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gfio: debug dump on iolog receive
[fio.git] / server.c
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1#include <stdio.h>
2#include <stdlib.h>
3#include <stdarg.h>
4#include <unistd.h>
5#include <limits.h>
6#include <errno.h>
7#include <fcntl.h>
8#include <sys/poll.h>
9#include <sys/types.h>
10#include <sys/wait.h>
11#include <sys/socket.h>
12#include <sys/stat.h>
13#include <sys/un.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19#include <zlib.h>
20
21#include "fio.h"
22#include "server.h"
23#include "crc/crc16.h"
24#include "lib/ieee754.h"
25
26#include "fio_version.h"
27
28int fio_net_port = FIO_NET_PORT;
29
30int exit_backend = 0;
31
32static int server_fd = -1;
33static char *fio_server_arg;
34static char *bind_sock;
35static struct sockaddr_in saddr_in;
36static struct sockaddr_in6 saddr_in6;
37static int first_cmd_check;
38static int use_ipv6;
39
40static const char *fio_server_ops[FIO_NET_CMD_NR] = {
41 "",
42 "QUIT",
43 "EXIT",
44 "JOB",
45 "JOBLINE",
46 "TEXT",
47 "TS",
48 "GS",
49 "SEND_ETA",
50 "ETA",
51 "PROBE",
52 "START",
53 "STOP",
54 "DISK_UTIL",
55 "SERVER_START",
56 "ADD_JOB",
57 "CMD_RUN"
58};
59
60const char *fio_server_op(unsigned int op)
61{
62 static char buf[32];
63
64 if (op < FIO_NET_CMD_NR)
65 return fio_server_ops[op];
66
67 sprintf(buf, "UNKNOWN/%d", op);
68 return buf;
69}
70
71static ssize_t iov_total_len(const struct iovec *iov, int count)
72{
73 ssize_t ret = 0;
74
75 while (count--) {
76 ret += iov->iov_len;
77 iov++;
78 }
79
80 return ret;
81}
82
83static int fio_sendv_data(int sk, struct iovec *iov, int count)
84{
85 ssize_t total_len = iov_total_len(iov, count);
86 ssize_t ret;
87
88 do {
89 ret = writev(sk, iov, count);
90 if (ret > 0) {
91 total_len -= ret;
92 if (!total_len)
93 break;
94
95 while (ret) {
96 if (ret >= iov->iov_len) {
97 ret -= iov->iov_len;
98 iov++;
99 continue;
100 }
101 iov->iov_base += ret;
102 iov->iov_len -= ret;
103 ret = 0;
104 }
105 } else if (!ret)
106 break;
107 else if (errno == EAGAIN || errno == EINTR)
108 continue;
109 else
110 break;
111 } while (!exit_backend);
112
113 if (!total_len)
114 return 0;
115
116 if (errno)
117 return -errno;
118
119 return 1;
120}
121
122int fio_send_data(int sk, const void *p, unsigned int len)
123{
124 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
125
126 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
127
128 return fio_sendv_data(sk, &iov, 1);
129}
130
131int fio_recv_data(int sk, void *p, unsigned int len)
132{
133 do {
134 int ret = recv(sk, p, len, MSG_WAITALL);
135
136 if (ret > 0) {
137 len -= ret;
138 if (!len)
139 break;
140 p += ret;
141 continue;
142 } else if (!ret)
143 break;
144 else if (errno == EAGAIN || errno == EINTR)
145 continue;
146 else
147 break;
148 } while (!exit_backend);
149
150 if (!len)
151 return 0;
152
153 return -1;
154}
155
156static int verify_convert_cmd(struct fio_net_cmd *cmd)
157{
158 uint16_t crc;
159
160 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
161 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
162
163 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
164 if (crc != cmd->cmd_crc16) {
165 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
166 cmd->cmd_crc16, crc);
167 return 1;
168 }
169
170 cmd->version = le16_to_cpu(cmd->version);
171 cmd->opcode = le16_to_cpu(cmd->opcode);
172 cmd->flags = le32_to_cpu(cmd->flags);
173 cmd->tag = le64_to_cpu(cmd->tag);
174 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
175
176 switch (cmd->version) {
177 case FIO_SERVER_VER:
178 break;
179 default:
180 log_err("fio: bad server cmd version %d\n", cmd->version);
181 return 1;
182 }
183
184 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
185 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
186 return 1;
187 }
188
189 return 0;
