The rockstor log is using a different timestamp to the system time/date. In my case I am in Melbourne (+10GMT).
rockstor.log
[30/Jun/2015 21:52:52]
System time
Wed 1 Jul 2015 12:52:31 AEST
It would be very useful to have everything in sync using the same time/date (timezone), trying to cross reference events from the system logs to the rockstor logs is not easy or fun.