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Commit | Line | Data |
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1 | /* | |
2 | * Command line utility to exercise the QEMU I/O path. | |
3 | * | |
4 | * Copyright (C) 2009 Red Hat, Inc. | |
5 | * Copyright (c) 2003-2005 Silicon Graphics, Inc. | |
6 | * | |
7 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
8 | * See the COPYING file in the top-level directory. | |
9 | */ | |
10 | #include <sys/time.h> | |
11 | #include <sys/types.h> | |
12 | #include <stdarg.h> | |
13 | #include <stdio.h> | |
14 | #include <getopt.h> | |
15 | #include <libgen.h> | |
16 | ||
17 | #include "qemu-common.h" | |
18 | #include "main-loop.h" | |
19 | #include "block_int.h" | |
20 | #include "cmd.h" | |
21 | #include "trace/control.h" | |
22 | ||
23 | #define VERSION "0.0.1" | |
24 | ||
25 | #define CMD_NOFILE_OK 0x01 | |
26 | ||
27 | char *progname; | |
28 | static BlockDriverState *bs; | |
29 | ||
30 | static int misalign; | |
31 | ||
32 | /* | |
33 | * Parse the pattern argument to various sub-commands. | |
34 | * | |
35 | * Because the pattern is used as an argument to memset it must evaluate | |
36 | * to an unsigned integer that fits into a single byte. | |
37 | */ | |
38 | static int parse_pattern(const char *arg) | |
39 | { | |
40 | char *endptr = NULL; | |
41 | long pattern; | |
42 | ||
43 | pattern = strtol(arg, &endptr, 0); | |
44 | if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { | |
45 | printf("%s is not a valid pattern byte\n", arg); | |
46 | return -1; | |
47 | } | |
48 | ||
49 | return pattern; | |
50 | } | |
51 | ||
52 | /* | |
53 | * Memory allocation helpers. | |
54 | * | |
55 | * Make sure memory is aligned by default, or purposefully misaligned if | |
56 | * that is specified on the command line. | |
57 | */ | |
58 | ||
59 | #define MISALIGN_OFFSET 16 | |
60 | static void *qemu_io_alloc(size_t len, int pattern) | |
61 | { | |
62 | void *buf; | |
63 | ||
64 | if (misalign) { | |
65 | len += MISALIGN_OFFSET; | |
66 | } | |
67 | buf = qemu_blockalign(bs, len); | |
68 | memset(buf, pattern, len); | |
69 | if (misalign) { | |
70 | buf += MISALIGN_OFFSET; | |
71 | } | |
72 | return buf; | |
73 | } | |
74 | ||
75 | static void qemu_io_free(void *p) | |
76 | { | |
77 | if (misalign) { | |
78 | p -= MISALIGN_OFFSET; | |
79 | } | |
80 | qemu_vfree(p); | |
81 | } | |
82 | ||
83 | static void dump_buffer(const void *buffer, int64_t offset, int len) | |
84 | { | |
85 | int i, j; | |
86 | const uint8_t *p; | |
87 | ||
88 | for (i = 0, p = buffer; i < len; i += 16) { | |
89 | const uint8_t *s = p; | |
90 | ||
91 | printf("%08" PRIx64 ": ", offset + i); | |
92 | for (j = 0; j < 16 && i + j < len; j++, p++) { | |
93 | printf("%02x ", *p); | |
94 | } | |
95 | printf(" "); | |
96 | for (j = 0; j < 16 && i + j < len; j++, s++) { | |
97 | if (isalnum(*s)) { | |
98 | printf("%c", *s); | |
99 | } else { | |
100 | printf("."); | |
101 | } | |
102 | } | |
103 | printf("\n"); | |
104 | } | |
105 | } | |
106 | ||
107 | static void print_report(const char *op, struct timeval *t, int64_t offset, | |
108 | int count, int total, int cnt, int Cflag) | |
109 | { | |
110 | char s1[64], s2[64], ts[64]; | |
111 | ||
112 | timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); | |
113 | if (!Cflag) { | |
114 | cvtstr((double)total, s1, sizeof(s1)); | |
115 | cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); | |
116 | printf("%s %d/%d bytes at offset %" PRId64 "\n", | |
117 | op, total, count, offset); | |
118 | printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", | |
119 | s1, cnt, ts, s2, tdiv((double)cnt, *t)); | |
120 | } else {/* bytes,ops,time,bytes/sec,ops/sec */ | |
121 | printf("%d,%d,%s,%.3f,%.3f\n", | |
122 | total, cnt, ts, | |
123 | tdiv((double)total, *t), | |
124 | tdiv((double)cnt, *t)); | |
125 | } | |
126 | } | |
127 | ||
128 | /* | |
129 | * Parse multiple length statements for vectored I/O, and construct an I/O | |
130 | * vector matching it. | |
131 | */ | |
132 | static void * | |
133 | create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern) | |
134 | { | |
135 | size_t *sizes = g_new0(size_t, nr_iov); | |
136 | size_t count = 0; | |
137 | void *buf = NULL; | |
138 | void *p; | |
139 | int i; | |
140 | ||
141 | for (i = 0; i < nr_iov; i++) { | |
142 | char *arg = argv[i]; | |
143 | int64_t len; | |
144 | ||
145 | len = cvtnum(arg); | |
146 | if (len < 0) { | |
147 | printf("non-numeric length argument -- %s\n", arg); | |
148 | goto fail; | |
149 | } | |
150 | ||
151 | /* should be SIZE_T_MAX, but that doesn't exist */ | |
152 | if (len > INT_MAX) { | |
153 | printf("too large length argument -- %s\n", arg); | |
154 | goto fail; | |
155 | } | |
156 | ||
157 | if (len & 0x1ff) { | |
158 | printf("length argument %" PRId64 | |
159 | " is not sector aligned\n", len); | |
160 | goto fail; | |
161 | } | |
162 | ||
163 | sizes[i] = len; | |
164 | count += len; | |
165 | } | |
166 | ||
167 | qemu_iovec_init(qiov, nr_iov); | |
168 | ||
169 | buf = p = qemu_io_alloc(count, pattern); | |
170 | ||
171 | for (i = 0; i < nr_iov; i++) { | |
172 | qemu_iovec_add(qiov, p, sizes[i]); | |
173 | p += sizes[i]; | |
174 | } | |
175 | ||
176 | fail: | |
177 | g_free(sizes); | |
178 | return buf; | |
179 | } | |
180 | ||
181 | static int do_read(char *buf, int64_t offset, int count, int *total) | |
182 | { | |
183 | int ret; | |
184 | ||
185 | ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
186 | if (ret < 0) { | |
187 | return ret; | |
188 | } | |
189 | *total = count; | |
190 | return 1; | |
191 | } | |
192 | ||
193 | static int do_write(char *buf, int64_t offset, int count, int *total) | |
194 | { | |
195 | int ret; | |
196 | ||
197 | ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
198 | if (ret < 0) { | |
199 | return ret; | |
200 | } | |
201 | *total = count; | |
202 | return 1; | |
203 | } | |
204 | ||
205 | static int do_pread(char *buf, int64_t offset, int count, int *total) | |
206 | { | |
207 | *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); | |
208 | if (*total < 0) { | |
209 | return *total; | |
210 | } | |
211 | return 1; | |
212 | } | |
213 | ||
214 | static int do_pwrite(char *buf, int64_t offset, int count, int *total) | |
215 | { | |
216 | *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); | |
217 | if (*total < 0) { | |
218 | return *total; | |
219 | } | |
220 | return 1; | |
221 | } | |
222 | ||
223 | typedef struct { | |
224 | int64_t offset; | |
225 | int count; | |
226 | int *total; | |
227 | int ret; | |
228 | bool done; | |
229 | } CoWriteZeroes; | |
230 | ||
231 | static void coroutine_fn co_write_zeroes_entry(void *opaque) | |
232 | { | |
233 | CoWriteZeroes *data = opaque; | |
234 | ||
235 | data->ret = bdrv_co_write_zeroes(bs, data->offset / BDRV_SECTOR_SIZE, | |
236 | data->count / BDRV_SECTOR_SIZE); | |
237 | data->done = true; | |
238 | if (data->ret < 0) { | |
239 | *data->total = data->ret; | |
240 | return; | |
241 | } | |
242 | ||
243 | *data->total = data->count; | |
244 | } | |
245 | ||
246 | static int do_co_write_zeroes(int64_t offset, int count, int *total) | |
247 | { | |
248 | Coroutine *co; | |
