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Revert "blktrace: use for_each_file() instead of open coding the loop"
[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 unsigned int refs;
41
42 char *name;
43
44 int state;
45
46 int skip_newline;
47 int is_sock;
48 int disk_stats_shown;
49 unsigned int jobs;
50 int error;
51 int ipv6;
52 int sent_job;
53
54 struct flist_head eta_list;
55 struct client_eta *eta_in_flight;
56
57 struct flist_head cmd_list;
58
59 uint16_t argc;
60 char **argv;
61};
62
63static struct timeval eta_tv;
64
65enum {
66 Client_created = 0,
67 Client_connected = 1,
68 Client_started = 2,
69 Client_running = 3,
70 Client_stopped = 4,
71 Client_exited = 5,
72};
73
74static FLIST_HEAD(client_list);
75static FLIST_HEAD(eta_list);
76
77static FLIST_HEAD(arg_list);
78
79static struct thread_stat client_ts;
80static struct group_run_stats client_gs;
81static int sum_stat_clients;
82static int sum_stat_nr;
83
84#define FIO_CLIENT_HASH_BITS 7
85#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
86#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
87static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
88
89static int handle_client(struct fio_client *client);
90static void dec_jobs_eta(struct client_eta *eta);
91
92static void fio_client_add_hash(struct fio_client *client)
93{
94 int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
95
96 bucket &= FIO_CLIENT_HASH_MASK;
97 flist_add(&client->hash_list, &client_hash[bucket]);
98}
99
100static void fio_client_remove_hash(struct fio_client *client)
101{
102 if (!flist_empty(&client->hash_list))
103 flist_del_init(&client->hash_list);
104}
105
106static void fio_init fio_client_hash_init(void)
107{
108 int i;
109
110 for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
111 INIT_FLIST_HEAD(&client_hash[i]);
112}
113
114static struct fio_client *find_client_by_fd(int fd)
115{
116 int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
117 struct fio_client *client;
118 struct flist_head *entry;
119
120 flist_for_each(entry, &client_hash[bucket]) {
121 client = flist_entry(entry, struct fio_client, hash_list);
122
123 if (client->fd == fd) {
124 client->refs++;
125 return client;
126 }
127 }
128
129 return NULL;
130}
131
132static void remove_client(struct fio_client *client)
133{
134 assert(client->refs);
135
136 if (--client->refs)
137 return;
138
139 dprint(FD_NET, "client: removed <%s>\n", client->hostname);
140 flist_del(&client->list);
141
142 fio_client_remove_hash(client);
143
144 if (!flist_empty(&client->eta_list)) {
145 flist_del_init(&client->eta_list);
146 dec_jobs_eta(client->eta_in_flight);
147 }
148
149 free(client->hostname);
150 if (client->argv)
151 free(client->argv);
152 if (client->name)
153 free(client->name);
154
155 free(client);
156 nr_clients--;
157 sum_stat_clients--;
158}
159
160static void put_client(struct fio_client *client)
161{
162 remove_client(client);
163}
164
165static void __fio_client_add_cmd_option(struct fio_client *client,
166 const char *opt)
167{
168 int index;
169
170 index = client->argc++;
171 client->argv = realloc(client->argv, sizeof(char *) * client->argc);
172 client->argv[index] = strdup(opt);
173 dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
174}
175
176void fio_client_add_cmd_option(void *cookie, const char *opt)
177{
178 struct fio_client *client = cookie;
179 struct flist_head *entry;
180
181 if (!client || !opt)
182 return;
183
184 __fio_client_add_cmd_option(client, opt);
185
186 /*
187 * Duplicate arguments to shared client group
188 */
189 flist_for_each(entry, &arg_list) {
190 client = flist_entry(entry, struct fio_client, arg_list);
191
192 __fio_client_add_cmd_option(client, opt);
193 }
194}
195
196int fio_client_add(const char *hostname, void **cookie)
197{
198 struct fio_client *existing = *cookie;
199 struct fio_client *client;
200
201 if (existing) {
202 /*
203 * We always add our "exec" name as the option, hence 1
204 * means empty.
