stat: add dropped ios to the standard output

[fio.git] / io_u.c

diff --git a/io_u.c b/io_u.c
index 8546899c03e79184fdbe7c1ab58282fa9b5713d7..612057d15762dfa13e7e48bc48e99658f9e8880a 100644 (file)
--- a/io_u.c
+++ b/io_u.c
@@ -271,20 +271,32 @@ static int get_next_rand_block(struct thread_data *td, struct fio_file *f,
 static int get_next_seq_offset(struct thread_data *td, struct fio_file *f,
                               enum fio_ddir ddir, uint64_t *offset)
 {
+       struct thread_options *o = &td->o;
+
        assert(ddir_rw(ddir));
 
-       if (f->last_pos >= f->io_size + get_start_offset(td, f) && td->o.time_based)
+       if (f->last_pos >= f->io_size + get_start_offset(td, f) &&
+           o->time_based)
                f->last_pos = f->last_pos - f->io_size;
 
        if (f->last_pos < f->real_file_size) {
                uint64_t pos;
 
-               if (f->last_pos == f->file_offset && td->o.ddir_seq_add < 0)
+               if (f->last_pos == f->file_offset && o->ddir_seq_add < 0)
                        f->last_pos = f->real_file_size;
 
                pos = f->last_pos - f->file_offset;
-               if (pos)
-                       pos += td->o.ddir_seq_add;
+               if (pos && o->ddir_seq_add) {
+                       pos += o->ddir_seq_add;
+
+                       /*
+                        * If we reach beyond the end of the file
+                        * with holed IO, wrap around to the
+                        * beginning again.
+                        */
+                       if (pos >= f->real_file_size)
+                               pos = f->file_offset;
+               }
 
                *offset = pos;
                return 0;
@@ -748,9 +760,17 @@ static int fill_io_u(struct thread_data *td, struct io_u *io_u)
         * See if it's time to switch to a new zone
         */
        if (td->zone_bytes >= td->o.zone_size && td->o.zone_skip) {
+               struct fio_file *f = io_u->file;
+
                td->zone_bytes = 0;
-               io_u->file->file_offset += td->o.zone_range + td->o.zone_skip;
-               io_u->file->last_pos = io_u->file->file_offset;
+               f->file_offset += td->o.zone_range + td->o.zone_skip;
+
+               /*
+                * Wrap from the beginning, if we exceed the file size
+                */
+               if (f->file_offset >= f->real_file_size)
+                       f->file_offset = f->real_file_size - f->file_offset;
+               f->last_pos = f->file_offset;
                td->io_skip_bytes += td->o.zone_skip;
        }
 
@@ -1281,7 +1301,7 @@ void lat_target_check(struct thread_data *td)
  * If latency target is enabled, we might be ramping up or down and not
  * using the full queue depth available.
  */
-int queue_full(struct thread_data *td)
+int queue_full(const struct thread_data *td)
 {
        const int qempty = io_u_qempty(&td->io_u_freelist);