Feature #2562
Updated by Sage Weil almost 12 years ago
- when we open an image, open the parent image too.
- guard writes beyond parent size with object existence check
- on failure, attempt copyup and retry
test plan:
- create child, read child, compare to parent
- create child, modify child, compare to parent
- modify librbd_fsx to periodically create a child and shift new work to it