}
static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset,
- int64_t count, int64_t *total)
+ int64_t count, int flags, int64_t *total)
{
if (count > INT_MAX) {
return -ERANGE;
}
- *total = blk_pwrite(blk, offset, (uint8_t *)buf, count, 0);
+ *total = blk_pwrite(blk, offset, (uint8_t *)buf, count, flags);
if (*total < 0) {
return *total;
}
int64_t offset;
int64_t count;
int64_t *total;
+ int flags;
int ret;
bool done;
} CoWriteZeroes;
{
CoWriteZeroes *data = opaque;
- data->ret = blk_co_write_zeroes(data->blk, data->offset, data->count, 0);
+ data->ret = blk_co_write_zeroes(data->blk, data->offset, data->count,
+ data->flags);
data->done = true;
if (data->ret < 0) {
*data->total = data->ret;
}
static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int64_t count,
- int64_t *total)
+ int flags, int64_t *total)
{
Coroutine *co;
CoWriteZeroes data = {
.offset = offset,
.count = count,
.total = total,
+ .flags = flags,
.done = false,
};
}
static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov,
- int64_t offset, int *total)
+ int64_t offset, int flags, int *total)
{
int async_ret = NOT_DONE;
- blk_aio_pwritev(blk, offset, qiov, 0, aio_rw_done, &async_ret);
+ blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret);
while (async_ret == NOT_DONE) {
main_loop_wait(false);
}
return async_ret < 0 ? async_ret : 1;
}
-struct multiwrite_async_ret {
- int num_done;
- int error;
-};
-
-static void multiwrite_cb(void *opaque, int ret)
-{
- struct multiwrite_async_ret *async_ret = opaque;
-
- async_ret->num_done++;
- if (ret < 0) {
- async_ret->error = ret;
- }
-}
-
-static int do_aio_multiwrite(BlockBackend *blk, BlockRequest* reqs,
- int num_reqs, int *total)
-{
- int i, ret;
- struct multiwrite_async_ret async_ret = {
- .num_done = 0,
- .error = 0,
- };
-
- *total = 0;
- for (i = 0; i < num_reqs; i++) {
- reqs[i].cb = multiwrite_cb;
- reqs[i].opaque = &async_ret;
- *total += reqs[i].qiov->size;
- }
-
- ret = blk_aio_multiwrite(blk, reqs, num_reqs);
- if (ret < 0) {
- return ret;
- }
-
- while (async_ret.num_done < num_reqs) {
- main_loop_wait(false);
- }
-
- return async_ret.error < 0 ? async_ret.error : 1;
-}
-
static void read_help(void)
{
printf(
" filled with a set pattern (0xcdcdcdcd).\n"
" -b, -- write to the VM state rather than the virtual disk\n"
" -c, -- write compressed data with blk_write_compressed\n"
+" -f, -- use Force Unit Access semantics\n"
" -p, -- ignored for backwards compatibility\n"
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
" -q, -- quiet mode, do not show I/O statistics\n"
+" -u, -- with -z, allow unmapping\n"
" -z, -- write zeroes using blk_co_write_zeroes\n"
"\n");
}
.cfunc = write_f,
.argmin = 2,
.argmax = -1,
- .args = "[-bcCqz] [-P pattern] off len",
+ .args = "[-bcCfquz] [-P pattern] off len",
.oneline = "writes a number of bytes at a specified offset",
.help = write_help,
};
struct timeval t1, t2;
bool Cflag = false, qflag = false, bflag = false;
bool Pflag = false, zflag = false, cflag = false;
+ int flags = 0;
int c, cnt;
char *buf = NULL;
int64_t offset;
int64_t total = 0;
int pattern = 0xcd;
- while ((c = getopt(argc, argv, "bcCpP:qz")) != -1) {
+ while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) {
switch (c) {
case 'b':
bflag = true;
case 'C':
Cflag = true;
break;
+ case 'f':
+ flags |= BDRV_REQ_FUA;
+ break;
case 'p':
/* Ignored for backwards compatibility */
break;
case 'q':
qflag = true;
break;
+ case 'u':
+ flags |= BDRV_REQ_MAY_UNMAP;
+ break;
case 'z':
zflag = true;
break;
return 0;
}
+ if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) {
+ printf("-f and -b or -c cannot be specified at the same time\n");
+ return 0;
+ }
+
+ if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) {
+ printf("-u requires -z to be specified\n");
+ return 0;
+ }
+
if (zflag && Pflag) {
printf("-z and -P cannot be specified at the same time\n");
return 0;
if (bflag) {
cnt = do_save_vmstate(blk, buf, offset, count, &total);
} else if (zflag) {
- cnt = do_co_write_zeroes(blk, offset, count, &total);
