_stats(&client_gs, &p->rs);
618
619 client_ts.members++;
620 client_ts.groupid = p->ts.groupid;
621
622 if (++sum_stat_nr == sum_stat_clients) {
623 strcpy(client_ts.name, "All clients");
624 show_thread_status(&client_ts, &client_gs);
625 }
626}
627
628static void handle_gs(struct fio_net_cmd *cmd)
629{
630 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
631
632 convert_gs(gs, gs);
633 show_group_stats(gs);
634}
635
636static void convert_agg(struct disk_util_agg *agg)
637{
638 int i;
639
640 for (i = 0; i < 2; i++) {
641 agg->ios[i] = le32_to_cpu(agg->ios[i]);
642 agg->merges[i] = le32_to_cpu(agg->merges[i]);
643 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
644 agg->ticks[i] = le32_to_cpu(agg->ticks[i]);
645 }
646
647 agg->io_ticks = le32_to_cpu(agg->io_ticks);
648 agg->time_in_queue = le32_to_cpu(agg->time_in_queue);
649 agg->slavecount = le32_to_cpu(agg->slavecount);
650 agg->max_util.u.f = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
651}
652
653static void convert_dus(struct disk_util_stat *dus)
654{
655 int i;
656
657 for (i = 0; i < 2; i++) {
658 dus->ios[i] = le32_to_cpu(dus->ios[i]);
659 dus->merges[i] = le32_to_cpu(dus->merges[i]);
660 dus->sectors[i] = le64_to_cpu(dus->sectors[i]);
661 dus->ticks[i] = le32_to_cpu(dus->ticks[i]);
662 }
663
664 dus->io_ticks = le32_to_cpu(dus->io_ticks);
665 dus->time_in_queue = le32_to_cpu(dus->time_in_queue);
666 dus->msec = le64_to_cpu(dus->msec);
667}
668
669static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
670{
671 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
672
673 convert_dus(&du->dus);
674 convert_agg(&du->agg);
675
676 if (!client->disk_stats_shown) {
677 client->disk_stats_shown = 1;
678 log_info("\nDisk stats (read/write):\n");
679 }
680
681 print_disk_util(&du->dus, &du->agg, terse_output);
682}
683
684static void convert_jobs_eta(struct jobs_eta *je)
685{
686 int i;
687
688 je->nr_running = le32_to_cpu(je->nr_running);
689 je->nr_ramp = le32_to_cpu(je->nr_ramp);
690 je->nr_pending = le32_to_cpu(je->nr_pending);
691 je->files_open = le32_to_cpu(je->files_open);
692 je->m_rate = le32_to_cpu(je->m_rate);
693 je->t_rate = le32_to_cpu(je->t_rate);
694 je->m_iops = le32_to_cpu(je->m_iops);
695 je->t_iops = le32_to_cpu(je->t_iops);
696
697 for (i = 0; i < 2; i++) {
698 je->rate[i] = le32_to_cpu(je->rate[i]);
699 je->iops[i] = le32_to_cpu(je->iops[i]);
700 }
701
702 je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
703 je->eta_sec = le64_to_cpu(je->eta_sec);
704}
705
706static void sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
707{
708 int i;
709
710 dst->nr_running += je->nr_running;
711 dst->nr_ramp += je->nr_ramp;
712 dst->nr_pending += je->nr_pending;
713 dst->files_open += je->files_open;
714 dst->m_rate += je->m_rate;
715 dst->t_rate += je->t_rate;
716 dst->m_iops += je->m_iops;
717 dst->t_iops += je->t_iops;
718
719 for (i = 0; i < 2; i++) {
720 dst->rate[i] += je->rate[i];
721 dst->iops[i] += je->iops[i];
722 }
723
724 dst->elapsed_sec += je->elapsed_sec;
725
726 if (je->eta_sec > dst->eta_sec)
727 dst->eta_sec = je->eta_sec;
728}
729
730static void dec_jobs_eta(struct client_eta *eta)
731{
732 if (!--eta->pending) {
733 display_thread_status(&eta->eta);
734 free(eta);
735 }
736}
737
738static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
739{
740 struct fio_net_int_cmd *icmd = NULL;
741 struct flist_head *entry;
742
743 flist_for_each(entry, &client->cmd_list) {
744 icmd = flist_entry(entry, struct fio_net_int_cmd, list);
745
746 if (cmd->tag == (uintptr_t) icmd)
747 break;
748
749 icmd = NULL;
750 }
751
752 if (!icmd) {
753 log_err("fio: client: unable to find matching tag\n");
754 return;
755 }
