Improve ControllerUnpublishVolume

CHANGELOG.md

@@ -1,4 +1,6 @@
 ## unreleased
+* Take into account `ControllerUnpublishVolumeRequest.NodeId` in `ControllerUnpublishVolume` to prevent undesired detach operations during overlapping CSI calls.
+* Update base image to newer alpine minor version.
 
 ## v3.5.4 - 2024.01.05
 * Update base image to newer alpine minor version.

cmd/cloudscale-csi-plugin/Dockerfile

@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM alpine:3.17.6
+FROM alpine:3.17.7
 
 # e2fsprogs-extra is required for resize2fs used for the resize operation
 # blkid: block device identification tool from util-linux

deploy/README.md

@@ -35,6 +35,10 @@ You can **either** install the driver from your working directory
     # Install a specific Chart version or latest if --version is omitted
     helm install -n kube-system -g csi-cloudscale/csi-cloudscale [ --version v1.0.0 ]
 
+You can verify that the csi-driver has been installed by running the following command and checking if the csi-cloudscale pods are running:
+
+    kubectl get pods -n kube-system
+
 Then execute the test suite:
 
     make test-integration

driver/controller.go

@@ -296,7 +296,7 @@ func (d *Driver) ControllerUnpublishVolume(ctx context.Context, req *csi.Control
 	ll.Info("controller unpublish volume called")
 
 	// check if volume exist before trying to detach it
-	_, err := d.cloudscaleClient.Volumes.Get(ctx, req.VolumeId)
+	volume, err := d.cloudscaleClient.Volumes.Get(ctx, req.VolumeId)
 	if err != nil {
 		errorResponse, ok := err.(*cloudscale.ErrorResponse)
 		if ok {
@@ -308,6 +308,27 @@ func (d *Driver) ControllerUnpublishVolume(ctx context.Context, req *csi.Control
 		return nil, err
 	}
 
+	isAttachedToNode := false
+	for _, serverUUID := range *volume.ServerUUIDs {
+		if serverUUID == req.NodeId {
+			isAttachedToNode = true
+		}
+	}
+
+	ll = ll.WithFields(logrus.Fields{
+		"volume_api_uuid":     volume.UUID,
+		"volume_api_name":     volume.Name,
+		"volume_api_server":   volume.ServerUUIDs,
+		"is_attached_to_node": isAttachedToNode,
+	})
+
+	if req.NodeId != "" && !isAttachedToNode {
+		ll.Warn("Volume is not attached to node given in request.")
+		return &csi.ControllerUnpublishVolumeResponse{}, nil
+	}
+
+	ll.Info("Volume is attached to node given in request or NodeID in request is not set.")
+
 	detachRequest := &cloudscale.VolumeRequest{
 		ServerUUIDs: &[]string{},
 	}

helpers/bootstrap-cluster

@@ -6,7 +6,7 @@ set -euo pipefail
 
 # Default values
 RANDOM_NUMBER=$((RANDOM % 8193))
-K8TEST_SHA="da91af6"
+K8TEST_SHA="1190654"
 ZONE="lpg1"
 CLUSTER_PREFIX="csi-test-$RANDOM_NUMBER"
 KUBERNETES="latest"