+ cnt = do_co_write_zeroes(blk, offset, count, flags, &total);
} else if (cflag) {
cnt = do_write_compressed(blk, buf, offset, count, &total);
} else {
- cnt = do_pwrite(blk, buf, offset, count, &total);
+ cnt = do_pwrite(blk, buf, offset, count, flags, &total);
}
gettimeofday(&t2, NULL);
" filled with a set pattern (0xcdcdcdcd).\n"
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
+" -f, -- use Force Unit Access semantics\n"
" -q, -- quiet mode, do not show I/O statistics\n"
"\n");
}
.cfunc = writev_f,
.argmin = 2,
.argmax = -1,
- .args = "[-Cq] [-P pattern] off len [len..]",
+ .args = "[-Cfq] [-P pattern] off len [len..]",
.oneline = "writes a number of bytes at a specified offset",
.help = writev_help,
};
{
struct timeval t1, t2;
bool Cflag = false, qflag = false;
+ int flags = 0;
int c, cnt;
char *buf;
int64_t offset;
int pattern = 0xcd;
QEMUIOVector qiov;
- while ((c = getopt(argc, argv, "CqP:")) != -1) {
+ while ((c = getopt(argc, argv, "CfqP:")) != -1) {
switch (c) {
case 'C':
Cflag = true;
break;
+ case 'f':
+ flags |= BDRV_REQ_FUA;
+ break;
case 'q':
qflag = true;
break;
}
gettimeofday(&t1, NULL);
- cnt = do_aio_writev(blk, &qiov, offset, &total);
+ cnt = do_aio_writev(blk, &qiov, offset, flags, &total);
gettimeofday(&t2, NULL);
if (cnt < 0) {
return 0;
}
-static void multiwrite_help(void)
-{
- printf(
-"\n"
-" writes a range of bytes from the given offset source from multiple buffers,\n"
-" in a batch of requests that may be merged by qemu\n"
-"\n"
-" Example:\n"
-" 'multiwrite 512 1k 1k ; 4k 1k'\n"
-" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
-"\n"
-" Writes into a segment of the currently open file, using a buffer\n"
-" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
-" by one for each request contained in the multiwrite command.\n"
-" -P, -- use different pattern to fill file\n"
-" -C, -- report statistics in a machine parsable format\n"
-" -q, -- quiet mode, do not show I/O statistics\n"
-"\n");
-}
-
-static int multiwrite_f(BlockBackend *blk, int argc, char **argv);
-
-static const cmdinfo_t multiwrite_cmd = {
- .name = "multiwrite",
- .cfunc = multiwrite_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
- .oneline = "issues multiple write requests at once",
- .help = multiwrite_help,
-};
-
-static int multiwrite_f(BlockBackend *blk, int argc, char **argv)
-{
- struct timeval t1, t2;
- bool Cflag = false, qflag = false;
- int c, cnt;
- char **buf;
- int64_t offset, first_offset = 0;
- /* Some compilers get confused and warn if this is not initialized. */
- int total = 0;
- int nr_iov;
- int nr_reqs;
- int pattern = 0xcd;
- QEMUIOVector *qiovs;
- int i;
- BlockRequest *reqs;
-
- while ((c = getopt(argc, argv, "CqP:")) != -1) {
- switch (c) {
- case 'C':
- Cflag = true;
- break;
- case 'q':
- qflag = true;
- break;
- case 'P':
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- return 0;
- }
- break;
- default:
- return qemuio_command_usage(&writev_cmd);
- }
- }
-
- if (optind > argc - 2) {
- return qemuio_command_usage(&writev_cmd);
- }
-
- nr_reqs = 1;
- for (i = optind; i < argc; i++) {
- if (!strcmp(argv[i], ";")) {
- nr_reqs++;
- }
- }
-
- reqs = g_new0(BlockRequest, nr_reqs);
- buf = g_new0(char *, nr_reqs);
- qiovs = g_new(QEMUIOVector, nr_reqs);
-
- for (i = 0; i < nr_reqs && optind < argc; i++) {
- int j;
-
- /* Read the offset of the request */
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- print_cvtnum_err(offset, argv[optind]);
- goto out;
- }
- optind++;
-
- if (offset & 0x1ff) {
- printf("offset %lld is not sector aligned\n",
- (long long)offset);
- goto out;
- }
-
- if (i == 0) {
- first_offset = offset;
- }
-
- /* Read lengths for qiov entries */
- for (j = optind; j < argc; j++) {
- if (!strcmp(argv[j], ";")) {
- break;
- }
- }
-
- nr_iov = j - optind;
-
- /* Build request */
- buf[i] = create_iovec(blk, &qiovs[i], &argv[optind], nr_iov, pattern);
- if (buf[i] == NULL) {
- goto out;
- }
-
- reqs[i].qiov = &qiovs[i];
- reqs[i].sector = offset >> 9;
- reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
-
- optind = j + 1;