249 | CoWriteZeroes data = { | |
250 | .offset = offset, | |
251 | .count = count, | |
252 | .total = total, | |
253 | .done = false, | |
254 | }; | |
255 | ||
256 | co = qemu_coroutine_create(co_write_zeroes_entry); | |
257 | qemu_coroutine_enter(co, &data); | |
258 | while (!data.done) { | |
259 | qemu_aio_wait(); | |
260 | } | |
261 | if (data.ret < 0) { | |
262 | return data.ret; | |
263 | } else { | |
264 | return 1; | |
265 | } | |
266 | } | |
267 | ||
268 | static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) | |
269 | { | |
270 | *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); | |
271 | if (*total < 0) { | |
272 | return *total; | |
273 | } | |
274 | return 1; | |
275 | } | |
276 | ||
277 | static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) | |
278 | { | |
279 | *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); | |
280 | if (*total < 0) { | |
281 | return *total; | |
282 | } | |
283 | return 1; | |
284 | } | |
285 | ||
286 | #define NOT_DONE 0x7fffffff | |
287 | static void aio_rw_done(void *opaque, int ret) | |
288 | { | |
289 | *(int *)opaque = ret; | |
290 | } | |
291 | ||
292 | static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) | |
293 | { | |
294 | int async_ret = NOT_DONE; | |
295 | ||
296 | bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, | |
297 | aio_rw_done, &async_ret); | |
298 | while (async_ret == NOT_DONE) { | |
299 | main_loop_wait(false); | |
300 | } | |
301 | ||
302 | *total = qiov->size; | |
303 | return async_ret < 0 ? async_ret : 1; | |
304 | } | |
305 | ||
306 | static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) | |
307 | { | |
308 | int async_ret = NOT_DONE; | |
309 | ||
310 | bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, | |
311 | aio_rw_done, &async_ret); | |
312 | while (async_ret == NOT_DONE) { | |
313 | main_loop_wait(false); | |
314 | } | |
315 | ||
316 | *total = qiov->size; | |
317 | return async_ret < 0 ? async_ret : 1; | |
318 | } | |
319 | ||
320 | struct multiwrite_async_ret { | |
321 | int num_done; | |
322 | int error; | |
323 | }; | |
324 | ||
325 | static void multiwrite_cb(void *opaque, int ret) | |
326 | { | |
327 | struct multiwrite_async_ret *async_ret = opaque; | |
328 | ||
329 | async_ret->num_done++; | |
330 | if (ret < 0) { | |
331 | async_ret->error = ret; | |
332 | } | |
333 | } | |
334 | ||
335 | static int do_aio_multiwrite(BlockRequest* reqs, int num_reqs, int *total) | |
336 | { | |
337 | int i, ret; | |
338 | struct multiwrite_async_ret async_ret = { | |
339 | .num_done = 0, | |
340 | .error = 0, | |
341 | }; | |
342 | ||
343 | *total = 0; | |
344 | for (i = 0; i < num_reqs; i++) { | |
345 | reqs[i].cb = multiwrite_cb; | |
346 | reqs[i].opaque = &async_ret; | |
347 | *total += reqs[i].qiov->size; | |
348 | } | |
349 | ||
350 | ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); | |
351 | if (ret < 0) { | |
352 | return ret; | |
353 | } | |
354 | ||
355 | while (async_ret.num_done < num_reqs) { | |
356 | main_loop_wait(false); | |
357 | } | |
358 | ||
359 | return async_ret.error < 0 ? async_ret.error : 1; | |
360 | } | |
361 | ||
362 | static void read_help(void) | |
363 | { | |
364 | printf( | |
365 | "\n" | |
366 | " reads a range of bytes from the given offset\n" | |
367 | "\n" | |
368 | " Example:\n" | |
369 | " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" | |
370 | "\n" | |
371 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
372 | " standard output stream (with -v option) for subsequent inspection.\n" | |
373 | " -b, -- read from the VM state rather than the virtual disk\n" | |
374 | " -C, -- report statistics in a machine parsable format\n" | |
375 | " -l, -- length for pattern verification (only with -P)\n" | |
376 | " -p, -- use bdrv_pread to read the file\n" | |
377 | " -P, -- use a pattern to verify read data\n" | |
378 | " -q, -- quiet mode, do not show I/O statistics\n" | |
379 | " -s, -- start offset for pattern verification (only with -P)\n" | |
380 | " -v, -- dump buffer to standard output\n" | |
381 | "\n"); | |
382 | } | |
383 | ||
384 | static int read_f(int argc, char **argv); | |
385 | ||
386 | static const cmdinfo_t read_cmd = { | |
387 | .name = "read", | |
388 | .altname = "r", | |
389 | .cfunc = read_f, | |
390 | .argmin = 2, | |
391 | .argmax = -1, | |
392 | .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len", | |
393 | .oneline = "reads a number of bytes at a specified offset", | |
394 | .help = read_help, | |
395 | }; | |
396 | ||
397 | static int read_f(int argc, char **argv) | |
398 | { | |
399 | struct timeval t1, t2; | |
400 | int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; | |
401 | int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; | |
402 | int c, cnt; | |
403 | char *buf; | |
404 | int64_t offset; | |
405 | int count; | |
406 | /* Some compilers get confused and warn if this is not initialized. */ | |
407 | int total = 0; | |
408 | int pattern = 0, pattern_offset = 0, pattern_count = 0; | |
409 | ||
410 | while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { | |
411 | switch (c) { | |
412 | case 'b': | |
413 | bflag = 1; | |
414 | break; | |
415 | case 'C': | |
416 | Cflag = 1; | |
417 | break; | |
418 | case 'l': | |
419 | lflag = 1; | |
420 | pattern_count = cvtnum(optarg); | |
421 | if (pattern_count < 0) { | |
422 | printf("non-numeric length argument -- %s\n", optarg); | |
423 | return 0; | |
424 | } | |
425 | break; | |
426 | case 'p': | |
427 | pflag = 1; | |
428 | break; | |
429 | case 'P': | |
430 | Pflag = 1; | |
431 | pattern = parse_pattern(optarg); | |
432 | if (pattern < 0) { | |
433 | return 0; | |
434 | } | |
435 | break; | |
436 | case 'q': | |
437 | qflag = 1; | |
438 | break; | |
439 | case 's': | |
440 | sflag = 1; | |
441 | pattern_offset = cvtnum(optarg); | |
442 | if (pattern_offset < 0) { | |
443 | printf("non-numeric length argument -- %s\n", optarg); | |
444 | return 0; | |
445 | } | |
446 | break; | |
447 | case 'v': | |
448 | vflag = 1; | |
449 | break; | |
450 | default: | |
451 | return command_usage(&read_cmd); | |
452 | } | |
453 | } | |
454 | ||
455 | if (optind != argc - 2) { | |
456 | return command_usage(&read_cmd); | |
457 | } | |
458 | ||
459 | if (bflag && pflag) { | |
460 | printf("-b and -p cannot be specified at the same time\n"); | |
461 | return 0; | |
462 | } | |
463 | ||
464 | offset = cvtnum(argv[optind]); | |
465 | if (offset < 0) { | |
466 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | optind++; | |
471 | count = cvtnum(argv[optind]); | |
472 | if (count < 0) { | |
473 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
474 | return 0; | |
475 | } | |
476 | ||
477 | if (!Pflag && (lflag || sflag)) { | |
478 | return command_usage(&read_cmd); | |
479 | } | |
480 | ||
481 | if (!lflag) { | |
482 | pattern_count = count - pattern_offset; | |
483 | } | |
484 | ||
485 | if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { | |
486 | printf("pattern verification range exceeds end of read data\n"); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | if (!pflag) { | |
491 | if (offset & 0x1ff) { | |
492 | printf("offset %" PRId64 " is not sector aligned\n", | |
493 | offset); | |