205 */
206 if (existing->argc == 1)
207 flist_add_tail(&existing->arg_list, &arg_list);
208 else {
209 while (!flist_empty(&arg_list))
210 flist_del_init(arg_list.next);
211 }
212 }
213
214 client = malloc(sizeof(*client));
215 memset(client, 0, sizeof(*client));
216
217 INIT_FLIST_HEAD(&client->list);
218 INIT_FLIST_HEAD(&client->hash_list);
219 INIT_FLIST_HEAD(&client->arg_list);
220 INIT_FLIST_HEAD(&client->eta_list);
221 INIT_FLIST_HEAD(&client->cmd_list);
222
223 if (fio_server_parse_string(hostname, &client->hostname,
224 &client->is_sock, &client->port,
225 &client->addr.sin_addr,
226 &client->addr6.sin6_addr,
227 &client->ipv6))
228 return -1;
229
230 client->fd = -1;
231 client->refs = 1;
232
233 __fio_client_add_cmd_option(client, "fio");
234
235 flist_add(&client->list, &client_list);
236 nr_clients++;
237 dprint(FD_NET, "client: added <%s>\n", client->hostname);
238 *cookie = client;
239 return 0;
240}
241
242static int fio_client_connect_ip(struct fio_client *client)
243{
244 struct sockaddr *addr;
245 fio_socklen_t socklen;
246 int fd, domain;
247
248 if (client->ipv6) {
249 client->addr6.sin6_family = AF_INET6;
250 client->addr6.sin6_port = htons(client->port);
251 domain = AF_INET6;
252 addr = (struct sockaddr *) &client->addr6;
253 socklen = sizeof(client->addr6);
254 } else {
255 client->addr.sin_family = AF_INET;
256 client->addr.sin_port = htons(client->port);
257 domain = AF_INET;
258 addr = (struct sockaddr *) &client->addr;
259 socklen = sizeof(client->addr);
260 }
261
262 fd = socket(domain, SOCK_STREAM, 0);
263 if (fd < 0) {
264 log_err("fio: socket: %s\n", strerror(errno));
265 return -1;
266 }
267
268 if (connect(fd, addr, socklen) < 0) {
269 log_err("fio: connect: %s\n", strerror(errno));
270 log_err("fio: failed to connect to %s:%u\n", client->hostname,
271 client->port);
272 close(fd);
273 return -1;
274 }
275
276 return fd;
277}
278
279static int fio_client_connect_sock(struct fio_client *client)
280{
281 struct sockaddr_un *addr = &client->addr_un;
282 fio_socklen_t len;
283 int fd;
284
285 memset(addr, 0, sizeof(*addr));
286 addr->sun_family = AF_UNIX;
287 strcpy(addr->sun_path, client->hostname);
288
289 fd = socket(AF_UNIX, SOCK_STREAM, 0);
290 if (fd < 0) {
291 log_err("fio: socket: %s\n", strerror(errno));
292 return -1;
293 }
294
295 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
296 if (connect(fd, (struct sockaddr *) addr, len) < 0) {
297 log_err("fio: connect; %s\n", strerror(errno));
298 close(fd);
299 return -1;
300 }
301
302 return fd;
303}
304
305static int fio_client_connect(struct fio_client *client)
306{
307 int fd;
308
309 dprint(FD_NET, "client: connect to host %s\n", client->hostname);
310
311 if (client->is_sock)
312 fd = fio_client_connect_sock(client);
313 else
314 fd = fio_client_connect_ip(client);
315
316 dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
317
318 if (fd < 0)
319 return 1;
320
321 client->fd = fd;
322 fio_client_add_hash(client);
323 client->state = Client_connected;
324 return 0;
325}
326
327void fio_clients_terminate(void)
328{
329 struct flist_head *entry;