756
757 flist_del(&icmd->list);
758 cmd->tag = icmd->saved_tag;
759 free(icmd);
760}
761
762static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
763{
764 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
765 struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
766
767 dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
768
769 assert(client->eta_in_flight == eta);
770
771 client->eta_in_flight = NULL;
772 flist_del_init(&client->eta_list);
773
774 convert_jobs_eta(je);
775 sum_jobs_eta(&eta->eta, je);
776 dec_jobs_eta(eta);
777}
778
779static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
780{
781 struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
782 const char *os, *arch;
783 char bit[16];
784
785 os = fio_get_os_string(probe->os);
786 if (!os)
787 os = "unknown";
788
789 arch = fio_get_arch_string(probe->arch);
790 if (!arch)
791 os = "unknown";
792
793 sprintf(bit, "%d-bit", probe->bpp * 8);
794
795 log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%u.%u.%u\n",
796 probe->hostname, probe->bigendian, bit, os, arch,
797 probe->fio_major, probe->fio_minor, probe->fio_patch);
798
799 if (!client->name)
800 client->name = strdup((char *) probe->hostname);
801}
802
803static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
804{
805 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
806
807 client->state = Client_started;
808 client->jobs = le32_to_cpu(pdu->jobs);
809}
810
811static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
812{
813 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
814
815 client->state = Client_stopped;
816 client->error = le32_to_cpu(pdu->error);
817
818 if (client->error)
819 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
820}
821
822static int handle_client(struct fio_client *client)
823{
824 struct fio_net_cmd *cmd;
825
826 dprint(FD_NET, "client: handle %s\n", client->hostname);
827
828 cmd = fio_net_recv_cmd(client->fd);
829 if (!cmd)
830 return 0;
831
832 dprint(FD_NET, "client: got cmd op %s from %s\n",
833 fio_server_op(cmd->opcode), client->hostname);
834
835 switch (cmd->opcode) {
836 case FIO_NET_CMD_QUIT:
837 remove_client(client);
838 free(cmd);
839 break;
840 case FIO_NET_CMD_TEXT: {
841 const char *buf = (const char *) cmd->payload;
842 const char *name;
843 int fio_unused ret;
844
845 name = client->name ? client->name : client->hostname;
846
847 if (!client->skip_newline)
848 fprintf(f_out, "<%s> ", name);
849 ret = fwrite(buf, cmd->pdu_len, 1, f_out);
850 fflush(f_out);
851 client->skip_newline = strchr(buf, '\n') == NULL;
852 free(cmd);
853 break;
854 }
855 case FIO_NET_CMD_DU:
856 handle_du(client, cmd);
857 free(cmd);
858 break;
859 case FIO_NET_CMD_TS:
860 handle_ts(cmd);
861 free(cmd);
862 break;
863 case FIO_NET_CMD_GS:
864 handle_gs(cmd);
865 free(cmd);
866 break;
867 case FIO_NET_CMD_ETA:
868 remove_reply_cmd(client, cmd);
869 handle_eta(client, cmd);
870 free(cmd);
871 break;
872 case FIO_NET_CMD_PROBE:
873 remove_reply_cmd(client, cmd);
874 handle_probe(client, cmd);
875 free(cmd);
876 break;
877 case FIO_NET_CMD_RUN:
878 client->state = Client_running;
879 free(cmd);
880 break;
881 case FIO_NET_CMD_START:
882 handle_start(client, cmd);
883 free(cmd);
884 break;
885 case FIO_NET_CMD_STOP:
886 handle_stop(client, cmd);
887 free(cmd);
888 break;
889 default:
890 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
891 free(cmd);
892 break;
893 }
894
895 return 1;
896}
897
898static void request_client_etas(void)
899{
900 struct fio_client *client;
901 struct flist_head *entry;
902 struct client_eta *eta;
903 int skipped = 0;
904
905 dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
906
907 eta = malloc(sizeof(*eta));
