#include "smalloc.h"
#include "filehash.h"
#include "os/os.h"
+#include "hash.h"
+#include "lib/axmap.h"
+
+#ifdef CONFIG_LINUX_FALLOCATE
+#include <linux/falloc.h>
+#endif
static int root_warn;
return 1;
}
-#ifdef FIO_HAVE_FALLOCATE
- if (td->o.fallocate && !td->o.fill_device) {
- dprint(FD_FILE, "fallocate file %s size %llu\n", f->file_name,
- f->real_file_size);
+#ifdef CONFIG_POSIX_FALLOCATE
+ if (!td->o.fill_device) {
+ switch (td->o.fallocate_mode) {
+ case FIO_FALLOCATE_NONE:
+ break;
+ case FIO_FALLOCATE_POSIX:
+ dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
+ f->file_name, f->real_file_size);
+
+ r = posix_fallocate(f->fd, 0, f->real_file_size);
+ if (r > 0) {
+ log_err("fio: posix_fallocate fails: %s\n",
+ strerror(r));
+ }
+ break;
+#ifdef CONFIG_LINUX_FALLOCATE
+ case FIO_FALLOCATE_KEEP_SIZE:
+ dprint(FD_FILE,
+ "fallocate(FALLOC_FL_KEEP_SIZE) "
+ "file %s size %llu\n",
+ f->file_name, f->real_file_size);
+
+ r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
+ f->real_file_size);
+ if (r != 0)
+ td_verror(td, errno, "fallocate");
- r = posix_fallocate(f->fd, 0, f->real_file_size);
- if (r > 0) {
- log_err("fio: posix_fallocate fails: %s\n",
- strerror(r));
+ break;
+#endif /* CONFIG_LINUX_FALLOCATE */
+ default:
+ log_err("fio: unknown fallocate mode: %d\n",
+ td->o.fallocate_mode);
+ assert(0);
}
}
-#endif
+#endif /* CONFIG_POSIX_FALLOCATE */
if (!new_layout)
goto done;
static unsigned long long get_rand_file_size(struct thread_data *td)
{
unsigned long long ret, sized;
- long r;
+ unsigned long r;
+
+ if (td->o.use_os_rand) {
+ r = os_random_long(&td->file_size_state);
+ sized = td->o.file_size_high - td->o.file_size_low;
+ ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
+ } else {
+ r = __rand(&td->__file_size_state);
+ sized = td->o.file_size_high - td->o.file_size_low;
+ ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
+ }
- r = os_random_long(&td->file_size_state);
- sized = td->o.file_size_high - td->o.file_size_low;
- ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
ret += td->o.file_size_low;
ret -= (ret % td->o.rw_min_bs);
return ret;
r = blockdev_size(f, &bytes);
if (r) {
td_verror(td, r, "blockdev_size");
- printf("fd is %d\n", f->fd);
goto err;
}
ret = errno;
f->fd = -1;
+
+ if (f->shadow_fd != -1) {
+ close(f->shadow_fd);
+ f->shadow_fd = -1;
+ }
+
return ret;
}
-static int file_lookup_open(struct fio_file *f, int flags)
+int file_lookup_open(struct fio_file *f, int flags)
{
struct fio_file *__f;
int from_hash;
return from_hash;
}
+static int file_close_shadow_fds(struct thread_data *td)
+{
+ struct fio_file *f;
+ int num_closed = 0;
+ unsigned int i;
+
+ for_each_file(td, f, i) {
+ if (f->shadow_fd == -1)
+ continue;
+
+ close(f->shadow_fd);
+ f->shadow_fd = -1;
+ num_closed++;
+ }
+
+ return num_closed;
+}
+
int generic_open_file(struct thread_data *td, struct fio_file *f)
{
int is_std = 0;
dprint(FD_FILE, "fd open %s\n", f->file_name);
+ if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
+ log_err("fio: trim only applies to block device\n");
+ return 1;
+ }
+
if (!strcmp(f->file_name, "-")) {
if (td_rw(td)) {
log_err("fio: can't read/write to stdin/out\n");
f_out = stderr;
}
+ if (td_trim(td))
+ goto skip_flags;
if (td->o.odirect)
flags |= OS_O_DIRECT;
if (td->o.sync_io)
flags |= O_SYNC;
- if (f->filetype != FIO_TYPE_FILE)
- flags |= FIO_O_NOATIME;
if (td->o.create_on_open)
flags |= O_CREAT;
+skip_flags:
+ if (f->filetype != FIO_TYPE_FILE)
+ flags |= FIO_O_NOATIME;
open_again:
if (td_write(td)) {
f->fd = dup(STDOUT_FILENO);
else
from_hash = file_lookup_open(f, flags);
- } else {
