#include "fio.h"
#include "os.h"
-static int create_file(struct thread_data *td, struct fio_file *f)
+/*
+ * Check if the file exists and it's large enough.
+ */
+static int file_ok(struct thread_data *td, struct fio_file *f)
{
- unsigned long long left;
- unsigned int bs;
struct stat st;
- char *b;
- int r;
if (td->filetype != FIO_TYPE_FILE)
return 0;
- if (stat(f->file_name, &st) == -1) {
- if (!td->create_file) {
- td_verror(td, ENOENT);
- return 1;
- }
- } else if (st.st_size >= (off_t) f->file_size)
- return 0;
+ if (stat(f->file_name, &st) == -1)
+ return 1;
+ else if (st.st_size < (off_t) f->file_size)
+ return 1;
+
+ return 0;
+}
+
+static int create_file(struct thread_data *td, struct fio_file *f)
+{
+ unsigned long long left;
+ unsigned int bs;
+ char *b;
+ int r;
f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (f->fd < 0) {
goto err;
}
- b = malloc(td->max_bs);
- memset(b, 0, td->max_bs);
+ if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
+ td_verror(td, errno);
+ goto err;
+ }
+
+ b = malloc(td->max_bs[DDIR_WRITE]);
+ memset(b, 0, td->max_bs[DDIR_WRITE]);
left = f->file_size;
while (left && !td->terminate) {
- bs = td->max_bs;
+ bs = td->max_bs[DDIR_WRITE];
if (bs > left)
bs = left;
static int create_files(struct thread_data *td)
{
struct fio_file *f;
- int i, err;
+ int i, err, need_create;
+
+ for_each_file(td, f, i)
+ f->file_size = td->total_file_size / td->nr_files;
/*
* unless specifically asked for overwrite, let normal io extend it
*/
- if (!td->overwrite) {
- for_each_file(td, f, i)
- f->file_size = td->total_file_size / td->nr_files;
-
+ if (!td->overwrite)
return 0;
+
+ need_create = 0;
+ if (td->filetype == FIO_TYPE_FILE) {
+ for_each_file(td, f, i) {
+ int file_there = !file_ok(td, f);
+
+ if (file_there && td->ddir == DDIR_WRITE &&
+ !td->overwrite) {
+ unlink(f->file_name);
+ file_there = 0;
+ }
+
+ need_create += !file_there;
+ }
}
+ if (!need_create)
+ return 0;
+
if (!td->total_file_size) {
log_err("Need size for create\n");
td_verror(td, EINVAL);
}
temp_stall_ts = 1;
- fprintf(f_out, "%s: Laying out IO file(s) (%LuMiB)\n",
- td->name, td->total_file_size >> 20);
+ fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n",
+ td->name, td->nr_uniq_files,
+ (td->total_file_size >> 20) / td->nr_uniq_files,
+ td->total_file_size >> 20);
err = 0;
for_each_file(td, f, i) {
- f->file_size = td->total_file_size / td->nr_files;
- err = create_file(td, f);
- if (err)
- break;
+ /*
+ * Only unlink files that we created.
+ */
+ f->unlink = 0;
+ if (file_ok(td, f)) {
+ f->unlink = td->unlink;
+ err = create_file(td, f);
+ if (err)
+ break;
+ }
}
- td->io_size = td->total_file_size;
temp_stall_ts = 0;
return err;
}
if (!f->file_size || f->file_size > f->real_file_size)
f->file_size = f->real_file_size;
- }
+ } else
+ f->real_file_size = f->file_size;
- f->file_size -= f->file_offset;
return 0;
}
{
int flags = 0;
+ if (td->io_ops->flags & FIO_NETIO)
+ return 0;
if (td->odirect)
flags |= OS_O_DIRECT;
+ if (td->sync_io)
+ flags |= O_SYNC;
if (td_write(td) || td_rw(td)) {
+ flags |= O_RDWR;
+
if (td->filetype == FIO_TYPE_FILE) {
if (!td->overwrite)
flags |= O_TRUNC;
flags |= O_CREAT;
}
- if (td->sync_io)
- flags |= O_SYNC;
-
- flags |= O_RDWR;
f->fd = open(f->file_name, flags, 0600);
} else {
return 0;
}
+int open_files(struct thread_data *td)
+{
+ struct fio_file *f;
+ int i, err = 0;
+
+ for_each_file(td, f, i) {
+ err = setup_file(td, f);
+ if (err)
+ break;
+ }
+
+ if (!err)
+ return 0;
+
+ for_each_file(td, f, i) {
+ if (f->fd != -1) {
+ close(f->fd);
+ f->fd = -1;
+ }
+ }
+
+ return err;
+}
+
int setup_files(struct thread_data *td)
{
struct fio_file *f;
- int i, err;
+ int err, i;
/*
* if ioengine defines a setup() method, it's responsible for
if (create_files(td))
return 1;
- for_each_file(td, f, i) {
- err = setup_file(td, f);
- if (err)
- break;
- }
+ err = open_files(td);
+ if (err)
+ return err;
+ /*
+ * Recalculate the total file size now that files are set up.
+ */
+ td->total_file_size = 0;
+ for_each_file(td, f, i)
+ td->total_file_size += f->file_size;
+
+ td->io_size = td->total_file_size;
if (td->io_size == 0) {
log_err("%s: no io blocks\n", td->name);
td_verror(td, EINVAL);
td->total_io_size = td->io_size * td->loops;
if (td->io_ops->flags & FIO_MMAPIO)
- return setup_files_mmap(td);
+ err = setup_files_mmap(td);
else
- return setup_files_plain(td);
+ err = setup_files_plain(td);
+
+ for_each_file(td, f, i) {
+ if (f->fd != -1) {
+ close(f->fd);
+ f->fd = -1;
+ }
+ }
+
+ return err;
}
void close_files(struct thread_data *td)
int i;
for_each_file(td, f, i) {
+ if (!td->filename && f->unlink &&
+ td->filetype == FIO_TYPE_FILE) {
+ unlink(f->file_name);
+ free(f->file_name);
+ f->file_name = NULL;
+ }
if (f->fd != -1) {
- if (td->unlink && td->filetype == FIO_TYPE_FILE)
- unlink(f->file_name);
close(f->fd);
f->fd = -1;
}
f->mmap = NULL;
}
}
+
+ td->filename = NULL;
+ free(td->files);
+ td->files = NULL;
+ td->nr_files = 0;
}
projects / fio.git / blobdiff