190}
191
192/*
193 * Read (and defragment, if necessary) incoming commands
194 */
195struct fio_net_cmd *fio_net_recv_cmd(int sk)
196{
197 struct fio_net_cmd cmd, *cmdret = NULL;
198 size_t cmd_size = 0, pdu_offset = 0;
199 uint16_t crc;
200 int ret, first = 1;
201 void *pdu = NULL;
202
203 do {
204 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
205 if (ret)
206 break;
207
208 /* We have a command, verify it and swap if need be */
209 ret = verify_convert_cmd(&cmd);
210 if (ret)
211 break;
212
213 if (first) {
214 /* if this is text, add room for \0 at the end */
215 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
216 assert(!cmdret);
217 } else
218 cmd_size += cmd.pdu_len;
219
220 cmdret = realloc(cmdret, cmd_size);
221
222 if (first)
223 memcpy(cmdret, &cmd, sizeof(cmd));
224 else if (cmdret->opcode != cmd.opcode) {
225 log_err("fio: fragment opcode mismatch (%d != %d)\n",
226 cmdret->opcode, cmd.opcode);
227 ret = 1;
228 break;
229 }
230
231 if (!cmd.pdu_len)
232 break;
233
234 /* There's payload, get it */
235 pdu = (void *) cmdret->payload + pdu_offset;
236 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
237 if (ret)
238 break;
239
240 /* Verify payload crc */
241 crc = fio_crc16(pdu, cmd.pdu_len);
242 if (crc != cmd.pdu_crc16) {
243 log_err("fio: server bad crc on payload ");
244 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
245 ret = 1;
246 break;
247 }
248
249 pdu_offset += cmd.pdu_len;
250 if (!first)
251 cmdret->pdu_len += cmd.pdu_len;
252 first = 0;
253 } while (cmd.flags & FIO_NET_CMD_F_MORE);
254
255 if (ret) {
256 free(cmdret);
257 cmdret = NULL;
258 } else if (cmdret) {
259 /* zero-terminate text input */
260 if (cmdret->pdu_len) {
261 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
262 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
263 char *buf = (char *) pdu->buf;
264
265 buf[pdu->buf_len ] = '\0';
266 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
267 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
268 char *buf = (char *) pdu->buf;
269 int len = le32_to_cpu(pdu->buf_len);
270
271 buf[len] = '\0';
272 }
273 }
274
275 /* frag flag is internal */
276 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
277 }
278
279 return cmdret;
280}
281
282void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, void *pdu)
283{
284 uint32_t pdu_len;
285
286 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
287
288 pdu_len = le32_to_cpu(cmd->pdu_len);
289 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
290}
291
292void fio_net_cmd_crc(struct fio_net_cmd *cmd)
293{
294 fio_net_cmd_crc_pdu(cmd, cmd->payload);
295}
296
297int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
298 uint64_t tag)
299{
300 struct fio_net_cmd *cmd = NULL;
301 size_t this_len, cur_len = 0;
302 int ret;
303
304 do {
305 this_len = size;
306 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
307 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
308
309 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
310 if (cmd)
311 free(cmd);
312
313 cur_len = sizeof(*cmd) + this_len;
314 cmd = malloc(cur_len);
315 }
316
317 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
318
319 if (this_len < size)
320 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
321
322 fio_net_cmd_crc(cmd);
323
324 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
325 size -= this_len;
326 buf += this_len;
327 } while (!ret && size);
328
329 if (cmd)
330 free(cmd);
331
332 return ret;
333}
334
335static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
336{
337 struct fio_net_cmd cmd;
338
339 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
340 fio_net_cmd_crc(&cmd);
341
342 return fio_send_data(sk, &cmd, sizeof(cmd));
343}
344
345/*
346 * If 'list' is non-NULL, then allocate and store the sent command for
347 * later verification.
