X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=filesetup.c;h=3e2ccf9b9b4061b0e943c4487f8e6a93ddd625ff;hp=76b3f9359bad79b44b21d17a8edb74f869b15b7a;hb=d33c7846cc5f175177e194a5489282780e2a04c4;hpb=6cc78de0059146ed2344438b16ffff28fed42915

diff --git a/filesetup.c b/filesetup.c
index 76b3f935..3e2ccf9b 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -143,7 +143,7 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
 	if (unlink_file || new_layout) {
 		int ret;
 
-		dprint(FD_FILE, "layout unlink %s\n", f->file_name);
+		dprint(FD_FILE, "layout %d unlink %d %s\n", new_layout, unlink_file, f->file_name);
 
 		ret = td_io_unlink_file(td, f);
 		if (ret != 0 && ret != ENOENT) {
@@ -198,6 +198,9 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
 		}
 	}
 
+
+	dprint(FD_FILE, "fill file %s, size %llu\n", f->file_name, (unsigned long long) f->real_file_size);
+
 	left = f->real_file_size;
 	bs = td->o.max_bs[DDIR_WRITE];
 	if (bs > left)
@@ -226,11 +229,16 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
 			if (r < 0) {
 				int __e = errno;
 
-				if (__e == ENOSPC) {
+				if (__e == ENOSPC || __e == EDQUOT) {
+					const char *__e_name;
 					if (td->o.fill_device)
 						break;
-					log_info("fio: ENOSPC on laying out "
-						 "file, stopping\n");
+					if (__e == ENOSPC)
+						__e_name = "ENOSPC";
+					else
+						__e_name = "EDQUOT";
+					log_info("fio: %s on laying out "
+						 "file, stopping\n", __e_name);
 				}
 				td_verror(td, errno, "write");
 			} else
@@ -338,6 +346,95 @@ error:
 	return ret;
 }
 
+/*
+ * Generic function to prepopulate regular file with data.
+ * Useful if you want to make sure I/O engine has data to read.
+ * Leaves f->fd open on success, caller must close.
+ */
+int generic_prepopulate_file(struct thread_data *td, struct fio_file *f)
+{
+	int flags;
+	unsigned long long left, bs;
+	char *b = NULL;
+
+	/* generic function for regular files only */
+	assert(f->filetype == FIO_TYPE_FILE);
+
+	if (read_only) {
+		log_err("fio: refusing to write a file due to read-only\n");
+		return 0;
+	}
+
+	flags = O_WRONLY;
+	if (td->o.allow_create)
+		flags |= O_CREAT;
+
+#ifdef WIN32
+	flags |= _O_BINARY;
+#endif
+
+	dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
+	f->fd = open(f->file_name, flags, 0644);
+	if (f->fd < 0) {
+		int err = errno;
+
+		if (err == ENOENT && !td->o.allow_create)
+			log_err("fio: file creation disallowed by "
+					"allow_file_create=0\n");
+		else
+			td_verror(td, err, "open");
+		return 1;
+	}
+
+	left = f->real_file_size;
+	bs = td->o.max_bs[DDIR_WRITE];
+	if (bs > left)
+		bs = left;
+
+	b = malloc(bs);
+	if (!b) {
+		td_verror(td, errno, "malloc");
+		goto err;
+	}
+
+	while (left && !td->terminate) {
+		ssize_t r;
+
+		if (bs > left)
+			bs = left;
+
+		fill_io_buffer(td, b, bs, bs);
+
+		r = write(f->fd, b, bs);
+
+		if (r > 0) {
+			left -= r;
+		} else {
+			td_verror(td, errno, "write");
+			goto err;
+		}
+	}
+
+	if (td->terminate) {
+		dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
+		td_io_unlink_file(td, f);
+	} else if (td->o.create_fsync) {
+		if (fsync(f->fd) < 0) {
+			td_verror(td, errno, "fsync");
+			goto err;
+		}
+	}
+
+	free(b);
+	return 0;
+err:
+	close(f->fd);
+	f->fd = -1;
+	if (b)
+		free(b);
+	return 1;
+}
+
 unsigned long long get_rand_file_size(struct thread_data *td)
 {
 	unsigned long long ret, sized;
@@ -930,7 +1027,6 @@ int longest_existing_path(char *path) {
 	while (!done) {
 		buf_pos = strrchr(buf, FIO_OS_PATH_SEPARATOR);
 		if (!buf_pos) {
-			done = true;
 			offset = 0;
 			break;
 		}
@@ -985,6 +1081,44 @@ static bool create_work_dirs(struct thread_data *td, const char *fname)
 	return true;
 }
 