494 | return 0; | |
495 | } | |
496 | if (count & 0x1ff) { | |
497 | printf("count %d is not sector aligned\n", | |
498 | count); | |
499 | return 0; | |
500 | } | |
501 | } | |
502 | ||
503 | buf = qemu_io_alloc(count, 0xab); | |
504 | ||
505 | gettimeofday(&t1, NULL); | |
506 | if (pflag) { | |
507 | cnt = do_pread(buf, offset, count, &total); | |
508 | } else if (bflag) { | |
509 | cnt = do_load_vmstate(buf, offset, count, &total); | |
510 | } else { | |
511 | cnt = do_read(buf, offset, count, &total); | |
512 | } | |
513 | gettimeofday(&t2, NULL); | |
514 | ||
515 | if (cnt < 0) { | |
516 | printf("read failed: %s\n", strerror(-cnt)); | |
517 | goto out; | |
518 | } | |
519 | ||
520 | if (Pflag) { | |
521 | void *cmp_buf = g_malloc(pattern_count); | |
522 | memset(cmp_buf, pattern, pattern_count); | |
523 | if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { | |
524 | printf("Pattern verification failed at offset %" | |
525 | PRId64 ", %d bytes\n", | |
526 | offset + pattern_offset, pattern_count); | |
527 | } | |
528 | g_free(cmp_buf); | |
529 | } | |
530 | ||
531 | if (qflag) { | |
532 | goto out; | |
533 | } | |
534 | ||
535 | if (vflag) { | |
536 | dump_buffer(buf, offset, count); | |
537 | } | |
538 | ||
539 | /* Finally, report back -- -C gives a parsable format */ | |
540 | t2 = tsub(t2, t1); | |
541 | print_report("read", &t2, offset, count, total, cnt, Cflag); | |
542 | ||
543 | out: | |
544 | qemu_io_free(buf); | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | static void readv_help(void) | |
550 | { | |
551 | printf( | |
552 | "\n" | |
553 | " reads a range of bytes from the given offset into multiple buffers\n" | |
554 | "\n" | |
555 | " Example:\n" | |
556 | " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
557 | "\n" | |
558 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
559 | " standard output stream (with -v option) for subsequent inspection.\n" | |
560 | " Uses multiple iovec buffers if more than one byte range is specified.\n" | |
561 | " -C, -- report statistics in a machine parsable format\n" | |
562 | " -P, -- use a pattern to verify read data\n" | |
563 | " -v, -- dump buffer to standard output\n" | |
564 | " -q, -- quiet mode, do not show I/O statistics\n" | |
565 | "\n"); | |
566 | } | |
567 | ||
568 | static int readv_f(int argc, char **argv); | |
569 | ||
570 | static const cmdinfo_t readv_cmd = { | |
571 | .name = "readv", | |
572 | .cfunc = readv_f, | |
573 | .argmin = 2, | |
574 | .argmax = -1, | |
575 | .args = "[-Cqv] [-P pattern ] off len [len..]", | |
576 | .oneline = "reads a number of bytes at a specified offset", | |
577 | .help = readv_help, | |
578 | }; | |
579 | ||
580 | static int readv_f(int argc, char **argv) | |
581 | { | |
582 | struct timeval t1, t2; | |
583 | int Cflag = 0, qflag = 0, vflag = 0; | |
584 | int c, cnt; | |
585 | char *buf; | |
586 | int64_t offset; | |
587 | /* Some compilers get confused and warn if this is not initialized. */ | |
588 | int total = 0; | |
589 | int nr_iov; | |
590 | QEMUIOVector qiov; | |
591 | int pattern = 0; | |
592 | int Pflag = 0; | |
593 | ||
594 | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { | |
595 | switch (c) { | |
596 | case 'C': | |
597 | Cflag = 1; | |
598 | break; | |
599 | case 'P': | |
600 | Pflag = 1; | |
601 | pattern = parse_pattern(optarg); | |
602 | if (pattern < 0) { | |
603 | return 0; | |
604 | } | |
605 | break; | |
606 | case 'q': | |
607 | qflag = 1; | |
608 | break; | |
609 | case 'v': | |
610 | vflag = 1; | |
611 | break; | |
612 | default: | |
613 | return command_usage(&readv_cmd); | |
614 | } | |
615 | } | |
616 | ||
617 | if (optind > argc - 2) { | |
618 | return command_usage(&readv_cmd); | |
619 | } | |
620 | ||
621 | ||
622 | offset = cvtnum(argv[optind]); | |
623 | if (offset < 0) { | |
624 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
625 | return 0; | |
626 | } | |
627 | optind++; | |
628 | ||
629 | if (offset & 0x1ff) { | |
630 | printf("offset %" PRId64 " is not sector aligned\n", | |
631 | offset); | |
632 | return 0; | |
633 | } | |
634 | ||
635 | nr_iov = argc - optind; | |
636 | buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab); | |
637 | if (buf == NULL) { | |
638 | return 0; | |
639 | } | |
640 | ||
641 | gettimeofday(&t1, NULL); | |
642 | cnt = do_aio_readv(&qiov, offset, &total); | |
643 | gettimeofday(&t2, NULL); | |
644 | ||
645 | if (cnt < 0) { | |
646 | printf("readv failed: %s\n", strerror(-cnt)); | |
647 | goto out; | |
648 | } | |
649 | ||
650 | if (Pflag) { | |
651 | void *cmp_buf = g_malloc(qiov.size); | |
652 | memset(cmp_buf, pattern, qiov.size); | |
653 | if (memcmp(buf, cmp_buf, qiov.size)) { | |
654 | printf("Pattern verification failed at offset %" | |
655 | PRId64 ", %zd bytes\n", offset, qiov.size); | |
656 | } | |
657 | g_free(cmp_buf); | |
658 | } | |
659 | ||
660 | if (qflag) { | |
661 | goto out; | |
662 | } | |
663 | ||
664 | if (vflag) { | |
665 | dump_buffer(buf, offset, qiov.size); | |
666 | } | |
667 | ||
668 | /* Finally, report back -- -C gives a parsable format */ | |
669 | t2 = tsub(t2, t1); | |
670 | print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); | |
671 | ||
672 | out: | |
673 | qemu_iovec_destroy(&qiov); | |
674 | qemu_io_free(buf); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static void write_help(void) | |
679 | { | |
680 | printf( | |
681 | "\n" | |
682 | " writes a range of bytes from the given offset\n" | |
683 | "\n" | |
684 | " Example:\n" | |
685 | " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" | |
686 | "\n" | |
687 | " Writes into a segment of the currently open file, using a buffer\n" | |
688 | " filled with a set pattern (0xcdcdcdcd).\n" | |
689 | " -b, -- write to the VM state rather than the virtual disk\n" | |
690 | " -p, -- use bdrv_pwrite to write the file\n" | |
691 | " -P, -- use different pattern to fill file\n" | |
692 | " -C, -- report statistics in a machine parsable format\n" | |
693 | " -q, -- quiet mode, do not show I/O statistics\n" | |
694 | " -z, -- write zeroes using bdrv_co_write_zeroes\n" | |
695 | "\n"); | |
696 | } | |
697 | ||
698 | static int write_f(int argc, char **argv); | |
699 | ||
700 | static const cmdinfo_t write_cmd = { | |
701 | .name = "write", | |
702 | .altname = "w", | |
703 | .cfunc = write_f, | |
704 | .argmin = 2, | |
705 | .argmax = -1, | |
706 | .args = "[-bCpqz] [-P pattern ] off len", | |
707 | .oneline = "writes a number of bytes at a specified offset", | |
708 | .help = write_help, | |
709 | }; | |
710 | ||
711 | static int write_f(int argc, char **argv) | |
712 | { | |
713 | struct timeval t1, t2; | |
714 | int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; | |
715 | int c, cnt; | |
716 | char *buf = NULL; | |
717 | int64_t offset; | |
718 | int count; | |
719 | /* Some compilers get confused and warn if this is not initialized. */ | |
720 | int total = 0; | |
721 | int pattern = 0xcd; | |
722 | ||
723 | while ((c = getopt(argc, argv, "bCpP:qz")) != EOF) { | |
724 | switch (c) { | |
725 | case 'b': | |
726 | bflag = 1; | |
727 | break; | |
728 | case 'C': | |
729 | Cflag = 1; | |
730 | break; | |
731 | case 'p': | |
732 | pflag = 1; | |