348 */
349int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
350 struct flist_head *list)
351{
352 struct fio_net_int_cmd *cmd;
353 int ret;
354
355 if (!list)
356 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
357
358 cmd = malloc(sizeof(*cmd));
359
360 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
361 fio_net_cmd_crc(&cmd->cmd);
362
363 INIT_FLIST_HEAD(&cmd->list);
364 gettimeofday(&cmd->tv, NULL);
365 cmd->saved_tag = tag;
366
367 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
368 if (ret) {
369 free(cmd);
370 return ret;
371 }
372
373 flist_add_tail(&cmd->list, list);
374 return 0;
375}
376
377static int fio_server_send_quit_cmd(void)
378{
379 dprint(FD_NET, "server: sending quit\n");
380 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
381}
382
383static int handle_run_cmd(struct fio_net_cmd *cmd)
384{
385 struct cmd_end_pdu epdu;
386 int ret;
387
388 ret = fio_backend();
389
390 epdu.error = ret;
391 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
392
393 fio_server_send_quit_cmd();
394 reset_fio_state();
395 first_cmd_check = 0;
396 return ret;
397}
398
399static int handle_job_cmd(struct fio_net_cmd *cmd)
400{
401 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
402 void *buf = pdu->buf;
403 struct cmd_start_pdu spdu;
404
405 pdu->buf_len = le32_to_cpu(pdu->buf_len);
406 pdu->client_type = le32_to_cpu(pdu->client_type);
407
408 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
409 fio_server_send_quit_cmd();
410 return -1;
411 }
412
413 spdu.jobs = cpu_to_le32(thread_number);
414 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
415 return 0;
416}
417
418static int handle_jobline_cmd(struct fio_net_cmd *cmd)
419{
420 void *pdu = cmd->payload;
421 struct cmd_single_line_pdu *cslp;
422 struct cmd_line_pdu *clp;
423 unsigned long offset;
424 struct cmd_start_pdu spdu;
425 char **argv;
426 int i;
427
428 clp = pdu;
429 clp->lines = le16_to_cpu(clp->lines);
430 clp->client_type = le16_to_cpu(clp->client_type);
431 argv = malloc(clp->lines * sizeof(char *));
432 offset = sizeof(*clp);
433
434 dprint(FD_NET, "server: %d command line args\n", clp->lines);
435
436 for (i = 0; i < clp->lines; i++) {
437 cslp = pdu + offset;
438 argv[i] = (char *) cslp->text;
439
440 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
441 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
442 }
443
444 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
445 fio_server_send_quit_cmd();
446 free(argv);
447 return -1;
448 }
449
450 free(argv);
451
452 spdu.jobs = cpu_to_le32(thread_number);
453 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
454 return 0;
455}
456
457static int handle_probe_cmd(struct fio_net_cmd *cmd)
458{
459 struct cmd_probe_pdu probe;
460
461 dprint(FD_NET, "server: sending probe reply\n");
462
463 memset(&probe, 0, sizeof(probe));
464 gethostname((char *) probe.hostname, sizeof(probe.hostname));
465#ifdef FIO_BIG_ENDIAN
466 probe.bigendian = 1;
467#endif
468 probe.fio_major = FIO_MAJOR;
469 probe.fio_minor = FIO_MINOR;
470 probe.fio_patch = FIO_PATCH;
471
472 probe.os = FIO_OS;
473 probe.arch = FIO_ARCH;
474
475 probe.bpp = sizeof(void *);
476
477 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
478}
479
480static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
481{
482 struct jobs_eta *je;
483 size_t size;
484 int i;
485
486 if (!thread_number)
487 return 0;
488
489 size = sizeof(*je) + thread_number * sizeof(char) + 1;
490 je = malloc(size);
491 memset(je, 0, size);
492
493 if (!calc_thread_status(je, 1)) {
494 free(je);
495 return 0;
496 }
497
498 dprint(FD_NET, "server sending status\n");
499
500 je->nr_running = cpu_to_le32(je->nr_running);
501 je->nr_ramp = cpu_to_le32(je->nr_ramp);
502 je->nr_pending = cpu_to_le32(je->nr_pending);
503 je->files_open = cpu_to_le32(je->files_open);
504
505 for (i = 0; i < 2; i++) {
506 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
507 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
508 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
509 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
510 je->rate[i] = cpu_to_le32(je->rate[i]);
511 je->iops[i] = cpu_to_le32(je->iops[i]);
512 }
513
514 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
515 je->eta_sec = cpu_to_le64(je->eta_sec);
516 je->nr_threads = cpu_to_le32(je->nr_threads);
517
518 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
519 free(je);
520 return 0;
521}
522
523static int handle_command(struct fio_net_cmd *cmd)
524{
525 int ret;
526
527 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
