ioctl, or if the target is an sg character device we use
\fBread\fR\|(2) and \fBwrite\fR\|(2) for asynchronous
I/O. Requires \fBfilename\fR option to specify either block or
-character devices.
+character devices. The sg engine includes engine specific options.
.TP
.B null
Doesn't transfer any data, just pretends to. This is mainly used to
on the client site it will be used in the rdma_resolve_add()
function. This can be useful when multiple paths exist between the
client and the server or in certain loopback configurations.
+.TP
+.BI (sg)readfua \fR=\fPbool
+With readfua option set to 1, read operations include the force
+unit access (fua) flag. Default: 0.
+.TP
+.BI (sg)writefua \fR=\fPbool
+With writefua option set to 1, write operations include the force
+unit access (fua) flag. Default: 0.
.SS "I/O depth"
.TP
.BI iodepth \fR=\fPint