As far as I know SPC-4 does not allow unaligned unmap requests to
fail. The only phrase I found in SPC-4 about unaligned unmap
requests is the following: "An unmap request with a starting LBA
that is not optimal may result in unmap operations on fewer LBAs
than requested." Hence check that unaligned unmap requests succeed.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
From the SPC-4 paragraph about WRITE SAME(10): "The WRITE SAME (10)
command requests that the device server transfer a single logical
block from the Data-Out Buffer [ ... ]". Hence always pass a data
buffer when sending a WRITE SAME(10) command.
Set the NDOB bit in the WRITE SAME(16) command if no data out buffer
is present.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