528 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
529
530 switch (cmd->opcode) {
531 case FIO_NET_CMD_QUIT:
532 fio_terminate_threads(TERMINATE_ALL);
533 return -1;
534 case FIO_NET_CMD_EXIT:
535 exit_backend = 1;
536 return -1;
537 case FIO_NET_CMD_JOB:
538 ret = handle_job_cmd(cmd);
539 break;
540 case FIO_NET_CMD_JOBLINE:
541 ret = handle_jobline_cmd(cmd);
542 break;
543 case FIO_NET_CMD_PROBE:
544 ret = handle_probe_cmd(cmd);
545 break;
546 case FIO_NET_CMD_SEND_ETA:
547 ret = handle_send_eta_cmd(cmd);
548 break;
549 case FIO_NET_CMD_RUN:
550 ret = handle_run_cmd(cmd);
551 break;
552 default:
553 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
554 ret = 1;
555 }
556
557 return ret;
558}
559
560static int handle_connection(int sk, int block)
561{
562 struct fio_net_cmd *cmd = NULL;
563 int ret = 0;
564
565 /* read forever */
566 while (!exit_backend) {
567 struct pollfd pfd = {
568 .fd = sk,
569 .events = POLLIN,
570 };
571
572 ret = 0;
573 do {
574 ret = poll(&pfd, 1, 100);
575 if (ret < 0) {
576 if (errno == EINTR)
577 break;
578 log_err("fio: poll: %s\n", strerror(errno));
579 break;
580 } else if (!ret) {
581 if (!block)
582 return 0;
583 continue;
584 }
585
586 if (pfd.revents & POLLIN)
587 break;
588 if (pfd.revents & (POLLERR|POLLHUP)) {
589 ret = 1;
590 break;
591 }
592 } while (!exit_backend);
593
594 if (ret < 0)
595 break;
596
597 cmd = fio_net_recv_cmd(sk);
598 if (!cmd) {
599 ret = -1;
600 break;
601 }
602
603 ret = handle_command(cmd);
604 if (ret)
605 break;
606
607 free(cmd);
608 cmd = NULL;
609 }
610
611 if (cmd)
612 free(cmd);
613
614 return ret;
615}
616
617void fio_server_idle_loop(void)
618{
619 if (!first_cmd_check) {
620 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
621 first_cmd_check = 1;
622 }
623 if (server_fd != -1)
624 handle_connection(server_fd, 0);
625}
626
627static int accept_loop(int listen_sk)
628{
629 struct sockaddr_in addr;
630 fio_socklen_t len = sizeof(addr);
631 struct pollfd pfd;
632 int ret, sk, flags, exitval = 0;
633
634 dprint(FD_NET, "server enter accept loop\n");
635
636 flags = fcntl(listen_sk, F_GETFL);
637 flags |= O_NONBLOCK;
638 fcntl(listen_sk, F_SETFL, flags);
639again:
640 pfd.fd = listen_sk;
641 pfd.events = POLLIN;
642 do {
643 ret = poll(&pfd, 1, 100);
644 if (ret < 0) {
645 if (errno == EINTR)
646 break;
647 log_err("fio: poll: %s\n", strerror(errno));
648 goto out;
649 } else if (!ret)
650 continue;
651
652 if (pfd.revents & POLLIN)
653 break;
654 } while (!exit_backend);
655
656 if (exit_backend)
657 goto out;
658
659 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
660 if (sk < 0) {
661 log_err("fio: accept: %s\n", strerror(errno));
662 return -1;
663 }
664
665 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
666
667 server_fd = sk;
668
669 exitval = handle_connection(sk, 1);
670
671 server_fd = -1;
672 close(sk);
673
674 if (!exit_backend)
675 goto again;
676
677out:
678 return exitval;
679}
680
681int fio_server_text_output(int level, const char *buf, size_t len)
682{
683 struct cmd_text_pdu *pdu;
684 unsigned int tlen;
685 struct timeval tv;
686
687 if (server_fd == -1)
688 return log_local_buf(buf, len);
689
690 tlen = sizeof(*pdu) + len;
691 pdu = malloc(tlen);
692
693 pdu->level = __cpu_to_le32(level);
694 pdu->buf_len = __cpu_to_le32(len);
695
696 gettimeofday(&tv, NULL);
697 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
698 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
699
700 memcpy(pdu->buf, buf, len);
701
702 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
703 free(pdu);
704 return len;
705}
706
707static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
708{
709 dst->max_val = cpu_to_le64(src->max_val);
710 dst->min_val = cpu_to_le64(src->min_val);
711 dst->samples = cpu_to_le64(src->samples);
712
713 /*
714 * Encode to IEEE 754 for network transfer
715 */
716 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
717 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
718}
719
720static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
721{
722 int i;
723
724 for (i = 0; i < 2; i++) {
725 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
726 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
727 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
728 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
729 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
730 dst->agg[i] = cpu_to_le64(src->agg[i]);
731 }
732
733 dst->kb_base = cpu_to_le32(src->kb_base);
734 dst->groupid = cpu_to_le32(src->groupid);
735}
736
737/*
738 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
739 * into a single payload.