330 struct fio_client *client;
331
332 dprint(FD_NET, "client: terminate clients\n");
333
334 flist_for_each(entry, &client_list) {
335 client = flist_entry(entry, struct fio_client, list);
336
337 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0, NULL);
338 }
339}
340
341static void sig_int(int sig)
342{
343 dprint(FD_NET, "client: got signal %d\n", sig);
344 fio_clients_terminate();
345}
346
347static void sig_show_status(int sig)
348{
349 show_running_run_stats();
350}
351
352static void client_signal_handler(void)
353{
354 struct sigaction act;
355
356 memset(&act, 0, sizeof(act));
357 act.sa_handler = sig_int;
358 act.sa_flags = SA_RESTART;
359 sigaction(SIGINT, &act, NULL);
360
361 memset(&act, 0, sizeof(act));
362 act.sa_handler = sig_int;
363 act.sa_flags = SA_RESTART;
364 sigaction(SIGTERM, &act, NULL);
365
366 memset(&act, 0, sizeof(act));
367 act.sa_handler = sig_show_status;
368 act.sa_flags = SA_RESTART;
369 sigaction(SIGUSR1, &act, NULL);
370}
371
372static void probe_client(struct fio_client *client)
373{
374 dprint(FD_NET, "client: send probe\n");
375
376 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0, &client->cmd_list);
377}
378
379static int send_client_cmd_line(struct fio_client *client)
380{
381 struct cmd_single_line_pdu *cslp;
382 struct cmd_line_pdu *clp;
383 unsigned long offset;
384 unsigned int *lens;
385 void *pdu;
386 size_t mem;
387 int i, ret;
388
389 dprint(FD_NET, "client: send cmdline %d\n", client->argc);
390
391 lens = malloc(client->argc * sizeof(unsigned int));
392
393 /*
394 * Find out how much mem we need
395 */
396 for (i = 0, mem = 0; i < client->argc; i++) {
397 lens[i] = strlen(client->argv[i]) + 1;
398 mem += lens[i];
399 }
400
401 /*
402 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
403 */
404 mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
405
406 pdu = malloc(mem);
407 clp = pdu;
408 offset = sizeof(*clp);
409
410 for (i = 0; i < client->argc; i++) {
411 uint16_t arg_len = lens[i];
412
413 cslp = pdu + offset;
414 strcpy((char *) cslp->text, client->argv[i]);
415 cslp->len = cpu_to_le16(arg_len);
416 offset += sizeof(*cslp) + arg_len;
417 }
418
419 free(lens);
420 clp->lines = cpu_to_le16(client->argc);
421 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, 0);
422 free(pdu);
423 return ret;
424}
425
426int fio_clients_connect(void)
427{
428 struct fio_client *client;
429 struct flist_head *entry, *tmp;
430 int ret;
431
432#ifdef WIN32
433 WSADATA wsd;
434 WSAStartup(MAKEWORD(2,2), &wsd);
435#endif
436
437 dprint(FD_NET, "client: connect all\n");
438
439 client_signal_handler();
440
441 flist_for_each_safe(entry, tmp, &client_list) {
442 client = flist_entry(entry, struct fio_client, list);
443
444 ret = fio_client_connect(client);
445 if (ret) {
446 remove_client(client);
447 continue;
448 }
449
450 probe_client(client);
451
452 if (client->argc > 1)
453 send_client_cmd_line(client);
454 }
455
456 return !nr_clients;
457}
458
459/*
460 * Send file contents to server backend. We could use sendfile(), but to remain
461 * more portable lets just read/write the darn thing.
