X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=filesetup.c;h=25ce0c0d88852a162d7afcc1f02952116f7cf842;hp=612e79474dc4b43c0707d6a43dccf3d98a2f9e8f;hb=89978a6b26f8;hpb=4641daa9b2e33bc63197dfec48584eaf05890a01

diff --git a/filesetup.c b/filesetup.c
index 612e7947..25ce0c0d 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -833,12 +833,35 @@ static unsigned long long get_fs_free_counts(struct thread_data *td)
 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 {
 	struct thread_options *o = &td->o;
+	unsigned long long align_bs;  /* align the offset to this block size */
+	unsigned long long offset;  /* align_bs-aligned offset */
 
 	if (o->file_append && f->filetype == FIO_TYPE_FILE)
 		return f->real_file_size;
 
-	return td->o.start_offset +
-		td->subjob_number * td->o.offset_increment;
+	if (o->start_offset_percent > 0) {
+
+		/* if blockalign is provided, find the min across read, write, and trim */
+		if (fio_option_is_set(o, ba)) {
+			align_bs = (unsigned long long) min(o->ba[DDIR_READ], o->ba[DDIR_WRITE]);
+			align_bs = min((unsigned long long) o->ba[DDIR_TRIM], align_bs);
+		} else {  /* else take the minimum block size */
+			align_bs = td_min_bs(td);
+		}
+
+		/* calculate the raw offset */
+		offset = (f->real_file_size * o->start_offset_percent / 100) +
+			(td->subjob_number * o->offset_increment);
+
+		/* block align the offset at the next available boundary at
+		   ceiling(offset / align_bs) * align_bs */
+		offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
+
+	} else {  /* start_offset_percent not set */
+		offset = o->start_offset + o->start_offset +
+			td->subjob_number * o->offset_increment;
+	}
+	return offset;
 }
 
 /*