740 */
741void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
742{
743 struct cmd_ts_pdu p;
744 int i, j;
745
746 dprint(FD_NET, "server sending end stats\n");
747
748 memset(&p, 0, sizeof(p));
749
750 strcpy(p.ts.name, ts->name);
751 strcpy(p.ts.verror, ts->verror);
752 strcpy(p.ts.description, ts->description);
753
754 p.ts.error = cpu_to_le32(ts->error);
755 p.ts.groupid = cpu_to_le32(ts->groupid);
756 p.ts.pid = cpu_to_le32(ts->pid);
757 p.ts.members = cpu_to_le32(ts->members);
758
759 for (i = 0; i < 2; i++) {
760 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
761 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
762 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
763 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
764 }
765
766 p.ts.usr_time = cpu_to_le64(ts->usr_time);
767 p.ts.sys_time = cpu_to_le64(ts->sys_time);
768 p.ts.ctx = cpu_to_le64(ts->ctx);
769 p.ts.minf = cpu_to_le64(ts->minf);
770 p.ts.majf = cpu_to_le64(ts->majf);
771 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
772
773 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
774 fio_fp64_t *src = &ts->percentile_list[i];
775 fio_fp64_t *dst = &p.ts.percentile_list[i];
776
777 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
778 }
779
780 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
781 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
782 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
783 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
784 }
785
786 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
787 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
788 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
789 }
790
791 for (i = 0; i < 2; i++)
792 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
793 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
794
795 for (i = 0; i < 3; i++) {
796 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
797 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
798 }
799
800 p.ts.total_submit = cpu_to_le64(ts->total_submit);
801 p.ts.total_complete = cpu_to_le64(ts->total_complete);
802
803 for (i = 0; i < 2; i++) {
804 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
805 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
806 }
807
808 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
809 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
810 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
811 p.ts.first_error = cpu_to_le32(ts->first_error);
812 p.ts.kb_base = cpu_to_le32(ts->kb_base);
813
814 convert_gs(&p.rs, rs);
815
816 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
817}
818
819void fio_server_send_gs(struct group_run_stats *rs)
820{
821 struct group_run_stats gs;
822
823 dprint(FD_NET, "server sending group run stats\n");
824
825 convert_gs(&gs, rs);
826 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
827}
828
829static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
830{
831 int i;
832
833 for (i = 0; i < 2; i++) {
834 dst->ios[i] = cpu_to_le32(src->ios[i]);
835 dst->merges[i] = cpu_to_le32(src->merges[i]);
836 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
837 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
838 }
839
840 dst->io_ticks = cpu_to_le32(src->io_ticks);
841 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
842 dst->slavecount = cpu_to_le32(src->slavecount);
843 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
844}
845
846static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
847{
848 int i;
849
850 strcpy((char *) dst->name, (char *) src->name);
851
852 for (i = 0; i < 2; i++) {
853 dst->ios[i] = cpu_to_le32(src->ios[i]);
854 dst->merges[i] = cpu_to_le32(src->merges[i]);
855 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
856 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
857 }
858
859 dst->io_ticks = cpu_to_le32(src->io_ticks);
860 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
861 dst->msec = cpu_to_le64(src->msec);
862}
863
864void fio_server_send_du(void)
865{
866 struct disk_util *du;
867 struct flist_head *entry;
868 struct cmd_du_pdu pdu;
869
870 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
871
872 memset(&pdu, 0, sizeof(pdu));
873
874 flist_for_each(entry, &disk_list) {
875 du = flist_entry(entry, struct disk_util, list);
876
877 convert_dus(&pdu.dus, &du->dus);
878 convert_agg(&pdu.agg, &du->agg);
879
880 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
881 }
882}
883
884int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
885{
886 struct cmd_iolog_pdu pdu;
887 struct fio_net_cmd cmd;
888 z_stream stream;
889 void *out_pdu;
890 int i;
891
892 pdu.nr_samples = __cpu_to_le32(log->nr_samples);
893 pdu.log_type = cpu_to_le32(log->log_type);
894 strcpy((char *) pdu.name, name);
895
896 for (i = 0; i < log->nr_samples; i++) {
897 struct io_sample *s = &log->log[i];
898
899 s->time = cpu_to_le64(s->time);
900 s->val = cpu_to_le64(s->val);
901 s->ddir = cpu_to_le32(s->ddir);
902 s->bs = cpu_to_le32(s->bs);
903 }
904
905 /*
906 * Dirty - since the log is potentially huge, compress it into
907 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
908 * side defragment it.
