mirror of
https://github.com/ceph/ceph-csi.git
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881f59d142
This values will be added at both nodestage and nodepublish for rbd, nbd and ceph kernel client. As cephfs fuse doesnot support this value, this is added only during the nodepublish. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
314 lines
10 KiB
Go
314 lines
10 KiB
Go
/*
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Copyright 2018 The Ceph-CSI 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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"context"
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"fmt"
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"os"
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csicommon "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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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"k8s.io/klog"
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)
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// NodeServer struct of ceph CSI driver with supported methods of CSI
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// node server spec.
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type NodeServer struct {
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*csicommon.DefaultNodeServer
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// A map storing all volumes with ongoing operations so that additional operations
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// for that same volume (as defined by VolumeID) return an Aborted error
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VolumeLocks *util.VolumeLocks
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}
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func getCredentialsForVolume(volOptions *volumeOptions, req *csi.NodeStageVolumeRequest) (*util.Credentials, error) {
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var (
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err error
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cr *util.Credentials
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secrets = req.GetSecrets()
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)
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if volOptions.ProvisionVolume {
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// The volume is provisioned dynamically, use passed in admin credentials
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cr, err = util.NewAdminCredentials(secrets)
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if err != nil {
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return nil, fmt.Errorf("failed to get admin credentials from node stage secrets: %v", err)
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}
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} else {
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// The volume is pre-made, credentials are in node stage secrets
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cr, err = util.NewUserCredentials(req.GetSecrets())
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if err != nil {
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return nil, fmt.Errorf("failed to get user credentials from node stage secrets: %v", err)
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}
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}
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return cr, nil
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}
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// NodeStageVolume mounts the volume to a staging path on the node.
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func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVolumeRequest) (*csi.NodeStageVolumeResponse, error) {
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var (
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volOptions *volumeOptions
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)
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if err := util.ValidateNodeStageVolumeRequest(req); err != nil {
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return nil, err
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}
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// Configuration
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stagingTargetPath := req.GetStagingTargetPath()
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volID := volumeID(req.GetVolumeId())
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if acquired := ns.VolumeLocks.TryAcquire(req.GetVolumeId()); !acquired {
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klog.Infof(util.Log(ctx, util.VolumeOperationAlreadyExistsFmt), volID)
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return nil, status.Errorf(codes.Aborted, util.VolumeOperationAlreadyExistsFmt, req.GetVolumeId())
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}
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defer ns.VolumeLocks.Release(req.GetVolumeId())
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volOptions, _, err := newVolumeOptionsFromVolID(ctx, string(volID), req.GetVolumeContext(), req.GetSecrets())
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if err != nil {
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if _, ok := err.(ErrInvalidVolID); !ok {
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return nil, status.Error(codes.Internal, err.Error())
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}
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// check for pre-provisioned volumes (plugin versions > 1.0.0)
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volOptions, _, err = newVolumeOptionsFromStaticVolume(string(volID), req.GetVolumeContext())
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if err != nil {
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if _, ok := err.(ErrNonStaticVolume); !ok {
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return nil, status.Error(codes.Internal, err.Error())
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}
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// check for volumes from plugin versions <= 1.0.0
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volOptions, _, err = newVolumeOptionsFromVersion1Context(string(volID), req.GetVolumeContext(),
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req.GetSecrets())
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if err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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}
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}
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// Check if the volume is already mounted
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isMnt, err := util.IsMountPoint(stagingTargetPath)
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if err != nil {
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klog.Errorf(util.Log(ctx, "stat failed: %v"), err)
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return nil, status.Error(codes.Internal, err.Error())
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}
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if isMnt {
