verified for workloads that write data.
See also verify_pattern.
+ pattern Verify a strict pattern. Normally fio includes
+ a header with some basic information and
+ checksumming, but if this option is set, only
+ the specific pattern set with 'verify_pattern'
+ is verified.
+
null Only pretend to verify. Useful for testing
internals with ioengine=null, not for much
else.