rbd: DisAllow CreateVoulume for missmatch volume size

If the requested volume size and the snapshot or the
parent volume from which the clone is to be created
is not equal cephcsi returns an error message.

updates #1188

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2020-07-16 15:28:27 +05:30 committed by mergify[bot]
parent b949d5f9c7
commit 684cb13c54

View File

@ -175,6 +175,33 @@ func getGRPCErrorForCreateVolume(err error) error {
return status.Error(codes.Internal, err.Error())
}
// validateRequestedVolumeSize validates the request volume size with the
// source snapshot or volume size, if there is a size missmatch it returns an error.
func validateRequestedVolumeSize(rbdVol, parentVol *rbdVolume, rbdSnap *rbdSnapshot, cr *util.Credentials) error {
if rbdSnap != nil {
vol := generateVolFromSnap(rbdSnap)
err := vol.Connect(cr)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
defer vol.Destroy()
err = vol.getImageInfo()
if err != nil {
return status.Error(codes.Internal, err.Error())
}
if rbdVol.VolSize != vol.VolSize {
return status.Errorf(codes.InvalidArgument, "size missmatch, requested volume size %d and source snapshot size %d", rbdVol.VolSize, vol.VolSize)
}
}
if parentVol != nil {
if rbdVol.VolSize != parentVol.VolSize {
return status.Errorf(codes.InvalidArgument, "size missmatch, requested volume size %d and source volume size %d", rbdVol.VolSize, parentVol.VolSize)
}
}
return nil
}
// CreateVolume creates the volume in backend
func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
if err := cs.validateVolumeReq(ctx, req); err != nil {
@ -227,6 +254,11 @@ func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
return buildCreateVolumeResponse(ctx, req, rbdVol)
}
err = validateRequestedVolumeSize(rbdVol, parentVol, rbdSnap, cr)
if err != nil {
return nil, err
}
err = flattenParentImage(ctx, parentVol, cr)
if err != nil {
return nil, err