733 | break; | |
734 | case 'P': | |
735 | Pflag = 1; | |
736 | pattern = parse_pattern(optarg); | |
737 | if (pattern < 0) { | |
738 | return 0; | |
739 | } | |
740 | break; | |
741 | case 'q': | |
742 | qflag = 1; | |
743 | break; | |
744 | case 'z': | |
745 | zflag = 1; | |
746 | break; | |
747 | default: | |
748 | return command_usage(&write_cmd); | |
749 | } | |
750 | } | |
751 | ||
752 | if (optind != argc - 2) { | |
753 | return command_usage(&write_cmd); | |
754 | } | |
755 | ||
756 | if (bflag + pflag + zflag > 1) { | |
757 | printf("-b, -p, or -z cannot be specified at the same time\n"); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | if (zflag && Pflag) { | |
762 | printf("-z and -P cannot be specified at the same time\n"); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | offset = cvtnum(argv[optind]); | |
767 | if (offset < 0) { | |
768 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
769 | return 0; | |
770 | } | |
771 | ||
772 | optind++; | |
773 | count = cvtnum(argv[optind]); | |
774 | if (count < 0) { | |
775 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
776 | return 0; | |
777 | } | |
778 | ||
779 | if (!pflag) { | |
780 | if (offset & 0x1ff) { | |
781 | printf("offset %" PRId64 " is not sector aligned\n", | |
782 | offset); | |
783 | return 0; | |
784 | } | |
785 | ||
786 | if (count & 0x1ff) { | |
787 | printf("count %d is not sector aligned\n", | |
788 | count); | |
789 | return 0; | |
790 | } | |
791 | } | |
792 | ||
793 | if (!zflag) { | |
794 | buf = qemu_io_alloc(count, pattern); | |
795 | } | |
796 | ||
797 | gettimeofday(&t1, NULL); | |
798 | if (pflag) { | |
799 | cnt = do_pwrite(buf, offset, count, &total); | |
800 | } else if (bflag) { | |
801 | cnt = do_save_vmstate(buf, offset, count, &total); | |
802 | } else if (zflag) { | |
803 | cnt = do_co_write_zeroes(offset, count, &total); | |
804 | } else { | |
805 | cnt = do_write(buf, offset, count, &total); | |
806 | } | |
807 | gettimeofday(&t2, NULL); | |
808 | ||
809 | if (cnt < 0) { | |
810 | printf("write failed: %s\n", strerror(-cnt)); | |
811 | goto out; | |
812 | } | |
813 | ||
814 | if (qflag) { | |
815 | goto out; | |
816 | } | |
817 | ||
818 | /* Finally, report back -- -C gives a parsable format */ | |
819 | t2 = tsub(t2, t1); | |
820 | print_report("wrote", &t2, offset, count, total, cnt, Cflag); | |
821 | ||
822 | out: | |
823 | if (!zflag) { | |
824 | qemu_io_free(buf); | |
825 | } | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | static void | |
831 | writev_help(void) | |
832 | { | |
833 | printf( | |
834 | "\n" | |
835 | " writes a range of bytes from the given offset source from multiple buffers\n" | |
836 | "\n" | |
837 | " Example:\n" | |
838 | " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" | |
839 | "\n" | |
840 | " Writes into a segment of the currently open file, using a buffer\n" | |
841 | " filled with a set pattern (0xcdcdcdcd).\n" | |
842 | " -P, -- use different pattern to fill file\n" | |
843 | " -C, -- report statistics in a machine parsable format\n" | |
844 | " -q, -- quiet mode, do not show I/O statistics\n" | |
845 | "\n"); | |
846 | } | |
847 | ||
848 | static int writev_f(int argc, char **argv); | |
849 | ||
850 | static const cmdinfo_t writev_cmd = { | |
851 | .name = "writev", | |
852 | .cfunc = writev_f, | |
853 | .argmin = 2, | |
854 | .argmax = -1, | |
855 | .args = "[-Cq] [-P pattern ] off len [len..]", | |
856 | .oneline = "writes a number of bytes at a specified offset", | |
857 | .help = writev_help, | |
858 | }; | |
859 | ||
860 | static int writev_f(int argc, char **argv) | |
861 | { | |
862 | struct timeval t1, t2; | |
863 | int Cflag = 0, qflag = 0; | |
864 | int c, cnt; | |
865 | char *buf; | |
866 | int64_t offset; | |
867 | /* Some compilers get confused and warn if this is not initialized. */ | |
868 | int total = 0; | |
869 | int nr_iov; | |
870 | int pattern = 0xcd; | |
871 | QEMUIOVector qiov; | |
872 | ||
873 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
874 | switch (c) { | |
875 | case 'C': | |
876 | Cflag = 1; | |
877 | break; | |
878 | case 'q': | |
879 | qflag = 1; | |
880 | break; | |
881 | case 'P': | |
882 | pattern = parse_pattern(optarg); | |
883 | if (pattern < 0) { | |
884 | return 0; | |
885 | } | |
886 | break; | |
887 | default: | |
888 | return command_usage(&writev_cmd); | |
889 | } | |
890 | } | |
891 | ||
892 | if (optind > argc - 2) { | |
893 | return command_usage(&writev_cmd); | |
894 | } | |
895 | ||
896 | offset = cvtnum(argv[optind]); | |
897 | if (offset < 0) { | |
898 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
899 | return 0; | |
900 | } | |
901 | optind++; | |
902 | ||
903 | if (offset & 0x1ff) { | |
904 | printf("offset %" PRId64 " is not sector aligned\n", | |
905 | offset); | |
906 | return 0; | |
907 | } | |
908 | ||
909 | nr_iov = argc - optind; | |
910 | buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); | |
911 | if (buf == NULL) { | |
912 | return 0; | |
913 | } | |
914 | ||
915 | gettimeofday(&t1, NULL); | |
916 | cnt = do_aio_writev(&qiov, offset, &total); | |
917 | gettimeofday(&t2, NULL); | |
918 | ||
919 | if (cnt < 0) { | |
920 | printf("writev failed: %s\n", strerror(-cnt)); | |
921 | goto out; | |
922 | } | |
923 | ||
924 | if (qflag) { | |
925 | goto out; | |
926 | } | |
927 | ||
928 | /* Finally, report back -- -C gives a parsable format */ | |
929 | t2 = tsub(t2, t1); | |
930 | print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); | |
931 | out: | |
932 | qemu_iovec_destroy(&qiov); | |
933 | qemu_io_free(buf); | |
934 | return 0; | |
935 | } | |
936 | ||
937 | static void multiwrite_help(void) | |
938 | { | |
939 | printf( | |
940 | "\n" | |
941 | " writes a range of bytes from the given offset source from multiple buffers,\n" | |
942 | " in a batch of requests that may be merged by qemu\n" | |
943 | "\n" | |
944 | " Example:\n" | |
945 | " 'multiwrite 512 1k 1k ; 4k 1k'\n" | |
946 | " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n" | |
947 | "\n" | |
948 | " Writes into a segment of the currently open file, using a buffer\n" | |
949 | " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n" | |
950 | " by one for each request contained in the multiwrite command.\n" | |
951 | " -P, -- use different pattern to fill file\n" | |
952 | " -C, -- report statistics in a machine parsable format\n" | |
953 | " -q, -- quiet mode, do not show I/O statistics\n" | |
954 | "\n"); | |
955 | } | |
956 | ||
957 | static int multiwrite_f(int argc, char **argv); | |
958 | ||
959 | static const cmdinfo_t multiwrite_cmd = { | |
960 | .name = "multiwrite", | |
961 | .cfunc = multiwrite_f, | |
962 | .argmin = 2, | |
963 | .argmax = -1, | |
964 | .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]", | |
965 | .oneline = "issues multiple write requests at once", | |
966 | .help = multiwrite_help, | |
967 | }; | |
968 | ||
969 | static int multiwrite_f(int argc, char **argv) | |
970 | { | |
971 | struct timeval t1, t2; | |
972 | int Cflag = 0, qflag = 0; | |
973 | int c, cnt; | |
974 | char **buf; | |
975 | int64_t offset, first_offset = 0; | |
976 | /* Some compilers get confused and warn if this is not initialized. */ | |
