2 * Command line utility to exercise the QEMU I/O path.
4 * Copyright (C) 2009 Red Hat, Inc.
5 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
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.
11 #include "qemu-common.h"
12 #include "block/block_int.h"
15 #define CMD_NOFILE_OK 0x01
19 static int64_t cvtnum(const char *s)
22 return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B);
26 * Parse the pattern argument to various sub-commands.
28 * Because the pattern is used as an argument to memset it must evaluate
29 * to an unsigned integer that fits into a single byte.
31 static int parse_pattern(const char *arg)
36 pattern = strtol(arg, &endptr, 0);
37 if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') {
38 printf("%s is not a valid pattern byte\n", arg);
46 * Memory allocation helpers.
48 * Make sure memory is aligned by default, or purposefully misaligned if
49 * that is specified on the command line.
52 #define MISALIGN_OFFSET 16
53 static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern)
57 if (qemuio_misalign) {
58 len += MISALIGN_OFFSET;
60 buf = qemu_blockalign(bs, len);
61 memset(buf, pattern, len);
62 if (qemuio_misalign) {
63 buf += MISALIGN_OFFSET;
68 static void qemu_io_free(void *p)
70 if (qemuio_misalign) {
76 static void dump_buffer(const void *buffer, int64_t offset, int len)
81 for (i = 0, p = buffer; i < len; i += 16) {
84 printf("%08" PRIx64 ": ", offset + i);
85 for (j = 0; j < 16 && i + j < len; j++, p++) {
89 for (j = 0; j < 16 && i + j < len; j++, s++) {
100 static void print_report(const char *op, struct timeval *t, int64_t offset,
101 int count, int total, int cnt, int Cflag)
103 char s1[64], s2[64], ts[64];
105 timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
107 cvtstr((double)total, s1, sizeof(s1));
108 cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
109 printf("%s %d/%d bytes at offset %" PRId64 "\n",
110 op, total, count, offset);
111 printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
112 s1, cnt, ts, s2, tdiv((double)cnt, *t));
113 } else {/* bytes,ops,time,bytes/sec,ops/sec */
114 printf("%d,%d,%s,%.3f,%.3f\n",
116 tdiv((double)total, *t),
117 tdiv((double)cnt, *t));
122 * Parse multiple length statements for vectored I/O, and construct an I/O
123 * vector matching it.
126 create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov,
129 size_t *sizes = g_new0(size_t, nr_iov);
135 for (i = 0; i < nr_iov; i++) {
141 printf("non-numeric length argument -- %s\n", arg);
145 /* should be SIZE_T_MAX, but that doesn't exist */
147 printf("too large length argument -- %s\n", arg);
152 printf("length argument %" PRId64
153 " is not sector aligned\n", len);
161 qemu_iovec_init(qiov, nr_iov);
163 buf = p = qemu_io_alloc(bs, count, pattern);
165 for (i = 0; i < nr_iov; i++) {
166 qemu_iovec_add(qiov, p, sizes[i]);
175 static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count,
180 ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9);
188 static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count,
193 ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9);
201 static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count,
204 *total = bdrv_pread(bs, offset, (uint8_t *)buf, count);
211 static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count,
214 *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count);
222 BlockDriverState *bs;
230 static void coroutine_fn co_write_zeroes_entry(void *opaque)
232 CoWriteZeroes *data = opaque;
234 data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE,
235 data->count / BDRV_SECTOR_SIZE);
238 *data->total = data->ret;
242 *data->total = data->count;
245 static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count,
249 CoWriteZeroes data = {
