5a6fc39ff8dac6f984e5bdfa2603a210ec9973b4
[fio.git] / client.c
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 <netinet/in.h>
13 #include <arpa/inet.h>
14 #include <netdb.h>
15 #include <signal.h>
16
17 #include "fio.h"
18 #include "server.h"
19 #include "crc/crc32.h"
20 #include "flist.h"
21
22 struct fio_client {
23         struct flist_head list;
24         struct sockaddr_in addr;
25         char *hostname;
26         int fd;
27
28         int state;
29         int skip_newline;
30
31         uint16_t argc;
32         char **argv;
33 };
34
35 enum {
36         Client_created          = 0,
37         Client_connected        = 1,
38         Client_started          = 2,
39         Client_stopped          = 3,
40         Client_exited           = 4,
41 };
42
43 static FLIST_HEAD(client_list);
44
45 static int handle_client(struct fio_client *client, int one, int block);
46
47 static struct fio_client *find_client_by_fd(int fd)
48 {
49         struct fio_client *client;
50         struct flist_head *entry;
51
52         flist_for_each(entry, &client_list) {
53                 client = flist_entry(entry, struct fio_client, list);
54
55                 if (client->fd == fd)
56                         return client;
57         }
58
59         return NULL;
60 }
61
62 static struct fio_client *find_client_by_name(const char *name)
63 {
64         struct fio_client *client;
65         struct flist_head *entry;
66
67         flist_for_each(entry, &client_list) {
68                 client = flist_entry(entry, struct fio_client, list);
69
70                 if (!strcmp(name, client->hostname))
71                         return client;
72         }
73
74         return NULL;
75 }
76
77 static void remove_client(struct fio_client *client)
78 {
79         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
80         flist_del(&client->list);
81         nr_clients--;
82
83         free(client->hostname);
84         if (client->argv)
85                 free(client->argv);
86
87         free(client);
88 }
89
90 static int __fio_client_add_cmd_option(struct fio_client *client,
91                                        const char *opt)
92 {
93         int index;
94
95         if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
96                 log_err("fio: max cmd line number reached.\n");
97                 log_err("fio: cmd line <%s> has been ignored.\n", opt);
98                 return 1;
99         }
100
101         index = client->argc++;
102         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
103         client->argv[index] = strdup(opt);
104         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
105         return 0;
106 }
107
108 int fio_client_add_cmd_option(const char *hostname, const char *opt)
109 {
110         struct fio_client *client;
111
112         if (!hostname || !opt)
113                 return 0;
114
115         client = find_client_by_name(hostname);
116         if (!client) {
117                 log_err("fio: unknown client %s\n", hostname);
118                 return 1;
119         }
120
121         return __fio_client_add_cmd_option(client, opt);
122 }
123
124 void fio_client_add(const char *hostname)
125 {
126         struct fio_client *client;
127
128         dprint(FD_NET, "client: added  <%s>\n", hostname);
129         client = malloc(sizeof(*client));
130         memset(client, 0, sizeof(*client));
131
132         client->hostname = strdup(hostname);
133         client->fd = -1;
134
135         __fio_client_add_cmd_option(client, "fio");
136
137         flist_add(&client->list, &client_list);
138         nr_clients++;
139 }
140
141 static int fio_client_connect(struct fio_client *client)
142 {
143         int fd;
144
145         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
146
147         memset(&client->addr, 0, sizeof(client->addr));
148         client->addr.sin_family = AF_INET;
149         client->addr.sin_port = htons(fio_net_port);
150
151         if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
152                 struct hostent *hent;
153
154                 hent = gethostbyname(client->hostname);
155                 if (!hent) {
156                         log_err("fio: gethostbyname: %s\n", strerror(errno));
157                         return 1;
158                 }
159
160                 memcpy(&client->addr.sin_addr, hent->h_addr, 4);
161         }
162
163         fd = socket(AF_INET, SOCK_STREAM, 0);
164         if (fd < 0) {
165                 log_err("fio: socket: %s\n", strerror(errno));
166                 return 1;
167         }
168
169         if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
170                 log_err("fio: connect: %s\n", strerror(errno));
171                 log_err("fio: failed to connect to %s\n", client->hostname);
172                 return 1;
173         }
174
175         client->fd = fd;
176         client->state = Client_connected;
177         return 0;
178 }
179
180 void fio_clients_terminate(void)
181 {
182         struct flist_head *entry;
183         struct fio_client *client;
