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c515a013d3
The driver will now probe for either ceph fuse/kernel every time it's about to mount a cephfs volume. This also affects CreateVolume/DeleteVolume where the mounting was hard-coded to ceph kernel client till now - mounter configuration and probing are now honored.
127 lines
3.2 KiB
Go
127 lines
3.2 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 cephfs
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import (
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"os"
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"github.com/golang/glog"
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"github.com/container-storage-interface/spec/lib/go/csi/v0"
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"github.com/kubernetes-csi/drivers/pkg/csi-common"
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)
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const (
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PluginFolder = "/var/lib/kubelet/plugins/csi-cephfsplugin"
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Version = "0.3.0"
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)
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type cephfsDriver struct {
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driver *csicommon.CSIDriver
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is *identityServer
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ns *nodeServer
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cs *controllerServer
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caps []*csi.VolumeCapability_AccessMode
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cscaps []*csi.ControllerServiceCapability
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}
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var (
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driver *cephfsDriver
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DefaultVolumeMounter string
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)
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func NewCephFSDriver() *cephfsDriver {
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return &cephfsDriver{}
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}
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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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func NewControllerServer(d *csicommon.CSIDriver) *controllerServer {
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return &controllerServer{
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DefaultControllerServer: csicommon.NewDefaultControllerServer(d),
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}
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}
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func NewNodeServer(d *csicommon.CSIDriver) *nodeServer {
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return &nodeServer{
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DefaultNodeServer: csicommon.NewDefaultNodeServer(d),
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}
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}
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func (fs *cephfsDriver) Run(driverName, nodeId, endpoint, volumeMounter string) {
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glog.Infof("Driver: %v version: %v", driverName, Version)
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// Configuration
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if err := os.MkdirAll(controllerCacheRoot, 0755); err != nil {
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glog.Fatalf("cephfs: failed to create %s: %v", controllerCacheRoot, err)
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return
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}
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if err := loadControllerCache(); err != nil {
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glog.Errorf("cephfs: failed to read volume cache: %v", err)
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}
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if volumeMounter != "" {
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if err := validateMounter(volumeMounter); err != nil {
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glog.Fatalln(err)
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} else {
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DefaultVolumeMounter = volumeMounter
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}
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} else {
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availableMounters := getAvailableMounters()
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if len(availableMounters) == 0 {
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glog.Fatal("no ceph mounters found on system")
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}
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DefaultVolumeMounter = availableMounters[0]
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}
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glog.Infof("cephfs: setting default volume mounter to %s", DefaultVolumeMounter)
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// Initialize default library driver
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fs.driver = csicommon.NewCSIDriver(driverName, Version, nodeId)
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if fs.driver == nil {
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glog.Fatalln("Failed to initialize CSI driver")
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}
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fs.driver.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
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})
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fs.driver.AddVolumeCapabilityAccessModes([]csi.VolumeCapability_AccessMode_Mode{
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csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER,
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})
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// Create gRPC servers
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fs.is = NewIdentityServer(fs.driver)
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fs.ns = NewNodeServer(fs.driver)
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fs.cs = NewControllerServer(fs.driver)
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server := csicommon.NewNonBlockingGRPCServer()
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server.Start(endpoint, fs.is, fs.cs, fs.ns)
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server.Wait()
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}
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