+#define FMINORBITS 20
+#define FMINORMASK ((1U << FMINORBITS) - 1)
+#define FMAJOR(dev) ((unsigned int) ((dev) >> FMINORBITS))
+#define FMINOR(dev) ((unsigned int) ((dev) & FMINORMASK))
+
+static void trace_add_open_close_event(struct thread_data *td, int fileno, enum file_log_act action)
+{
+ struct io_piece *ipo;
+
+ ipo = calloc(1, sizeof(*ipo));
+ init_ipo(ipo);
+
+ ipo->ddir = DDIR_INVAL;
+ ipo->fileno = fileno;
+ ipo->file_action = action;
+ flist_add_tail(&ipo->list, &td->io_log_list);
+}
+
+static int get_dev_blocksize(const char *dev, unsigned int *bs)
+{
+ int fd;
+
+ fd = open(dev, O_RDONLY);
+ if (fd < 0)
+ return 1;
+
+ if (ioctl(fd, BLKSSZGET, bs) < 0) {
+ close(fd);
+ return 1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+static int trace_add_file(struct thread_data *td, __u32 device,
+ unsigned int *bs)
+{
+ static unsigned int last_maj, last_min, last_fileno, last_bs;
+ unsigned int maj = FMAJOR(device);
+ unsigned int min = FMINOR(device);
+ struct fio_file *f;
+ unsigned int i;
+ char dev[256];
+
+ if (last_maj == maj && last_min == min) {
+ *bs = last_bs;
+ return last_fileno;
+ }
+
+ last_maj = maj;
+ last_min = min;
+
+ /*
+ * check for this file in our list
+ */
+ for_each_file(td, f, i) {
+ if (f->major == maj && f->minor == min) {
+ last_fileno = f->fileno;
+ last_bs = f->bs;
+ goto out;
+ }
+ }
+
+ strcpy(dev, "/dev");
+ if (blktrace_lookup_device(td->o.replay_redirect, dev, maj, min)) {
+ unsigned int this_bs;
+ int fileno;
+
+ if (td->o.replay_redirect)
+ dprint(FD_BLKTRACE, "device lookup: %d/%d\n overridden"
+ " with: %s\n", maj, min,
+ td->o.replay_redirect);
+ else
+ dprint(FD_BLKTRACE, "device lookup: %d/%d\n", maj, min);
+
+ dprint(FD_BLKTRACE, "add devices %s\n", dev);
+ fileno = add_file_exclusive(td, dev);
+
+ if (get_dev_blocksize(dev, &this_bs))
+ this_bs = 512;
+
+ td->o.open_files++;
+ td->files[fileno]->major = maj;
+ td->files[fileno]->minor = min;
+ td->files[fileno]->bs = this_bs;
+ trace_add_open_close_event(td, fileno, FIO_LOG_OPEN_FILE);
+
+ last_fileno = fileno;
+ last_bs = this_bs;
+ }
+
+out:
+ *bs = last_bs;
+ return last_fileno;
+}
+
+static void t_bytes_align(struct thread_options *o, struct blk_io_trace *t)
+{
+ if (!o->replay_align)
+ return;
+
+ t->bytes = (t->bytes + o->replay_align - 1) & ~(o->replay_align - 1);
+}
+
+static void ipo_bytes_align(struct thread_options *o, struct io_piece *ipo)
+{
+ if (!o->replay_align)
+ return;
+
+ ipo->offset &= ~(o->replay_align - 1);
+}
+
+