462 */
463static int fio_client_send_ini(struct fio_client *client, const char *filename)
464{
465 struct stat sb;
466 char *p, *buf;
467 off_t len;
468 int fd, ret;
469
470 dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
471
472 fd = open(filename, O_RDONLY);
473 if (fd < 0) {
474 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
475 return 1;
476 }
477
478 if (fstat(fd, &sb) < 0) {
479 log_err("fio: job file stat: %s\n", strerror(errno));
480 close(fd);
481 return 1;
482 }
483
484 buf = malloc(sb.st_size);
485
486 len = sb.st_size;
487 p = buf;
488 do {
489 ret = read(fd, p, len);
490 if (ret > 0) {
491 len -= ret;
492 if (!len)
493 break;
494 p += ret;
495 continue;
496 } else if (!ret)
497 break;
498 else if (errno == EAGAIN || errno == EINTR)
499 continue;
500 } while (1);
501
502 if (len) {
503 log_err("fio: failed reading job file %s\n", filename);
504 close(fd);
505 free(buf);
506 return 1;
507 }
508
509 client->sent_job = 1;
510 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size, 0);
511 free(buf);
512 close(fd);
513 return ret;
514}
515
516int fio_clients_send_ini(const char *filename)
517{
518 struct fio_client *client;
519 struct flist_head *entry, *tmp;
520
521 flist_for_each_safe(entry, tmp, &client_list) {
522 client = flist_entry(entry, struct fio_client, list);
523
524 if (fio_client_send_ini(client, filename))
525 remove_client(client);
526
527 client->sent_job = 1;
528 }
529
530 return !nr_clients;
531}
532
533static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
534{
535 dst->max_val = le64_to_cpu(src->max_val);
536 dst->min_val = le64_to_cpu(src->min_val);
537 dst->samples = le64_to_cpu(src->samples);
538
539 /*
540 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
541 */
542 dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
543 dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
544}
545
546static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
547{
548 int i, j;
549
550 dst->error = le32_to_cpu(src->error);
551 dst->groupid = le32_to_cpu(src->groupid);
552 dst->pid = le32_to_cpu(src->pid);
553 dst->members = le32_to_cpu(src->members);
554
555 for (i = 0; i < 2; i++) {
556 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
557 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
558 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
559 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
560 }
561
562 dst->usr_time = le64_to_cpu(src->usr_time);
563 dst->sys_time = le64_to_cpu(src->sys_time);
564 dst->ctx = le64_to_cpu(src->ctx);
565 dst->minf = le64_to_cpu(src->minf);
566 dst->majf = le64_to_cpu(src->majf);
567 dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
568
569 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
570 fio_fp64_t *fps = &src->percentile_list[i];
571 fio_fp64_t *fpd = &dst->percentile_list[i];
572
573 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
574 }
575
576 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
577 dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
578 dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
579 dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
580 }
581
582 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
583 dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
584 dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
585 }
586
587 for (i = 0; i < 2; i++)
588 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
589 dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
590
591 for (i = 0; i < 3; i++) {
592 dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
593 dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
594 }
595
596 dst->total_submit = le64_to_cpu(src->total_submit);
597 dst->total_complete = le64_to_cpu(src->total_complete);
598
599 for (i = 0; i < 2; i++) {
600 dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
601 dst->runtime[i] = le64_to_cpu(src->runtime[i]);
602 }
603
604 dst->total_run_time = le64_to_cpu(src->total_run_time);
605 dst->continue_on_error = le16_to_cpu(src->continue_on_error);
