rbd mapcommand is failing when exclusive-lock, object-map, fast-diff and deep-flatten features are enabled in
- KRBD :
rbd mapcommand is failing, we should log correct error message either in system logs or in standard error output.
$rbd map rbd/test rbd: sysfs write failed rbd: map failed: (6) No such device or address
- Red Hat Enterprise Linux 7.2
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