977 | int total = 0; | |
978 | int nr_iov; | |
979 | int nr_reqs; | |
980 | int pattern = 0xcd; | |
981 | QEMUIOVector *qiovs; | |
982 | int i; | |
983 | BlockRequest *reqs; | |
984 | ||
985 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
986 | switch (c) { | |
987 | case 'C': | |
988 | Cflag = 1; | |
989 | break; | |
990 | case 'q': | |
991 | qflag = 1; | |
992 | break; | |
993 | case 'P': | |
994 | pattern = parse_pattern(optarg); | |
995 | if (pattern < 0) { | |
996 | return 0; | |
997 | } | |
998 | break; | |
999 | default: | |
1000 | return command_usage(&writev_cmd); | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | if (optind > argc - 2) { | |
1005 | return command_usage(&writev_cmd); | |
1006 | } | |
1007 | ||
1008 | nr_reqs = 1; | |
1009 | for (i = optind; i < argc; i++) { | |
1010 | if (!strcmp(argv[i], ";")) { | |
1011 | nr_reqs++; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | reqs = g_malloc0(nr_reqs * sizeof(*reqs)); | |
1016 | buf = g_malloc0(nr_reqs * sizeof(*buf)); | |
1017 | qiovs = g_malloc(nr_reqs * sizeof(*qiovs)); | |
1018 | ||
1019 | for (i = 0; i < nr_reqs && optind < argc; i++) { | |
1020 | int j; | |
1021 | ||
1022 | /* Read the offset of the request */ | |
1023 | offset = cvtnum(argv[optind]); | |
1024 | if (offset < 0) { | |
1025 | printf("non-numeric offset argument -- %s\n", argv[optind]); | |
1026 | goto out; | |
1027 | } | |
1028 | optind++; | |
1029 | ||
1030 | if (offset & 0x1ff) { | |
1031 | printf("offset %lld is not sector aligned\n", | |
1032 | (long long)offset); | |
1033 | goto out; | |
1034 | } | |
1035 | ||
1036 | if (i == 0) { | |
1037 | first_offset = offset; | |
1038 | } | |
1039 | ||
1040 | /* Read lengths for qiov entries */ | |
1041 | for (j = optind; j < argc; j++) { | |
1042 | if (!strcmp(argv[j], ";")) { | |
1043 | break; | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | nr_iov = j - optind; | |
1048 | ||
1049 | /* Build request */ | |
1050 | buf[i] = create_iovec(&qiovs[i], &argv[optind], nr_iov, pattern); | |
1051 | if (buf[i] == NULL) { | |
1052 | goto out; | |
1053 | } | |
1054 | ||
1055 | reqs[i].qiov = &qiovs[i]; | |
1056 | reqs[i].sector = offset >> 9; | |
1057 | reqs[i].nb_sectors = reqs[i].qiov->size >> 9; | |
1058 | ||
1059 | optind = j + 1; | |
1060 | ||
1061 | pattern++; | |
1062 | } | |
1063 | ||
1064 | /* If there were empty requests at the end, ignore them */ | |
1065 | nr_reqs = i; | |
1066 | ||
1067 | gettimeofday(&t1, NULL); | |
1068 | cnt = do_aio_multiwrite(reqs, nr_reqs, &total); | |
1069 | gettimeofday(&t2, NULL); | |
1070 | ||
1071 | if (cnt < 0) { | |
1072 | printf("aio_multiwrite failed: %s\n", strerror(-cnt)); | |
1073 | goto out; | |
1074 | } | |
1075 | ||
1076 | if (qflag) { | |
1077 | goto out; | |
1078 | } | |
1079 | ||
1080 | /* Finally, report back -- -C gives a parsable format */ | |
1081 | t2 = tsub(t2, t1); | |
1082 | print_report("wrote", &t2, first_offset, total, total, cnt, Cflag); | |
1083 | out: | |
1084 | for (i = 0; i < nr_reqs; i++) { | |
1085 | qemu_io_free(buf[i]); | |
1086 | if (reqs[i].qiov != NULL) { | |
1087 | qemu_iovec_destroy(&qiovs[i]); | |
1088 | } | |
1089 | } | |
1090 | g_free(buf); | |
1091 | g_free(reqs); | |
1092 | g_free(qiovs); | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | struct aio_ctx { | |
1097 | QEMUIOVector qiov; | |
1098 | int64_t offset; | |
1099 | char *buf; | |
1100 | int qflag; | |
1101 | int vflag; | |
1102 | int Cflag; | |
1103 | int Pflag; | |
1104 | int pattern; | |
1105 | struct timeval t1; | |
1106 | }; | |
1107 | ||
1108 | static void aio_write_done(void *opaque, int ret) | |
1109 | { | |
1110 | struct aio_ctx *ctx = opaque; | |
1111 | struct timeval t2; | |
1112 | ||
1113 | gettimeofday(&t2, NULL); | |
1114 | ||
1115 | ||
1116 | if (ret < 0) { | |
1117 | printf("aio_write failed: %s\n", strerror(-ret)); | |
1118 | goto out; | |
1119 | } | |
1120 | ||
1121 | if (ctx->qflag) { | |
1122 | goto out; | |
1123 | } | |
1124 | ||
1125 | /* Finally, report back -- -C gives a parsable format */ | |
1126 | t2 = tsub(t2, ctx->t1); | |
1127 | print_report("wrote", &t2, ctx->offset, ctx->qiov.size, | |
1128 | ctx->qiov.size, 1, ctx->Cflag); | |
1129 | out: | |
1130 | qemu_io_free(ctx->buf); | |
1131 | qemu_iovec_destroy(&ctx->qiov); | |
1132 | g_free(ctx); | |
1133 | } | |
1134 | ||
1135 | static void aio_read_done(void *opaque, int ret) | |
1136 | { | |
1137 | struct aio_ctx *ctx = opaque; | |
1138 | struct timeval t2; | |
1139 | ||
1140 | gettimeofday(&t2, NULL); | |
1141 | ||
1142 | if (ret < 0) { | |
1143 | printf("readv failed: %s\n", strerror(-ret)); | |
1144 | goto out; | |
1145 | } | |
1146 | ||
1147 | if (ctx->Pflag) { | |
1148 | void *cmp_buf = g_malloc(ctx->qiov.size); | |
1149 | ||
1150 | memset(cmp_buf, ctx->pattern, ctx->qiov.size); | |
1151 | if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { | |
1152 | printf("Pattern verification failed at offset %" | |
1153 | PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); | |
1154 | } | |
1155 | g_free(cmp_buf); | |
1156 | } | |
1157 | ||
1158 | if (ctx->qflag) { | |
1159 | goto out; | |
1160 | } | |
1161 | ||
1162 | if (ctx->vflag) { | |
1163 | dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); | |
1164 | } | |
1165 | ||
1166 | /* Finally, report back -- -C gives a parsable format */ | |
1167 | t2 = tsub(t2, ctx->t1); | |
1168 | print_report("read", &t2, ctx->offset, ctx->qiov.size, | |
1169 | ctx->qiov.size, 1, ctx->Cflag); | |
1170 | out: | |
1171 | qemu_io_free(ctx->buf); | |
1172 | qemu_iovec_destroy(&ctx->qiov); | |
1173 | g_free(ctx); | |
1174 | } | |
1175 | ||
1176 | static void aio_read_help(void) | |
1177 | { | |
1178 | printf( | |
1179 | "\n" | |
1180 | " asynchronously reads a range of bytes from the given offset\n" | |
1181 | "\n" | |
1182 | " Example:\n" | |
1183 | " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
1184 | "\n" | |
1185 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
1186 | " standard output stream (with -v option) for subsequent inspection.\n" | |
1187 | " The read is performed asynchronously and the aio_flush command must be\n" | |
1188 | " used to ensure all outstanding aio requests have been completed.\n" | |
1189 | " -C, -- report statistics in a machine parsable format\n" | |
1190 | " -P, -- use a pattern to verify read data\n" | |
1191 | " -v, -- dump buffer to standard output\n" | |
1192 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1193 | "\n"); | |
1194 | } | |
1195 | ||
1196 | static int aio_read_f(int argc, char **argv); | |
1197 | ||
1198 | static const cmdinfo_t aio_read_cmd = { | |
1199 | .name = "aio_read", | |
1200 | .cfunc = aio_read_f, | |
1201 | .argmin = 2, | |
1202 | .argmax = -1, | |
1203 | .args = "[-Cqv] [-P pattern ] off len [len..]", | |
1204 | .oneline = "asynchronously reads a number of bytes", | |
1205 | .help = aio_read_help, | |
1206 | }; | |
1207 | ||
1208 | static int aio_read_f(int argc, char **argv) | |
1209 | { | |
1210 | int nr_iov, c; | |
1211 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); | |
1212 | ||
1213 | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { | |
1214 | switch (c) { | |
