mirror of
https://github.com/ceph/ceph-csi.git
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b5b8e46460
This change adds the ability to define a `multiNodeWritable` option in the Storage Class. This change does a number of things: 1. Allow multi-node-multi-writer access modes if the SC options is enabled 2. Bypass the watcher checks for MultiNodeMultiWriter Volumes 3. Maintains existing watcher checks for SingleNodeWriter access modes regardless of the StorageClass option. fix lint-errors
129 lines
3.9 KiB
Go
129 lines
3.9 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package rbd
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import (
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"github.com/ceph/ceph-csi/pkg/csi-common"
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"github.com/ceph/ceph-csi/pkg/util"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"k8s.io/klog"
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"k8s.io/kubernetes/pkg/util/mount"
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"k8s.io/kubernetes/pkg/util/nsenter"
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"k8s.io/utils/exec"
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)
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// PluginFolder defines the location of rbdplugin
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const (
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PluginFolder = "/var/lib/kubelet/plugins/csi-rbdplugin"
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rbdDefaultAdminID = "admin"
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rbdDefaultUserID = rbdDefaultAdminID
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)
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// Driver contains the default identity,node and controller struct
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type Driver struct {
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cd *csicommon.CSIDriver
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ids *IdentityServer
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ns *NodeServer
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cs *ControllerServer
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}
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var (
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version = "1.0.0"
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)
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// NewDriver returns new rbd driver
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func NewDriver() *Driver {
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return &Driver{}
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}
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// NewIdentityServer initialize a identity server for rbd CSI driver
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func NewIdentityServer(d *csicommon.CSIDriver) *IdentityServer {
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return &IdentityServer{
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DefaultIdentityServer: csicommon.NewDefaultIdentityServer(d),
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}
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}
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// NewControllerServer initialize a controller server for rbd CSI driver
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func NewControllerServer(d *csicommon.CSIDriver, cachePersister util.CachePersister) *ControllerServer {
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return &ControllerServer{
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DefaultControllerServer: csicommon.NewDefaultControllerServer(d),
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MetadataStore: cachePersister,
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}
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}
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// NewNodeServer initialize a node server for rbd CSI driver.
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func NewNodeServer(d *csicommon.CSIDriver, containerized bool) (*NodeServer, error) {
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mounter := mount.New("")
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if containerized {
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ne, err := nsenter.NewNsenter(nsenter.DefaultHostRootFsPath, exec.New())
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if err != nil {
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return nil, err
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}
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mounter = mount.NewNsenterMounter("", ne)
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}
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return &NodeServer{
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DefaultNodeServer: csicommon.NewDefaultNodeServer(d),
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mounter: mounter,
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}, nil
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}
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// Run start a non-blocking grpc controller,node and identityserver for
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// rbd CSI driver which can serve multiple parallel requests
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func (r *Driver) Run(driverName, nodeID, endpoint string, containerized bool, cachePersister util.CachePersister) {
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var err error
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klog.Infof("Driver: %v version: %v", driverName, version)
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// Initialize default library driver
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r.cd = csicommon.NewCSIDriver(driverName, version, nodeID)
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if r.cd == nil {
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klog.Fatalln("Failed to initialize CSI Driver.")
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}
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r.cd.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
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csi.ControllerServiceCapability_RPC_PUBLISH_UNPUBLISH_VOLUME,
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csi.ControllerServiceCapability_RPC_LIST_VOLUMES,
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_SNAPSHOT,
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csi.ControllerServiceCapability_RPC_LIST_SNAPSHOTS,
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csi.ControllerServiceCapability_RPC_CLONE_VOLUME,
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})
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// TODO: JDG Should also look at remaining modes like MULT_NODE_READER (SINGLE_READER)
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r.cd.AddVolumeCapabilityAccessModes(
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[]csi.VolumeCapability_AccessMode_Mode{
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csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
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csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER})
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// Create GRPC servers
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r.ids = NewIdentityServer(r.cd)
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r.ns, err = NewNodeServer(r.cd, containerized)
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if err != nil {
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klog.Fatalf("failed to start node server, err %v\n", err)
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}
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r.cs = NewControllerServer(r.cd, cachePersister)
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if err = r.cs.LoadExDataFromMetadataStore(); err != nil {
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klog.Fatalf("failed to load metadata from store, err %v\n", err)
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}
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s := csicommon.NewNonBlockingGRPCServer()
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s.Start(endpoint, r.ids, r.cs, r.ns)
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s.Wait()
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}
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