+ } else if (td_read(td)) {
if (f->filetype == FIO_TYPE_CHAR && !read_only)
flags |= O_RDWR;
else
f->fd = dup(STDIN_FILENO);
else
from_hash = file_lookup_open(f, flags);
+ } else { //td trim
+ flags |= O_RDWR;
+ from_hash = file_lookup_open(f, flags);
}
if (f->fd == -1) {
flags &= ~FIO_O_NOATIME;
goto open_again;
}
+ if (__e == EMFILE && file_close_shadow_fds(td))
+ goto open_again;
- snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
+ snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
+
+ if (__e == EINVAL && (flags & OS_O_DIRECT)) {
+ log_err("fio: looks like your file system does not " \
+ "support direct=1/buffered=0\n");
+ }
td_verror(td, __e, buf);
}
if (!from_hash && f->fd != -1) {
if (add_file_hash(f)) {
- int ret;
+ int fio_unused ret;
/*
- * OK to ignore, we haven't done anything with it
+ * Stash away descriptor for later close. This is to
+ * work-around a "feature" on Linux, where a close of
+ * an fd that has been opened for write will trigger
+ * udev to call blkid to check partitions, fs id, etc.
+ * That polutes the device cache, which can slow down
+ * unbuffered accesses.
*/
- ret = generic_close_file(td, f);
+ if (f->shadow_fd == -1)
+ f->shadow_fd = f->fd;
+ else {
+ /*
+ * OK to ignore, we haven't done anything
+ * with it
+ */
+ ret = generic_close_file(td, f);
+ }
goto open_again;
}
}
return ret;
}
+uint64_t get_start_offset(struct thread_data *td)
+{
+ return td->o.start_offset +
+ (td->thread_number - 1) * td->o.offset_increment;
+}
+
/*
* Open the files and setup files sizes, creating files if necessary.
*/
dprint(FD_FILE, "setup files\n");
if (td->o.read_iolog_file)
- return 0;
+ goto done;
/*
* if ioengine defines a setup() method, it's responsible for
extend_size = total_size = 0;
need_extend = 0;
for_each_file(td, f, i) {
- f->file_offset = td->o.start_offset;
+ f->file_offset = get_start_offset(td);
if (!td->o.file_size_low) {
/*
if (f->io_size == -1ULL)
total_size = -1ULL;
- else
+ else {
+ if (td->o.size_percent)
+ f->io_size = (f->io_size * td->o.size_percent) / 100;
total_size += f->io_size;
+ }
if (f->filetype == FIO_TYPE_FILE &&
(f->io_size + f->file_offset) > f->real_file_size &&
*/
if (need_extend) {
temp_stall_ts = 1;
- if (!terse_output)
+ if (output_format == FIO_OUTPUT_NORMAL)
log_info("%s: Laying out IO file(s) (%u file(s) /"
" %lluMB)\n", td->o.name, need_extend,
extend_size >> 20);
*/
if (!td->o.read_iolog_file)
td->total_io_size = td->o.size * td->o.loops;
+
+done:
+ if (td->o.create_only)
+ td->done = 1;
+
return 0;
err_offset:
log_err("%s: you need to specify valid offset=\n", td->o.name);
return 1;
}
+static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
+{
+ unsigned int range_size, seed;
+ unsigned long nranges;
+ uint64_t file_size;
+
+ range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
+ file_size = min(f->real_file_size, f->io_size);
+
+ nranges = (file_size + range_size - 1) / range_size;
+
+ seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
+ if (!td->o.rand_repeatable)
+ seed = td->rand_seeds[4];
+
+ if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
+ zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
+ else
+ pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
+
+ return 1;
+}
+
+static int init_rand_distribution(struct thread_data *td)
+{
+ struct fio_file *f;
+ unsigned int i;
+ int state;
+
+ if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
+ return 0;
+
+ state = td->runstate;
+ td_set_runstate(td, TD_SETTING_UP);
+ for_each_file(td, f, i)
+ __init_rand_distribution(td, f);
+ td_set_runstate(td, state);
+
+ return 1;
+}
+
