mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-11 22:10:11 +01:00
406 lines
11 KiB
Go
406 lines
11 KiB
Go
/*
|
|
Copyright © 2019 The OpenEBS Authors
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
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.
|
|
*/
|
|
|
|
package driver
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/container-storage-interface/spec/lib/go/csi"
|
|
apis "github.com/openebs/zfs-localpv/pkg/apis/openebs.io/zfs/v1"
|
|
"github.com/openebs/zfs-localpv/pkg/builder/volbuilder"
|
|
k8sapi "github.com/openebs/zfs-localpv/pkg/client/k8s/v1alpha1"
|
|
"github.com/openebs/zfs-localpv/pkg/mgmt/backup"
|
|
"github.com/openebs/zfs-localpv/pkg/mgmt/restore"
|
|
"github.com/openebs/zfs-localpv/pkg/mgmt/snapshot"
|
|
"github.com/openebs/zfs-localpv/pkg/mgmt/volume"
|
|
"github.com/openebs/zfs-localpv/pkg/zfs"
|
|
"golang.org/x/net/context"
|
|
"golang.org/x/sys/unix"
|
|
"google.golang.org/grpc/codes"
|
|
"google.golang.org/grpc/status"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/klog"
|
|
"sigs.k8s.io/controller-runtime/pkg/runtime/signals"
|
|
)
|
|
|
|
// node is the server implementation
|
|
// for CSI NodeServer
|
|
type node struct {
|
|
driver *CSIDriver
|
|
}
|
|
|
|
// NewNode returns a new instance
|
|
// of CSI NodeServer
|
|
func NewNode(d *CSIDriver) csi.NodeServer {
|
|
var ControllerMutex = sync.RWMutex{}
|
|
|
|
// set up signals so we handle the first shutdown signal gracefully
|
|
stopCh := signals.SetupSignalHandler()
|
|
|
|
// start the zfsvolume watcher
|
|
go func() {
|
|
err := volume.Start(&ControllerMutex, stopCh)
|
|
if err != nil {
|
|
klog.Fatalf("Failed to start ZFS volume management controller: %s", err.Error())
|
|
}
|
|
}()
|
|
|
|
// start the snapshot watcher
|
|
go func() {
|
|
err := snapshot.Start(&ControllerMutex, stopCh)
|
|
if err != nil {
|
|
klog.Fatalf("Failed to start ZFS volume snapshot management controller: %s", err.Error())
|
|
}
|
|
}()
|
|
|
|
// start the backup controller
|
|
go func() {
|
|
err := backup.Start(&ControllerMutex, stopCh)
|
|
if err != nil {
|
|
klog.Fatalf("Failed to start ZFS backup management controller: %s", err.Error())
|
|
}
|
|
}()
|
|
|
|
// start the restore controller
|
|
go func() {
|
|
err := restore.Start(&ControllerMutex, stopCh)
|
|
if err != nil {
|
|
klog.Fatalf("Failed to start ZFS restore management controller: %s", err.Error())
|
|
}
|
|
}()
|
|
|
|
return &node{
|
|
driver: d,
|
|
}
|
|
}
|
|
|
|
// GetVolAndMountInfo get volume and mount info from node csi volume request
|
|
func GetVolAndMountInfo(
|
|
req *csi.NodePublishVolumeRequest,
|
|
) (*apis.ZFSVolume, *zfs.MountInfo, error) {
|
|
var mountinfo zfs.MountInfo
|
|
|
|
mountinfo.FSType = req.GetVolumeCapability().GetMount().GetFsType()
|
|
mountinfo.MountPath = req.GetTargetPath()
|
|
mountinfo.MountOptions = append(mountinfo.MountOptions, req.GetVolumeCapability().GetMount().GetMountFlags()...)
|
|
|
|
if req.GetReadonly() {
|
|
mountinfo.MountOptions = append(mountinfo.MountOptions, "ro")
|
|
}
|
|
|
|
getOptions := metav1.GetOptions{}
|
|
vol, err := volbuilder.NewKubeclient().
|
|
WithNamespace(zfs.OpenEBSNamespace).