257 co = qemu_coroutine_create(co_write_zeroes_entry);
258 qemu_coroutine_enter(co, &data);
269 static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset,
270 int count, int *total)
274 ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9);
282 static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset,
283 int count, int *total)
285 *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count);
292 static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset,
293 int count, int *total)
295 *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count);
302 #define NOT_DONE 0x7fffffff
303 static void aio_rw_done(void *opaque, int ret)
305 *(int *)opaque = ret;
308 static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov,
309 int64_t offset, int *total)
311 int async_ret = NOT_DONE;
313 bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
314 aio_rw_done, &async_ret);
315 while (async_ret == NOT_DONE) {
316 main_loop_wait(false);
320 return async_ret < 0 ? async_ret : 1;
323 static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov,
324 int64_t offset, int *total)
326 int async_ret = NOT_DONE;
328 bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
329 aio_rw_done, &async_ret);
330 while (async_ret == NOT_DONE) {
331 main_loop_wait(false);
335 return async_ret < 0 ? async_ret : 1;
338 struct multiwrite_async_ret {
343 static void multiwrite_cb(void *opaque, int ret)
345 struct multiwrite_async_ret *async_ret = opaque;
347 async_ret->num_done++;
349 async_ret->error = ret;
353 static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs,
354 int num_reqs, int *total)
357 struct multiwrite_async_ret async_ret = {
363 for (i = 0; i < num_reqs; i++) {
364 reqs[i].cb = multiwrite_cb;
365 reqs[i].opaque = &async_ret;
366 *total += reqs[i].qiov->size;
369 ret = bdrv_aio_multiwrite(bs, reqs, num_reqs);
374 while (async_ret.num_done < num_reqs) {
375 main_loop_wait(false);
378 return async_ret.error < 0 ? async_ret.error : 1;
381 static void read_help(void)
385 " reads a range of bytes from the given offset\n"
388 " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
390 " Reads a segment of the currently open file, optionally dumping it to the\n"
391 " standard output stream (with -v option) for subsequent inspection.\n"
392 " -b, -- read from the VM state rather than the virtual disk\n"
393 " -C, -- report statistics in a machine parsable format\n"
394 " -l, -- length for pattern verification (only with -P)\n"
395 " -p, -- use bdrv_pread to read the file\n"
396 " -P, -- use a pattern to verify read data\n"
397 " -q, -- quiet mode, do not show I/O statistics\n"
398 " -s, -- start offset for pattern verification (only with -P)\n"
399 " -v, -- dump buffer to standard output\n"
403 static int read_f(BlockDriverState *bs, int argc, char **argv);
405 static const cmdinfo_t read_cmd = {
411 .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
412 .oneline = "reads a number of bytes at a specified offset",
416 static int read_f(BlockDriverState *bs, int argc, char **argv)
418 struct timeval t1, t2;
419 int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
420 int Pflag = 0, sflag = 0, lflag = 0, bflag = 0;
425 /* Some compilers get confused and warn if this is not initialized. */
427 int pattern = 0, pattern_offset = 0, pattern_count = 0;
429 while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) {
439 pattern_count = cvtnum(optarg);
440 if (pattern_count < 0) {
441 printf("non-numeric length argument -- %s\n", optarg);
450 pattern = parse_pattern(optarg);
460 pattern_offset = cvtnum(optarg);
461 if (pattern_offset < 0) {
462 printf("non-numeric length argument -- %s\n", optarg);
470 return command_usage(&read_cmd);
474 if (optind != argc - 2) {
