Sumanesh, > The high-end controllers might expose a SCSI interface, but can have > all kind of devices (NVMe/SCSI/SATA) behind it, and has its own > capability to queue IO and feed to devices as needed. Those devices > should not be penalized with the overhead of the device_busy counter, > just because they chose to expose themselves has SCSI devices (for > historical and backward compatibility reasons). Please read what I proposed. megaraid VDs don't report QUEUE_FULL so you would not trigger the device_busy counter. -- Martin K. Petersen Oracle Linux Engineering