909 */
910 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
911
912 stream.zalloc = Z_NULL;
913 stream.zfree = Z_NULL;
914 stream.opaque = Z_NULL;
915
916 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
917 free(out_pdu);
918 return 1;
919 }
920
921 /*
922 * Send header first, it's not compressed.
923 */
924 __fio_init_net_cmd(&cmd, FIO_NET_CMD_IOLOG, sizeof(pdu), 0);
925 cmd.flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
926 fio_net_cmd_crc_pdu(&cmd, &pdu);
927 fio_send_data(server_fd, &cmd, sizeof(cmd));
928 fio_send_data(server_fd, &pdu, sizeof(pdu));
929
930 stream.next_in = (void *) log->log;
931 stream.avail_in = log->nr_samples * sizeof(struct io_sample);
932
933 do {
934 unsigned int this_len;
935
936 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
937 stream.next_out = out_pdu;
938 assert(deflate(&stream, Z_FINISH) == Z_OK);
939
940 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
941
942 __fio_init_net_cmd(&cmd, FIO_NET_CMD_IOLOG, this_len, 0);
943
944 if (stream.avail_in)
945 cmd.flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
946
947 fio_net_cmd_crc_pdu(&cmd, out_pdu);
948
949 fio_send_data(server_fd, &cmd, sizeof(cmd));
950 fio_send_data(server_fd, out_pdu, this_len);
951 } while (stream.avail_in);
952
953 free(out_pdu);
954 deflateEnd(&stream);
955 return 0;
956}
957
958void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
959{
960 struct cmd_add_job_pdu pdu;
961
962 memset(&pdu, 0, sizeof(pdu));
963 convert_thread_options_to_net(&pdu.top, o);
964
965 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
966}
967
968static int fio_init_server_ip(void)
969{
970 struct sockaddr *addr;
971 fio_socklen_t socklen;
972 int sk, opt;
973
974 if (use_ipv6)
975 sk = socket(AF_INET6, SOCK_STREAM, 0);
976 else
977 sk = socket(AF_INET, SOCK_STREAM, 0);
978
979 if (sk < 0) {
980 log_err("fio: socket: %s\n", strerror(errno));
981 return -1;
982 }
983
984 opt = 1;
985 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
986 log_err("fio: setsockopt: %s\n", strerror(errno));
987 close(sk);
988 return -1;
989 }
990#ifdef SO_REUSEPORT
991 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
992 log_err("fio: setsockopt: %s\n", strerror(errno));
993 close(sk);
994 return -1;
995 }
996#endif
997
998 if (use_ipv6) {
999 addr = (struct sockaddr *) &saddr_in6;
1000 socklen = sizeof(saddr_in6);
1001 saddr_in6.sin6_family = AF_INET6;
1002 } else {
1003 addr = (struct sockaddr *) &saddr_in;
1004 socklen = sizeof(saddr_in);
1005 saddr_in.sin_family = AF_INET;
1006 }
1007
1008 if (bind(sk, addr, socklen) < 0) {
1009 log_err("fio: bind: %s\n", strerror(errno));
1010 close(sk);
1011 return -1;
1012 }
1013
1014 return sk;
1015}
1016
1017static int fio_init_server_sock(void)
1018{
1019 struct sockaddr_un addr;
1020 fio_socklen_t len;
1021 mode_t mode;
1022 int sk;
1023
1024 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1025 if (sk < 0) {
1026 log_err("fio: socket: %s\n", strerror(errno));
1027 return -1;
1028 }
1029
1030 mode = umask(000);
1031
1032 memset(&addr, 0, sizeof(addr));
1033 addr.sun_family = AF_UNIX;
1034 strcpy(addr.sun_path, bind_sock);
1035 unlink(bind_sock);
1036
1037 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1038
1039 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1040 log_err("fio: bind: %s\n", strerror(errno));
1041 close(sk);
1042 return -1;
1043 }
1044
1045 umask(mode);
1046 return sk;
1047}
1048
1049static int fio_init_server_connection(void)
1050{
1051 char bind_str[128];
1052 int sk;
1053
1054 dprint(FD_NET, "starting server\n");
1055
1056 if (!bind_sock)
1057 sk = fio_init_server_ip();
1058 else
1059 sk = fio_init_server_sock();
1060
1061 if (sk < 0)
1062 return sk;
1063
1064 if (!bind_sock) {