475 return command_usage(&read_cmd);
478 if (bflag && pflag) {
479 printf("-b and -p cannot be specified at the same time\n");
483 offset = cvtnum(argv[optind]);
485 printf("non-numeric length argument -- %s\n", argv[optind]);
490 count = cvtnum(argv[optind]);
492 printf("non-numeric length argument -- %s\n", argv[optind]);
496 if (!Pflag && (lflag || sflag)) {
497 return command_usage(&read_cmd);
501 pattern_count = count - pattern_offset;
504 if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
505 printf("pattern verification range exceeds end of read data\n");
510 if (offset & 0x1ff) {
511 printf("offset %" PRId64 " is not sector aligned\n",
516 printf("count %d is not sector aligned\n",
522 buf = qemu_io_alloc(bs, count, 0xab);
524 gettimeofday(&t1, NULL);
526 cnt = do_pread(bs, buf, offset, count, &total);
528 cnt = do_load_vmstate(bs, buf, offset, count, &total);
530 cnt = do_read(bs, buf, offset, count, &total);
532 gettimeofday(&t2, NULL);
535 printf("read failed: %s\n", strerror(-cnt));
540 void *cmp_buf = g_malloc(pattern_count);
541 memset(cmp_buf, pattern, pattern_count);
542 if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
543 printf("Pattern verification failed at offset %"
544 PRId64 ", %d bytes\n",
545 offset + pattern_offset, pattern_count);
555 dump_buffer(buf, offset, count);
558 /* Finally, report back -- -C gives a parsable format */
560 print_report("read", &t2, offset, count, total, cnt, Cflag);
568 static void readv_help(void)
572 " reads a range of bytes from the given offset into multiple buffers\n"
575 " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
577 " Reads a segment of the currently open file, optionally dumping it to the\n"
578 " standard output stream (with -v option) for subsequent inspection.\n"
579 " Uses multiple iovec buffers if more than one byte range is specified.\n"
580 " -C, -- report statistics in a machine parsable format\n"
581 " -P, -- use a pattern to verify read data\n"
582 " -v, -- dump buffer to standard output\n"
583 " -q, -- quiet mode, do not show I/O statistics\n"
587 static int readv_f(BlockDriverState *bs, int argc, char **argv);
589 static const cmdinfo_t readv_cmd = {
594 .args = "[-Cqv] [-P pattern ] off len [len..]",
595 .oneline = "reads a number of bytes at a specified offset",
599 static int readv_f(BlockDriverState *bs, int argc, char **argv)
601 struct timeval t1, t2;
602 int Cflag = 0, qflag = 0, vflag = 0;
606 /* Some compilers get confused and warn if this is not initialized. */
613 while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
620 pattern = parse_pattern(optarg);
632 return command_usage(&readv_cmd);
636 if (optind > argc - 2) {
637 return command_usage(&readv_cmd);
641 offset = cvtnum(argv[optind]);
643 printf("non-numeric length argument -- %s\n", argv[optind]);
648 if (offset & 0x1ff) {
649 printf("offset %" PRId64 " is not sector aligned\n",
654 nr_iov = argc - optind;
655 buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab);
660 gettimeofday(&t1, NULL);
661 cnt = do_aio_readv(bs, &qiov, offset, &total);
662 gettimeofday(&t2, NULL);
665 printf("readv failed: %s\n", strerror(-cnt));
670 void *cmp_buf = g_malloc(qiov.size);
671 memset(cmp_buf, pattern, qiov.size);
672 if (memcmp(buf, cmp_buf, qiov.size)) {
673 printf("Pattern verification failed at offset %"
674 PRId64 ", %zd bytes\n", offset, qiov.size);
684 dump_buffer(buf, offset, qiov.size);
687 /* Finally, report back -- -C gives a parsable format */
689 print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
692 qemu_iovec_destroy(&qiov);
697 static void write_help(void)
701 " writes a range of bytes from the given offset\n"
704 " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
