[LU-15885] o2iblnd: RDMA_CM_EVENT_UNREACHABLE may be received after conn clean-up

Related — Fri, 14 Oct 2022 22:13:23 +0000

There's a scenario when IB port going down triggers the following assertion:

  case RDMA_CM_EVENT_UNREACHABLE:
                conn = cmid->context;
                LASSERT(conn->ibc_state == IBLND_CONN_ACTIVE_CONNECT ||
                        conn->ibc_state == IBLND_CONN_PASSIVE_WAIT);

Because connection is already disconnected due to an earlier "RDMA Timeout".

Since it appears to be possible to get RDMA_CM_EVENT_UNREACHABLE after having decided to close the connection, this code should be changed.

Whamcloud Community JIRA

[LU-15885] o2iblnd: RDMA_CM_EVENT_UNREACHABLE may be received after conn clean-up