SourceOne indexing stopped

Hi,

few days back due to NTP server misconfiguration, some of our server picked incorrect time .

other services got restored (like Exchange and web servers) once NTP issue resolved, but Source Once stopped indexing the new messages.

the message volumes are being recorded normal (archiving is OK) but after that indexing stopped, like for current month only 4 index are created whereas normal number is 25 to 30. and now the "unpack_area" drive is flooded and journaling is also disturbed due to space shortage.

there are 4 workers on SourceOne 7.2.7 loaded on windows 2012.

any help/tip to restore indexing function will be highly appreciated.