606 dst->total_err_count = le64_to_cpu(src->total_err_count);
607 dst->first_error = le32_to_cpu(src->first_error);
608 dst->kb_base = le32_to_cpu(src->kb_base);
609}
610
611static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
612{
613 int i;
614
615 for (i = 0; i < 2; i++) {
616 dst->max_run[i] = le64_to_cpu(src->max_run[i]);
617 dst->min_run[i] = le64_to_cpu(src->min_run[i]);
618 dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
619 dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
620 dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
621 dst->agg[i] = le64_to_cpu(src->agg[i]);
622 }
623
624 dst->kb_base = le32_to_cpu(src->kb_base);
625 dst->groupid = le32_to_cpu(src->groupid);
626}
627
628static void handle_ts(struct fio_net_cmd *cmd)
629{
630 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
631
632 convert_ts(&p->ts, &p->ts);
633 convert_gs(&p->rs, &p->rs);
634
635 show_thread_status(&p->ts, &p->rs);
636
637 if (sum_stat_clients == 1)
638 return;
639
640 sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
641 sum_group_stats(&client_gs, &p->rs);
642
643 client_ts.members++;
644 client_ts.groupid = p->ts.groupid;
645
646 if (++sum_stat_nr == sum_stat_clients) {
647 strcpy(client_ts.name, "All clients");
648 show_thread_status(&client_ts, &client_gs);
649 }
650}
651
652static void handle_gs(struct fio_net_cmd *cmd)
653{
654 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
655
656 convert_gs(gs, gs);
657 show_group_stats(gs);
658}
659
660static void convert_agg(struct disk_util_agg *agg)
661{
662 int i;
663
664 for (i = 0; i < 2; i++) {
665 agg->ios[i] = le32_to_cpu(agg->ios[i]);
666 agg->merges[i] = le32_to_cpu(agg->merges[i]);
667 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
668 agg->ticks[i] = le32_to_cpu(agg->ticks[i]);
669 }
670
671 agg->io_ticks = le32_to_cpu(agg->io_ticks);
672 agg->time_in_queue = le32_to_cpu(agg->time_in_queue);
673 agg->slavecount = le32_to_cpu(agg->slavecount);
674 agg->max_util.u.f = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
675}
676
677static void convert_dus(struct disk_util_stat *dus)
678{
679 int i;
680
681 for (i = 0; i < 2; i++) {
682 dus->ios[i] = le32_to_cpu(dus->ios[i]);
683 dus->merges[i] = le32_to_cpu(dus->merges[i]);
684 dus->sectors[i] = le64_to_cpu(dus->sectors[i]);
685 dus->ticks[i] = le32_to_cpu(dus->ticks[i]);
686 }
687
688 dus->io_ticks = le32_to_cpu(dus->io_ticks);
689 dus->time_in_queue = le32_to_cpu(dus->time_in_queue);
690 dus->msec = le64_to_cpu(dus->msec);
691}
692
693static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
694{
695 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
696
697 convert_dus(&du->dus);
698 convert_agg(&du->agg);
699
700 if (!client->disk_stats_shown) {
701 client->disk_stats_shown = 1;
702 log_info("\nDisk stats (read/write):\n");
703 }
704
705 print_disk_util(&du->dus, &du->agg, terse_output);
706}
707
708static void convert_jobs_eta(struct jobs_eta *je)
709{
710 int i;
711
712 je->nr_running = le32_to_cpu(je->nr_running);
713 je->nr_ramp = le32_to_cpu(je->nr_ramp);
714 je->nr_pending = le32_to_cpu(je->nr_pending);
715 je->files_open = le32_to_cpu(je->files_open);
716 je->m_rate = le32_to_cpu(je->m_rate);
717 je->t_rate = le32_to_cpu(je->t_rate);
718 je->m_iops = le32_to_cpu(je->m_iops);
719 je->t_iops = le32_to_cpu(je->t_iops);
720
721 for (i = 0; i < 2; i++) {
722 je->rate[i] = le32_to_cpu(je->rate[i]);
723 je->iops[i] = le32_to_cpu(je->iops[i]);
724 }
725
726 je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
727 je->eta_sec = le64_to_cpu(je->eta_sec);
728 je->is_pow2 = le32_to_cpu(je->is_pow2);
729}
730
731static void sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
732{
733 int i;
734
735 dst->nr_running += je->nr_running;
736 dst->nr_ramp += je->nr_ramp;
737 dst->nr_pending += je->nr_pending;
738 dst->files_open += je->files_open;
739 dst->m_rate += je->m_rate;
740 dst->t_rate += je->t_rate;
741 dst->m_iops += je->m_iops;
742 dst->t_iops += je->t_iops;
743
744 for (i = 0; i < 2; i++) {
745 dst->rate[i] += je->rate[i];
