#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_DISKLESSIO))
+ return 0;
+
+ if (lstat(f->file_name, &st) == -1)
+ return 1;
+
+ /*
+ * 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;
+}
+
static int create_file(struct thread_data *td, struct fio_file *f)
{
unsigned long long left;
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) {
- td_verror(td, errno);
+ td_verror(td, errno, "ftruncate");
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) {
- bs = td->max_bs;
+ bs = td->max_bs[DDIR_WRITE];
if (bs > left)
bs = left;
continue;
} else {
if (r < 0)
- td_verror(td, errno);
+ td_verror(td, errno, "write");
else
- td_verror(td, EIO);
+ td_verror(td, EIO, "write");
break;
}
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_write(td) && !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);
+ td_verror(td, EINVAL, "file_size");
return 1;
}
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;
if (td->overwrite) {
if (fstat(f->fd, &st) == -1) {
- td_verror(td, errno);
+ td_verror(td, errno, "fstat");
return 1;
}
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;
}
r = blockdev_size(f->fd, &bytes);
if (r) {
- td_verror(td, r);
+ td_verror(td, r, "blockdev_size");
return 1;
}
return 1;
}
- td->io_size += f->file_size;
return 0;
}
-static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
+int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
{
- int flags;
-
- if (td_rw(td))
- flags = PROT_READ | PROT_WRITE;
- else if (td_write(td)) {
- flags = PROT_WRITE;
+ int ret = 0;
- if (td->verify != VERIFY_NONE)
- flags |= PROT_READ;
- } else
- flags = PROT_READ;
+ if (!td->invalidate_cache)
+ return 0;
+ if (td->odirect)
+ return 0;
- 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);
+ /*
+ * FIXME: add blockdev flushing too
+ */
+ if (f->mmap)
+ 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, "invalidate_cache");
return 1;
}
- if (td->invalidate_cache) {
- if (madvise(f->mmap, f->file_size, MADV_DONTNEED) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
-
- if (td->sequential) {
- if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
- }
- } else {
- if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
-
- return 0;
-}
-
-static int setup_files_mmap(struct thread_data *td)
-{
- struct fio_file *f;
- int i, err = 0;
-
- for_each_file(td, f, i) {
- err = __setup_file_mmap(td, f);
- if (err)
- break;
- }
-
- return err;
-}
-
-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->sequential) {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
- }
- } else {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
-
- return 0;
+ return ret;
}
-static int setup_files_plain(struct thread_data *td)
+void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
{
- struct fio_file *f;
- int i, err = 0;
-
- for_each_file(td, f, i) {
- err = __setup_file_plain(td, f);
- if (err)
- break;
- }
-
- return err;
+ close(f->fd);
+ f->fd = -1;
}
-static int setup_file(struct thread_data *td, struct fio_file *f)
+int generic_open_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->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 {
}
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;
+ goto err;
+
+ if (file_invalidate_cache(td, f))
+ goto err;
+
+ if (!td_random(td)) {
+ if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
+ td_verror(td, errno, "fadvise");
+ goto err;
+ }
+ } else {
+ if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
+ td_verror(td, errno, "fadvise");
+ goto err;
+ }
+ }
return 0;
+err:
+ close(f->fd);
+ return 1;
+}
+
+int open_files(struct thread_data *td)
+{
+ struct fio_file *f;
+ int i, err = 0;
+
+ for_each_file(td, f, i) {
+ err = td_io_open_file(td, f);
+ if (err)
+ break;
+
+ if (td->open_files == td->nr_open_files)
+ break;
+ }
+
+ if (!err)
+ return 0;
+
+ for_each_file(td, f, i)
+ td_io_close_file(td, f);
+
+ 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->total_file_size = (td->total_file_size * td->nr_files) / td->open_files;
+ 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;
}
td->total_io_size = td->io_size * td->loops;
- if (td->io_ops->flags & FIO_MMAPIO)
- return setup_files_mmap(td);
- else
- return setup_files_plain(td);
+ for_each_file(td, f, i)
+ td_io_close_file(td, f);
+
+ 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];
-
- if (f->fd != -1) {
- close(f->fd);
- f->fd = -1;
- }
- if (f->mmap) {
- munmap(f->mmap, f->file_size);
- f->mmap = NULL;
+ 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;
}
+
+ td_io_close_file(td, f);
}
+
+ td->filename = NULL;
+ free(td->files);
+ td->files = NULL;
+ td->nr_files = 0;
}
projects / fio.git / blobdiff