Re: Exposing FUA as alternative to DIOCCACHESYNC for WAPBL

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

> When SCSI tagged queueing is used properly, it is not necessary to set WCE
> to get good write performance
I will be eager to test this in Real Life once NetBSD ``uses tagged queueing 
properly''.


> and doing so is in fact harmful, since it allows the drive to return 
> ORDERED commands as complete before any of the data for those or prior 
> commands have actually been committed to stable storage.
Which exactly violates the ordering assumptions in which way?