706 " Writes into a segment of the currently open file, using a buffer\n"
707 " filled with a set pattern (0xcdcdcdcd).\n"
708 " -b, -- write to the VM state rather than the virtual disk\n"
709 " -c, -- write compressed data with bdrv_write_compressed\n"
710 " -p, -- use bdrv_pwrite to write the file\n"
711 " -P, -- use different pattern to fill file\n"
712 " -C, -- report statistics in a machine parsable format\n"
713 " -q, -- quiet mode, do not show I/O statistics\n"
714 " -z, -- write zeroes using bdrv_co_write_zeroes\n"
718 static int write_f(BlockDriverState *bs, int argc, char **argv);
720 static const cmdinfo_t write_cmd = {
726 .args = "[-bcCpqz] [-P pattern ] off len",
727 .oneline = "writes a number of bytes at a specified offset",
731 static int write_f(BlockDriverState *bs, int argc, char **argv)
733 struct timeval t1, t2;
734 int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
740 /* Some compilers get confused and warn if this is not initialized. */
744 while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) {
760 pattern = parse_pattern(optarg);
772 return command_usage(&write_cmd);
776 if (optind != argc - 2) {
777 return command_usage(&write_cmd);
780 if (bflag + pflag + zflag > 1) {
781 printf("-b, -p, or -z cannot be specified at the same time\n");
785 if (zflag && Pflag) {
786 printf("-z and -P cannot be specified at the same time\n");
790 offset = cvtnum(argv[optind]);
792 printf("non-numeric length argument -- %s\n", argv[optind]);
797 count = cvtnum(argv[optind]);
799 printf("non-numeric length argument -- %s\n", argv[optind]);
804 if (offset & 0x1ff) {
805 printf("offset %" PRId64 " is not sector aligned\n",
811 printf("count %d is not sector aligned\n",
818 buf = qemu_io_alloc(bs, count, pattern);
821 gettimeofday(&t1, NULL);
823 cnt = do_pwrite(bs, buf, offset, count, &total);
825 cnt = do_save_vmstate(bs, buf, offset, count, &total);
827 cnt = do_co_write_zeroes(bs, offset, count, &total);
829 cnt = do_write_compressed(bs, buf, offset, count, &total);
831 cnt = do_write(bs, buf, offset, count, &total);
833 gettimeofday(&t2, NULL);
836 printf("write failed: %s\n", strerror(-cnt));
844 /* Finally, report back -- -C gives a parsable format */
846 print_report("wrote", &t2, offset, count, total, cnt, Cflag);
861 " writes a range of bytes from the given offset source from multiple buffers\n"
864 " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
866 " Writes into a segment of the currently open file, using a buffer\n"
867 " filled with a set pattern (0xcdcdcdcd).\n"
868 " -P, -- use different pattern to fill file\n"
869 " -C, -- report statistics in a machine parsable format\n"
870 " -q, -- quiet mode, do not show I/O statistics\n"
874 static int writev_f(BlockDriverState *bs, int argc, char **argv);
876 static const cmdinfo_t writev_cmd = {
881 .args = "[-Cq] [-P pattern ] off len [len..]",
882 .oneline = "writes a number of bytes at a specified offset",
886 static int writev_f(BlockDriverState *bs, int argc, char **argv)
888 struct timeval t1, t2;
889 int Cflag = 0, qflag = 0;
893 /* Some compilers get confused and warn if this is not initialized. */
899 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
908 pattern = parse_pattern(optarg);
914 return command_usage(&writev_cmd);
918 if (optind > argc - 2) {
919 return command_usage(&writev_cmd);
922 offset = cvtnum(argv[optind]);
924 printf("non-numeric length argument -- %s\n", argv[optind]);
929 if (offset & 0x1ff) {
930 printf("offset %" PRId64 " is not sector aligned\n",
935 nr_iov = argc - optind;
936 buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern);
941 gettimeofday(&t1, NULL);
942 cnt = do_aio_writev(bs, &qiov, offset, &total);
943 gettimeofday(&t2, NULL);
946 printf("writev failed: %s\n", strerror(-cnt));