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klog.Infof(util.Log(ctx, "cephfs: volume %s is already mounted to %s, skipping"), volID, stagingTargetPath)
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return &csi.NodeStageVolumeResponse{}, nil
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}
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// It's not, mount now
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if err = ns.mount(ctx, volOptions, req); err != nil {
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return nil, err
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}
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klog.Infof(util.Log(ctx, "cephfs: successfully mounted volume %s to %s"), volID, stagingTargetPath)
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return &csi.NodeStageVolumeResponse{}, nil
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}
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func (*NodeServer) mount(ctx context.Context, volOptions *volumeOptions, req *csi.NodeStageVolumeRequest) error {
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stagingTargetPath := req.GetStagingTargetPath()
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volID := volumeID(req.GetVolumeId())
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cr, err := getCredentialsForVolume(volOptions, req)
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if err != nil {
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klog.Errorf(util.Log(ctx, "failed to get ceph credentials for volume %s: %v"), volID, err)
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return status.Error(codes.Internal, err.Error())
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}
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defer cr.DeleteCredentials()
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m, err := newMounter(volOptions)
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if err != nil {
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klog.Errorf(util.Log(ctx, "failed to create mounter for volume %s: %v"), volID, err)
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return status.Error(codes.Internal, err.Error())
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}
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klog.V(4).Infof(util.Log(ctx, "cephfs: mounting volume %s with %s"), volID, m.name())
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if err = m.mount(ctx, stagingTargetPath, cr, volOptions); err != nil {
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klog.Errorf(util.Log(ctx, "failed to mount volume %s: %v"), volID, err)
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return status.Error(codes.Internal, err.Error())
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}
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if err := volumeMountCache.nodeStageVolume(ctx, req.GetVolumeId(), stagingTargetPath, volOptions.Mounter, req.GetSecrets()); err != nil {
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klog.Warningf(util.Log(ctx, "mount-cache: failed to stage volume %s %s: %v"), volID, stagingTargetPath, err)
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}
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return nil
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}
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// NodePublishVolume mounts the volume mounted to the staging path to the target
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// path
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func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
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mountOptions := []string{"bind", "_netdev"}
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if err := util.ValidateNodePublishVolumeRequest(req); err != nil {
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return nil, err
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}
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targetPath := req.GetTargetPath()
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volID := req.GetVolumeId()
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if acquired := ns.VolumeLocks.TryAcquire(volID); !acquired {
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klog.Infof(util.Log(ctx, util.VolumeOperationAlreadyExistsFmt), volID)
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return nil, status.Errorf(codes.Aborted, util.VolumeOperationAlreadyExistsFmt, volID)
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}
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defer ns.VolumeLocks.Release(volID)
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if err := util.CreateMountPoint(targetPath); err != nil {
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klog.Errorf(util.Log(ctx, "failed to create mount point at %s: %v"), targetPath, err)
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return nil, status.Error(codes.Internal, err.Error())
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}
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if req.GetReadonly() {
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mountOptions = append(mountOptions, "ro")
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}
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mountOptions = csicommon.ConstructMountOptions(mountOptions, req.GetVolumeCapability())
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// Check if the volume is already mounted
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isMnt, err := util.IsMountPoint(targetPath)
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if err != nil {
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klog.Errorf(util.Log(ctx, "stat failed: %v"), err)
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return nil, status.Error(codes.Internal, err.Error())
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}
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if isMnt {
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klog.Infof(util.Log(ctx, "cephfs: volume %s is already bind-mounted to %s"), volID, targetPath)
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return &csi.NodePublishVolumeResponse{}, nil
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}
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// It's not, mount now
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if err = bindMount(ctx, req.GetStagingTargetPath(), req.GetTargetPath(), req.GetReadonly(), mountOptions); err != nil {
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klog.Errorf(util.Log(ctx, "failed to bind-mount volume %s: %v"), volID, err)
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return nil, status.Error(codes.Internal, err.Error())
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}
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if err = volumeMountCache.nodePublishVolume(ctx, volID, targetPath, req.GetReadonly()); err != nil {
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klog.Warningf(util.Log(ctx, "mount-cache: failed to publish volume %s %s: %v"), volID, targetPath, err)
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}
