4 files changed, 11 insertions, 5 deletions
diff --git a/engines/net.c b/engines/net.c
index 52e3b049..0cda953c 100644
--- a/engines/net.c
+++ b/engines/net.c
@@ -474,7 +474,7 @@ static struct ioengine_ops ioengine_splice = {
 	.cleanup	= fio_netio_cleanup,
 	.open_file	= fio_netio_open_file,
 	.close_file	= generic_close_file,
-	.flags		= FIO_SYNCIO | FIO_DISKLESSIO,
+	.flags		= FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR,
 };
 
 static void fio_init fio_netio_register(void)
diff --git a/fio.c b/fio.c
index 792d4422..b8cba547 100644
--- a/fio.c
+++ b/fio.c
@@ -446,6 +446,13 @@ static void do_io(struct thread_data *td)
 			break;
 		}
 
+		/*
+		 * Add verification end_io handler, if asked to verify
+		 * a previously written file.
+		 */
+		if (td->o.verify != VERIFY_NONE)
+			io_u->end_io = verify_io_u;
+
 		ret = td_io_queue(td, io_u);
 		switch (ret) {
 		case FIO_Q_COMPLETED:
@@ -894,7 +901,8 @@ static void *thread_main(void *data)
 		if (td->error || td->terminate)
 			break;
 
-		if (td->o.verify == VERIFY_NONE)
+		if (td->o.verify == VERIFY_NONE ||
+		    (td->io_ops->flags & FIO_UNIDIR))
 			continue;
 
 		if (clear_io_state(td))
diff --git a/fio.h b/fio.h
index ace4b164..8319a7a1 100644
--- a/fio.h
+++ b/fio.h
@@ -243,6 +243,7 @@ enum fio_ioengine_flags {
 	FIO_DISKLESSIO	= 1 << 2,	/* no disk involved */
 	FIO_NOEXTEND	= 1 << 3,	/* engine can't extend file */
 	FIO_NODISKUTIL  = 1 << 4,       /* diskutil can't handle filename */
+	FIO_UNIDIR	= 1 << 5,	/* engine is uni-directional */
 };
 
 enum fio_file_flags {
diff --git a/init.c b/init.c
index 8be2a10a..2514d90c 100644
--- a/init.c
+++ b/init.c
@@ -222,9 +222,6 @@ static int fixup_options(struct thread_data *td)
 	if (!o->file_size_high)
 		o->file_size_high = o->file_size_low;
 
-	if (td_read(td) && !td_rw(td))
-		o->verify = 0;
-
 	if (o->norandommap && o->verify != VERIFY_NONE) {
 		log_err("fio: norandommap given, verify disabled\n");
 		o->verify = VERIFY_NONE;