}
}
- flags = O_WRONLY | O_CREAT;
+ flags = O_WRONLY;
+ if (td->o.allow_create)
+ flags |= O_CREAT;
if (new_layout)
flags |= O_TRUNC;
dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
f->fd = open(f->file_name, flags, 0644);
if (f->fd < 0) {
- td_verror(td, errno, "open");
+ int err = errno;
+
+ if (err == ENOENT && !td->o.allow_create)
+ log_err("fio: file creation disallowed by "
+ "allow_file_create=0\n");
+ else
+ td_verror(td, err, "open");
return 1;
}
return ret;
}
-static unsigned long long get_rand_file_size(struct thread_data *td)
+unsigned long long get_rand_file_size(struct thread_data *td)
{
unsigned long long ret, sized;
+ uint64_t frand_max;
unsigned long r;
+ frand_max = rand_max(&td->file_size_state);
r = __rand(&td->file_size_state);
sized = td->o.file_size_high - td->o.file_size_low;
- ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
+ ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
ret += td->o.file_size_low;
ret -= (ret % td->o.rw_min_bs);
return ret;
unsigned long long off,
unsigned long long len)
{
- int ret = 0;
+ int errval = 0, ret = 0;
#ifdef CONFIG_ESX
return 0;
dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
len);
- if (td->io_ops->invalidate)
+ if (td->io_ops->invalidate) {
ret = td->io_ops->invalidate(td, f);
- else if (f->filetype == FIO_TYPE_FILE)
+ if (ret < 0)
+ errval = ret;
+ } else if (f->filetype == FIO_TYPE_FILE) {
ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
- else if (f->filetype == FIO_TYPE_BD) {
+ if (ret)
+ errval = ret;
+ } else if (f->filetype == FIO_TYPE_BD) {
+ int retry_count = 0;
+
ret = blockdev_invalidate_cache(f);
+ while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
+ /*
+ * Linux multipath devices reject ioctl while
+ * the maps are being updated. That window can
+ * last tens of milliseconds; we'll try up to
+ * a quarter of a second.
+ */
+ usleep(10000);
+ ret = blockdev_invalidate_cache(f);
+ }
if (ret < 0 && errno == EACCES && geteuid()) {
if (!root_warn) {
log_err("fio: only root may flush block "
}
ret = 0;
}
+ if (ret < 0)
+ errval = errno;
} else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
ret = 0;
* function to flush eg block device caches. So just warn and
* continue on our way.
*/
- if (ret) {
- log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
- ret = 0;
- }
+ if (errval)
+ log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
return 0;
dprint(FD_FILE, "fd open %s\n", f->file_name);
- if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
- log_err("fio: trim only applies to block device\n");
- return 1;
- }
-
if (!strcmp(f->file_name, "-")) {
if (td_rw(td)) {
log_err("fio: can't read/write to stdin/out\n");
}
if (td->o.sync_io)
flags |= O_SYNC;
- if (td->o.create_on_open)
+ if (td->o.create_on_open && td->o.allow_create)
flags |= O_CREAT;
skip_flags:
if (f->filetype != FIO_TYPE_FILE)
if (!read_only)
flags |= O_RDWR;
- if (f->filetype == FIO_TYPE_FILE)
+ if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
flags |= O_CREAT;
if (is_std)
fm = flist_entry(n, struct fio_mount, list);
flist_del(&fm->list);
- sz = get_fs_size(fm->base);
+ sz = get_fs_free_size(fm->base);
if (sz && sz != -1ULL)
ret += sz;
uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
{
struct thread_options *o = &td->o;
+ uint64_t offset;
if (o->file_append && f->filetype == FIO_TYPE_FILE)
return f->real_file_size;
- return td->o.start_offset +
- td->subjob_number * td->o.offset_increment;
+ offset = td->o.start_offset + td->subjob_number * td->o.offset_increment;
+ if (offset % td_max_bs(td))
+ offset -= (offset % td_max_bs(td));
+
+ return offset;
}
/*
*/
total_size = 0;
for_each_file(td, f, i) {
+ f->fileno = i;
if (f->real_file_size == -1ULL)
total_size = -1ULL;
else
}
}
+ if (td->o.block_error_hist) {
+ int len;
+
+ assert(td->o.nr_files == 1); /* checked in fixup_options */
+ f = td->files[0];
+ len = f->io_size / td->o.bs[DDIR_TRIM];
+ if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
+ log_err("fio: cannot calculate block histogram with "
+ "%d trim blocks, maximum %d\n",
+ len, MAX_NR_BLOCK_INFOS);
+ td_verror(td, EINVAL, "block_error_hist");
+ goto err_out;
+ }
+
+ td->ts.nr_block_infos = len;
+ for (i = 0; i < len; i++)
+ td->ts.block_infos[i] =
+ BLOCK_INFO(0, BLOCK_STATE_UNINIT);
+ } else
+ td->ts.nr_block_infos = 0;
+
if (!o->size || (total_size && o->size > total_size))
o->size = total_size;
*/
if (need_extend) {
temp_stall_ts = 1;
- if (output_format == FIO_OUTPUT_NORMAL)
+ if (output_format & FIO_OUTPUT_NORMAL)
log_info("%s: Laying out IO file(s) (%u file(s) /"
" %lluMB)\n", o->name, need_extend,
extend_size >> 20);
else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
- gauss_init(&f->gauss, nranges, td->o.gauss_dev, seed);
+ gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
return 1;
}
return 1;
}
+/*
+ * Check if the number of blocks exceeds the randomness capability of
+ * the selected generator. Tausworthe is 32-bit, the others are fullly
+ * 64-bit capable.
+ */
+static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
+ uint64_t blocks)
+{
+ if (blocks <= FRAND32_MAX)
+ return 0;
+ if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
+ return 0;
+
+ /*
+ * If the user hasn't specified a random generator, switch
+ * to tausworthe64 with informational warning. If the user did
+ * specify one, just warn.
+ */
+ log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
+ f->file_name);
+
+ if (!fio_option_is_set(&td->o, random_generator)) {
+ log_info("fio: Switching to tausworthe64. Use the "
+ "random_generator= option to get rid of this "
+ " warning.\n");
+ td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
+ return 0;
+ }
+
+ /*
+ * Just make this information to avoid breaking scripts.
+ */
+ log_info("fio: Use the random_generator= option to switch to lfsr or "
+ "tausworthe64.\n");
+ return 0;
+}
+
int init_random_map(struct thread_data *td)
{
unsigned long long blocks;
blocks = fsize / (unsigned long long) td->o.rw_min_bs;
+ if (check_rand_gen_limits(td, f, blocks))
+ return 1;
+
if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
unsigned long seed;
dprint(FD_FILE, "add file %s\n", fname);
if (td->o.directory)
- len = set_name_idx(file_name, td->o.directory, numjob);
+ len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob);
sprintf(file_name + len, "%s", fname);
projects / fio.git / blobdiff