X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=filesetup.c;h=9fd04daae2f6ca2b58a61e68b0d4f816801c61a7;hp=9862c7dba06ae26f8f0a99ecf79cd75a61b8f159;hb=b0f65863844b4de92d10fefaabde80ea5bc3e5cc;hpb=8bb7679e73d3086a01b9d21a650b0d7a859412b6

diff --git a/filesetup.c b/filesetup.c
index 9862c7db..9fd04daa 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -119,6 +119,55 @@ err:
 	return 1;
 }
 
+static int pre_read_file(struct thread_data *td, struct fio_file *f)
+{
+	int r, did_open = 0, old_runstate;
+	unsigned long long left;
+	unsigned int bs;
+	char *b;
+
+	if (!(f->flags & FIO_FILE_OPEN)) {
+		if (td->io_ops->open_file(td, f)) {
+			log_err("fio: cannot pre-read, failed to open file\n");
+			return 1;
+		}
+		did_open = 1;
+	}
+
+	old_runstate = td->runstate;
+	td_set_runstate(td, TD_PRE_READING);
+
+	bs = td->o.max_bs[DDIR_READ];
+	b = malloc(bs);
+	memset(b, 0, bs);
+
+	lseek(f->fd, f->file_offset, SEEK_SET);
+	left = f->io_size;
+
+	while (left && !td->terminate) {
+		if (bs > left)
+			bs = left;
+
+		r = read(f->fd, b, bs);
+
+		if (r == (int) bs) {
+			left -= bs;
+			continue;
+		} else {
+			printf("r=%d\n", r);
+			td_verror(td, EIO, "pre_read");
+			break;
+		}
+	}
+
+	td_set_runstate(td, old_runstate);
+
+	if (did_open)
+		td->io_ops->close_file(td, f);
+	free(b);
+	return 0;
+}
+
 static unsigned long long get_rand_file_size(struct thread_data *td)
 {
 	unsigned long long ret, sized;
@@ -136,7 +185,7 @@ static int file_size(struct thread_data *td, struct fio_file *f)
 {
 	struct stat st;
 
-	if (fstat(f->fd, &st) == -1) {
+	if (stat(f->file_name, &st) == -1) {
 		td_verror(td, errno, "fstat");
 		return 1;
 	}
@@ -150,19 +199,28 @@ static int bdev_size(struct thread_data *td, struct fio_file *f)
 	unsigned long long bytes;
 	int r;
 
+	if (td->io_ops->open_file(td, f)) {
+		log_err("fio: failed opening blockdev %s for size check\n",
+			f->file_name);
+		return 1;
+	}
+
 	r = blockdev_size(f->fd, &bytes);
 	if (r) {
 		td_verror(td, r, "blockdev_size");
-		return 1;
+		goto err;
 	}
 
 	if (!bytes) {
 		log_err("%s: zero sized block device?\n", f->file_name);
-		return 1;
+		goto err;
 	}
 
 	f->real_file_size = bytes;
 	return 0;
+err:
+	td->io_ops->close_file(td, f);
+	return 1;
 }
 
 static int get_file_size(struct thread_data *td, struct fio_file *f)
@@ -355,9 +413,6 @@ open_again:
 		td_verror(td, __e, buf);
 	}
 
-	if (get_file_size(td, f))
-		goto err;
-
 	if (!from_hash && f->fd != -1) {
 		if (add_file_hash(f)) {
 			int ret;
@@ -371,43 +426,11 @@ open_again:
 	}
 
 	return 0;
-err:
-	close(f->fd);
-	return 1;
 }
 
-int open_files(struct thread_data *td)
+int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 {
-	struct fio_file *f;
-	unsigned int i;
-	int err = 0;
-
-	dprint(FD_FILE, "open files\n");
-
-	for_each_file(td, f, i) {
-		err = td_io_open_file(td, f);
-		if (err) {
-			if (td->error == EMFILE) {
-				log_err("fio: limited open files to: %d\n",
-							td->nr_open_files);
-				td->o.open_files = td->nr_open_files;
-				err = 0;
-				clear_error(td);
-			}
-			break;
-		}
-
-		if (td->o.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;
+	return get_file_size(td, f);
 }
 
 /*
@@ -423,15 +446,12 @@ static int get_file_sizes(struct thread_data *td)
 		dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 								f->file_name);
 
-		if (td->io_ops->open_file(td, f)) {
+		if (td_io_get_file_size(td, f)) {
 			if (td->error != ENOENT) {
 				log_err("%s\n", td->verror);
 				err = 1;
 			}
 			clear_error(td);
-		} else {
-			if (td->io_ops->close_file)
-				td->io_ops->close_file(td, f);
 		}
 
 		if (f->real_file_size == -1ULL && td->o.size)
@@ -601,6 +621,20 @@ err_offset:
 	return 1;
 }
 
+int pre_read_files(struct thread_data *td)
+{
+	struct fio_file *f;
+	unsigned int i;
+
+	dprint(FD_FILE, "pre_read files\n");
+
+	for_each_file(td, f, i) {
+		pre_read_file(td, f);
+	}
+
+	return 1;
+}
+
 int init_random_map(struct thread_data *td)
 {
 	unsigned long long blocks, num_maps;
@@ -715,7 +749,7 @@ int add_file(struct thread_data *td, const char *fname)
 	f->fd = -1;
 
 	if (td->files_size <= td->files_index) {
-		int new_size = td->o.nr_files;
+		int new_size = td->o.nr_files + 1;
 
 		dprint(FD_FILE, "resize file array to %d files\n", new_size);