Update failover option for DGX

Former-commit-id: da079f08

roles/mellanox_drivers/tasks/main.yml

@@ -114,7 +114,6 @@
   - mlnx-ofa_kernel-modules
   when: install_now
 
-
 - name: install drivers
   shell: ./mlnxofedinstall -q --add-kernel-support --force --skip-repo
   args:
@@ -129,6 +128,18 @@
   become_user: root
   register: service_file
 
+- name: Set failover mode on DGX baremetal nodes
+  lineinfile:
+    path: /etc/modprobe.d/ko2iblnd.conf
+    state: present
+    line: "options ko2iblnd dev_failover=1"
+    insertafter: EOF
+  when:
+   - '"DGX" in ansible_product_name'
+   - '"RedHat" in ansible_distribution'
+   become: true
+   become_user: root 
+
 - name: Reload systemd
   shell: systemctl daemon-reload
   become: true