#include <fcntl.h>
#include <string.h>
#include <assert.h>
+#include <dirent.h>
#include <sys/stat.h>
#include <sys/mman.h>
+#include <sys/types.h>
#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)
+ if (f->filetype != FIO_TYPE_FILE ||
+ (td->io_ops->flags & FIO_DISKLESSIO))
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)
+ 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;
+ unsigned int bs;
+ char *b;
+ int r;
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;
+ }
+
+ if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
+ td_verror(td, errno, "posix_fallocate");
goto err;
}
- b = malloc(td->max_bs);
- memset(b, 0, td->max_bs);
+ 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;
}
return 1;
}
+static unsigned long long set_rand_file_size(struct thread_data *td,
+ unsigned long long total_size)
+{
+ unsigned long long upper = total_size;
+ unsigned long long ret;
+ long r;
+
+ if (upper > td->file_size_high)
+ upper = td->file_size_high;
+ else if (upper < td->file_size_low)
+ return 0;
+ else if (!upper)
+ return 0;
+
+ r = os_random_long(&td->file_size_state);
+ ret = td->file_size_low + (unsigned long long) ((double) upper * (r / (RAND_MAX + 1.0)));
+ ret -= (ret % td->rw_min_bs);
+ if (ret > upper)
+ ret = upper;
+ return ret;
+}
+
static int create_files(struct thread_data *td)
{
struct fio_file *f;
- int i, err;
+ int err, need_create, can_extend;
+ unsigned long long total_file_size, local_file_size, create_size;
+ unsigned int i, new_files;
+
+ new_files = 0;
+ total_file_size = td->total_file_size;
+ for_each_file(td, f, i) {
+ unsigned long long s;
+
+ f->file_offset = td->start_offset;
+
+ if (f->filetype != FIO_TYPE_FILE)
+ continue;
+
+ if (f->flags & FIO_FILE_EXISTS) {
+ s = f->file_size;
+ if (s > total_file_size)
+ s = total_file_size;
+
+ total_file_size -= s;
+ } else
+ new_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;
-
+ can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
+ if (can_extend)
return 0;
+
+ local_file_size = total_file_size;
+ if (!local_file_size)
+ local_file_size = -1;
+
+ total_file_size = 0;
+ need_create = 0;
+ create_size = 0;
+ for_each_file(td, f, i) {
+ int file_there;
+
+ if (f->filetype != FIO_TYPE_FILE)
+ continue;
+ if (f->flags & FIO_FILE_EXISTS) {
+ total_file_size += f->file_size;
+ continue;
+ }
+
+ if (!td->file_size_low)
+ f->file_size = total_file_size / new_files;
+ else {
+ /*
+ * If we don't have enough space left for a file
+ * of the minimum size, bail.
+ */
+ if (local_file_size < td->file_size_low) {
+ log_info("fio: limited to %d files\n", i);
+ new_files -= (td->nr_files - i);
+ td->nr_files = i;
+ break;
+ }
+
+ f->file_size = set_rand_file_size(td, local_file_size);
+ local_file_size -= f->file_size;
+ }
+
+ total_file_size += f->file_size;
+ create_size += f->file_size;
+ 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 (!td->total_file_size) {
+ if (!need_create)
+ return 0;
+
+ if (!td->total_file_size && !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);
+ log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
+ td->name, new_files, create_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;
-
- td->io_size += f->file_size;
+ /*
+ * Only unlink files that we created.