|
|
Get(req.GetVolumeId(), getOptions)
|
|
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
return vol, &mountinfo, nil
|
|
}
|
|
|
|
// NodePublishVolume publishes (mounts) the volume
|
|
// at the corresponding node at a given path
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodePublishVolume(
|
|
ctx context.Context,
|
|
req *csi.NodePublishVolumeRequest,
|
|
) (*csi.NodePublishVolumeResponse, error) {
|
|
|
|
var (
|
|
err error
|
|
)
|
|
|
|
if err = ns.validateNodePublishReq(req); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
vol, mountInfo, err := GetVolAndMountInfo(req)
|
|
if err != nil {
|
|
return nil, status.Error(codes.Internal, err.Error())
|
|
}
|
|
// If the access type is block, do nothing for stage
|
|
switch req.GetVolumeCapability().GetAccessType().(type) {
|
|
case *csi.VolumeCapability_Block:
|
|
// attempt block mount operation on the requested path
|
|
err = zfs.MountBlock(vol, mountInfo)
|
|
case *csi.VolumeCapability_Mount:
|
|
// attempt filesystem mount operation on the requested path
|
|
err = zfs.MountFilesystem(vol, mountInfo)
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, status.Error(codes.Internal, err.Error())
|
|
}
|
|
return &csi.NodePublishVolumeResponse{}, nil
|
|
}
|
|
|
|
// NodeUnpublishVolume unpublishes (unmounts) the volume
|
|
// from the corresponding node from the given path
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodeUnpublishVolume(
|
|
ctx context.Context,
|
|
req *csi.NodeUnpublishVolumeRequest,
|
|
) (*csi.NodeUnpublishVolumeResponse, error) {
|
|
|
|
var (
|
|
err error
|
|
vol *apis.ZFSVolume
|
|
)
|
|
|
|
if err = ns.validateNodeUnpublishReq(req); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
targetPath := req.GetTargetPath()
|
|
volumeID := req.GetVolumeId()
|
|
|
|
if vol, err = zfs.GetZFSVolume(volumeID); err != nil {
|
|
return nil, status.Errorf(codes.Internal,
|
|
"not able to get the ZFSVolume %s err : %s",
|
|
volumeID, err.Error())
|
|
}
|
|
|
|
err = zfs.UmountVolume(vol, targetPath)
|
|
|
|
if err != nil {
|
|
return nil, status.Errorf(codes.Internal,
|
|
"unable to umount the volume %s err : %s",
|
|
volumeID, err.Error())
|
|
}
|
|
klog.Infof("hostpath: volume %s path: %s has been unmounted.",
|
|
volumeID, targetPath)
|
|
|
|
return &csi.NodeUnpublishVolumeResponse{}, nil
|
|
}
|
|
|
|
// NodeGetInfo returns node details
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodeGetInfo(
|
|
ctx context.Context,
|
|
req *csi.NodeGetInfoRequest,
|
|
) (*csi.NodeGetInfoResponse, error) {
|
|
|
|
node, err := k8sapi.GetNode(ns.driver.config.NodeID)
|
|
if err != nil {
|
|
klog.Errorf("failed to get the node %s", ns.driver.config.NodeID)
|
|
return nil, err
|
|
}
|
|
/*
|
|
* The driver will support all the keys and values defined in the node's label.
|
|
* if nodes are labeled with the below keys and values
|
|
* map[beta.kubernetes.io/arch:amd64 beta.kubernetes.io/os:linux kubernetes.io/arch:amd64 kubernetes.io/hostname:pawan-node-1 kubernetes.io/os:linux node-role.kubernetes.io/worker:true openebs.io/zone:zone1 openebs.io/zpool:ssd]
|
|
* The driver will support below key and values
|
|
* {
|
|
* beta.kubernetes.io/arch:amd64
|
|
* beta.kubernetes.io/os:linux
|
|
* kubernetes.io/arch:amd64
|
|
* kubernetes.io/hostname:pawan-node-1
|
|
* kubernetes.io/os:linux
|
|
* node-role.kubernetes.io/worker:true
|
|
* openebs.io/zone:zone1
|
|
* openebs.io/zpool:ssd
|
|
* }
|
|
*/
|
|
|
|
// support all the keys that node has
|
|
topology := node.Labels
|
|
|
|
// add driver's topology key
|
|
topology[zfs.ZFSTopologyKey] = ns.driver.config.NodeID
|
|
|
|
return &csi.NodeGetInfoResponse{
|
|
NodeId: ns.driver.config.NodeID,
|
|
AccessibleTopology: &csi.Topology{
|
|
Segments: topology,
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
// NodeGetCapabilities returns capabilities supported
|
|
// by this node service
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodeGetCapabilities(
|
|
ctx context.Context,
|
|
req *csi.NodeGetCapabilitiesRequest,
|
|
) (*csi.NodeGetCapabilitiesResponse, error) {
|
|
|
|
return &csi.NodeGetCapabilitiesResponse{
|
|
Capabilities: []*csi.NodeServiceCapability{
|
|
{
|
|
Type: &csi.NodeServiceCapability_Rpc{
|
|
Rpc: &csi.NodeServiceCapability_RPC{
