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Document loading external io engines
[fio.git]
/
filesetup.c
diff --git
a/filesetup.c
b/filesetup.c
index 3f9bdb8333f989057529652eee34f5a6a0378116..d8135ef08342ce05b0201fdf2fb8e8a8760afc3c 100644
(file)
--- a/
filesetup.c
+++ b/
filesetup.c
@@
-15,12
+15,18
@@
static int file_ok(struct thread_data *td, struct fio_file *f)
{
struct stat st;
{
struct stat st;
- if (td->filetype != FIO_TYPE_FILE)
+ if (td->filetype != FIO_TYPE_FILE
|| (td->io_ops->flags & FIO_NULLIO)
)
return 0;
return 0;
- if (stat(f->file_name, &st) == -1)
+ if (
l
stat(f->file_name, &st) == -1)
return 1;
return 1;
- else if (st.st_size < (off_t) f->file_size)
+
+ /*
+ * if it's a special file, size is always ok for now
+ */
+ if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
+ return 0;
+ if (st.st_size < (off_t) f->file_size)
return 1;
return 0;
return 1;
return 0;
@@
-35,21
+41,26
@@
static int create_file(struct thread_data *td, struct fio_file *f)
f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (f->fd < 0) {
f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (f->fd < 0) {
- td_verror(td, errno);
+ td_verror(td, errno
, "open"
);
return 1;
}
if (ftruncate(f->fd, f->file_size) == -1) {
return 1;
}
if (ftruncate(f->fd, f->file_size) == -1) {
- td_verror(td, errno);
+ td_verror(td, errno
, "ftruncate"
);
goto err;
}
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, "posix_fallocate");
+ 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) {
left = f->file_size;
while (left && !td->terminate) {
- bs = td->max_bs;
+ bs = td->max_bs
[DDIR_WRITE]
;
if (bs > left)
bs = left;
if (bs > left)
bs = left;
@@
-60,9
+71,9
@@
static int create_file(struct thread_data *td, struct fio_file *f)
continue;
} else {
if (r < 0)
continue;
} else {
if (r < 0)
- td_verror(td, errno);
+ td_verror(td, errno
, "write"
);
else
else
- td_verror(td, EIO);
+ td_verror(td, EIO
, "write"
);
break;
}
break;
}
@@
-88,23
+99,27
@@
static int create_files(struct thread_data *td)
struct fio_file *f;
int i, err, need_create;
struct fio_file *f;
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
*/
/*
* 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;
return 0;
- }
need_create = 0;
need_create = 0;
- for_each_file(td, f, i) {
- if (td->filetype == FIO_TYPE_FILE) {
- f->file_size = td->total_file_size / td->nr_files;
- need_create += file_ok(td, f);
- } else
- td->total_file_size += f->file_size;
+ if (td->filetype == FIO_TYPE_FILE) {
+ for_each_file(td, f, i) {
+ int file_there = !file_ok(td, f);
+
+ if (file_there && td_write(td) && !td->overwrite) {
+ unlink(f->file_name);
+ file_there = 0;
+ }
+
+ need_create += !file_there;
+ }
}
if (!need_create)
}
if (!need_create)
@@
-112,19
+127,24
@@
static int create_files(struct thread_data *td)
if (!td->total_file_size) {
log_err("Need size for create\n");
if (!td->total_file_size) {
log_err("Need size for create\n");
- td_verror(td, EINVAL);
+ td_verror(td, EINVAL
, "file_size"
);
return 1;
}
temp_stall_ts = 1;
return 1;
}
temp_stall_ts = 1;
- fprintf(f_out, "%s: Laying out IO file(s) (%
d
x %LuMiB == %LuMiB)\n",
- td->name, td->nr_files,
- (td->total_file_size >> 20) / td->nr_files,
+ 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) {
td->total_file_size >> 20);
err = 0;
for_each_file(td, f, i) {
+ /*
+ * Only unlink files that we created.
+ */
+ f->unlink = 0;
if (file_ok(td, f)) {
if (file_ok(td, f)) {
+ f->unlink = td->unlink;
err = create_file(td, f);
if (err)
break;
err = create_file(td, f);
if (err)
break;
@@
-139,9
+159,19
@@
static int file_size(struct thread_data *td, struct fio_file *f)
{
struct stat st;
{
struct stat st;
+ /*
+ * if we are not doing real io, just pretend the file is as large
+ * as the size= given. this works fine with nrfiles > 1 as well,
+ * we only really care about it being at least as big as size=
+ */
+ if (td->io_ops->flags & FIO_NULLIO) {
+ f->real_file_size = f->file_size = td->total_file_size;
+ return 0;
+ }
+
if (td->overwrite) {
if (fstat(f->fd, &st) == -1) {
if (td->overwrite) {
if (fstat(f->fd, &st) == -1) {
- td_verror(td, errno);
+ td_verror(td, errno
, "fstat"
);
return 1;
}
return 1;
}
@@
-149,9
+179,9
@@
static int file_size(struct thread_data *td, struct fio_file *f)
if (!f->file_size || f->file_size > f->real_file_size)
f->file_size = f->real_file_size;
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;
}
return 0;
}
@@
-162,7
+192,7
@@
static int bdev_size(struct thread_data *td, struct fio_file *f)
r = blockdev_size(f->fd, &bytes);
if (r) {
r = blockdev_size(f->fd, &bytes);
if (r) {
- td_verror(td, r);
+ td_verror(td, r
, "blockdev_size"
);
return 1;
}
return 1;
}
@@
-209,19
+239,21
@@
int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
*/
if (td->io_ops->flags & FIO_MMAPIO)
ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
*/
if (td->io_ops->flags & FIO_MMAPIO)
ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
- else if (td->filetype == FIO_TYPE_FILE)
- ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
- else if (td->filetype == FIO_TYPE_BD)