746 dst->iops[i] += je->iops[i];
747 }
748
749 dst->elapsed_sec += je->elapsed_sec;
750
751 if (je->eta_sec > dst->eta_sec)
752 dst->eta_sec = je->eta_sec;
753}
754
755static void dec_jobs_eta(struct client_eta *eta)
756{
757 if (!--eta->pending) {
758 display_thread_status(&eta->eta);
759 free(eta);
760 }
761}
762
763static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
764{
765 struct fio_net_int_cmd *icmd = NULL;
766 struct flist_head *entry;
767
768 flist_for_each(entry, &client->cmd_list) {
769 icmd = flist_entry(entry, struct fio_net_int_cmd, list);
770
771 if (cmd->tag == (uintptr_t) icmd)
772 break;
773
774 icmd = NULL;
775 }
776
777 if (!icmd) {
778 log_err("fio: client: unable to find matching tag\n");
779 return;
780 }
781
782 flist_del(&icmd->list);
783 cmd->tag = icmd->saved_tag;
784 free(icmd);
785}
786
787static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
788{
789 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
790 struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
791
792 dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
793
794 assert(client->eta_in_flight == eta);
795
796 client->eta_in_flight = NULL;
797 flist_del_init(&client->eta_list);
798
799 convert_jobs_eta(je);
800 sum_jobs_eta(&eta->eta, je);
801 dec_jobs_eta(eta);
802}
803
804static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
805{
806 struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
807 const char *os, *arch;
808 char bit[16];
809
810 os = fio_get_os_string(probe->os);
811 if (!os)
812 os = "unknown";
813
814 arch = fio_get_arch_string(probe->arch);
815 if (!arch)
816 os = "unknown";
817
818 sprintf(bit, "%d-bit", probe->bpp * 8);
819
820 log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s\n",
821 probe->hostname, probe->bigendian, bit, os, arch,
822 probe->fio_version);
823
824 if (!client->name)
825 client->name = strdup((char *) probe->hostname);
826}
827
828static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
829{
830 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
831
832 client->state = Client_started;
833 client->jobs = le32_to_cpu(pdu->jobs);
834}
835
836static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
837{
838 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
839
840 client->state = Client_stopped;
841 client->error = le32_to_cpu(pdu->error);
842
843 if (client->error)
844 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
845}
846
847static int handle_client(struct fio_client *client)
848{
849 struct fio_net_cmd *cmd;
850
851 dprint(FD_NET, "client: handle %s\n", client->hostname);
852
853 cmd = fio_net_recv_cmd(client->fd);
854 if (!cmd)
855 return 0;
856
857 dprint(FD_NET, "client: got cmd op %s from %s\n",
858 fio_server_op(cmd->opcode), client->hostname);
859
860 switch (cmd->opcode) {
861 case FIO_NET_CMD_QUIT:
862 remove_client(client);
863 free(cmd);
864 break;
865 case FIO_NET_CMD_TEXT: {
866 const char *buf = (const char *) cmd->payload;
867 const char *name;
868 int fio_unused ret;
869
870 name = client->name ? client->name : client->hostname;
871
872 if (!client->skip_newline)
873 fprintf(f_out, "<%s> ", name);
874 ret = fwrite(buf, cmd->pdu_len, 1, f_out);
875 fflush(f_out);
876 client->skip_newline = strchr(buf, '\n') == NULL;
877 free(cmd);
878 break;
879 }
880 case FIO_NET_CMD_DU:
881 handle_du(client, cmd);
882 free(cmd);
883 break;
884 case FIO_NET_CMD_TS:
885 handle_ts(cmd);
886 free(cmd);
887 break;
888 case FIO_NET_CMD_GS:
889 handle_gs(cmd);
890 free(cmd);
891 break;
892 case FIO_NET_CMD_ETA:
893 remove_reply_cmd(client, cmd);
894 handle_eta(client, cmd);
895 free(cmd);
896 break;
897 case FIO_NET_CMD_PROBE:
898 remove_reply_cmd(client, cmd);
899 handle_probe(client, cmd);
900 free(cmd);
901 break;
902 case FIO_NET_CMD_RUN:
903 client->state = Client_running;
904 free(cmd);
905 break;
906 case FIO_NET_CMD_START:
907 handle_start(client, cmd);
908 free(cmd);
909 break;
910 case FIO_NET_CMD_STOP:
911 handle_stop(client, cmd);
912 free(cmd);
913 break;
914 default:
915 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
