11ad1fe7f4c3ee84fb60967f2afe180072217857
[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 <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
23 struct fio_client {
24         struct flist_head list;
25         struct flist_head hash_list;
26         struct sockaddr_in addr;
27         struct sockaddr_un addr_un;
28         char *hostname;
29         int port;
30         int fd;
31
32         int state;
33         int skip_newline;
34         int is_sock;
35
36         uint16_t argc;
37         char **argv;
38 };
39
40 enum {
41         Client_created          = 0,
42         Client_connected        = 1,
43         Client_started          = 2,
44         Client_stopped          = 3,
45         Client_exited           = 4,
46 };
47
48 static FLIST_HEAD(client_list);
49
50 #define FIO_CLIENT_HASH_BITS    7
51 #define FIO_CLIENT_HASH_SZ      (1 << FIO_CLIENT_HASH_BITS)
52 #define FIO_CLIENT_HASH_MASK    (FIO_CLIENT_HASH_SZ - 1)
53 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
54
55 static int handle_client(struct fio_client *client);
56
57 static void fio_client_add_hash(struct fio_client *client)
58 {
59         int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
60
61         bucket &= FIO_CLIENT_HASH_MASK;
62         flist_add(&client->hash_list, &client_hash[bucket]);
63 }
64
65 static void fio_client_remove_hash(struct fio_client *client)
66 {
67         if (!flist_empty(&client->hash_list))
68                 flist_del_init(&client->hash_list);
69 }
70
71 static void fio_init fio_client_hash_init(void)
72 {
73         int i;
74
75         for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
76                 INIT_FLIST_HEAD(&client_hash[i]);
77 }
78
79 static struct fio_client *find_client_by_fd(int fd)
80 {
81         int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
82         struct fio_client *client;
83         struct flist_head *entry;
84
85         flist_for_each(entry, &client_hash[bucket]) {
86                 client = flist_entry(entry, struct fio_client, hash_list);
87
88                 if (client->fd == fd)
89                         return client;
90         }
91
92         return NULL;
93 }
94
95 static void remove_client(struct fio_client *client)
96 {
97         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
98         flist_del(&client->list);
99
100         fio_client_remove_hash(client);
101
102         free(client->hostname);
103         if (client->argv)
104                 free(client->argv);
105
106         free(client);
107         nr_clients--;
108 }
109
110 static int __fio_client_add_cmd_option(struct fio_client *client,
111                                        const char *opt)
112 {
113         int index;
114
115         if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
116                 log_err("fio: max cmd line number reached.\n");
117                 log_err("fio: cmd line <%s> has been ignored.\n", opt);
118                 return 1;
119         }
120
121         index = client->argc++;
122         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
123         client->argv[index] = strdup(opt);
124         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
125         return 0;
126 }
127
128 int fio_client_add_cmd_option(void *cookie, const char *opt)
129 {
130         struct fio_client *client = cookie;
131
132         if (!client || !opt)
133                 return 0;
134
135         return __fio_client_add_cmd_option(client, opt);
136 }
137
138 int fio_client_add(const char *hostname, void **cookie)
139 {
140         struct fio_client *client;
141
142         client = malloc(sizeof(*client));
143         memset(client, 0, sizeof(*client));
144
145         INIT_FLIST_HEAD(&client->list);
146         INIT_FLIST_HEAD(&client->hash_list);
147
148         if (fio_server_parse_string(hostname, &client->hostname,
149                                         &client->is_sock, &client->port,
150                                         &client->addr.sin_addr))
151                 return -1;
152
153         client->fd = -1;
154
155         __fio_client_add_cmd_option(client, "fio");
156
157         flist_add(&client->list, &client_list);
158         nr_clients++;
159         dprint(FD_NET, "client: added <%s>\n", client->hostname);
160         *cookie = client;
161         return 0;
162 }
163
164 static int fio_client_connect_ip(struct fio_client *client)
165 {
166         int fd;
167
168         client->addr.sin_family = AF_INET;
169         client->addr.sin_port = htons(client->port);
170
171         fd = socket(AF_INET, SOCK_STREAM, 0);
