On Wed, 2011-10-05 at 22:29 +0530, Amit Sahrawat wrote: > Can anyone suggest what is the way ahead to detect the presence of > Write Cache in these kind of USB HDD and proceed accordingly by > assigning proper flushing method. > Please share some opinions on this. We're a bit out of ideas. We've already established that we do exactly what windows does in this situation, which is usually what we aim for. Realistically, if the disks lie how do we know when not to believe them? The best we could probably offer is an interface to turn on the WCE bit in software (technically, you can do this today in /scsi/class/scsi_disk/<disk>/cache_type, it's just that it will try to commit the change as a MODE_SELECT which will presumably fail). James -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