184
185         dprint(FD_NET, "client: terminate clients\n");
186
187         flist_for_each(entry, &client_list) {
188                 client = flist_entry(entry, struct fio_client, list);
189
190                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
191         }
192 }
193
194 static void sig_int(int sig)
195 {
196         dprint(FD_NET, "client: got sign %d\n", sig);
197         fio_clients_terminate();
198 }
199
200 static void client_signal_handler(void)
201 {
202         struct sigaction act;
203
204         memset(&act, 0, sizeof(act));
205         act.sa_handler = sig_int;
206         act.sa_flags = SA_RESTART;
207         sigaction(SIGINT, &act, NULL);
208
209         memset(&act, 0, sizeof(act));
210         act.sa_handler = sig_int;
211         act.sa_flags = SA_RESTART;
212         sigaction(SIGTERM, &act, NULL);
213 }
214
215 static void probe_client(struct fio_client *client)
216 {
217         dprint(FD_NET, "client: send probe\n");
218
219         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
220         handle_client(client, 1, 1);
221 }
222
223 static int send_client_cmd_line(struct fio_client *client)
224 {
225         struct cmd_line_pdu *pdu;
226         int i, ret;
227
228         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
229
230         pdu = malloc(sizeof(*pdu));
231         for (i = 0; i < client->argc; i++)
232                 strcpy((char *) pdu->argv[i], client->argv[i]);
233
234         pdu->argc = cpu_to_le16(client->argc);
235         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
236         free(pdu);
237         return ret;
238 }
239
240 int fio_clients_connect(void)
241 {
242         struct fio_client *client;
243         struct flist_head *entry, *tmp;
244         int ret;
245
246         dprint(FD_NET, "client: connect all\n");
247
248         client_signal_handler();
249
250         flist_for_each_safe(entry, tmp, &client_list) {
251                 client = flist_entry(entry, struct fio_client, list);
252
253                 ret = fio_client_connect(client);
254                 if (ret) {
255                         remove_client(client);
256                         continue;
257                 }
258
259                 probe_client(client);
260
261                 if (client->argc > 1)
262                         send_client_cmd_line(client);
263         }
264
265         return !nr_clients;
266 }
267
268 /*
269  * Send file contents to server backend. We could use sendfile(), but to remain
270  * more portable lets just read/write the darn thing.
271  */
272 static int fio_client_send_ini(struct fio_client *client, const char *filename)
273 {
274         struct stat sb;
275         char *p, *buf;
276         off_t len;
277         int fd, ret;
278
279         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
280
281         fd = open(filename, O_RDONLY);
282         if (fd < 0) {
283                 log_err("fio: job file open: %s\n", strerror(errno));
284                 return 1;
285         }
286
287         if (fstat(fd, &sb) < 0) {
288                 log_err("fio: job file stat: %s\n", strerror(errno));
289                 return 1;
290         }
291
292         buf = malloc(sb.st_size);
293
294         len = sb.st_size;
295         p = buf;
296         do {
297                 ret = read(fd, p, len);
298                 if (ret > 0) {
299                         len -= ret;
300                         if (!len)
301                                 break;
302                         p += ret;
303                         continue;
304                 } else if (!ret)
305                         break;
306                 else if (errno == EAGAIN || errno == EINTR)
307                         continue;
308         } while (1);
309
310         if (len) {
311                 log_err("fio: failed reading job file %s\n", filename);
312                 return 1;
313         }
314
315         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
316         free(buf);
317         return ret;
318 }
319
320 int fio_clients_send_ini(const char *filename)
321 {
322         struct fio_client *client;
323         struct flist_head *entry, *tmp;
324
325         flist_for_each_safe(entry, tmp, &client_list) {
326                 client = flist_entry(entry, struct fio_client, list);
327
328                 if (fio_client_send_ini(client, filename))
329                         remove_client(client);
330         }
331
332         return !nr_clients;
333 }
334
335 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
336 {
337         dst->max_val    = le64_to_cpu(src->max_val);
338         dst->min_val    = le64_to_cpu(src->min_val);
339         dst->samples    = le64_to_cpu(src->samples);
340
341         /*
342          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
343          */
344         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
345         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
346 }
347
348 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
349 {