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klog.Infof(util.Log(ctx, "cephfs: successfully bind-mounted volume %s to %s"), volID, targetPath)
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// #nosec - allow anyone to write inside the target path
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err = os.Chmod(targetPath, 0777)
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if err != nil {
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klog.Errorf(util.Log(ctx, "failed to change targetpath permission for volume %s: %v"), volID, err)
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return nil, status.Error(codes.Internal, err.Error())
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}
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return &csi.NodePublishVolumeResponse{}, nil
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}
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// NodeUnpublishVolume unmounts the volume from the target path
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func (ns *NodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpublishVolumeRequest) (*csi.NodeUnpublishVolumeResponse, error) {
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var err error
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if err = util.ValidateNodeUnpublishVolumeRequest(req); err != nil {
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return nil, err
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}
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volID := req.GetVolumeId()
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targetPath := req.GetTargetPath()
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if acquired := ns.VolumeLocks.TryAcquire(volID); !acquired {
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klog.Infof(util.Log(ctx, util.VolumeOperationAlreadyExistsFmt), volID)
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return nil, status.Errorf(codes.Aborted, util.VolumeOperationAlreadyExistsFmt, volID)
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}
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defer ns.VolumeLocks.Release(volID)
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if err = volumeMountCache.nodeUnPublishVolume(ctx, volID, targetPath); err != nil {
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klog.Warningf(util.Log(ctx, "mount-cache: failed to unpublish volume %s %s: %v"), volID, targetPath, err)
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}
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// Unmount the bind-mount
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if err = unmountVolume(ctx, targetPath); err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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err = os.Remove(targetPath)
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if err != nil && !os.IsNotExist(err) {
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return nil, status.Error(codes.Internal, err.Error())
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}
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klog.Infof(util.Log(ctx, "cephfs: successfully unbinded volume %s from %s"), req.GetVolumeId(), targetPath)
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return &csi.NodeUnpublishVolumeResponse{}, nil
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}
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// NodeUnstageVolume unstages the volume from the staging path
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func (ns *NodeServer) NodeUnstageVolume(ctx context.Context, req *csi.NodeUnstageVolumeRequest) (*csi.NodeUnstageVolumeResponse, error) {
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var err error
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if err = util.ValidateNodeUnstageVolumeRequest(req); err != nil {
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return nil, err
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}
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volID := req.GetVolumeId()
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if acquired := ns.VolumeLocks.TryAcquire(volID); !acquired {
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klog.Infof(util.Log(ctx, util.VolumeOperationAlreadyExistsFmt), volID)
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return nil, status.Errorf(codes.Aborted, util.VolumeOperationAlreadyExistsFmt, volID)
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}
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defer ns.VolumeLocks.Release(volID)
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stagingTargetPath := req.GetStagingTargetPath()
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if err = volumeMountCache.nodeUnStageVolume(volID); err != nil {
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klog.Warningf(util.Log(ctx, "mount-cache: failed to unstage volume %s %s: %v"), volID, stagingTargetPath, err)
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}
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// Unmount the volume
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if err = unmountVolume(ctx, stagingTargetPath); err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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klog.Infof(util.Log(ctx, "cephfs: successfully unmounted volume %s from %s"), req.GetVolumeId(), stagingTargetPath)
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return &csi.NodeUnstageVolumeResponse{}, nil
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}
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// NodeGetCapabilities returns the supported capabilities of the node server
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func (ns *NodeServer) NodeGetCapabilities(ctx context.Context, req *csi.NodeGetCapabilitiesRequest) (*csi.NodeGetCapabilitiesResponse, error) {
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return &csi.NodeGetCapabilitiesResponse{
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Capabilities: []*csi.NodeServiceCapability{
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{
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Type: &csi.NodeServiceCapability_Rpc{
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Rpc: &csi.NodeServiceCapability_RPC{
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Type: csi.NodeServiceCapability_RPC_STAGE_UNSTAGE_VOLUME,
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},
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},
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},
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{
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Type: &csi.NodeServiceCapability_Rpc{
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Rpc: &csi.NodeServiceCapability_RPC{
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Type: csi.NodeServiceCapability_RPC_GET_VOLUME_STATS,
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},
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},
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},
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},
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}, nil
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}
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