- ret = blockdev_invalidate_cache(f->fd);
- else if (td->filetype == FIO_TYPE_CHAR)
+ else if (td->filetype == FIO_TYPE_FILE) {
+ if (!td->odirect)
+ ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
+ } else if (td->filetype == FIO_TYPE_BD) {
+ if (!td->odirect)
+ ret = blockdev_invalidate_cache(f->fd);
+ } else if (td->filetype == FIO_TYPE_CHAR)
ret = 0;
if (ret < 0) {
ret = 0;
if (ret < 0) {
- td_verror(td, errno);
+ td_verror(td, errno
, "invalidate_cache"
);
return 1;
}
return 1;
}
- return
0
;
+ return
ret
;
}
static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
}
static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
@@
-241,21
+273,21
@@
static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
if (f->mmap == MAP_FAILED) {
f->mmap = NULL;
f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
if (f->mmap == MAP_FAILED) {
f->mmap = NULL;
- td_verror(td, errno);
+ td_verror(td, errno
, "mmap"
);
return 1;
}
if (td->invalidate_cache && file_invalidate_cache(td, f))
return 1;
return 1;
}
if (td->invalidate_cache && file_invalidate_cache(td, f))
return 1;
- if (
td->sequential
) {
+ if (
!td_random(td)
) {
if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
+ td_verror(td, errno
, "madvise"
);
return 1;
}
} else {
if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
return 1;
}
} else {
if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
- td_verror(td, errno);
+ td_verror(td, errno
, "madvise"
);
return 1;
}
}
return 1;
}
}
@@
-282,14
+314,14
@@
static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
if (td->invalidate_cache && file_invalidate_cache(td, f))
return 1;
if (td->invalidate_cache && file_invalidate_cache(td, f))
return 1;
- if (
td->sequential
) {
+ if (
!td_random(td)
) {
if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
+ td_verror(td, errno
, "fadvise"
);
return 1;
}
} else {
if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
return 1;
}
} else {
if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
- td_verror(td, errno);
+ td_verror(td, errno
, "fadvise"
);
return 1;
}
}
return 1;
}
}
@@
-315,47
+347,85
@@
static int setup_file(struct thread_data *td, struct fio_file *f)
{
int flags = 0;
{
int flags = 0;
- if (td->odirect)
- flags |= OS_O_DIRECT;
-
- if (td_write(td) || td_rw(td)) {
- if (td->filetype == FIO_TYPE_FILE) {
- if (!td->overwrite)
- flags |= O_TRUNC;
+ if (td->io_ops->flags & FIO_NETIO)
+ return 0;
- flags |= O_CREAT;
- }
+ /*
+ * we need a valid file descriptor, but don't create a real file.
+ * lets just dup stdout, seems like a sensible approach.
+ */
+ if (td->io_ops->flags & FIO_NULLIO)
+ f->fd = dup(STDOUT_FILENO);
+ else {
+ if (td->odirect)
+ flags |= OS_O_DIRECT;
if (td->sync_io)
flags |= O_SYNC;
if (td->sync_io)
flags |= O_SYNC;
- flags |= O_RDWR;
-
- f->fd = open(f->file_name, flags, 0600);
- } else {
- if (td->filetype == FIO_TYPE_CHAR)
+ if (td_write(td) || td_rw(td)) {
flags |= O_RDWR;
flags |= O_RDWR;
- else
- flags |= O_RDONLY;
- f->fd = open(f->file_name, flags);
+ if (td->filetype == FIO_TYPE_FILE) {
+ if (!td->overwrite)
+ flags |= O_TRUNC;
+
+ flags |= O_CREAT;
+ }
+
+ f->fd = open(f->file_name, flags, 0600);
+ } else {
+ if (td->filetype == FIO_TYPE_CHAR)
+ flags |= O_RDWR;
+ else
+ flags |= O_RDONLY;
+
+ f->fd = open(f->file_name, flags);
+ }
}
if (f->fd == -1) {
}
if (f->fd == -1) {
- td_verror(td, errno);
+ int __e = errno;
+
+ td_verror(td, __e, "open");
+ if (__e == EINVAL && td->odirect)
+ log_err("fio: destination does not support O_DIRECT\n");
return 1;
}
if (get_file_size(td, f))
return 1;
return 1;
}
if (get_file_size(td, f))
return 1;
- td->total_file_size += f->file_size;
return 0;
}
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 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 ioengine defines a setup() method, it's responsible for
@@
-367,20
+437,21
@@
int setup_files(struct thread_data *td)
if (create_files(td))
return 1;
if (create_files(td))
return 1;
- err = 0;
- for_each_file(td, f, i) {
- err = setup_file(td, f);
- if (err)
- break;
- }
-
+ err = open_files(td);
if (err)
return err;
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->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_verror(td, EINVAL
, "total_file_size"
);
return 1;
}
return 1;
}
@@
-390,9
+461,18
@@
int setup_files(struct thread_data *td)
td->total_io_size = td->io_size * td->loops;
if (td->io_ops->flags & FIO_MMAPIO)
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
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)
}
void close_files(struct thread_data *td)
@@
-401,9
+481,13
@@
void close_files(struct thread_data *td)
int i;
for_each_file(td, f, i) {
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 (f->fd != -1) {
- if (td->unlink && td->filetype == FIO_TYPE_FILE)
- unlink(f->file_name);
close(f->fd);
f->fd = -1;
}
close(f->fd);
f->fd = -1;
}
@@
-412,4
+496,9
@@
void close_files(struct thread_data *td)
f->mmap = NULL;
}
}
f->mmap = NULL;
}
}
+
+ td->filename = NULL;
+ free(td->files);
+ td->files = NULL;
+ td->nr_files = 0;
}
}