unsigned int bs;
char *b;
+ if (read_only) {
+ log_err("fio: refusing extend of file due to read-only\n");
+ return 0;
+ }
+
/*
* check if we need to lay the file out complete again. fio
* does that for operations involving reads, or for writes
return 1;
}
+ if (!new_layout)
+ goto done;
+
if (ftruncate(f->fd, f->real_file_size) == -1) {
td_verror(td, errno, "ftruncate");
goto err;
}
- if (!new_layout)
- goto done;
-
if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
td_verror(td, errno, "posix_fallocate");
goto err;
long r;
r = os_random_long(&td->file_size_state);
- ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
+ ret = td->o.file_size_low + (unsigned long long) ((double) (td->o.file_size_high - td->o.file_size_low) * (r / (RAND_MAX + 1.0)));
ret -= (ret % td->o.rw_min_bs);
return ret;
}
flags |= OS_O_DIRECT;
if (td->o.sync_io)
flags |= O_SYNC;
+ if (f->filetype != FIO_TYPE_FILE)
+ flags |= O_NOATIME;
+open_again:
if (td_write(td)) {
+ assert(!read_only);
+
flags |= O_RDWR;
if (f->filetype == FIO_TYPE_FILE)
else
f->fd = open(f->file_name, flags, 0600);
} else {
- if (f->filetype == FIO_TYPE_CHAR)
+ if (f->filetype == FIO_TYPE_CHAR && !read_only)
flags |= O_RDWR;
else
flags |= O_RDONLY;
char buf[FIO_VERROR_SIZE];
int __e = errno;
+ if (errno == EPERM && (flags & O_NOATIME)) {
+ flags &= ~O_NOATIME;
+ goto open_again;
+ }
+
snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
td_verror(td, __e, buf);
/*
* device/file sizes are zero and no size given, punt
*/
- if ((!total_size || total_size == -1ULL) && !td->o.size) {
+ if ((!total_size || total_size == -1ULL) && !td->o.size &&
+ !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
log_err("%s: you need to specify size=\n", td->o.name);
td_verror(td, EINVAL, "total_file_size");
return 1;
* zero, set it to the real file size.
*/
f->io_size = td->o.size / td->o.nr_files;
- if (!f->io_size) {
+ if ((!f->io_size || f->io_size > f->real_file_size) &&
+ f->real_file_size) {
if (f->file_offset > f->real_file_size)
goto err_offset;
- f->io_size = f->real_file_size - f->file_offset;
+ if (f->file_offset)
+ f->io_size = f->real_file_size - f->file_offset;
}
} else if (f->real_file_size < td->o.file_size_low ||
f->real_file_size > td->o.file_size_high) {
*/
if (need_extend) {
temp_stall_ts = 1;
- log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
+ log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
td->o.name, need_extend, extend_size >> 20);
for_each_file(td, f, i) {
if (!td->o.zone_size)
td->o.zone_size = td->o.size;
- td->total_io_size = td->o.size * td->o.loops;
+ /*
+ * iolog already set the total io size, if we read back
+ * stored entries.
+ */
+ if (!td->o.read_iolog_file)
+ td->total_io_size = td->o.size * td->o.loops;
return 0;
err_offset:
log_err("%s: you need to specify valid offset=\n", td->o.name);
int init_random_map(struct thread_data *td)
{
- int num_maps, blocks;
+ unsigned long long blocks, num_maps;
struct fio_file *f;
unsigned int i;
return 0;
for_each_file(td, f, i) {
- blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
- num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
+ blocks = (f->real_file_size + td->o.rw_min_bs - 1) / (unsigned long long) td->o.rw_min_bs;
+ num_maps = (blocks + BLOCKS_PER_MAP-1)/ (unsigned long long) BLOCKS_PER_MAP;
f->file_map = malloc(num_maps * sizeof(long));
if (!f->file_map) {
log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");