172         if (fd < 0) {
173                 log_err("fio: socket: %s\n", strerror(errno));
174                 return -1;
175         }
176
177         if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
178                 log_err("fio: connect: %s\n", strerror(errno));
179                 log_err("fio: failed to connect to %s\n", client->hostname);
180                 close(fd);
181                 return -1;
182         }
183
184         return fd;
185 }
186
187 static int fio_client_connect_sock(struct fio_client *client)
188 {
189         struct sockaddr_un *addr = &client->addr_un;
190         fio_socklen_t len;
191         int fd;
192
193         memset(addr, 0, sizeof(*addr));
194         addr->sun_family = AF_UNIX;
195         strcpy(addr->sun_path, client->hostname);
196
197         fd = socket(AF_UNIX, SOCK_STREAM, 0);
198         if (fd < 0) {
199                 log_err("fio: socket: %s\n", strerror(errno));
200                 return -1;
201         }
202
203         len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
204         if (connect(fd, (struct sockaddr *) addr, len) < 0) {
205                 log_err("fio: connect; %s\n", strerror(errno));
206                 close(fd);
207                 return -1;
208         }
209
210         return fd;
211 }
212
213 static int fio_client_connect(struct fio_client *client)
214 {
215         int fd;
216
217         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
218
219         memset(&client->addr, 0, sizeof(client->addr));
220
221         if (client->is_sock)
222                 fd = fio_client_connect_sock(client);
223         else
224                 fd = fio_client_connect_ip(client);
225
226         if (fd < 0)
227                 return 1;
228
229         client->fd = fd;
230         fio_client_add_hash(client);
231         client->state = Client_connected;
232         return 0;
233 }
234
235 void fio_clients_terminate(void)
236 {
237         struct flist_head *entry;
238         struct fio_client *client;
239
240         dprint(FD_NET, "client: terminate clients\n");
241
242         flist_for_each(entry, &client_list) {
243                 client = flist_entry(entry, struct fio_client, list);
244
245                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
246         }
247 }
248
249 static void sig_int(int sig)
250 {
251         dprint(FD_NET, "client: got signal %d\n", sig);
252         fio_clients_terminate();
253 }
254
255 static void client_signal_handler(void)
256 {
257         struct sigaction act;
258
259         memset(&act, 0, sizeof(act));
260         act.sa_handler = sig_int;
261         act.sa_flags = SA_RESTART;
262         sigaction(SIGINT, &act, NULL);
263
264         memset(&act, 0, sizeof(act));
265         act.sa_handler = sig_int;
266         act.sa_flags = SA_RESTART;
267         sigaction(SIGTERM, &act, NULL);
268 }
269
270 static void probe_client(struct fio_client *client)
271 {
272         dprint(FD_NET, "client: send probe\n");
273
274         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
275         handle_client(client);
276 }
277
278 static int send_client_cmd_line(struct fio_client *client)
279 {
280         struct cmd_line_pdu *pdu;
281         int i, ret;
282
283         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
284
285         pdu = malloc(sizeof(*pdu));
286         for (i = 0; i < client->argc; i++)
287                 strcpy((char *) pdu->argv[i], client->argv[i]);
288
289         pdu->argc = cpu_to_le16(client->argc);
290         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
291         free(pdu);
292         return ret;
293 }
294
295 int fio_clients_connect(void)
296 {
297         struct fio_client *client;
298         struct flist_head *entry, *tmp;
299         int ret;
300
301         dprint(FD_NET, "client: connect all\n");
302
303         client_signal_handler();
304
305         flist_for_each_safe(entry, tmp, &client_list) {
306                 client = flist_entry(entry, struct fio_client, list);
307
308                 ret = fio_client_connect(client);
309                 if (ret) {
310                         remove_client(client);
311                         continue;
312                 }
313
314                 probe_client(client);
315
316                 if (client->argc > 1)
317                         send_client_cmd_line(client);
318         }
319
320         return !nr_clients;
321 }
322
323 /*
324  * Send file contents to server backend. We could use sendfile(), but to remain
325  * more portable lets just read/write the darn thing.
