#include "fio.h"
+static int root_warn;
+
static int extend_file(struct thread_data *td, struct fio_file *f)
{
int r, new_layout = 0, unlink_file = 0, flags;
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;
}
else if (f->filetype == FIO_TYPE_BD) {
ret = blockdev_invalidate_cache(f->fd);
if (ret < 0 && errno == EACCES && geteuid()) {
- log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
+ if (!root_warn) {
+ log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
+ root_warn = 1;
+ }
ret = 0;
}
} else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
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;
extend_size = total_size = 0;
need_extend = 0;
for_each_file(td, f, i) {
+ f->file_offset = td->o.start_offset;
+
if (!td->o.file_size_low) {
/*
* no file size range given, file size is equal to
f->io_size = f->real_file_size;
} else if (f->real_file_size < td->o.file_size_low ||
f->real_file_size > td->o.file_size_high) {
+ if (f->file_offset > td->o.file_size_low)
+ goto err_offset;
/*
* file size given. if it's fixed, use that. if it's a
* range, generate a random size in-between.
*/
if (td->o.file_size_low == td->o.file_size_high)
- f->io_size = td->o.file_size_low;
+ f->io_size = td->o.file_size_low - f->file_offset;
else
- f->io_size = get_rand_file_size(td);
+ f->io_size = get_rand_file_size(td) - f->file_offset;
} else
- f->io_size = f->real_file_size;
+ f->io_size = f->real_file_size - f->file_offset;
if (f->io_size == -1ULL)
total_size = -1ULL;
total_size += f->io_size;
if (f->filetype == FIO_TYPE_FILE &&
- f->io_size > f->real_file_size &&
+ (f->io_size + f->file_offset) > f->real_file_size &&
!(td->io_ops->flags & FIO_DISKLESSIO)) {
need_extend++;
- extend_size += f->io_size;
+ extend_size += (f->io_size + f->file_offset);
f->flags |= FIO_FILE_EXTEND;
- }
+ }
}
- if (!td->o.size)
+ if (!td->o.size || td->o.size > total_size)
td->o.size = total_size;
/*
*/
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) {
assert(f->filetype == FIO_TYPE_FILE);
f->flags &= ~FIO_FILE_EXTEND;
- f->real_file_size = f->io_size;
+ f->real_file_size = (f->io_size + f->file_offset);
err = extend_file(td, f);
if (err)
break;
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);
+ return 1;
}
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");
}
}
-void add_file(struct thread_data *td, const char *fname)
+int add_file(struct thread_data *td, const char *fname)
{
int cur_files = td->files_index;
char file_name[PATH_MAX];
td->files_index++;
if (f->filetype == FIO_TYPE_FILE)
td->nr_normal_files++;
+
+ return cur_files;
}
void get_file(struct fio_file *f)
f->file_name = strdup(f->file_name);
}
}
+
+/*
+ * Returns the index that matches the filename, or -1 if not there
+ */
+int get_fileno(struct thread_data *td, const char *fname)
+{
+ struct fio_file *f;
+ unsigned int i;
+
+ for_each_file(td, f, i)
+ if (!strcmp(f->file_name, fname))
+ return i;
+
+ return -1;
+}
+
+/*
+ * For log usage, where we add/open/close files automatically
+ */
+void free_release_files(struct thread_data *td)
+{
+ close_files(td);
+ td->files_index = 0;
+ td->nr_normal_files = 0;
+}
projects / fio.git / blobdiff