1215 | case 'C': | |
1216 | ctx->Cflag = 1; | |
1217 | break; | |
1218 | case 'P': | |
1219 | ctx->Pflag = 1; | |
1220 | ctx->pattern = parse_pattern(optarg); | |
1221 | if (ctx->pattern < 0) { | |
1222 | g_free(ctx); | |
1223 | return 0; | |
1224 | } | |
1225 | break; | |
1226 | case 'q': | |
1227 | ctx->qflag = 1; | |
1228 | break; | |
1229 | case 'v': | |
1230 | ctx->vflag = 1; | |
1231 | break; | |
1232 | default: | |
1233 | g_free(ctx); | |
1234 | return command_usage(&aio_read_cmd); | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | if (optind > argc - 2) { | |
1239 | g_free(ctx); | |
1240 | return command_usage(&aio_read_cmd); | |
1241 | } | |
1242 | ||
1243 | ctx->offset = cvtnum(argv[optind]); | |
1244 | if (ctx->offset < 0) { | |
1245 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1246 | g_free(ctx); | |
1247 | return 0; | |
1248 | } | |
1249 | optind++; | |
1250 | ||
1251 | if (ctx->offset & 0x1ff) { | |
1252 | printf("offset %" PRId64 " is not sector aligned\n", | |
1253 | ctx->offset); | |
1254 | g_free(ctx); | |
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | nr_iov = argc - optind; | |
1259 | ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab); | |
1260 | if (ctx->buf == NULL) { | |
1261 | g_free(ctx); | |
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | gettimeofday(&ctx->t1, NULL); | |
1266 | bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov, | |
1267 | ctx->qiov.size >> 9, aio_read_done, ctx); | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | static void aio_write_help(void) | |
1272 | { | |
1273 | printf( | |
1274 | "\n" | |
1275 | " asynchronously writes a range of bytes from the given offset source\n" | |
1276 | " from multiple buffers\n" | |
1277 | "\n" | |
1278 | " Example:\n" | |
1279 | " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" | |
1280 | "\n" | |
1281 | " Writes into a segment of the currently open file, using a buffer\n" | |
1282 | " filled with a set pattern (0xcdcdcdcd).\n" | |
1283 | " The write is performed asynchronously and the aio_flush command must be\n" | |
1284 | " used to ensure all outstanding aio requests have been completed.\n" | |
1285 | " -P, -- use different pattern to fill file\n" | |
1286 | " -C, -- report statistics in a machine parsable format\n" | |
1287 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1288 | "\n"); | |
1289 | } | |
1290 | ||
1291 | static int aio_write_f(int argc, char **argv); | |
1292 | ||
1293 | static const cmdinfo_t aio_write_cmd = { | |
1294 | .name = "aio_write", | |
1295 | .cfunc = aio_write_f, | |
1296 | .argmin = 2, | |
1297 | .argmax = -1, | |
1298 | .args = "[-Cq] [-P pattern ] off len [len..]", | |
1299 | .oneline = "asynchronously writes a number of bytes", | |
1300 | .help = aio_write_help, | |
1301 | }; | |
1302 | ||
1303 | static int aio_write_f(int argc, char **argv) | |
1304 | { | |
1305 | int nr_iov, c; | |
1306 | int pattern = 0xcd; | |
1307 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); | |
1308 | ||
1309 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
1310 | switch (c) { | |
1311 | case 'C': | |
1312 | ctx->Cflag = 1; | |
1313 | break; | |
1314 | case 'q': | |
1315 | ctx->qflag = 1; | |
1316 | break; | |
1317 | case 'P': | |
1318 | pattern = parse_pattern(optarg); | |
1319 | if (pattern < 0) { | |
1320 | g_free(ctx); | |
1321 | return 0; | |
1322 | } | |
1323 | break; | |
1324 | default: | |
1325 | g_free(ctx); | |
1326 | return command_usage(&aio_write_cmd); | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | if (optind > argc - 2) { | |
1331 | g_free(ctx); | |
1332 | return command_usage(&aio_write_cmd); | |
1333 | } | |
1334 | ||
1335 | ctx->offset = cvtnum(argv[optind]); | |
1336 | if (ctx->offset < 0) { | |
1337 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1338 | g_free(ctx); | |
1339 | return 0; | |
1340 | } | |
1341 | optind++; | |
1342 | ||
1343 | if (ctx->offset & 0x1ff) { | |
1344 | printf("offset %" PRId64 " is not sector aligned\n", | |
1345 | ctx->offset); | |
1346 | g_free(ctx); | |
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | nr_iov = argc - optind; | |
1351 | ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); | |
1352 | if (ctx->buf == NULL) { | |
1353 | g_free(ctx); | |
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | gettimeofday(&ctx->t1, NULL); | |
1358 | bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov, | |
1359 | ctx->qiov.size >> 9, aio_write_done, ctx); | |
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | static int aio_flush_f(int argc, char **argv) | |
1364 | { | |
1365 | qemu_aio_flush(); | |
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | static const cmdinfo_t aio_flush_cmd = { | |
1370 | .name = "aio_flush", | |
1371 | .cfunc = aio_flush_f, | |
1372 | .oneline = "completes all outstanding aio requests" | |
1373 | }; | |
1374 | ||
1375 | static int flush_f(int argc, char **argv) | |
1376 | { | |
1377 | bdrv_flush(bs); | |
1378 | return 0; | |
1379 | } | |
1380 | ||
1381 | static const cmdinfo_t flush_cmd = { | |
1382 | .name = "flush", | |
1383 | .altname = "f", | |
1384 | .cfunc = flush_f, | |
1385 | .oneline = "flush all in-core file state to disk", | |
1386 | }; | |
1387 | ||
1388 | static int truncate_f(int argc, char **argv) | |
1389 | { | |
1390 | int64_t offset; | |
1391 | int ret; | |
1392 | ||
1393 | offset = cvtnum(argv[1]); | |
1394 | if (offset < 0) { | |
1395 | printf("non-numeric truncate argument -- %s\n", argv[1]); | |
1396 | return 0; | |
1397 | } | |
1398 | ||
1399 | ret = bdrv_truncate(bs, offset); | |
1400 | if (ret < 0) { | |
1401 | printf("truncate: %s\n", strerror(-ret)); | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | return 0; | |
1406 | } | |
1407 | ||
1408 | static const cmdinfo_t truncate_cmd = { | |
1409 | .name = "truncate", | |
1410 | .altname = "t", | |
1411 | .cfunc = truncate_f, | |
1412 | .argmin = 1, | |
1413 | .argmax = 1, | |
1414 | .args = "off", | |
1415 | .oneline = "truncates the current file at the given offset", | |
1416 | }; | |
1417 | ||
1418 | static int length_f(int argc, char **argv) | |
1419 | { | |
1420 | int64_t size; | |
1421 | char s1[64]; | |
1422 | ||
1423 | size = bdrv_getlength(bs); | |
1424 | if (size < 0) { | |
1425 | printf("getlength: %s\n", strerror(-size)); | |
1426 | return 0; | |
1427 | } | |
1428 | ||
1429 | cvtstr(size, s1, sizeof(s1)); | |
1430 | printf("%s\n", s1); | |
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | ||
1435 | static const cmdinfo_t length_cmd = { | |
1436 | .name = "length", | |
1437 | .altname = "l", | |
1438 | .cfunc = length_f, | |
1439 | .oneline = "gets the length of the current file", | |
1440 | }; | |
1441 | ||
1442 | ||
1443 | static int info_f(int argc, char **argv) | |
1444 | { | |
1445 | BlockDriverInfo bdi; | |
1446 | char s1[64], s2[64]; | |
1447 | int ret; | |
1448 | ||
1449 | if (bs->drv && bs->drv->format_name) { | |
1450 | printf("format name: %s\n", bs->drv->format_name); | |
1451 | } | |
1452 | if (bs->drv && bs->drv->protocol_name) { | |
1453 | printf("format name: %s\n", bs->drv->protocol_name); | |
1454 | } | |
1455 | ||
1456 | ret = bdrv_get_info(bs, &bdi); | |
1457 | if (ret) { | |