1065 char *p, port[16];
1066 const void *src;
1067 int af;
1068
1069 if (use_ipv6) {
1070 af = AF_INET6;
1071 src = &saddr_in6.sin6_addr;
1072 } else {
1073 af = AF_INET;
1074 src = &saddr_in.sin_addr;
1075 }
1076
1077 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1078
1079 sprintf(port, ",%u", fio_net_port);
1080 if (p)
1081 strcat(p, port);
1082 else
1083 strcpy(bind_str, port);
1084 } else
1085 strcpy(bind_str, bind_sock);
1086
1087 log_info("fio: server listening on %s\n", bind_str);
1088
1089 if (listen(sk, 0) < 0) {
1090 log_err("fio: listen: %s\n", strerror(errno));
1091 return -1;
1092 }
1093
1094 return sk;
1095}
1096
1097int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
1098 struct in6_addr *inp6)
1099
1100{
1101 int ret = 0;
1102
1103 if (*ipv6)
1104 ret = inet_pton(AF_INET6, host, inp6);
1105 else
1106 ret = inet_pton(AF_INET, host, inp);
1107
1108 if (ret != 1) {
1109 struct hostent *hent;
1110
1111 hent = gethostbyname(host);
1112 if (!hent) {
1113 log_err("fio: failed to resolve <%s>\n", host);
1114 return 0;
1115 }
1116
1117 if (*ipv6) {
1118 if (hent->h_addrtype != AF_INET6) {
1119 log_info("fio: falling back to IPv4\n");
1120 *ipv6 = 0;
1121 } else
1122 memcpy(inp6, hent->h_addr_list[0], 16);
1123 }
1124 if (!*ipv6) {
1125 if (hent->h_addrtype != AF_INET) {
1126 log_err("fio: lookup type mismatch\n");
1127 return 0;
1128 }
1129 memcpy(inp, hent->h_addr_list[0], 4);
1130 }
1131 ret = 1;
1132 }
1133
1134 return !(ret == 1);
1135}
1136
1137/*
1138 * Parse a host/ip/port string. Reads from 'str'.
1139 *
1140 * Outputs:
1141 *
1142 * For IPv4:
1143 * *ptr is the host, *port is the port, inp is the destination.
1144 * For IPv6:
1145 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1146 * For local domain sockets:
1147 * *ptr is the filename, *is_sock is 1.
1148 */
1149int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1150 int *port, struct in_addr *inp,
1151 struct in6_addr *inp6, int *ipv6)
1152{
1153 const char *host = str;
1154 char *portp;
1155 int lport = 0;
1156
1157 *ptr = NULL;
1158 *is_sock = 0;
1159 *port = fio_net_port;
1160 *ipv6 = 0;
1161
1162 if (!strncmp(str, "sock:", 5)) {
1163 *ptr = strdup(str + 5);
1164 *is_sock = 1;
1165
1166 return 0;
1167 }
1168
1169 /*
1170 * Is it ip:<ip or host>:port
1171 */
1172 if (!strncmp(host, "ip:", 3))
1173 host += 3;
1174 else if (!strncmp(host, "ip4:", 4))
1175 host += 4;
1176 else if (!strncmp(host, "ip6:", 4)) {
1177 host += 4;
1178 *ipv6 = 1;
1179 } else if (host[0] == ':') {
1180 /* String is :port */
1181 host++;
1182 lport = atoi(host);
1183 if (!lport || lport > 65535) {
1184 log_err("fio: bad server port %u\n", port);
1185 return 1;
1186 }
1187 /* no hostname given, we are done */
1188 *port = lport;
1189 return 0;
1190 }
1191
1192 /*
1193 * If no port seen yet, check if there's a last ':' at the end
1194 */
1195 if (!lport) {
1196 portp = strchr(host, ',');
1197 if (portp) {
1198 *portp = '\0';
1199 portp++;
1200 lport = atoi(portp);
1201 if (!lport || lport > 65535) {
1202 log_err("fio: bad server port %u\n", port);
1203 return 1;
1204 }
1205 }
1206 }
1207
1208 if (lport)
1209 *port = lport;
1210
1211 if (!strlen(host))
1212 return 0;
1213
1214 *ptr = strdup(host);
1215
1216 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1217 free(*ptr);
1218 *ptr = NULL;
1219 return 1;
1220 }
1221
1222 if (*port == 0)
1223 *port = fio_net_port;
1224
1225 return 0;
1226}
1227
1228/*
1229 * Server arg should be one of:
1230 *
1231 * sock:/path/to/socket
1232 * ip:1.2.3.4
1233 * 1.2.3.4
1234 *
1235 * Where sock uses unix domain sockets, and ip binds the server to
1236 * a specific interface. If no arguments are given to the server, it
1237 * uses IP and binds to 0.0.0.0.