908 memset(&eta->eta, 0, sizeof(eta->eta));
909 eta->pending = nr_clients;
910
911 flist_for_each(entry, &client_list) {
912 client = flist_entry(entry, struct fio_client, list);
913
914 if (!flist_empty(&client->eta_list)) {
915 skipped++;
916 continue;
917 }
918 if (client->state != Client_running)
919 continue;
920
921 assert(!client->eta_in_flight);
922 flist_add_tail(&client->eta_list, &eta_list);
923 client->eta_in_flight = eta;
924 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
925 (uintptr_t) eta, &client->cmd_list);
926 }
927
928 while (skipped--)
929 dec_jobs_eta(eta);
930
931 dprint(FD_NET, "client: requested eta tag %p\n", eta);
932}
933
934static int client_check_cmd_timeout(struct fio_client *client,
935 struct timeval *now)
936{
937 struct fio_net_int_cmd *cmd;
938 struct flist_head *entry, *tmp;
939 int ret = 0;
940
941 flist_for_each_safe(entry, tmp, &client->cmd_list) {
942 cmd = flist_entry(entry, struct fio_net_int_cmd, list);
943
944 if (mtime_since(&cmd->tv, now) < FIO_NET_CLIENT_TIMEOUT)
945 continue;
946
947 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
948 fio_server_op(cmd->cmd.opcode));
949 flist_del(&cmd->list);
950 free(cmd);
951 ret = 1;
952 }
953
954 return flist_empty(&client->cmd_list) && ret;
955}
956
957static int fio_client_timed_out(void)
958{
959 struct fio_client *client;
960 struct flist_head *entry, *tmp;
961 struct timeval tv;
962 int ret = 0;
963
964 gettimeofday(&tv, NULL);
965
966 flist_for_each_safe(entry, tmp, &client_list) {
967 client = flist_entry(entry, struct fio_client, list);
968
969 if (flist_empty(&client->cmd_list))
970 continue;
971
972 if (!client_check_cmd_timeout(client, &tv))
973 continue;
974
975 log_err("fio: client %s timed out\n", client->hostname);
976 remove_client(client);
977 ret = 1;
978 }
979
980 return ret;
981}
982
983int fio_handle_clients(void)
984{
985 struct pollfd *pfds;
986 int i, ret = 0, retval = 0;
987
988 gettimeofday(&eta_tv, NULL);
989
990 pfds = malloc(nr_clients * sizeof(struct pollfd));
991
992 sum_stat_clients = nr_clients;
993 init_thread_stat(&client_ts);
994 init_group_run_stat(&client_gs);
995
996 while (!exit_backend && nr_clients) {
997 struct flist_head *entry, *tmp;
998 struct fio_client *client;
999
1000 i = 0;
1001 flist_for_each_safe(entry, tmp, &client_list) {
1002 client = flist_entry(entry, struct fio_client, list);
1003
1004 if (!client->sent_job &&
1005 flist_empty(&client->cmd_list)) {
1006 remove_client(client);
1007 continue;
1008 }
1009
1010 pfds[i].fd = client->fd;
1011 pfds[i].events = POLLIN;
1012 i++;
1013 }
1014
1015 if (!nr_clients)
1016 break;
1017
1018 assert(i == nr_clients);
1019
1020 do {
1021 struct timeval tv;
1022
1023 gettimeofday(&tv, NULL);
1024 if (mtime_since(&eta_tv, &tv) >= 900) {
1025 request_client_etas();
1026 memcpy(&eta_tv, &tv, sizeof(tv));
1027
1028 if (fio_client_timed_out())
1029 break;
1030 }
1031
1032 ret = poll(pfds, nr_clients, 100);
1033 if (ret < 0) {
1034 if (errno == EINTR)
1035 continue;
1036 log_err("fio: poll clients: %s\n", strerror(errno));
1037 break;
1038 } else if (!ret)
1039 continue;
1040 } while (ret <= 0);
1041
1042 for (i = 0; i < nr_clients; i++) {
1043 if (!(pfds[i].revents & POLLIN))
1044 continue;
1045
1046 client = find_client_by_fd(pfds[i].fd);
1047 if (!client) {
1048 log_err("fio: unknown client fd %d\n", pfds[i].fd);
1049 continue;
1050 }
1051 if (!handle_client(client)) {
1052 log_info("client: host=%s disconnected\n",
1053 client->hostname);
1054 remove_client(client);
1055 retval = 1;
1056 } else if (client->error)
1057 retval = 1;
1058 }
1059 }
1060
1061 free(pfds);
1062 return retval;
1063}
fio - Flexible IO Tester