Sage Weil d63b77f4c5 libceph: check for invalid mapping
If we encounter an invalid (e.g., zeroed) mapping, return an error
and avoid a divide by zero.

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
2012-10-01 17:20:00 -05:00
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