sys/cam/scsi/scsi_da.c: 	- Only attempt the closing synchronize cache on a disk 	  if it is still there. 	- When a device is lost, report the number of outstanding 	  I/Os as they are drained. 	- When a device is lost, return any unprocessed bios with 	  ENXIO instead of EIO. 	- Filter asynchronous events, but always allow cam_periph_async() 	  to see them too.
sys/cam/scsi/scsi_da.c:
	- Only attempt the closing synchronize cache on a disk
	  if it is still there.
	- When a device is lost, report the number of outstanding
	  I/Os as they are drained.
	- When a device is lost, return any unprocessed bios with
	  ENXIO instead of EIO.
	- Filter asynchronous events, but always allow cam_periph_async()
	  to see them too.

Sponsored by:	Spectra Logic Corporation

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