test(robot): detached volume should not reattach after node eviction

longhorn/longhorn-9781

Signed-off-by: Chin-Ya Huang <chin-ya.huang@suse.com>

e2e/keywords/node.resource

@@ -11,6 +11,11 @@ Add ${disk_type} type disk ${disk_path} for all worker nodes
         add_disk    ${worker_node}    ${disk_type}    ${disk_path}
     END
 
+Set node ${node_id} with
+    [Arguments]    &{config}
+    ${node_name} =    get_node_by_index    ${node_id}
+    set_node   ${node_name}    &{config}
+
 Disable node ${node_id} scheduling
     ${node_name} =    get_node_by_index    ${node_id}
     disable_node_scheduling    ${node_name}

e2e/keywords/volume.resource

@@ -119,6 +119,13 @@ Wait for volume ${volume_id} detached
     ${volume_name} =    generate_name_with_suffix    volume    ${volume_id}
     wait_for_volume_detached    ${volume_name}
 
+Assert volume ${volume_id} remains detached for at least ${period} seconds
+    ${volume_name} =    generate_name_with_suffix    volume    ${volume_id}
+    FOR    ${i}    IN RANGE    ${period}
+        wait_for_volume_detached    ${volume_name}
+        Sleep    1
+    END
+
 Wait for volume ${volume_id} faulted
     ${volume_name} =    generate_name_with_suffix    volume    ${volume_id}
     wait_for_volume_faulted    ${volume_name}

e2e/libs/keywords/node_keywords.py

@@ -34,6 +34,10 @@ def disable_default_disk(self, node_name):
     def enable_default_disk(self, node_name):
         self.node.set_default_disk_scheduling(node_name, allowScheduling=True)
 
+    def set_node(self, node_name, allowScheduling=True, evictionRequested=False):
+        logging(f"Setting node {node_name}; scheduling={allowScheduling}; evictionRequested={evictionRequested}")
+        self.node.set_node(node_name, allowScheduling, evictionRequested)
+
     def disable_node_scheduling(self, node_name):
         self.node.set_node_scheduling(node_name, allowScheduling=False)
 

e2e/libs/node/node.py

@@ -128,6 +128,28 @@ def filter_nodes(nodes, condition):
         elif role == "worker":
             return worker_nodes
 
+    def set_node(self, node_name: str, allowScheduling: bool, evictionRequested: bool) -> object:
+        for _ in range(self.retry_count):
+            try:
+                node = get_longhorn_client().by_id_node(node_name)
+
+                get_longhorn_client().update(
+                    node,
+                    allowScheduling=allowScheduling,
+                    evictionRequested=evictionRequested
+                )
+
+                node = get_longhorn_client().by_id_node(node_name)
+                assert node.allowScheduling == allowScheduling
+                assert node.evictionRequested == evictionRequested
+                return node
+            except Exception as e:
+                logging(f"Updating node {node_name} error: {e}")
+
+            time.sleep(self.retry_interval)
+
+        raise AssertionError(f"Updating node {node_name} failed")
+
     def set_node_scheduling(self, node_name, allowScheduling=True, retry=False):
         node = get_longhorn_client().by_id_node(node_name)
 

e2e/tests/regression/test_volume.robot

@@ -9,6 +9,8 @@ Resource    ../keywords/longhorn.resource
 Resource    ../keywords/persistentvolumeclaim.resource
 Resource    ../keywords/setting.resource
 Resource    ../keywords/workload.resource
+Resource    ../keywords/node.resource
+Resource    ../keywords/volume.resource
 
 Test Setup    Set test environment
 Test Teardown    Cleanup test resources
@@ -42,3 +44,19 @@ Test RWX volume data integrity after CSI plugin pod restart
         ...    longhorn-csi-plugin
 
     Then Check deployment 0 data in file data.txt is intact
+
+Test detached volume should not reattach after node eviction
+    [Tags]    volume    node-eviction
+    [Documentation]    Test detached volume should not reattach after node eviction.
+    ...
+    ...                Issue: https://github.com/longhorn/longhorn/issues/9781
+
+    Given Create volume 0 with    dataEngine=${DATA_ENGINE}
+    And Attach volume 0
+    And Wait for volume 0 healthy
+
+    When Detach volume 0
+    And Set node 1 with    allowScheduling=false    evictionRequested=true
+
+    Then Wait for volume 0 detached
+    And Assert volume 0 remains detached for at least 60 seconds