326  */
327 static int fio_client_send_ini(struct fio_client *client, const char *filename)
328 {
329         struct stat sb;
330         char *p, *buf;
331         off_t len;
332         int fd, ret;
333
334         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
335
336         fd = open(filename, O_RDONLY);
337         if (fd < 0) {
338                 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
339                 return 1;
340         }
341
342         if (fstat(fd, &sb) < 0) {
343                 log_err("fio: job file stat: %s\n", strerror(errno));
344                 close(fd);
345                 return 1;
346         }
347
348         buf = malloc(sb.st_size);
349
350         len = sb.st_size;
351         p = buf;
352         do {
353                 ret = read(fd, p, len);
354                 if (ret > 0) {
355                         len -= ret;
356                         if (!len)
357                                 break;
358                         p += ret;
359                         continue;
360                 } else if (!ret)
361                         break;
362                 else if (errno == EAGAIN || errno == EINTR)
363                         continue;
364         } while (1);
365
366         if (len) {
367                 log_err("fio: failed reading job file %s\n", filename);
368                 close(fd);
369                 free(buf);
370                 return 1;
371         }
372
373         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
374         free(buf);
375         close(fd);
376         return ret;
377 }
378
379 int fio_clients_send_ini(const char *filename)
380 {
381         struct fio_client *client;
382         struct flist_head *entry, *tmp;
383
384         flist_for_each_safe(entry, tmp, &client_list) {
385                 client = flist_entry(entry, struct fio_client, list);
386
387                 if (fio_client_send_ini(client, filename))
388                         remove_client(client);
389         }
390
391         return !nr_clients;
392 }
393
394 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
395 {
396         dst->max_val    = le64_to_cpu(src->max_val);
397         dst->min_val    = le64_to_cpu(src->min_val);
398         dst->samples    = le64_to_cpu(src->samples);
399
400         /*
401          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
402          */
403         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
404         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
405 }
406
407 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
408 {
409         int i, j;
410
411         dst->error      = le32_to_cpu(src->error);
412         dst->groupid    = le32_to_cpu(src->groupid);
413         dst->pid        = le32_to_cpu(src->pid);
414         dst->members    = le32_to_cpu(src->members);
415
416         for (i = 0; i < 2; i++) {
417                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
418                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
419                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
420                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
421         }
422
423         dst->usr_time           = le64_to_cpu(src->usr_time);
424         dst->sys_time           = le64_to_cpu(src->sys_time);
425         dst->ctx                = le64_to_cpu(src->ctx);
426         dst->minf               = le64_to_cpu(src->minf);
427         dst->majf               = le64_to_cpu(src->majf);
428         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
429
430         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
431                 fio_fp64_t *fps = &src->percentile_list[i];
432                 fio_fp64_t *fpd = &dst->percentile_list[i];
433
434                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
435         }
436
437         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
438                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
439                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
440                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
441         }
442
443         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
444                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
445                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
446         }
447
448         for (i = 0; i < 2; i++)
449                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
450                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
451
452         for (i = 0; i < 3; i++) {
453                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
454                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
455         }
456
457         dst->total_submit       = le64_to_cpu(src->total_submit);
458         dst->total_complete     = le64_to_cpu(src->total_complete);
459
460         for (i = 0; i < 2; i++) {
461                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
462                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
463         }
464
465         dst->total_run_time     = le64_to_cpu(src->total_run_time);
466         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
467         dst->total_err_count    = le64_to_cpu(src->total_err_count);
468         dst->first_error        = le32_to_cpu(src->first_error);
469         dst->kb_base            = le32_to_cpu(src->kb_base);
470 }
471
472 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
473 {
474         int i;
475
476         for (i = 0; i < 2; i++) {
477                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
478                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
479                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
480                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
481                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
482                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
483         }
484