int init_random_map(struct thread_data *td)
{
- unsigned long long blocks, num_maps;
+ unsigned long long blocks;
struct fio_file *f;
unsigned int i;
- if (td->o.norandommap || !td_random(td))
+ if (init_rand_distribution(td))
+ return 0;
+ if (!td_random(td))
return 0;
for_each_file(td, f, i) {
- blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
+ uint64_t file_size = min(f->real_file_size, f->io_size);
+
+ blocks = (file_size + td->o.rw_min_bs - 1) /
(unsigned long long) td->o.rw_min_bs;
- num_maps = (blocks + BLOCKS_PER_MAP - 1) /
- (unsigned long long) BLOCKS_PER_MAP;
- f->file_map = smalloc(num_maps * sizeof(int));
- if (f->file_map) {
- f->num_maps = num_maps;
+ if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
+ unsigned long seed;
+
+ seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
+
+ if (!lfsr_init(&f->lfsr, blocks, seed))
+ continue;
+ } else if (!td->o.norandommap) {
+ f->io_axmap = axmap_new(blocks);
+ if (f->io_axmap)
+ continue;
+ } else if (td->o.norandommap)
continue;
- }
+
if (!td->o.softrandommap) {
log_err("fio: failed allocating random map. If running"
" a large number of jobs, try the 'norandommap'"
log_info("fio: file %s failed allocating random map. Running "
"job without.\n", f->file_name);
- f->num_maps = 0;
}
return 0;
sfree(f->file_name);
f->file_name = NULL;
- sfree(f->file_map);
- f->file_map = NULL;
+ axmap_free(f->io_axmap);
+ f->io_axmap = NULL;
sfree(f);
}
else
f->filetype = FIO_TYPE_FILE;
+ /* \\.\ is the device namespace in Windows, where every file is
+ * a block device */
+ if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
+ f->filetype = FIO_TYPE_BD;
+
if (!stat(f->file_name, &sb)) {
- /* \\.\ is the device namespace in Windows, where every file is
- * a block device */
- if (S_ISBLK(sb.st_mode) || strncmp(f->file_name, "\\\\.\\", 4) == 0)
+ if (S_ISBLK(sb.st_mode))
f->filetype = FIO_TYPE_BD;
else if (S_ISCHR(sb.st_mode))
f->filetype = FIO_TYPE_CHAR;
}
f->fd = -1;
- fio_file_reset(f);
+ f->shadow_fd = -1;
+ fio_file_reset(td, f);
if (td->files_size <= td->files_index) {
- int new_size = td->o.nr_files + 1;
+ unsigned int new_size = td->o.nr_files + 1;
dprint(FD_FILE, "resize file array to %d files\n", new_size);
td->files = realloc(td->files, new_size * sizeof(f));
+ if (td->files == NULL) {
+ log_err("fio: realloc OOM\n");
+ assert(0);
+ }
td->files_size = new_size;
}
td->files[cur_files] = f;
+ f->fileno = cur_files;
/*
* init function, io engine may not be loaded yet
f->lock = fio_mutex_rw_init();
break;
case FILE_LOCK_EXCLUSIVE:
- f->lock = fio_mutex_init(1);
+ f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
break;
default:
log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
if (!D) {
char buf[FIO_VERROR_SIZE];
- snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
+ snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
td_verror(td, errno, buf);
return 1;
}
if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
continue;
- sprintf(full_path, "%s/%s", dirname, dir->d_name);
+ sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
if (lstat(full_path, &sb) == -1) {
if (errno != ENOENT) {
assert(0);
}
__f->fd = -1;
- fio_file_reset(__f);
+ fio_file_reset(td, __f);
if (f->file_name) {
__f->file_name = smalloc_strdup(f->file_name);
td->files_index = 0;
td->nr_normal_files = 0;
}
+
+void fio_file_reset(struct thread_data *td, struct fio_file *f)
+{
+ f->last_pos = f->file_offset;
+ f->last_start = -1ULL;
+ if (f->io_axmap)
+ axmap_reset(f->io_axmap);
+ if (td->o.random_generator == FIO_RAND_GEN_LFSR)
+ lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
+}
projects / fio.git / blobdiff