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | cvtstr(bdi.cluster_size, s1, sizeof(s1)); | |
1462 | cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); | |
1463 | ||
1464 | printf("cluster size: %s\n", s1); | |
1465 | printf("vm state offset: %s\n", s2); | |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | ||
1470 | ||
1471 | ||
1472 | static const cmdinfo_t info_cmd = { | |
1473 | .name = "info", | |
1474 | .altname = "i", | |
1475 | .cfunc = info_f, | |
1476 | .oneline = "prints information about the current file", | |
1477 | }; | |
1478 | ||
1479 | static void discard_help(void) | |
1480 | { | |
1481 | printf( | |
1482 | "\n" | |
1483 | " discards a range of bytes from the given offset\n" | |
1484 | "\n" | |
1485 | " Example:\n" | |
1486 | " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" | |
1487 | "\n" | |
1488 | " Discards a segment of the currently open file.\n" | |
1489 | " -C, -- report statistics in a machine parsable format\n" | |
1490 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1491 | "\n"); | |
1492 | } | |
1493 | ||
1494 | static int discard_f(int argc, char **argv); | |
1495 | ||
1496 | static const cmdinfo_t discard_cmd = { | |
1497 | .name = "discard", | |
1498 | .altname = "d", | |
1499 | .cfunc = discard_f, | |
1500 | .argmin = 2, | |
1501 | .argmax = -1, | |
1502 | .args = "[-Cq] off len", | |
1503 | .oneline = "discards a number of bytes at a specified offset", | |
1504 | .help = discard_help, | |
1505 | }; | |
1506 | ||
1507 | static int discard_f(int argc, char **argv) | |
1508 | { | |
1509 | struct timeval t1, t2; | |
1510 | int Cflag = 0, qflag = 0; | |
1511 | int c, ret; | |
1512 | int64_t offset; | |
1513 | int count; | |
1514 | ||
1515 | while ((c = getopt(argc, argv, "Cq")) != EOF) { | |
1516 | switch (c) { | |
1517 | case 'C': | |
1518 | Cflag = 1; | |
1519 | break; | |
1520 | case 'q': | |
1521 | qflag = 1; | |
1522 | break; | |
1523 | default: | |
1524 | return command_usage(&discard_cmd); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | if (optind != argc - 2) { | |
1529 | return command_usage(&discard_cmd); | |
1530 | } | |
1531 | ||
1532 | offset = cvtnum(argv[optind]); | |
1533 | if (offset < 0) { | |
1534 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | optind++; | |
1539 | count = cvtnum(argv[optind]); | |
1540 | if (count < 0) { | |
1541 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1542 | return 0; | |
1543 | } | |
1544 | ||
1545 | gettimeofday(&t1, NULL); | |
1546 | ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, | |
1547 | count >> BDRV_SECTOR_BITS); | |
1548 | gettimeofday(&t2, NULL); | |
1549 | ||
1550 | if (ret < 0) { | |
1551 | printf("discard failed: %s\n", strerror(-ret)); | |
1552 | goto out; | |
1553 | } | |
1554 | ||
1555 | /* Finally, report back -- -C gives a parsable format */ | |
1556 | if (!qflag) { | |
1557 | t2 = tsub(t2, t1); | |
1558 | print_report("discard", &t2, offset, count, count, 1, Cflag); | |
1559 | } | |
1560 | ||
1561 | out: | |
1562 | return 0; | |
1563 | } | |
1564 | ||
1565 | static int alloc_f(int argc, char **argv) | |
1566 | { | |
1567 | int64_t offset, sector_num; | |
1568 | int nb_sectors, remaining; | |
1569 | char s1[64]; | |
1570 | int num, sum_alloc; | |
1571 | int ret; | |
1572 | ||
1573 | offset = cvtnum(argv[1]); | |
1574 | if (offset & 0x1ff) { | |
1575 | printf("offset %" PRId64 " is not sector aligned\n", | |
1576 | offset); | |
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | if (argc == 3) { | |
1581 | nb_sectors = cvtnum(argv[2]); | |
1582 | } else { | |
1583 | nb_sectors = 1; | |
1584 | } | |
1585 | ||
1586 | remaining = nb_sectors; | |
1587 | sum_alloc = 0; | |
1588 | sector_num = offset >> 9; | |
1589 | while (remaining) { | |
1590 | ret = bdrv_is_allocated(bs, sector_num, remaining, &num); | |
1591 | sector_num += num; | |
1592 | remaining -= num; | |
1593 | if (ret) { | |
1594 | sum_alloc += num; | |
1595 | } | |
1596 | if (num == 0) { | |
1597 | nb_sectors -= remaining; | |
1598 | remaining = 0; | |
1599 | } | |
1600 | } | |
1601 | ||
1602 | cvtstr(offset, s1, sizeof(s1)); | |
1603 | ||
1604 | printf("%d/%d sectors allocated at offset %s\n", | |
1605 | sum_alloc, nb_sectors, s1); | |
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | static const cmdinfo_t alloc_cmd = { | |
1610 | .name = "alloc", | |
1611 | .altname = "a", | |
1612 | .argmin = 1, | |
1613 | .argmax = 2, | |
1614 | .cfunc = alloc_f, | |
1615 | .args = "off [sectors]", | |
1616 | .oneline = "checks if a sector is present in the file", | |
1617 | }; | |
1618 | ||
1619 | static int map_f(int argc, char **argv) | |
1620 | { | |
1621 | int64_t offset; | |
1622 | int64_t nb_sectors; | |
1623 | char s1[64]; | |
1624 | int num, num_checked; | |
1625 | int ret; | |
1626 | const char *retstr; | |
1627 | ||
1628 | offset = 0; | |
1629 | nb_sectors = bs->total_sectors; | |
1630 | ||
1631 | do { | |
1632 | num_checked = MIN(nb_sectors, INT_MAX); | |
1633 | ret = bdrv_is_allocated(bs, offset, num_checked, &num); | |
1634 | retstr = ret ? " allocated" : "not allocated"; | |
1635 | cvtstr(offset << 9ULL, s1, sizeof(s1)); | |
1636 | printf("[% 24" PRId64 "] % 8d/% 8d sectors %s at offset %s (%d)\n", | |
1637 | offset << 9ULL, num, num_checked, retstr, s1, ret); | |
1638 | ||
1639 | offset += num; | |
1640 | nb_sectors -= num; | |
1641 | } while (offset < bs->total_sectors); | |
1642 | ||
1643 | return 0; | |
1644 | } | |
1645 | ||
1646 | static const cmdinfo_t map_cmd = { | |
1647 | .name = "map", | |
1648 | .argmin = 0, | |
1649 | .argmax = 0, | |
1650 | .cfunc = map_f, | |
1651 | .args = "", | |
1652 | .oneline = "prints the allocated areas of a file", | |
1653 | }; | |
1654 | ||
1655 | static int abort_f(int argc, char **argv) | |
1656 | { | |
1657 | abort(); | |
1658 | } | |
1659 | ||
1660 | static const cmdinfo_t abort_cmd = { | |
1661 | .name = "abort", | |
1662 | .cfunc = abort_f, | |
1663 | .flags = CMD_NOFILE_OK, | |
1664 | .oneline = "simulate a program crash using abort(3)", | |
1665 | }; | |
1666 | ||
1667 | static int close_f(int argc, char **argv) | |
1668 | { | |
1669 | bdrv_delete(bs); | |
1670 | bs = NULL; | |
1671 | return 0; | |
1672 | } | |
1673 | ||
1674 | static const cmdinfo_t close_cmd = { | |
1675 | .name = "close", | |
1676 | .altname = "c", | |
1677 | .cfunc = close_f, | |
1678 | .oneline = "close the current open file", | |
1679 | }; | |
1680 | ||
1681 | static int openfile(char *name, int flags, int growable) | |
1682 | { | |
1683 | if (bs) { | |
1684 | fprintf(stderr, "file open already, try 'help close'\n"); | |
1685 | return 1; | |
1686 | } | |
1687 | ||
1688 | if (growable) { | |
1689 | if (bdrv_file_open(&bs, name, flags)) { | |
1690 | fprintf(stderr, "%s: can't open device %s\n", progname, name); | |
1691 | return 1; | |
1692 | } | |
1693 | } else { | |
1694 | bs = bdrv_new("hda"); | |
1695 | ||
1696 | if (bdrv_open(bs, name, flags, NULL) < 0) { | |
1697 | fprintf(stderr, "%s: can't open device %s\n", progname, name); | |
1698 | bdrv_delete(bs); | |
1699 | bs = NULL; | |
1700 | return 1; | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | return 0; | |
1705 | } | |
1706 | ||
