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rbd: don't delete volume/snapshot if metadata creation fails

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This commit is contained in:
gman 2019-02-14 20:31:26 +01:00 committed by mergify[bot]
parent 8223ae325b
commit 1803a1be97
1 changed files with 33 additions and 26 deletions
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59
pkg/rbd/controllerserver.go
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@ -115,6 +115,15 @@ func parseVolCreateRequest(req *csi.CreateVolumeRequest) (*rbdVolume, error) {
return rbdVol, nil
}
func storeVolumeMetadata(vol *rbdVolume, cp util.CachePersister) error {
if err := cp.Create(vol.VolID, vol); err != nil {
klog.Errorf("failed to store metadata for volume %s: %v", vol.VolID, err)
return err
}
return nil
}
// CreateVolume creates the volume in backend and store the volume metadata
func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
@ -136,6 +145,11 @@ func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
// request
if exVol.VolSize >= req.GetCapacityRange().GetRequiredBytes() {
// existing volume is compatible with new request and should be reused.
if err = storeVolumeMetadata(exVol, cs.MetadataStore); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
// TODO (sbezverk) Do I need to make sure that RBD volume still exists?
return &csi.CreateVolumeResponse{
Volume: &csi.Volume{
@ -160,16 +174,13 @@ func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
if err != nil {
return nil, err
}
if createErr := cs.MetadataStore.Create(rbdVol.VolID, rbdVol); createErr != nil {
klog.Warningf("failed to store volume metadata with error: %v", err)
if err = deleteRBDImage(rbdVol, rbdVol.AdminID, req.GetSecrets()); err != nil {
klog.V(3).Infof("failed to delete rbd image: %s/%s with error: %v", rbdVol.Pool, rbdVol.VolName, err)
return nil, err
}
return nil, createErr
}
rbdVolumes[rbdVol.VolID] = rbdVol
if err = storeVolumeMetadata(rbdVol, cs.MetadataStore); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return &csi.CreateVolumeResponse{
Volume: &csi.Volume{
VolumeId: rbdVol.VolID,
@ -311,6 +322,10 @@ func (cs *ControllerServer) CreateSnapshot(ctx context.Context, req *csi.CreateS
// check for the requested source volume id and already allocated source volume id
if exSnap, err := getRBDSnapshotByName(req.GetName()); err == nil {
if req.SourceVolumeId == exSnap.SourceVolumeID {
if err = storeSnapshotMetadata(exSnap, cs.MetadataStore); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return &csi.CreateSnapshotResponse{
Snapshot: &csi.Snapshot{
SizeBytes: exSnap.SizeBytes,
@ -357,11 +372,12 @@ func (cs *ControllerServer) CreateSnapshot(ctx context.Context, req *csi.CreateS
rbdSnap.CreatedAt = ptypes.TimestampNow().GetSeconds()
if err = cs.storeSnapMetadata(rbdSnap, req.GetSecrets()); err != nil {
return nil, err
rbdSnapshots[snapshotID] = rbdSnap
if err = storeSnapshotMetadata(rbdSnap, cs.MetadataStore); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
rbdSnapshots[snapshotID] = rbdSnap
return &csi.CreateSnapshotResponse{
Snapshot: &csi.Snapshot{
SizeBytes: rbdSnap.SizeBytes,
@ -375,22 +391,13 @@ func (cs *ControllerServer) CreateSnapshot(ctx context.Context, req *csi.CreateS
}, nil
}
func (cs *ControllerServer) storeSnapMetadata(rbdSnap *rbdSnapshot, secret map[string]string) error {
errCreate := cs.MetadataStore.Create(rbdSnap.SnapID, rbdSnap)
if errCreate != nil {
klog.Warningf("rbd: failed to store snapInfo with error: %v", errCreate)
// Unprotect snapshot
err := unprotectSnapshot(rbdSnap, rbdSnap.AdminID, secret)
if err != nil {
return status.Errorf(codes.Unknown, "This Snapshot should be removed but failed to unprotect snapshot: %s/%s with error: %v", rbdSnap.Pool, rbdSnap.SnapName, err)
}
// Deleting snapshot
klog.V(4).Infof("deleting Snaphot %s", rbdSnap.SnapName)
if err = deleteSnapshot(rbdSnap, rbdSnap.AdminID, secret); err != nil {
return status.Errorf(codes.Unknown, "This Snapshot should be removed but failed to delete snapshot: %s/%s with error: %v", rbdSnap.Pool, rbdSnap.SnapName, err)
}
func storeSnapshotMetadata(rbdSnap *rbdSnapshot, cp util.CachePersister) error {
if err := cp.Create(rbdSnap.SnapID, rbdSnap); err != nil {
klog.Errorf("failed to store metadata for snapshot %s: %v", rbdSnap.SnapID, err)
return err
}
return errCreate
return nil
}
func (cs *ControllerServer) validateSnapshotReq(req *csi.CreateSnapshotRequest) error {