+int setup_shared_file(struct thread_data *td)
+{
+	struct fio_file *f;
+	uint64_t file_size;
+	int err = 0;
+
+	if (td->o.nr_files > 1) {
+		log_err("fio: shared file setup called for multiple files\n");
+		return -1;
+	}
+
+	get_file_sizes(td);
+
+	f = td->files[0];
+
+	if (f == NULL) {
+		log_err("fio: NULL shared file\n");
+		return -1;
+	}
+
+	file_size = thread_number * td->o.size;
+	dprint(FD_FILE, "shared setup %s real_file_size=%llu, desired=%llu\n", 
+			f->file_name, (unsigned long long)f->real_file_size, (unsigned long long)file_size);
+
+	if (f->real_file_size < file_size) {
+		dprint(FD_FILE, "fio: extending shared file\n");
+		f->real_file_size = file_size;
+		err = extend_file(td, f);
+		if (!err)
+			err = __file_invalidate_cache(td, f, 0, f->real_file_size);
+		get_file_sizes(td);
+		dprint(FD_FILE, "shared setup new real_file_size=%llu\n", 
+				(unsigned long long)f->real_file_size);
+	}
+
+	return err;
+}
+
 /*
  * Open the files and setup files sizes, creating files if necessary.
  */
@@ -999,7 +1133,7 @@ int setup_files(struct thread_data *td)
 	const unsigned long long bs = td_min_bs(td);
 	uint64_t fs = 0;
 
-	dprint(FD_FILE, "setup files\n");
+	dprint(FD_FILE, "setup files (thread_number=%d, subjob_number=%d)\n", td->thread_number, td->subjob_number);
 
 	old_state = td_bump_runstate(td, TD_SETTING_UP);
 
@@ -1026,6 +1160,13 @@ int setup_files(struct thread_data *td)
 	if (err)
 		goto err_out;
 
+	if (td->o.zone_mode == ZONE_MODE_ZBD) {
+		err = zbd_init_files(td);
+		if (err)
+			goto err_out;
+	}
+	zbd_recalc_options_with_zone_granularity(td);
+
 	if (o->read_iolog_file)
 		goto done;
 
@@ -1254,6 +1395,43 @@ int setup_files(struct thread_data *td)
 		temp_stall_ts = 0;
 	}
 
+	if (err)
+		goto err_out;
+
+	/*
+	 * Prepopulate files with data. It might be expected to read some
+	 * "real" data instead of zero'ed files (if no writes to file occurred
+	 * prior to a read job). Engine has to provide a way to do that.
+	 */
+	if (td->io_ops->prepopulate_file) {
+		temp_stall_ts = 1;
+
+		for_each_file(td, f, i) {
+			if (output_format & FIO_OUTPUT_NORMAL) {
+				log_info("%s: Prepopulating IO file (%s)\n",
+							o->name, f->file_name);
+			}
+
+			err = td->io_ops->prepopulate_file(td, f);
+			if (err)
+				break;
+
+			err = __file_invalidate_cache(td, f, f->file_offset,
+								f->io_size);
+
+			/*
+			 * Shut up static checker
+			 */
+			if (f->fd != -1)
+				close(f->fd);
+
+			f->fd = -1;
+			if (err)
+				break;
+		}
+		temp_stall_ts = 0;
+	}
+
 	if (err)
 		goto err_out;
 
@@ -1269,16 +1447,17 @@ int setup_files(struct thread_data *td)
 	}
 
 done:
-	if (o->create_only)
-		td->done = 1;
-
-	td_restore_runstate(td, old_state);
-
 	if (td->o.zone_mode == ZONE_MODE_ZBD) {
 		err = zbd_setup_files(td);
 		if (err)
 			goto err_out;
 	}
+
+	if (o->create_only)
+		td->done = 1;
+
+	td_restore_runstate(td, old_state);
+
 	return 0;
 
 err_offset:
@@ -1316,14 +1495,14 @@ static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
 
 	seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
 	if (!td->o.rand_repeatable)
-		seed = td->rand_seeds[4];
+		seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
 
 	if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
-		zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
+		zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, td->o.random_center.u.f, seed);
 	else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
-		pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
+		pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, td->o.random_center.u.f, seed);
 	else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
-		gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
+		gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, td->o.random_center.u.f, seed);
 }
 
 static bool init_rand_distribution(struct thread_data *td)
@@ -1348,7 +1527,7 @@ static bool init_rand_distribution(struct thread_data *td)
 
 /*
  * Check if the number of blocks exceeds the randomness capability of
- * the selected generator. Tausworthe is 32-bit, the others are fullly
+ * the selected generator. Tausworthe is 32-bit, the others are fully
  * 64-bit capable.
  */
 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
@@ -1893,11 +2072,12 @@ void dup_files(struct thread_data *td, struct thread_data *org)
 	if (!org->files)
 		return;
 
-	td->files = malloc(org->files_index * sizeof(f));
+	td->files = calloc(org->files_index, sizeof(f));
 
 	if (td->o.file_lock_mode != FILE_LOCK_NONE)
 		td->file_locks = malloc(org->files_index);
 
+	assert(org->files_index >= org->o.nr_files);
 	for_each_file(org, f, i) {
 		struct fio_file *__f;