X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=filesetup.c;h=f3fccdbed483f1849698fb917fd08db95784e3a5;hp=adfe940d1a0b89e1a09d7353dcea2ab28ab73b8c;hb=0ad920e7f85db1fdc26649be6bc7e584e8c7fdc9;hpb=53cdc6864f7471b28cc9b40a5314ab43e5b1cb5e

diff --git a/filesetup.c b/filesetup.c
index adfe940d..f3fccdbe 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -8,6 +8,31 @@
 #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 (f->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;
@@ -17,21 +42,26 @@ 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) {
-		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;
 
@@ -42,9 +72,9 @@ static int create_file(struct thread_data *td, struct fio_file *f)
 			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;
 		}
@@ -68,36 +98,65 @@ err:
 static int create_files(struct thread_data *td)
 {
 	struct fio_file *f;
-	int i, err;
+	int err, need_create, can_extend;
+	unsigned int i;
+
+	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;
-
+	can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
+	if (can_extend)
 		return 0;
+
+	need_create = 0;
+	for_each_file(td, f, i) {
+		int file_there;
+
+		if (f->filetype != FIO_TYPE_FILE)
+			continue;
+
+		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->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;
@@ -110,7 +169,7 @@ static int file_size(struct thread_data *td, struct fio_file *f)
 
 	if (td->overwrite) {
 		if (fstat(f->fd, &st) == -1) {
-			td_verror(td, errno);
+			td_verror(td, errno, "fstat");
 			return 1;
 		}
 
@@ -118,9 +177,9 @@ 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;
-	}
+	} else
+		f->real_file_size = f->file_size;
 
-	f->file_size -= f->file_offset;
 	return 0;
 }
 
@@ -131,7 +190,7 @@ static int bdev_size(struct thread_data *td, struct fio_file *f)
 
 	r = blockdev_size(f->fd, &bytes);
 	if (r) {
-		td_verror(td, r);
+		td_verror(td, r, "blockdev_size");
 		return 1;
 	}
 
@@ -151,9 +210,9 @@ static int get_file_size(struct thread_data *td, struct fio_file *f)
 {
 	int ret = 0;
 
-	if (td->filetype == FIO_TYPE_FILE)
+	if (f->filetype == FIO_TYPE_FILE)
 		ret = file_size(td, f);
-	else if (td->filetype == FIO_TYPE_BD)
+	else if (f->filetype == FIO_TYPE_BD)
 		ret = bdev_size(td, f);
 	else
 		f->real_file_size = -1;
@@ -166,145 +225,60 @@ static int get_file_size(struct thread_data *td, struct fio_file *f)
 		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)
 {
-	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)) {
-		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;
@@ -313,20 +287,67 @@ static int setup_file(struct thread_data *td, struct fio_file *f)
 	}
 
 	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 (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
@@ -338,15 +359,23 @@ int setup_files(struct thread_data *td)
 	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;
 	}
 
@@ -355,26 +384,84 @@ int setup_files(struct thread_data *td)
 
 	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)
 {
-	int i;
-
-	for (i = 0; i < td->nr_files; i++) {
-		struct fio_file *f = &td->files[i];
+	struct fio_file *f;
+	unsigned int 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->flags & FIO_FILE_UNLINK) &&
+		    f->filetype == FIO_TYPE_FILE) {
+			unlink(f->file_name);
+			f->file_name = NULL;
 		}
+
+		td_io_close_file(td, f);
+
+		if (f->file_map)
+			free(f->file_map);
 	}
+
+	td->filename = NULL;
+	free(td->files);
+	td->files = NULL;
+	td->nr_files = 0;
+}
+
+static void get_file_type(struct thread_data *td, struct fio_file *f)
+{
+	struct stat sb;
+
+	f->filetype = FIO_TYPE_FILE;
+
+	if (!lstat(td->filename, &sb)) {
+		if (S_ISBLK(sb.st_mode))
+			f->filetype = FIO_TYPE_BD;
+		else if (S_ISCHR(sb.st_mode))
+			f->filetype = FIO_TYPE_CHAR;
+	}
+}
+
+void add_file(struct thread_data *td, const char *fname)
+{
+	int cur_files = td->open_files;
+	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 = fname;
+
+	get_file_type(td, f);
+
+	td->open_files++;
+	td->nr_uniq_files = td->open_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 (td->io_ops->close_file)
+		td->io_ops->close_file(td, f);
+	td->nr_open_files--;
+	f->flags &= ~FIO_FILE_OPEN;
 }