+ */
+ f->flags &= ~FIO_FILE_UNLINK;
+ if (file_ok(td, f)) {
+ if (td->unlink)
+ f->flags |= FIO_FILE_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;
}
{
int ret = 0;
- if (td->filetype == FIO_TYPE_FILE)
- ret = file_size(td, f);
- else if (td->filetype == FIO_TYPE_BD)
+ if (f->filetype == FIO_TYPE_FILE) {
+ if (!(f->flags & FIO_FILE_EXISTS))
+ ret = file_size(td, f);
+ } else if (f->filetype == FIO_TYPE_BD)
ret = bdev_size(td, f);
else
f->real_file_size = -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->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 (f->filetype == FIO_TYPE_FILE) {
+ ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
+ } else if (f->filetype == FIO_TYPE_BD) {
+ ret = blockdev_invalidate_cache(f->fd);
+ } else if (f->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;
+ return ret;
}
-static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
+void generic_close_file(struct thread_data fio_unused *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;
-}
-
-static int setup_files_plain(struct thread_data *td)
-{
- 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)
{
int flags = 0;
if (td->odirect)
flags |= OS_O_DIRECT;
+ if (td->sync_io)
+ flags |= O_SYNC;
if (td_write(td) || td_rw(td)) {
- if (td->filetype == FIO_TYPE_FILE) {
- if (!td->overwrite)
- flags |= O_TRUNC;
+ flags |= O_RDWR;
+ if (f->filetype == FIO_TYPE_FILE)
flags |= O_CREAT;
- }
- 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 (f->filetype == FIO_TYPE_CHAR)
flags |= O_RDWR;
else
flags |= O_RDONLY;
}
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");
+ if (__e == EMFILE)
+ log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->nr_files);
return 1;
}
if (get_file_size(td, f))
- return 1;
+ goto err;
+
+ if (td->invalidate_cache && 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;
+ unsigned int i;
+ int 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;
+ unsigned int i;
+ int err;
/*
* 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_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;
+ unsigned int i;
for_each_file(td, f, i) {
- if (f->fd != -1) {
- if (td->unlink && td->filetype == FIO_TYPE_FILE)
- unlink(f->file_name);
- close(f->fd);
- f->fd = -1;
+ if (!f->file_name && (f->flags & FIO_FILE_UNLINK) &&
+ f->filetype == FIO_TYPE_FILE) {
+ unlink(f->file_name);
+ free(f->file_name);
+ f->file_name = NULL;
}
- if (f->mmap) {
- munmap(f->mmap, f->file_size);
- f->mmap = NULL;
+
+ td_io_close_file(td, f);
+
+ if (f->file_map)
+ free(f->file_map);
+ }
+
+ td->filename = NULL;
+ td->files = NULL;
+ td->nr_files = 0;
+}
+
+static void get_file_type(struct fio_file *f)
+{
+ struct stat sb;
+
+ f->filetype = FIO_TYPE_FILE;
+
+ if (!lstat(f->file_name, &sb)) {
+ f->flags |= FIO_FILE_EXISTS;
+
+ if (S_ISBLK(sb.st_mode))
+ f->filetype = FIO_TYPE_BD;
+ else if (S_ISCHR(sb.st_mode))
+ f->filetype = FIO_TYPE_CHAR;
+ else {
+ /*
+ * might as well do this here, and save a stat later on
+ */
+ f->real_file_size = sb.st_size;
+ f->file_size = f->real_file_size;
}
}
}
+
+void add_file(struct thread_data *td, const char *fname)
+{
+ int cur_files = td->files_index;
+ struct fio_file *f;
+
+ td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
+
+ f = &td->files[cur_files];
+ memset(f, 0, sizeof(*f));
+ f->fd = -1;
+ f->file_name = strdup(fname);
+
+ get_file_type(f);
+
+ td->files_index++;
+ if (f->filetype == FIO_TYPE_FILE)
+ td->nr_normal_files++;
+}
+
+void get_file(struct fio_file *f)
+{
+ f->references++;
+}
+
+void put_file(struct thread_data *td, struct fio_file *f)
+{
+ if (!(f->flags & FIO_FILE_OPEN))
+ return;
+
+ assert(f->references);
+ if (--f->references)
+ return;
+
+ if (should_fsync(td) && td->fsync_on_close)
+ fsync(f->fd);
+
+ if (td->io_ops->close_file)
+ td->io_ops->close_file(td, f);
+ td->nr_open_files--;
+ f->flags &= ~FIO_FILE_OPEN;
+}
+
+static int recurse_dir(struct thread_data *td, const char *dirname)
+{
+ struct dirent *dir;
+ int ret = 0;
+ DIR *D;
+
+ D = opendir(dirname);
+ if (!D) {
+ td_verror(td, errno, "opendir");
+ return 1;
+ }
+
+ while ((dir = readdir(D)) != NULL) {
+ char full_path[PATH_MAX];
+ struct stat sb;
+
+ if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
+ continue;
+
+ sprintf(full_path, "%s/%s", dirname, dir->d_name);
+
+ if (lstat(full_path, &sb) == -1) {
+ if (errno != ENOENT) {
+ td_verror(td, errno, "stat");
+ return 1;
+ }
+ }
+
+ if (S_ISREG(sb.st_mode)) {
+ add_file(td, full_path);
+ td->nr_files++;
+ continue;
+ }
+
+ if ((ret = recurse_dir(td, full_path)) != 0)
+ break;
+ }
+
+ closedir(D);
+ return ret;
+}
+
+int add_dir_files(struct thread_data *td, const char *path)
+{
+ return recurse_dir(td, path);
+}
projects / fio.git / blobdiff