Alex Elder 86b00e0da6
rbd: get parent spec for version 2 images ...
Add support for getting the the information identifying the parent
image for rbd images that have them. The child image holds a
reference to its parent image specification structure. Create a new
entry "parent" in /sys/bus/rbd/image/N/ to report the identifying
information for the parent image, if any.
Signed-off-by: Alex Elder <elder@inktank.com >
Reviewed-by: Josh Durgin <josh.durgin@inktank.com >
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86b00e0da6
