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