rbd: add warning messages for missing arguments
authorAlex Elder <elder@dreamhost.com>
Thu, 1 Nov 2012 15:17:15 +0000 (10:17 -0500)
committerAlex Elder <elder@inktank.com>
Thu, 17 Jan 2013 20:10:21 +0000 (14:10 -0600)
Tell the user (via dmesg) what was wrong with the arguments provided
via /sys/bus/rbd/add.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>

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