#include "fio.h"
#include "os.h"
+/*
+ * Check if the file exists and it's large enough.
+ */
+static int file_ok(struct thread_data *td, struct fio_file *f)
+{
+ struct stat st;
+
+ if (td->filetype != FIO_TYPE_FILE || (td->io_ops->flags & FIO_NULLIO))
+ 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;
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) {
- td->io_size = td->total_file_size;
- 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);
- break;
-
- td->io_size += f->file_size;
+ /*
+ * 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;
+ }
}
temp_stall_ts = 0;
{
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) {
td_verror(td, errno);
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 1;
}
- td->io_size += f->file_size;
+ return 0;
+}
+
+int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
+{
+ int ret = 0;
+
+ /*
+ * FIXME: add blockdev flushing too
+ */
+ 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)
+ ret = 0;
+
+ if (ret < 0) {
+ td_verror(td, errno);
+ return 1;
+ }
+
return 0;
}
return 1;
}
- if (td->invalidate_cache) {
- if (madvise(f->mmap, f->file_size, MADV_DONTNEED) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
+ if (td->invalidate_cache && file_invalidate_cache(td, f))
+ return 1;
if (td->sequential) {
if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
{
- if (td->invalidate_cache) {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
+ if (td->invalidate_cache && file_invalidate_cache(td, f))
+ return 1;
if (td->sequential) {
if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
static int setup_file(struct thread_data *td, struct fio_file *f)
{
- struct stat st;
int flags = 0;
- if (stat(f->file_name, &st) == -1) {
- if (errno != ENOENT) {
- td_verror(td, errno);
- return 1;
- }
- if (!td->create_file) {
- td_verror(td, ENOENT);
- return 1;
- }
- if (create_file(td, f))
- return 1;
- } else if (td->filetype == FIO_TYPE_FILE &&
- st.st_size < (off_t) f->file_size) {
- if (create_file(td, f))
- return 1;
- }
-
- 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;
- 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;
- 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) {
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)
{
+ struct fio_file *f;
int i;
- for (i = 0; i < td->nr_files; i++) {
- struct fio_file *f = &td->files[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) {
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