954 /* Finally, report back -- -C gives a parsable format */
956 print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
958 qemu_iovec_destroy(&qiov);
963 static void multiwrite_help(void)
967 " writes a range of bytes from the given offset source from multiple buffers,\n"
968 " in a batch of requests that may be merged by qemu\n"
971 " 'multiwrite 512 1k 1k ; 4k 1k'\n"
972 " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
974 " Writes into a segment of the currently open file, using a buffer\n"
975 " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
976 " by one for each request contained in the multiwrite command.\n"
977 " -P, -- use different pattern to fill file\n"
978 " -C, -- report statistics in a machine parsable format\n"
979 " -q, -- quiet mode, do not show I/O statistics\n"
983 static int multiwrite_f(BlockDriverState *bs, int argc, char **argv);
985 static const cmdinfo_t multiwrite_cmd = {
986 .name = "multiwrite",
987 .cfunc = multiwrite_f,
990 .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
991 .oneline = "issues multiple write requests at once",
992 .help = multiwrite_help,
995 static int multiwrite_f(BlockDriverState *bs, int argc, char **argv)
997 struct timeval t1, t2;
998 int Cflag = 0, qflag = 0;
1001 int64_t offset, first_offset = 0;
1002 /* Some compilers get confused and warn if this is not initialized. */
1007 QEMUIOVector *qiovs;
1011 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
1020 pattern = parse_pattern(optarg);
1026 return command_usage(&writev_cmd);
1030 if (optind > argc - 2) {
1031 return command_usage(&writev_cmd);
1035 for (i = optind; i < argc; i++) {
1036 if (!strcmp(argv[i], ";")) {
1041 reqs = g_malloc0(nr_reqs * sizeof(*reqs));
1042 buf = g_malloc0(nr_reqs * sizeof(*buf));
1043 qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
1045 for (i = 0; i < nr_reqs && optind < argc; i++) {
1048 /* Read the offset of the request */
1049 offset = cvtnum(argv[optind]);
1051 printf("non-numeric offset argument -- %s\n", argv[optind]);
1056 if (offset & 0x1ff) {
1057 printf("offset %lld is not sector aligned\n",
1063 first_offset = offset;
1066 /* Read lengths for qiov entries */
1067 for (j = optind; j < argc; j++) {
1068 if (!strcmp(argv[j], ";")) {
1073 nr_iov = j - optind;
1076 buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern);
1077 if (buf[i] == NULL) {
1081 reqs[i].qiov = &qiovs[i];
1082 reqs[i].sector = offset >> 9;
1083 reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
1090 /* If there were empty requests at the end, ignore them */
1093 gettimeofday(&t1, NULL);
1094 cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total);
1095 gettimeofday(&t2, NULL);
1098 printf("aio_multiwrite failed: %s\n", strerror(-cnt));
1106 /* Finally, report back -- -C gives a parsable format */
1108 print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
1110 for (i = 0; i < nr_reqs; i++) {
1111 qemu_io_free(buf[i]);
1112 if (reqs[i].qiov != NULL) {
1113 qemu_iovec_destroy(&qiovs[i]);
1134 static void aio_write_done(void *opaque, int ret)
1136 struct aio_ctx *ctx = opaque;
1139 gettimeofday(&t2, NULL);
1143 printf("aio_write failed: %s\n", strerror(-ret));
1151 /* Finally, report back -- -C gives a parsable format */
1152 t2 = tsub(t2, ctx->t1);
1153 print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
1154 ctx->qiov.size, 1, ctx->Cflag);
1156 qemu_io_free(ctx->buf);
1157 qemu_iovec_destroy(&ctx->qiov);
1161 static void aio_read_done(void *opaque, int ret)
1163 struct aio_ctx *ctx = opaque;
1166 gettimeofday(&t2, NULL);
1169 printf("readv failed: %s\n", strerror(-ret));
1174 void *cmp_buf = g_malloc(ctx->qiov.size);
1176 memset(cmp_buf, ctx->pattern, ctx->qiov.size);