350         int i, j;
351
352         dst->error      = le32_to_cpu(src->error);
353         dst->groupid    = le32_to_cpu(src->groupid);
354         dst->pid        = le32_to_cpu(src->pid);
355         dst->members    = le32_to_cpu(src->members);
356
357         for (i = 0; i < 2; i++) {
358                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
359                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
360                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
361                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
362         }
363
364         dst->usr_time           = le64_to_cpu(src->usr_time);
365         dst->sys_time           = le64_to_cpu(src->sys_time);
366         dst->ctx                = le64_to_cpu(src->ctx);
367         dst->minf               = le64_to_cpu(src->minf);
368         dst->majf               = le64_to_cpu(src->majf);
369         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
370
371         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
372                 fio_fp64_t *fps = &src->percentile_list[i];
373                 fio_fp64_t *fpd = &dst->percentile_list[i];
374
375                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
376         }
377
378         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
379                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
380                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
381                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
382         }
383
384         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
385                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
386                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
387         }
388
389         for (i = 0; i < 2; i++)
390                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
391                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
392
393         for (i = 0; i < 3; i++) {
394                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
395                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
396         }
397
398         dst->total_submit       = le64_to_cpu(src->total_submit);
399         dst->total_complete     = le64_to_cpu(src->total_complete);
400
401         for (i = 0; i < 2; i++) {
402                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
403                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
404         }
405
406         dst->total_run_time     = le64_to_cpu(src->total_run_time);
407         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
408         dst->total_err_count    = le64_to_cpu(src->total_err_count);
409         dst->first_error        = le32_to_cpu(src->first_error);
410         dst->kb_base            = le32_to_cpu(src->kb_base);
411 }
412
413 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
414 {
415         int i;
416
417         for (i = 0; i < 2; i++) {
418                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
419                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
420                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
421                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
422                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
423                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
424         }
425
426         dst->kb_base    = le32_to_cpu(src->kb_base);
427         dst->groupid    = le32_to_cpu(src->groupid);
428 }
429
430 static void handle_ts(struct fio_net_cmd *cmd)
431 {
432         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
433
434         convert_ts(&p->ts, &p->ts);
435         convert_gs(&p->rs, &p->rs);
436
437         show_thread_status(&p->ts, &p->rs);
438 }
439
440 static void handle_gs(struct fio_net_cmd *cmd)
441 {
442         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
443
444         convert_gs(gs, gs);
445         show_group_stats(gs);
446 }
447
448 static void handle_eta(struct fio_net_cmd *cmd)
449 {
450         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
451         int i;
452
453         je->nr_running          = le32_to_cpu(je->nr_running);
454         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
455         je->nr_pending          = le32_to_cpu(je->nr_pending);
456         je->files_open          = le32_to_cpu(je->files_open);
457         je->m_rate              = le32_to_cpu(je->m_rate);
458         je->t_rate              = le32_to_cpu(je->t_rate);
459         je->m_iops              = le32_to_cpu(je->m_iops);
460         je->t_iops              = le32_to_cpu(je->t_iops);
461
462         for (i = 0; i < 2; i++) {
463                 je->rate[i]     = le32_to_cpu(je->rate[i]);
464                 je->iops[i]     = le32_to_cpu(je->iops[i]);
465         }
466
467         je->elapsed_sec         = le32_to_cpu(je->nr_running);
468         je->eta_sec             = le64_to_cpu(je->eta_sec);
469
