Commits
Alex Elder committed 5b2ab72d367
rbd: support reading parent page data
Currently, rbd_img_parent_read() assumes the incoming object request
contains bio data. But if a layered image is part of a multi-layer
stack of images it will result in read requests of page data to parent
images.
Fortunately, it's not hard to add support for page data.
This resolves:
http://tracker.ceph.com/issues/4939
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>