Ticket #250 (closed enhancement: fixed)
implement -g/-s wcache and lookahead for the SCSI drvies
|Reported by:||samm2||Owned by:||somebody|
Description (last modified by samm2) (diff)
Most of SCSI/SAS drives are supporting cache control, so it is possible to implement this functionality. This should help a lot for SAS drives behind the RAID - some of them turning off write cache if drive is not "native".
Tested on scsi, megaraid and cciss device types on Linux. It was found that cciss silently filtering MODE SELECT command, so actual values are not changed. On megaraid and direct connection everything works as expected.