rbd: be more informative on -ENOENT failures

pr_info what exactly was the culprit: missing pool, image or snap.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2015-03-05 10:47:22 +03:00
commit 1fe480235a