nvmeof: add rados ns ability

add rados ns ability to nvmeof csi driver.

Signed-off-by: gadi-didi <gadi.didi@ibm.com>

Author: gadididi

internal/nvmeof/controller/controllerserver.go

@@ -122,7 +122,7 @@ func (cs *Server) CreateVolume(
 
 	backend := res.GetVolume()
 	volumeID := backend.GetVolumeId()
-
+	volumeContext := backend.GetVolumeContext()
 	defer func() {
 		// skip cleanup if there was no error
 		if err == nil {
@@ -141,11 +141,13 @@ func (cs *Server) CreateVolume(
 		}
 	}()
 
-	rbdImageName := res.GetVolume().GetVolumeContext()["imageName"]
-	rbdPoolName := res.GetVolume().GetVolumeContext()["pool"]
+	rbdImageName := volumeContext["imageName"]
+	rbdPoolName := volumeContext["pool"]
+	// can be empty. if it was defined in config-map the rbd csi driver would have set it already
+	rbdRadosNameSpace := res.GetVolume().GetVolumeContext()["radosNamespace"]
 
 	// Step 2: Setup NVMe-oF resources
-	nvmeofData, err := cs.createNVMeoFResources(ctx, req, rbdPoolName, rbdImageName)
+	nvmeofData, err := cs.createNVMeoFResources(ctx, req, rbdPoolName, rbdImageName, rbdRadosNameSpace)
 	if err != nil {
 		log.ErrorLog(ctx, "NVMe-oF resource setup failed for volumeID %s: %v", volumeID, err)
 
@@ -629,6 +631,7 @@ func (cs *Server) createNVMeoFResources(
 	req *csi.CreateVolumeRequest,
 	rbdPoolName,
 	rbdImageName string,
+	rbdRadosNameSpace string,
 ) (*nvmeof.NVMeoFVolumeData, error) {
 	// Step 1: Extract parameters (already validated)
 	params := req.GetParameters()
@@ -697,7 +700,7 @@ func (cs *Server) createNVMeoFResources(
 		nvmeofData.ListenerInfo)
 
 	// Step 4: Create namespace and set its uuid
-	nsid, err := gateway.CreateNamespace(ctx, nvmeofData.SubsystemNQN, rbdPoolName, rbdImageName)
+	nsid, err := gateway.CreateNamespace(ctx, nvmeofData.SubsystemNQN, rbdRadosNameSpace, rbdPoolName, rbdImageName)
 	if err != nil {
 		return nil, fmt.Errorf("namespace creation failed: %w", err)
 	}

internal/nvmeof/nvmeof.go

@@ -104,7 +104,10 @@ func (c *GatewayRpcClient) Destroy() error {
 }
 
 // CreateNamespace creates a namespace in a subsystem.
-func (gw *GatewayRpcClient) CreateNamespace(ctx context.Context, subsystemNQN, poolName, imageName string,
+func (gw *GatewayRpcClient) CreateNamespace(
+	ctx context.Context,
+	subsystemNQN string,
+	radosNamespace, poolName, imageName string,
 ) (uint32, error) {
 	log.DebugLog(ctx, "Creating namespace for RBD %s/%s in subsystem %s",
 		poolName, imageName, subsystemNQN)
@@ -125,7 +128,9 @@ func (gw *GatewayRpcClient) CreateNamespace(ctx context.Context, subsystemNQN, p
 		// DisableAutoResize: nil,
 		// ReadOnly:          nil,
 	}
-
+	if radosNamespace != "" {
+		req.RadosNamespaceName = &radosNamespace
+	}
 	resp, err := gw.client.NamespaceAdd(ctx, req)
 	switch {
 	case err != nil: