For rdma ioengine's one side operation, RDMA_WRITE or RDMA_READ,
server side gets a message from client side that the task is finished.
In previous version, the server simply exit() in td_io_commit() which
causes segmentation fault in thread mode or process hanging in process
mode. This patch achieves graceful tear down by setting up `td->done`
as UDP engine did.
---
diff --git a/engines/rdma.c b/engines/rdma.c
index 54fd194..79d72d2 100644
--- a/engines/rdma.c
+++ b/engines/rdma.c
@@ -674,7 +674,8 @@ static int fio_rdmaio_recv(struct thread_data *td, struct io
_u **io_us,
rdma_poll_wait(td, IBV_WC_RECV);
dprint(FD_IO, "fio: recv FINISH message\n");
- exit(0);
+ td->done = 1;
+ return 0;
}
return i;
diff --git a/ioengines.c b/ioengines.c
index 4c609f2..e1605c4 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -208,6 +208,16 @@ int td_io_getevents(struct thread_data *td, unsigned int mi
n, unsigned int max,
{
int r = 0;
+ /*
+ * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ,
+ * server side gets a message from the client
+ * side that the task is finished, and
+ * td->done is set to 1 after td_io_commit(). In this case,
+ * there is no need to reap complete event in server side.
+ */
+ if (td->done)
+ return 0;
+
if (min > 0 && td->io_ops->commit) {
r = td->io_ops->commit(td);
if (r < 0)
--
1.7.1
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