1177 if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
1178 printf("Pattern verification failed at offset %"
1179 PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
1189 dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
1192 /* Finally, report back -- -C gives a parsable format */
1193 t2 = tsub(t2, ctx->t1);
1194 print_report("read", &t2, ctx->offset, ctx->qiov.size,
1195 ctx->qiov.size, 1, ctx->Cflag);
1197 qemu_io_free(ctx->buf);
1198 qemu_iovec_destroy(&ctx->qiov);
1202 static void aio_read_help(void)
1206 " asynchronously reads a range of bytes from the given offset\n"
1209 " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
1211 " Reads a segment of the currently open file, optionally dumping it to the\n"
1212 " standard output stream (with -v option) for subsequent inspection.\n"
1213 " The read is performed asynchronously and the aio_flush command must be\n"
1214 " used to ensure all outstanding aio requests have been completed.\n"
1215 " -C, -- report statistics in a machine parsable format\n"
1216 " -P, -- use a pattern to verify read data\n"
1217 " -v, -- dump buffer to standard output\n"
1218 " -q, -- quiet mode, do not show I/O statistics\n"
1222 static int aio_read_f(BlockDriverState *bs, int argc, char **argv);
1224 static const cmdinfo_t aio_read_cmd = {
1226 .cfunc = aio_read_f,
1229 .args = "[-Cqv] [-P pattern ] off len [len..]",
1230 .oneline = "asynchronously reads a number of bytes",
1231 .help = aio_read_help,
1234 static int aio_read_f(BlockDriverState *bs, int argc, char **argv)
1237 struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
1239 while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
1246 ctx->pattern = parse_pattern(optarg);
1247 if (ctx->pattern < 0) {
1260 return command_usage(&aio_read_cmd);
1264 if (optind > argc - 2) {
1266 return command_usage(&aio_read_cmd);
1269 ctx->offset = cvtnum(argv[optind]);
1270 if (ctx->offset < 0) {
1271 printf("non-numeric length argument -- %s\n", argv[optind]);
1277 if (ctx->offset & 0x1ff) {
1278 printf("offset %" PRId64 " is not sector aligned\n",
1284 nr_iov = argc - optind;
1285 ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab);
1286 if (ctx->buf == NULL) {
1291 gettimeofday(&ctx->t1, NULL);
1292 bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
1293 ctx->qiov.size >> 9, aio_read_done, ctx);
1297 static void aio_write_help(void)
1301 " asynchronously writes a range of bytes from the given offset source\n"
1302 " from multiple buffers\n"
1305 " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
1307 " Writes into a segment of the currently open file, using a buffer\n"
1308 " filled with a set pattern (0xcdcdcdcd).\n"
1309 " The write is performed asynchronously and the aio_flush command must be\n"
1310 " used to ensure all outstanding aio requests have been completed.\n"
1311 " -P, -- use different pattern to fill file\n"
1312 " -C, -- report statistics in a machine parsable format\n"
1313 " -q, -- quiet mode, do not show I/O statistics\n"
1317 static int aio_write_f(BlockDriverState *bs, int argc, char **argv);
1319 static const cmdinfo_t aio_write_cmd = {
1320 .name = "aio_write",
1321 .cfunc = aio_write_f,
1324 .args = "[-Cq] [-P pattern ] off len [len..]",
1325 .oneline = "asynchronously writes a number of bytes",
1326 .help = aio_write_help,
1329 static int aio_write_f(BlockDriverState *bs, int argc, char **argv)
1333 struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
1335 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
1344 pattern = parse_pattern(optarg);
1352 return command_usage(&aio_write_cmd);
1356 if (optind > argc - 2) {
1358 return command_usage(&aio_write_cmd);
1361 ctx->offset = cvtnum(argv[optind]);
1362 if (ctx->offset < 0) {
