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Handle Delete operation if pool not found

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If the backend rbd or cephfs pool is already deleted
we need to return success to the  DeleteVolume RPC
call to make it idempotent.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2020-01-31 14:19:11 +05:30
committed by mergify[bot]
parent 034b123478
commit 8dcb6a6105
8 changed files with 144 additions and 7 deletions
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30
pkg/rbd/controllerserver.go
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@ -258,6 +258,12 @@ func (cs *ControllerServer) checkSnapshot(ctx context.Context, req *csi.CreateVo
if _, ok := err.(ErrSnapNotFound); !ok {
return status.Error(codes.Internal, err.Error())
}
if _, ok := err.(util.ErrPoolNotFound); ok {
klog.Errorf(util.Log(ctx, "failed to get backend snapshot for %s: %v"), snapshotID, err)
return status.Error(codes.InvalidArgument, err.Error())
}
return status.Error(codes.InvalidArgument, "missing requested Snapshot ID")
}
@ -344,6 +350,11 @@ func (cs *ControllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
rbdVol := &rbdVolume{}
if err = genVolFromVolID(ctx, rbdVol, volumeID, cr, req.GetSecrets()); err != nil {
if _, ok := err.(util.ErrPoolNotFound); ok {
klog.Warningf(util.Log(ctx, "failed to get backend volume for %s: %v"), volumeID, err)
return &csi.DeleteVolumeResponse{}, nil
}
// If error is ErrInvalidVolID it could be a version 1.0.0 or lower volume, attempt
// to process it as such
if _, ok := err.(ErrInvalidVolID); ok {
@ -360,6 +371,7 @@ func (cs *ControllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
// or partially complete (image and imageOMap are garbage collected already), hence return
// success as deletion is complete
if _, ok := err.(util.ErrKeyNotFound); ok {
klog.Warningf(util.Log(ctx, "Failed to volume options for %s: %v"), volumeID, err)
return &csi.DeleteVolumeResponse{}, nil
}
@ -458,6 +470,11 @@ func (cs *ControllerServer) CreateSnapshot(ctx context.Context, req *csi.CreateS
if _, ok := err.(ErrImageNotFound); ok {
return nil, status.Errorf(codes.NotFound, "source Volume ID %s not found", req.GetSourceVolumeId())
}
if _, ok := err.(util.ErrPoolNotFound); ok {
klog.Errorf(util.Log(ctx, "failed to get backend volume for %s: %v"), req.GetSourceVolumeId(), err)
return nil, status.Errorf(codes.Internal, err.Error())
}
return nil, status.Errorf(codes.Internal, err.Error())
}
@ -625,6 +642,13 @@ func (cs *ControllerServer) DeleteSnapshot(ctx context.Context, req *csi.DeleteS
rbdSnap := &rbdSnapshot{}
if err = genSnapFromSnapID(ctx, rbdSnap, snapshotID, cr); err != nil {
// if error is ErrPoolNotFound, the pool is already deleted we dont
// need to worry about deleting snapshot or omap data, return success
if _, ok := err.(util.ErrPoolNotFound); ok {
klog.Warningf(util.Log(ctx, "failed to get backend snapshot for %s: %v"), snapshotID, err)
return &csi.DeleteSnapshotResponse{}, nil
}
// if error is ErrKeyNotFound, then a previous attempt at deletion was complete
// or partially complete (snap and snapOMap are garbage collected already), hence return
// success as deletion is complete
@ -715,6 +739,12 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
if _, ok := err.(ErrImageNotFound); ok {
return nil, status.Errorf(codes.NotFound, "volume ID %s not found", volID)
}
if _, ok := err.(util.ErrPoolNotFound); ok {
klog.Errorf(util.Log(ctx, "failed to get backend volume for %s: %v"), volID, err)
return nil, status.Errorf(codes.InvalidArgument, err.Error())
}
return nil, status.Errorf(codes.Internal, err.Error())
}