1238 *
1239 */
1240static int fio_handle_server_arg(void)
1241{
1242 int port = fio_net_port;
1243 int is_sock, ret = 0;
1244
1245 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1246
1247 if (!fio_server_arg)
1248 goto out;
1249
1250 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1251 &port, &saddr_in.sin_addr,
1252 &saddr_in6.sin6_addr, &use_ipv6);
1253
1254 if (!is_sock && bind_sock) {
1255 free(bind_sock);
1256 bind_sock = NULL;
1257 }
1258
1259out:
1260 fio_net_port = port;
1261 saddr_in.sin_port = htons(port);
1262 saddr_in6.sin6_port = htons(port);
1263 return ret;
1264}
1265
1266static int fio_server(void)
1267{
1268 int sk, ret;
1269
1270 dprint(FD_NET, "starting server\n");
1271
1272 if (fio_handle_server_arg())
1273 return -1;
1274
1275 sk = fio_init_server_connection();
1276 if (sk < 0)
1277 return -1;
1278
1279 ret = accept_loop(sk);
1280
1281 close(sk);
1282
1283 if (fio_server_arg) {
1284 free(fio_server_arg);
1285 fio_server_arg = NULL;
1286 }
1287 if (bind_sock)
1288 free(bind_sock);
1289
1290 return ret;
1291}
1292
1293void fio_server_got_signal(int signal)
1294{
1295 if (signal == SIGPIPE)
1296 server_fd = -1;
1297 else {
1298 log_info("\nfio: terminating on signal %d\n", signal);
1299 exit_backend = 1;
1300 }
1301}
1302
1303static int check_existing_pidfile(const char *pidfile)
1304{
1305 struct stat sb;
1306 char buf[16];
1307 pid_t pid;
1308 FILE *f;
1309
1310 if (stat(pidfile, &sb))
1311 return 0;
1312
1313 f = fopen(pidfile, "r");
1314 if (!f)
1315 return 0;
1316
1317 if (fread(buf, sb.st_size, 1, f) <= 0) {
1318 fclose(f);
1319 return 1;
1320 }
1321 fclose(f);
1322
1323 pid = atoi(buf);
1324 if (kill(pid, SIGCONT) < 0)
1325 return errno != ESRCH;
1326
1327 return 1;
1328}
1329
1330static int write_pid(pid_t pid, const char *pidfile)
1331{
1332 FILE *fpid;
1333
1334 fpid = fopen(pidfile, "w");
1335 if (!fpid) {
1336 log_err("fio: failed opening pid file %s\n", pidfile);
1337 return 1;
1338 }
1339
1340 fprintf(fpid, "%u\n", (unsigned int) pid);
1341 fclose(fpid);
1342 return 0;
1343}
1344
1345/*
1346 * If pidfile is specified, background us.
1347 */
1348int fio_start_server(char *pidfile)
1349{
1350 pid_t pid;
1351 int ret;
1352
1353#if defined(WIN32)
1354 WSADATA wsd;
1355 WSAStartup(MAKEWORD(2,2), &wsd);
1356#endif
1357
1358 if (!pidfile)
1359 return fio_server();
1360
1361 if (check_existing_pidfile(pidfile)) {
1362 log_err("fio: pidfile %s exists and server appears alive\n",
1363 pidfile);
1364 return -1;
1365 }
1366
1367 pid = fork();
1368 if (pid < 0) {
1369 log_err("fio: failed server fork: %s", strerror(errno));
1370 free(pidfile);
1371 return -1;
1372 } else if (pid) {
1373 int ret = write_pid(pid, pidfile);
1374
1375 exit(ret);
1376 }
1377
1378 setsid();
1379 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1380 log_syslog = 1;
1381 close(STDIN_FILENO);
1382 close(STDOUT_FILENO);
1383 close(STDERR_FILENO);
1384 f_out = NULL;
1385 f_err = NULL;
1386
1387 ret = fio_server();
1388
1389 closelog();
1390 unlink(pidfile);
1391 free(pidfile);
1392 return ret;
1393}
1394
1395void fio_server_set_arg(const char *arg)
1396{
1397 fio_server_arg = strdup(arg);
1398}
fio - Flexible IO Tester