470         display_thread_status(je);
471 }
472
473 static void handle_probe(struct fio_net_cmd *cmd)
474 {
475         struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
476
477         log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
478                 probe->hostname, probe->bigendian, probe->fio_major,
479                 probe->fio_minor, probe->fio_patch);
480 }
481
482 static int handle_client(struct fio_client *client, int one, int block)
483 {
484         struct fio_net_cmd *cmd;
485         int done = 0, did_cmd = 0;
486
487         dprint(FD_NET, "client: handle %s\n", client->hostname);
488
489         while ((cmd = fio_net_recv_cmd(client->fd, block)) != NULL) {
490                 did_cmd++;
491
492                 dprint(FD_NET, "client: got cmd op %d from %s\n",
493                                         cmd->opcode, client->hostname);
494
495                 switch (cmd->opcode) {
496                 case FIO_NET_CMD_QUIT:
497                         remove_client(client);
498                         free(cmd);
499                         done = 1;
500                         break;
501                 case FIO_NET_CMD_TEXT: {
502                         const char *buf = (const char *) cmd->payload;
503                         int fio_unused ret;
504
505                         if (!client->skip_newline)
506                                 fprintf(f_out, "<%s> ", client->hostname);
507                         ret = fwrite(buf, cmd->pdu_len, 1, f_out);
508                         fflush(f_out);
509                         client->skip_newline = strchr(buf, '\n') == NULL;
510                         free(cmd);
511                         break;
512                         }
513                 case FIO_NET_CMD_TS:
514                         handle_ts(cmd);
515                         free(cmd);
516                         break;
517                 case FIO_NET_CMD_GS:
518                         handle_gs(cmd);
519                         free(cmd);
520                         break;
521                 case FIO_NET_CMD_ETA:
522                         handle_eta(cmd);
523                         free(cmd);
524                         break;
525                 case FIO_NET_CMD_PROBE:
526                         handle_probe(cmd);
527                         free(cmd);
528                         break;
529                 case FIO_NET_CMD_START:
530                         client->state = Client_started;
531                         free(cmd);
532                         break;
533                 case FIO_NET_CMD_STOP:
534                         client->state = Client_stopped;
535                         free(cmd);
536                         break;
537                 default:
538                         log_err("fio: unknown client op: %d\n", cmd->opcode);
539                         free(cmd);
540                         break;
541                 }
542
543                 if (done || one)
544                         break;
545         }
546
547         return did_cmd;
548 }
549
550 int fio_handle_clients(void)
551 {
552         struct fio_client *client;
553         struct flist_head *entry;
554         struct pollfd *pfds;
555         int i, ret = 0;
556
557         pfds = malloc(nr_clients * sizeof(struct pollfd));
558
559         while (!exit_backend && nr_clients) {
560                 i = 0;
561                 flist_for_each(entry, &client_list) {
562                         client = flist_entry(entry, struct fio_client, list);
563
564                         pfds[i].fd = client->fd;
565                         pfds[i].events = POLLIN;
566                         i++;
567                 }
568
569                 assert(i == nr_clients);
570
571                 do {
572                         ret = poll(pfds, nr_clients, 100);
573                         if (ret < 0) {
574                                 if (errno == EINTR)
575                                         continue;
576                                 log_err("fio: poll clients: %s\n", strerror(errno));
577                                 break;
578                         } else if (!ret)
579                                 continue;
580                 } while (ret <= 0);
581
582                 for (i = 0; i < nr_clients; i++) {
583                         if (!(pfds[i].revents & POLLIN))
584                                 continue;
585
586                         client = find_client_by_fd(pfds[i].fd);
587                         if (!client) {
588                                 log_err("fio: unknown client\n");
589                                 continue;
590                         }
591                         if (!handle_client(client, 0, 0)) {
592                                 log_info("client: host=%s disconnected\n",
593                                                 client->hostname);
594                                 remove_client(client);
595                         }
596                 }
597         }
598
599         free(pfds);
600         return 0;
601 }