Created attachment 1500058 [details]
evm.log

Description of problem:

If the 'Storage Allocated Rate' field is included in a vm chargeback report, then report generation fails, with a traceback in evm.log (full traceback attached to BZ):

[----] W, [2018-11-01T11:25:45.466379 #11829:93af80]  WARN -- : <AuditFailure> MIQ(Async.rescue in _async_generate_table) userid: [admin] - invalid value for Float(): "1.0/1.0"
[----] E, [2018-11-01T11:25:45.469593 #11829:93af80] ERROR -- : MIQ(MiqQueue#deliver) Message id: [82718], Error: [invalid value for Float(): "1.0/1.0"]
[----] E, [2018-11-01T11:25:45.469757 #11829:93af80] ERROR -- : [ArgumentError]: invalid value for Float(): "1.0/1.0"  Method:[block (2 levels) in <class:LogProxy>]
[----] E, [2018-11-01T11:25:45.469900 #11829:93af80] ERROR -- : /opt/rh/cfme-gemset/bundler/gems/cfme-ui-classic-75b755f67a94/app/helpers/number_helper.rb:53:in `Float'
/opt/rh/cfme-gemset/bundler/gems/cfme-ui-classic-75b755f67a94/app/helpers/number_helper.rb:53:in `handling_negatives'
/opt/rh/cfme-gemset/bundler/gems/cfme-ui-classic-75b755f67a94/app/helpers/number_helper.rb:4:in `number_to_human_size'
/var/www/miq/vmdb/app/models/miq_report/formatting.rb:122:in `format_bytes_to_human_size'
/var/www/miq/vmdb/app/models/miq_report/formatting.rb:90:in `apply_format_function'
/var/www/miq/vmdb/app/models/miq_report/formatting.rb:75:in `format'


Version-Release number of selected component (if applicable):

5.10.0.21

How reproducible:

100%

Steps to Reproduce:
1.) Create vm chargeback report with the 'Storage Allocated Rate' field included.
2.) Run the report.


Actual results:

Report generation fails.


Expected results:


Report generation succeeds, correct rate shown in Storage Allocated Rate column.


Additional info:

No error occurs for the other rate-related fields (added in 5.10).