1363 printf("non-numeric length argument -- %s\n", argv[optind]);
1369 if (ctx->offset & 0x1ff) {
1370 printf("offset %" PRId64 " is not sector aligned\n",
1376 nr_iov = argc - optind;
1377 ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern);
1378 if (ctx->buf == NULL) {
1383 gettimeofday(&ctx->t1, NULL);
1384 bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
1385 ctx->qiov.size >> 9, aio_write_done, ctx);
1389 static int aio_flush_f(BlockDriverState *bs, int argc, char **argv)
1395 static const cmdinfo_t aio_flush_cmd = {
1396 .name = "aio_flush",
1397 .cfunc = aio_flush_f,
1398 .oneline = "completes all outstanding aio requests"
1401 static int flush_f(BlockDriverState *bs, int argc, char **argv)
1407 static const cmdinfo_t flush_cmd = {
1411 .oneline = "flush all in-core file state to disk",
1414 static int truncate_f(BlockDriverState *bs, int argc, char **argv)
1419 offset = cvtnum(argv[1]);
1421 printf("non-numeric truncate argument -- %s\n", argv[1]);
1425 ret = bdrv_truncate(bs, offset);
1427 printf("truncate: %s\n", strerror(-ret));
1434 static const cmdinfo_t truncate_cmd = {
1437 .cfunc = truncate_f,
1441 .oneline = "truncates the current file at the given offset",
1444 static int length_f(BlockDriverState *bs, int argc, char **argv)
1449 size = bdrv_getlength(bs);
1451 printf("getlength: %s\n", strerror(-size));
1455 cvtstr(size, s1, sizeof(s1));
1461 static const cmdinfo_t length_cmd = {
1465 .oneline = "gets the length of the current file",
1469 static int info_f(BlockDriverState *bs, int argc, char **argv)
1471 BlockDriverInfo bdi;
1472 char s1[64], s2[64];
1475 if (bs->drv && bs->drv->format_name) {
1476 printf("format name: %s\n", bs->drv->format_name);
1478 if (bs->drv && bs->drv->protocol_name) {
1479 printf("format name: %s\n", bs->drv->protocol_name);
1482 ret = bdrv_get_info(bs, &bdi);
1487 cvtstr(bdi.cluster_size, s1, sizeof(s1));
1488 cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
1490 printf("cluster size: %s\n", s1);
1491 printf("vm state offset: %s\n", s2);
1498 static const cmdinfo_t info_cmd = {
1502 .oneline = "prints information about the current file",
1505 static void discard_help(void)
1509 " discards a range of bytes from the given offset\n"
1512 " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
1514 " Discards a segment of the currently open file.\n"
1515 " -C, -- report statistics in a machine parsable format\n"
1516 " -q, -- quiet mode, do not show I/O statistics\n"
1520 static int discard_f(BlockDriverState *bs, int argc, char **argv);
1522 static const cmdinfo_t discard_cmd = {
1528 .args = "[-Cq] off len",
1529 .oneline = "discards a number of bytes at a specified offset",
1530 .help = discard_help,
1533 static int discard_f(BlockDriverState *bs, int argc, char **argv)
1535 struct timeval t1, t2;
1536 int Cflag = 0, qflag = 0;
1541 while ((c = getopt(argc, argv, "Cq")) != EOF) {
1550 return command_usage(&discard_cmd);
1554 if (optind != argc - 2) {
1555 return command_usage(&discard_cmd);
1558 offset = cvtnum(argv[optind]);
1560 printf("non-numeric length argument -- %s\n", argv[optind]);
1565 count = cvtnum(argv[optind]);
1567 printf("non-numeric length argument -- %s\n", argv[optind]);
1571 gettimeofday(&t1, NULL);
1572 ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS,
1573 count >> BDRV_SECTOR_BITS);
1574 gettimeofday(&t2, NULL);
1577 printf("discard failed: %s\n", strerror(-ret));
1581 /* Finally, report back -- -C gives a parsable format */
1584 print_report("discard", &t2, offset, count, count, 1, Cflag);
1591 static int alloc_f(BlockDriverState *bs, int argc, char **argv)
1593 int64_t offset, sector_num;
1594 int nb_sectors, remaining;
1599 offset = cvtnum(argv[1]);
1601 printf("non-numeric offset argument -- %s\n", argv[1]);