|
|
Type: csi.NodeServiceCapability_RPC_GET_VOLUME_STATS,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
Type: &csi.NodeServiceCapability_Rpc{
|
|
Rpc: &csi.NodeServiceCapability_RPC{
|
|
Type: csi.NodeServiceCapability_RPC_EXPAND_VOLUME,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
// TODO
|
|
// This needs to be implemented
|
|
//
|
|
// NodeStageVolume mounts the volume on the staging
|
|
// path
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodeStageVolume(
|
|
ctx context.Context,
|
|
req *csi.NodeStageVolumeRequest,
|
|
) (*csi.NodeStageVolumeResponse, error) {
|
|
|
|
return &csi.NodeStageVolumeResponse{}, nil
|
|
}
|
|
|
|
// NodeUnstageVolume unmounts the volume from
|
|
// the staging path
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodeUnstageVolume(
|
|
ctx context.Context,
|
|
req *csi.NodeUnstageVolumeRequest,
|
|
) (*csi.NodeUnstageVolumeResponse, error) {
|
|
|
|
return &csi.NodeUnstageVolumeResponse{}, nil
|
|
}
|
|
|
|
// TODO
|
|
// Verify if this needs to be implemented
|
|
//
|
|
// NodeExpandVolume resizes the filesystem if required
|
|
//
|
|
// If ControllerExpandVolumeResponse returns true in
|
|
// node_expansion_required then FileSystemResizePending
|
|
// condition will be added to PVC and NodeExpandVolume
|
|
// operation will be queued on kubelet
|
|
//
|
|
// This implements csi.NodeServer
|
|
func (ns *node) NodeExpandVolume(
|
|
ctx context.Context,
|
|
req *csi.NodeExpandVolumeRequest,
|
|
) (*csi.NodeExpandVolumeResponse, error) {
|
|
|
|
volumeID := req.GetVolumeId()
|
|
vol, err := zfs.GetZFSVolume(volumeID)
|
|
|
|
if err != nil {
|
|
return nil, status.Errorf(
|
|
codes.Internal,
|
|
"failed to handle NodeExpandVolume Request for %s, {%s}",
|
|
req.VolumeId,
|
|
err.Error(),
|
|
)
|
|
}
|
|
if err = zfs.ResizeZFSVolume(vol, req.GetVolumePath()); err != nil {
|
|
return nil, status.Errorf(
|
|
codes.Internal,
|
|
"failed to handle NodeExpandVolume Request for %s, {%s}",
|
|
req.VolumeId,
|
|
err.Error(),
|
|
)
|
|
}
|
|
|
|
return &csi.NodeExpandVolumeResponse{
|
|
CapacityBytes: req.GetCapacityRange().GetRequiredBytes(),
|
|
}, nil
|
|
}
|
|
|
|
// NodeGetVolumeStats returns statistics for the
|
|
// given volume
|
|
func (ns *node) NodeGetVolumeStats(
|
|
ctx context.Context,
|
|
req *csi.NodeGetVolumeStatsRequest,
|
|
) (*csi.NodeGetVolumeStatsResponse, error) {
|
|
|
|
volID := req.GetVolumeId()
|
|
path := req.GetVolumePath()
|
|
|
|
if len(volID) == 0 {
|
|
return nil, status.Error(codes.InvalidArgument, "volume id is not provided")
|
|
}
|
|
if len(path) == 0 {
|
|
return nil, status.Error(codes.InvalidArgument, "path is not provided")
|
|
}
|
|
|
|
if zfs.IsMountPath(path) == false {
|
|
return nil, status.Error(codes.InvalidArgument, "path is not a mount path")
|
|
}
|
|
|
|
var sfs unix.Statfs_t
|
|
if err := unix.Statfs(path, &sfs); err != nil {
|
|
return nil, status.Errorf(codes.Internal, "statfs on %s failed: %v", path, err)
|
|
}
|
|
|
|
var usage []*csi.VolumeUsage
|
|
usage = append(usage, &csi.VolumeUsage{
|
|
Unit: csi.VolumeUsage_BYTES,
|
|
Total: int64(sfs.Blocks) * sfs.Bsize,
|
|
Used: int64(sfs.Blocks-sfs.Bfree) * sfs.Bsize,
|
|
Available: int64(sfs.Bavail) * sfs.Bsize,
|
|
})
|
|
usage = append(usage, &csi.VolumeUsage{
|
|
Unit: csi.VolumeUsage_INODES,
|
|
Total: int64(sfs.Files),
|
|
Used: int64(sfs.Files - sfs.Ffree),
|
|
Available: int64(sfs.Ffree),
|
|
})
|
|
|
|
return &csi.NodeGetVolumeStatsResponse{Usage: usage}, nil
|
|
}
|
|
|
|
func (ns *node) validateNodePublishReq(
|
|
req *csi.NodePublishVolumeRequest,
|
|
) error {
|
|
if req.GetVolumeCapability() == nil {
|
|
return status.Error(codes.InvalidArgument,
|
|
"Volume capability missing in request")
|
|
}
|
|
|
|
if len(req.GetVolumeId()) == 0 {
|
|
return status.Error(codes.InvalidArgument,
|
|
"Volume ID missing in request")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (ns *node) validateNodeUnpublishReq(
|
|
req *csi.NodeUnpublishVolumeRequest,
|
|
) error {
|
|
if req.GetVolumeId() == "" {
|
|
return status.Error(codes.InvalidArgument,
|
|
"Volume ID missing in request")
|
|
}
|
|
|
|
if req.GetTargetPath() == "" {
|
|
return status.Error(codes.InvalidArgument,
|
|
"Target path missing in request")
|
|
}
|
|
return nil
|
|
}
|