I have a SCSI controller (HP Smart Array 642), using cciss driver on Linux, which is connected to several SCSI disks. I am trying to optimize the communication between these devices and came to the place, that I should check how full is the cache of each disk.
Is it possible to get this value from the disk? Or maybe it is possible to get this value from the controller?
p.s. Want to notice that because the disks are behind the controller I can't use hdparm, for example.