485         dst->kb_base    = le32_to_cpu(src->kb_base);
486         dst->groupid    = le32_to_cpu(src->groupid);
487 }
488
489 static void handle_ts(struct fio_net_cmd *cmd)
490 {
491         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
492
493         convert_ts(&p->ts, &p->ts);
494         convert_gs(&p->rs, &p->rs);
495
496         show_thread_status(&p->ts, &p->rs);
497 }
498
499 static void handle_gs(struct fio_net_cmd *cmd)
500 {
501         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
502
503         convert_gs(gs, gs);
504         show_group_stats(gs);
505 }
506
507 static void handle_eta(struct fio_net_cmd *cmd)
508 {
509         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
510         int i;
511
512         je->nr_running          = le32_to_cpu(je->nr_running);
513         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
514         je->nr_pending          = le32_to_cpu(je->nr_pending);
515         je->files_open          = le32_to_cpu(je->files_open);
516         je->m_rate              = le32_to_cpu(je->m_rate);
517         je->t_rate              = le32_to_cpu(je->t_rate);
518         je->m_iops              = le32_to_cpu(je->m_iops);
519         je->t_iops              = le32_to_cpu(je->t_iops);
520
521         for (i = 0; i < 2; i++) {
522                 je->rate[i]     = le32_to_cpu(je->rate[i]);
523                 je->iops[i]     = le32_to_cpu(je->iops[i]);
524         }
525
526         je->elapsed_sec         = le32_to_cpu(je->nr_running);
527         je->eta_sec             = le64_to_cpu(je->eta_sec);
528
529         display_thread_status(je);
530 }
531
532 static void handle_probe(struct fio_net_cmd *cmd)
533 {
534         struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
535
536         log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
537                 probe->hostname, probe->bigendian, probe->fio_major,
538                 probe->fio_minor, probe->fio_patch);
539 }
540
541 static int handle_client(struct fio_client *client)
542 {
543         struct fio_net_cmd *cmd;
544
545         dprint(FD_NET, "client: handle %s\n", client->hostname);
546
547         cmd = fio_net_recv_cmd(client->fd);
548         if (!cmd)
549                 return 0;
550
551         dprint(FD_NET, "client: got cmd op %d from %s\n",
552                                         cmd->opcode, client->hostname);
553
554         switch (cmd->opcode) {
555         case FIO_NET_CMD_QUIT:
556                 remove_client(client);
557                 free(cmd);
558                 break;
559         case FIO_NET_CMD_TEXT: {
560                 const char *buf = (const char *) cmd->payload;
561                 int fio_unused ret;
562
563                 if (!client->skip_newline)
564                         fprintf(f_out, "<%s> ", client->hostname);
565                 ret = fwrite(buf, cmd->pdu_len, 1, f_out);
566                 fflush(f_out);
567                 client->skip_newline = strchr(buf, '\n') == NULL;
568                 free(cmd);
569                 break;
570                 }
571         case FIO_NET_CMD_TS:
572                 handle_ts(cmd);
573                 free(cmd);
574                 break;
575         case FIO_NET_CMD_GS:
576                 handle_gs(cmd);
577                 free(cmd);
578                 break;
579         case FIO_NET_CMD_ETA:
580                 handle_eta(cmd);
581                 free(cmd);
582                 break;
583         case FIO_NET_CMD_PROBE:
584                 handle_probe(cmd);
585                 free(cmd);
586                 break;
587         case FIO_NET_CMD_START:
588                 client->state = Client_started;
589                 free(cmd);
590                 break;
591         case FIO_NET_CMD_STOP:
592                 client->state = Client_stopped;
593                 free(cmd);
594                 break;
595         default:
596                 log_err("fio: unknown client op: %d\n", cmd->opcode);
597                 free(cmd);
598                 break;
599         }
600
601         return 1;
602 }
603
604 int fio_handle_clients(void)
605 {
606         struct fio_client *client;
607         struct flist_head *entry;
608         struct pollfd *pfds;
609         int i, ret = 0;
610
611         pfds = malloc(nr_clients * sizeof(struct pollfd));
612
613         while (!exit_backend && nr_clients) {
614                 i = 0;
615                 flist_for_each(entry, &client_list) {
616                         client = flist_entry(entry, struct fio_client, list);
617
618                         pfds[i].fd = client->fd;
619                         pfds[i].events = POLLIN;
620                         i++;
621                 }
622
623                 assert(i == nr_clients);
624
625                 do {
626                         ret = poll(pfds, nr_clients, 100);
627                         if (ret < 0) {
628                                 if (errno == EINTR)
629                                         continue;
630                                 log_err("fio: poll clients: %s\n", strerror(errno));
631                                 break;
632                         } else if (!ret)
633                                 continue;
634                 } while (ret <= 0);
635
636                 for (i = 0; i < nr_clients; i++) {
637                         if (!(pfds[i].revents & POLLIN))
638                                 continue;
639
640                         client = find_client_by_fd(pfds[i].fd);
641                         if (!client) {
642                                 log_err("fio: unknown client fd %d\n", pfds[i].fd);
643                                 continue;
644                         }
645                         if (!handle_client(client)) {
646                                 log_info("client: host=%s disconnected\n",
647                                                 client->hostname);
648                                 remove_client(client);
649                         }
650                 }
651         }
652
653         free(pfds);
654         return 0;
655 }