There was a small bug in the check_equallogic Nagios plugin. When someone used the "volume" check, the percentage of the usage was not correctly calculated.
check_equallogic: line 845: / 1024: syntax error: operand expected (error token is "/ 1024")
Todays released version 20150203 fixes this bug. When I committed to the github repository, I saw that I already committed the exact same bugfix already in August 2014 - but forgot to merge back to master. Arrrrrrrrr!
Thanks to Tim Sutton and to Andreas Thul for the bug reports.