1603 } else if (offset & 0x1ff) {
1604 printf("offset %" PRId64 " is not sector aligned\n",
1610 nb_sectors = cvtnum(argv[2]);
1611 if (nb_sectors < 0) {
1612 printf("non-numeric length argument -- %s\n", argv[2]);
1619 remaining = nb_sectors;
1621 sector_num = offset >> 9;
1623 ret = bdrv_is_allocated(bs, sector_num, remaining, &num);
1630 nb_sectors -= remaining;
1635 cvtstr(offset, s1, sizeof(s1));
1637 printf("%d/%d sectors allocated at offset %s\n",
1638 sum_alloc, nb_sectors, s1);
1642 static const cmdinfo_t alloc_cmd = {
1648 .args = "off [sectors]",
1649 .oneline = "checks if a sector is present in the file",
1653 static int map_is_allocated(BlockDriverState *bs, int64_t sector_num,
1654 int64_t nb_sectors, int64_t *pnum)
1656 int num, num_checked;
1659 num_checked = MIN(nb_sectors, INT_MAX);
1660 ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
1668 while (nb_sectors > 0 && ret == firstret) {
1672 num_checked = MIN(nb_sectors, INT_MAX);
1673 ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
1674 if (ret == firstret) {
1684 static int map_f(BlockDriverState *bs, int argc, char **argv)
1694 nb_sectors = bs->total_sectors;
1697 ret = map_is_allocated(bs, offset, nb_sectors, &num);
1699 error_report("Failed to get allocation status: %s", strerror(-ret));
1703 retstr = ret ? " allocated" : "not allocated";
1704 cvtstr(offset << 9ULL, s1, sizeof(s1));
1705 printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s "
1706 "at offset %s (%d)\n",
1707 offset << 9ULL, num, nb_sectors, retstr, s1, ret);
1711 } while (offset < bs->total_sectors);
1716 static const cmdinfo_t map_cmd = {
1722 .oneline = "prints the allocated areas of a file",
1725 static int break_f(BlockDriverState *bs, int argc, char **argv)
1729 ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]);
1731 printf("Could not set breakpoint: %s\n", strerror(-ret));
1737 static const cmdinfo_t break_cmd = {
1742 .args = "event tag",
1743 .oneline = "sets a breakpoint on event and tags the stopped "
1747 static int resume_f(BlockDriverState *bs, int argc, char **argv)
1751 ret = bdrv_debug_resume(bs, argv[1]);
1753 printf("Could not resume request: %s\n", strerror(-ret));
1759 static const cmdinfo_t resume_cmd = {
1765 .oneline = "resumes the request tagged as tag",
1768 static int wait_break_f(BlockDriverState *bs, int argc, char **argv)
1770 while (!bdrv_debug_is_suspended(bs, argv[1])) {
1777 static const cmdinfo_t wait_break_cmd = {
1778 .name = "wait_break",
1781 .cfunc = wait_break_f,
1783 .oneline = "waits for the suspension of a request",
1786 static int abort_f(BlockDriverState *bs, int argc, char **argv)
1791 static const cmdinfo_t abort_cmd = {
1794 .flags = CMD_NOFILE_OK,
1795 .oneline = "simulate a program crash using abort(3)",
1798 static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct)
1800 if (ct->flags & CMD_FLAG_GLOBAL) {
1803 if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
1804 fprintf(stderr, "no file open, try 'help open'\n");
1810 static void __attribute((constructor)) init_qemuio_commands(void)
1812 /* initialize commands */
1814 add_command(&read_cmd);
1815 add_command(&readv_cmd);
1816 add_command(&write_cmd);
1817 add_command(&writev_cmd);
1818 add_command(&multiwrite_cmd);
1819 add_command(&aio_read_cmd);
1820 add_command(&aio_write_cmd);
1821 add_command(&aio_flush_cmd);
1822 add_command(&flush_cmd);
1823 add_command(&truncate_cmd);
1824 add_command(&length_cmd);
1825 add_command(&info_cmd);
1826 add_command(&discard_cmd);
1827 add_command(&alloc_cmd);
1828 add_command(&map_cmd);
1829 add_command(&break_cmd);
1830 add_command(&resume_cmd);
1831 add_command(&wait_break_cmd);
1832 add_command(&abort_cmd);
1834 add_check_command(init_check_command);