-
- pattern++;
- }
-
- /* If there were empty requests at the end, ignore them */
- nr_reqs = i;
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_multiwrite(blk, reqs, nr_reqs, &total);
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("aio_multiwrite failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (qflag) {
- goto out;
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, t1);
- print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
-out:
- for (i = 0; i < nr_reqs; i++) {
- qemu_io_free(buf[i]);
- if (reqs[i].qiov != NULL) {
- qemu_iovec_destroy(&qiovs[i]);
- }
- }
- g_free(buf);
- g_free(reqs);
- g_free(qiovs);
- return 0;
-}
-
struct aio_ctx {
BlockBackend *blk;
QEMUIOVector qiov;
" used to ensure all outstanding aio requests have been completed.\n"
" -C, -- report statistics in a machine parsable format\n"
" -P, -- use a pattern to verify read data\n"
+" -i, -- treat request as invalid, for exercising stats\n"
" -v, -- dump buffer to standard output\n"
" -q, -- quiet mode, do not show I/O statistics\n"
"\n");
.cfunc = aio_read_f,
.argmin = 2,
.argmax = -1,
- .args = "[-Cqv] [-P pattern] off len [len..]",
+ .args = "[-Ciqv] [-P pattern] off len [len..]",
.oneline = "asynchronously reads a number of bytes",
.help = aio_read_help,
};
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
ctx->blk = blk;
- while ((c = getopt(argc, argv, "CP:qv")) != -1) {
+ while ((c = getopt(argc, argv, "CP:iqv")) != -1) {
switch (c) {
case 'C':
ctx->Cflag = true;
return 0;
}
break;
+ case 'i':
+ printf("injecting invalid read request\n");
+ block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
+ g_free(ctx);
+ return 0;
case 'q':
ctx->qflag = true;
break;
" used to ensure all outstanding aio requests have been completed.\n"
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
+" -f, -- use Force Unit Access semantics\n"
+" -i, -- treat request as invalid, for exercising stats\n"
" -q, -- quiet mode, do not show I/O statistics\n"
+" -u, -- with -z, allow unmapping\n"
" -z, -- write zeroes using blk_aio_write_zeroes\n"
"\n");
}
.cfunc = aio_write_f,
.argmin = 2,
.argmax = -1,
- .args = "[-Cqz] [-P pattern] off len [len..]",
+ .args = "[-Cfiquz] [-P pattern] off len [len..]",
.oneline = "asynchronously writes a number of bytes",
.help = aio_write_help,
};
int nr_iov, c;
int pattern = 0xcd;
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
+ int flags = 0;
ctx->blk = blk;
- while ((c = getopt(argc, argv, "CqP:z")) != -1) {
+ while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) {
switch (c) {
case 'C':
ctx->Cflag = true;
break;
+ case 'f':
+ flags |= BDRV_REQ_FUA;
+ break;
case 'q':
ctx->qflag = true;
break;
+ case 'u':
+ flags |= BDRV_REQ_MAY_UNMAP;
+ break;
case 'P':
pattern = parse_pattern(optarg);
if (pattern < 0) {
return 0;
}
break;
+ case 'i':
+ printf("injecting invalid write request\n");
+ block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
+ g_free(ctx);
+ return 0;
case 'z':
ctx->zflag = true;
break;
return 0;
}
+ if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) {
+ printf("-u requires -z to be specified\n");
+ g_free(ctx);
+ return 0;
+ }
+
if (ctx->zflag && ctx->Pflag) {
printf("-z and -P cannot be specified at the same time\n");
g_free(ctx);
}
ctx->qiov.size = count;
- blk_aio_write_zeroes(blk, ctx->offset, count, 0, aio_write_done, ctx);
+ blk_aio_write_zeroes(blk, ctx->offset, count, flags, aio_write_done,
+ ctx);
} else {
nr_iov = argc - optind;
ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov,
block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size,
BLOCK_ACCT_WRITE);
- blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, 0, aio_write_done, ctx);
+ blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done,
+ ctx);
}
return 0;
}
qemuio_add_command(&readv_cmd);
qemuio_add_command(&write_cmd);
qemuio_add_command(&writev_cmd);
- qemuio_add_command(&multiwrite_cmd);
qemuio_add_command(&aio_read_cmd);
qemuio_add_command(&aio_write_cmd);
qemuio_add_command(&aio_flush_cmd);
projects / qemu.git / blobdiff