916 free(cmd);
917 break;
918 }
919
920 return 1;
921}
922
923static void request_client_etas(void)
924{
925 struct fio_client *client;
926 struct flist_head *entry;
927 struct client_eta *eta;
928 int skipped = 0;
929
930 dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
931
932 eta = malloc(sizeof(*eta));
933 memset(&eta->eta, 0, sizeof(eta->eta));
934 eta->pending = nr_clients;
935
936 flist_for_each(entry, &client_list) {
937 client = flist_entry(entry, struct fio_client, list);
938
939 if (!flist_empty(&client->eta_list)) {
940 skipped++;
941 continue;
942 }
943 if (client->state != Client_running)
944 continue;
945
946 assert(!client->eta_in_flight);
947 flist_add_tail(&client->eta_list, &eta_list);
948 client->eta_in_flight = eta;
949 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
950 (uintptr_t) eta, &client->cmd_list);
951 }
952
953 while (skipped--)
954 dec_jobs_eta(eta);
955
956 dprint(FD_NET, "client: requested eta tag %p\n", eta);
957}
958
959static int client_check_cmd_timeout(struct fio_client *client,
960 struct timeval *now)
961{
962 struct fio_net_int_cmd *cmd;
963 struct flist_head *entry, *tmp;
964 int ret = 0;
965
966 flist_for_each_safe(entry, tmp, &client->cmd_list) {
967 cmd = flist_entry(entry, struct fio_net_int_cmd, list);
968
969 if (mtime_since(&cmd->tv, now) < FIO_NET_CLIENT_TIMEOUT)
970 continue;
971
972 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
973 fio_server_op(cmd->cmd.opcode));
974 flist_del(&cmd->list);
975 free(cmd);
976 ret = 1;
977 }
978
979 return flist_empty(&client->cmd_list) && ret;
980}
981
982static int fio_client_timed_out(void)
983{
984 struct fio_client *client;
985 struct flist_head *entry, *tmp;
986 struct timeval tv;
987 int ret = 0;
988
989 gettimeofday(&tv, NULL);
990
991 flist_for_each_safe(entry, tmp, &client_list) {
992 client = flist_entry(entry, struct fio_client, list);
993
994 if (flist_empty(&client->cmd_list))
995 continue;
996
997 if (!client_check_cmd_timeout(client, &tv))
998 continue;
999
1000 log_err("fio: client %s timed out\n", client->hostname);
1001 remove_client(client);
1002 ret = 1;
1003 }
1004
1005 return ret;
1006}
1007
1008int fio_handle_clients(void)
1009{
1010 struct pollfd *pfds;
1011 int i, ret = 0, retval = 0;
1012
1013 gettimeofday(&eta_tv, NULL);
1014
1015 pfds = malloc(nr_clients * sizeof(struct pollfd));
1016
1017 sum_stat_clients = nr_clients;
1018 init_thread_stat(&client_ts);
1019 init_group_run_stat(&client_gs);
1020
1021 while (!exit_backend && nr_clients) {
1022 struct flist_head *entry, *tmp;
1023 struct fio_client *client;
1024
1025 i = 0;
1026 flist_for_each_safe(entry, tmp, &client_list) {
1027 client = flist_entry(entry, struct fio_client, list);
1028
1029 if (!client->sent_job &&
1030 flist_empty(&client->cmd_list)) {
1031 remove_client(client);
1032 continue;
1033 }
1034
1035 pfds[i].fd = client->fd;
1036 pfds[i].events = POLLIN;
1037 i++;
1038 }
1039
1040 if (!nr_clients)
1041 break;
1042
1043 assert(i == nr_clients);
1044
1045 do {
1046 struct timeval tv;
1047
1048 gettimeofday(&tv, NULL);
1049 if (mtime_since(&eta_tv, &tv) >= 900) {
1050 request_client_etas();
1051 memcpy(&eta_tv, &tv, sizeof(tv));
1052
1053 if (fio_client_timed_out())
1054 break;
1055 }
1056
1057 ret = poll(pfds, nr_clients, 100);
1058 if (ret < 0) {
1059 if (errno == EINTR)
1060 continue;
1061 log_err("fio: poll clients: %s\n", strerror(errno));
1062 break;
1063 } else if (!ret)
1064 continue;
1065 } while (ret <= 0);
1066
1067 for (i = 0; i < nr_clients; i++) {
1068 if (!(pfds[i].revents & POLLIN))
1069 continue;
1070
1071 client = find_client_by_fd(pfds[i].fd);
1072 if (!client) {
1073 log_err("fio: unknown client fd %d\n", pfds[i].fd);
1074 continue;
1075 }
1076 if (!handle_client(client)) {
1077 log_info("client: host=%s disconnected\n",
1078 client->hostname);
1079 remove_client(client);
1080 retval = 1;
1081 } else if (client->error)
1082 retval = 1;
1083 put_client(client);
1084 }
1085 }
1086
1087 free(pfds);
1088 return retval;
1089}
fio - Flexible IO Tester