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rbd: consider ErrImageNotFound during DeleteSnapshot

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added a check to consider ErrImageNotFound error
during DeleteSnapshot operation, if the error
is ErrImageNotFound we need to ensure that image
is removed from the trash and also the rados
OMAP data is removed.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2021-12-15 12:00:41 +05:30 committed by mergify[bot]
parent da60d221df
commit f7f662678a
1 changed files with 50 additions and 20 deletions
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70
internal/rbd/controllerserver.go
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@ -1327,6 +1327,17 @@ func (cs *ControllerServer) DeleteSnapshot(
return &csi.DeleteSnapshotResponse{}, nil
}
// if the error is ErrImageNotFound, We need to cleanup the image from
// trash and remove the metadata in OMAP.
if errors.Is(err, ErrImageNotFound) {
err = cleanUpImageAndSnapReservation(ctx, rbdSnap, cr)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return &csi.DeleteSnapshotResponse{}, nil
}
return nil, status.Error(codes.Internal, err.Error())
}
@ -1350,28 +1361,14 @@ func (cs *ControllerServer) DeleteSnapshot(
}
defer rbdVol.Destroy()
err = rbdVol.getImageInfo()
rbdVol.ImageID = rbdSnap.ImageID
// update parent name to delete the snapshot
rbdSnap.RbdImageName = rbdVol.RbdImageName
err = cleanUpSnapshot(ctx, rbdVol, rbdSnap, rbdVol, cr)
if err != nil {
if errors.Is(err, ErrImageNotFound) {
err = rbdVol.ensureImageCleanup(ctx)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
} else {
log.ErrorLog(ctx, "failed to delete rbd image: %s/%s with error: %v", rbdVol.Pool, rbdVol.VolName, err)
log.ErrorLog(ctx, "failed to delete image: %v", err)
return nil, status.Error(codes.Internal, err.Error())
}
} else {
rbdVol.ImageID = rbdSnap.ImageID
// update parent name to delete the snapshot
rbdSnap.RbdImageName = rbdVol.RbdImageName
err = cleanUpSnapshot(ctx, rbdVol, rbdSnap, rbdVol, cr)
if err != nil {
log.ErrorLog(ctx, "failed to delete image: %v", err)
return nil, status.Error(codes.Internal, err.Error())
}
return nil, status.Error(codes.Internal, err.Error())
}
err = undoSnapReservation(ctx, rbdSnap, cr)
if err != nil {
@ -1384,6 +1381,39 @@ func (cs *ControllerServer) DeleteSnapshot(
return &csi.DeleteSnapshotResponse{}, nil
}
// cleanUpImageAndSnapReservation cleans up the image from the trash and
// snapshot reservation in rados OMAP.
func cleanUpImageAndSnapReservation(ctx context.Context, rbdSnap *rbdSnapshot, cr *util.Credentials) error {
rbdVol := generateVolFromSnap(rbdSnap)
err := rbdVol.Connect(cr)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
defer rbdVol.Destroy()
err = rbdVol.openIoctx()
if err != nil {
return status.Error(codes.Internal, err.Error())
}
// cleanup the image from trash if the error is image not found.
err = rbdVol.ensureImageCleanup(ctx)
if err != nil {
log.ErrorLog(ctx, "failed to delete rbd image: %q with error: %v", rbdVol.Pool, rbdVol.VolName, err)
return status.Error(codes.Internal, err.Error())
}
err = undoSnapReservation(ctx, rbdSnap, cr)
if err != nil {
log.ErrorLog(ctx, "failed to remove reservation for snapname (%s) with backing snap %q",
rbdSnap.RequestName, rbdSnap, err)
return status.Error(codes.Internal, err.Error())
}
return nil
}
// ControllerExpandVolume expand RBD Volumes on demand based on resizer request.
func (cs *ControllerServer) ControllerExpandVolume(
ctx context.Context,