tree ec44e04a0219e9d7b7c99ad6e87b546289eceea5
parent 6d80b130d516deef51666e210fde674c947b8b5c
author Alex Elder <elder@inktank.com> 1367844030 -0500
committer Alex Elder <elder@inktank.com> 1368017292 -0500

rbd: always set read-only flag in rbd_add()

Hold off setting the read-only flag in rbd_add() for an image being
mapped until we have successfully probed the image.  At that point
we know whether it's a snapshot mapping or not, so we can set the
read-only flag in that one place rather than doing so (for
snapshots) in rbd_dev_mapping_set().  To do this, pass a flag to the
image probe routine indicating whether we want a read-only mapping.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>