1707 | static void open_help(void) | |
1708 | { | |
1709 | printf( | |
1710 | "\n" | |
1711 | " opens a new file in the requested mode\n" | |
1712 | "\n" | |
1713 | " Example:\n" | |
1714 | " 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n" | |
1715 | "\n" | |
1716 | " Opens a file for subsequent use by all of the other qemu-io commands.\n" | |
1717 | " -r, -- open file read-only\n" | |
1718 | " -s, -- use snapshot file\n" | |
1719 | " -n, -- disable host cache\n" | |
1720 | " -g, -- allow file to grow (only applies to protocols)" | |
1721 | "\n"); | |
1722 | } | |
1723 | ||
1724 | static int open_f(int argc, char **argv); | |
1725 | ||
1726 | static const cmdinfo_t open_cmd = { | |
1727 | .name = "open", | |
1728 | .altname = "o", | |
1729 | .cfunc = open_f, | |
1730 | .argmin = 1, | |
1731 | .argmax = -1, | |
1732 | .flags = CMD_NOFILE_OK, | |
1733 | .args = "[-Crsn] [path]", | |
1734 | .oneline = "open the file specified by path", | |
1735 | .help = open_help, | |
1736 | }; | |
1737 | ||
1738 | static int open_f(int argc, char **argv) | |
1739 | { | |
1740 | int flags = 0; | |
1741 | int readonly = 0; | |
1742 | int growable = 0; | |
1743 | int c; | |
1744 | ||
1745 | while ((c = getopt(argc, argv, "snrg")) != EOF) { | |
1746 | switch (c) { | |
1747 | case 's': | |
1748 | flags |= BDRV_O_SNAPSHOT; | |
1749 | break; | |
1750 | case 'n': | |
1751 | flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; | |
1752 | break; | |
1753 | case 'r': | |
1754 | readonly = 1; | |
1755 | break; | |
1756 | case 'g': | |
1757 | growable = 1; | |
1758 | break; | |
1759 | default: | |
1760 | return command_usage(&open_cmd); | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | if (!readonly) { | |
1765 | flags |= BDRV_O_RDWR; | |
1766 | } | |
1767 | ||
1768 | if (optind != argc - 1) { | |
1769 | return command_usage(&open_cmd); | |
1770 | } | |
1771 | ||
1772 | return openfile(argv[optind], flags, growable); | |
1773 | } | |
1774 | ||
1775 | static int init_args_command(int index) | |
1776 | { | |
1777 | /* only one device allowed so far */ | |
1778 | if (index >= 1) { | |
1779 | return 0; | |
1780 | } | |
1781 | return ++index; | |
1782 | } | |
1783 | ||
1784 | static int init_check_command(const cmdinfo_t *ct) | |
1785 | { | |
1786 | if (ct->flags & CMD_FLAG_GLOBAL) { | |
1787 | return 1; | |
1788 | } | |
1789 | if (!(ct->flags & CMD_NOFILE_OK) && !bs) { | |
1790 | fprintf(stderr, "no file open, try 'help open'\n"); | |
1791 | return 0; | |
1792 | } | |
1793 | return 1; | |
1794 | } | |
1795 | ||
1796 | static void usage(const char *name) | |
1797 | { | |
1798 | printf( | |
1799 | "Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n" | |
1800 | "QEMU Disk exerciser\n" | |
1801 | "\n" | |
1802 | " -c, --cmd command to execute\n" | |
1803 | " -r, --read-only export read-only\n" | |
1804 | " -s, --snapshot use snapshot file\n" | |
1805 | " -n, --nocache disable host cache\n" | |
1806 | " -g, --growable allow file to grow (only applies to protocols)\n" | |
1807 | " -m, --misalign misalign allocations for O_DIRECT\n" | |
1808 | " -k, --native-aio use kernel AIO implementation (on Linux only)\n" | |
1809 | " -t, --cache=MODE use the given cache mode for the image\n" | |
1810 | " -T, --trace FILE enable trace events listed in the given file\n" | |
1811 | " -h, --help display this help and exit\n" | |
1812 | " -V, --version output version information and exit\n" | |
1813 | "\n", | |
1814 | name); | |
1815 | } | |
1816 | ||
1817 | ||
1818 | int main(int argc, char **argv) | |
1819 | { | |
1820 | int readonly = 0; | |
1821 | int growable = 0; | |
1822 | const char *sopt = "hVc:rsnmgkt:T:"; | |
1823 | const struct option lopt[] = { | |
1824 | { "help", 0, NULL, 'h' }, | |
1825 | { "version", 0, NULL, 'V' }, | |
1826 | { "offset", 1, NULL, 'o' }, | |
1827 | { "cmd", 1, NULL, 'c' }, | |
1828 | { "read-only", 0, NULL, 'r' }, | |
1829 | { "snapshot", 0, NULL, 's' }, | |
1830 | { "nocache", 0, NULL, 'n' }, | |
1831 | { "misalign", 0, NULL, 'm' }, | |
1832 | { "growable", 0, NULL, 'g' }, | |
1833 | { "native-aio", 0, NULL, 'k' }, | |
1834 | { "cache", 1, NULL, 't' }, | |
1835 | { "trace", 1, NULL, 'T' }, | |
1836 | { NULL, 0, NULL, 0 } | |
1837 | }; | |
1838 | int c; | |
1839 | int opt_index = 0; | |
1840 | int flags = 0; | |
1841 | ||
1842 | progname = basename(argv[0]); | |
1843 | ||
1844 | while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { | |
1845 | switch (c) { | |
1846 | case 's': | |
1847 | flags |= BDRV_O_SNAPSHOT; | |
1848 | break; | |
1849 | case 'n': | |
1850 | flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; | |
1851 | break; | |
1852 | case 'c': | |
1853 | add_user_command(optarg); | |
1854 | break; | |
1855 | case 'r': | |
1856 | readonly = 1; | |
1857 | break; | |
1858 | case 'm': | |
1859 | misalign = 1; | |
1860 | break; | |
1861 | case 'g': | |
1862 | growable = 1; | |
1863 | break; | |
1864 | case 'k': | |
1865 | flags |= BDRV_O_NATIVE_AIO; | |
1866 | break; | |
1867 | case 't': | |
1868 | if (bdrv_parse_cache_flags(optarg, &flags) < 0) { | |
1869 | error_report("Invalid cache option: %s", optarg); | |
1870 | exit(1); | |
1871 | } | |
1872 | break; | |
1873 | case 'T': | |
1874 | if (!trace_backend_init(optarg, NULL)) { | |
1875 | exit(1); /* error message will have been printed */ | |
1876 | } | |
1877 | break; | |
1878 | case 'V': | |
1879 | printf("%s version %s\n", progname, VERSION); | |
1880 | exit(0); | |
1881 | case 'h': | |
1882 | usage(progname); | |
1883 | exit(0); | |
1884 | default: | |
1885 | usage(progname); | |
1886 | exit(1); | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | if ((argc - optind) > 1) { | |
1891 | usage(progname); | |
1892 | exit(1); | |
1893 | } | |
1894 | ||
1895 | bdrv_init(); | |
1896 | ||
1897 | qemu_init_main_loop(); | |
1898 | ||
1899 | /* initialize commands */ | |
1900 | quit_init(); | |
1901 | help_init(); | |
1902 | add_command(&open_cmd); | |
1903 | add_command(&close_cmd); | |
1904 | add_command(&read_cmd); | |
1905 | add_command(&readv_cmd); | |
1906 | add_command(&write_cmd); | |
1907 | add_command(&writev_cmd); | |
1908 | add_command(&multiwrite_cmd); | |
1909 | add_command(&aio_read_cmd); | |
1910 | add_command(&aio_write_cmd); | |
1911 | add_command(&aio_flush_cmd); | |
1912 | add_command(&flush_cmd); | |
1913 | add_command(&truncate_cmd); | |
1914 | add_command(&length_cmd); | |
1915 | add_command(&info_cmd); | |
1916 | add_command(&discard_cmd); | |
1917 | add_command(&alloc_cmd); | |
1918 | add_command(&map_cmd); | |
1919 | add_command(&abort_cmd); | |
1920 | ||
1921 | add_args_command(init_args_command); | |
1922 | add_check_command(init_check_command); | |
1923 | ||
1924 | /* open the device */ | |
1925 | if (!readonly) { | |
1926 | flags |= BDRV_O_RDWR; | |
1927 | } | |
1928 | ||
1929 | if ((argc - optind) == 1) { | |
1930 | openfile(argv[optind], flags, growable); | |
1931 | } | |
1932 | command_loop(); | |
1933 | ||
1934 | /* | |
1935 | * Make sure all outstanding requests complete before the program exits. | |
1936 | */ | |
1937 | bdrv_drain_all(); | |
1938 | ||
1939 | if (bs) { | |
1940 | bdrv_delete(bs); | |
1941 | } | |
1942 | return 0; | |
1943 | } |