1 .\" Copyright (c) 2013 Edward Tomasz Napierala
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 To compile this driver into the kernel,
34 place the following line in your
35 kernel configuration file:
36 .Bd -ragged -offset indent
41 Alternatively, to load the driver as a
42 module at boot time, place the following line in
44 .Bd -literal -offset indent
50 subsystem provides SCSI disk and processor emulation.
51 It supports features such as:
55 Disk and processor device emulation
59 SCSI task attribute support (ordered, head of queue, simple tags)
61 SCSI implicit command ordering support
63 Full task management support (abort, LUN reset, target reset, etc.)
65 Support for multiple ports
67 Support for multiple simultaneous initiators
69 Support for multiple simultaneous backing stores
71 Support for VMWare VAAI: COMPARE AND WRITE, XCOPY, WRITE SAME,
74 Support for Microsoft ODX: POPULATE TOKEN/WRITE USING TOKEN,
75 WRITE SAME, and UNMAP commands
77 Persistent reservation support
79 Mode sense/select support
81 Error injection support
83 All I/O handled in-kernel, no userland context switch overhead
86 It also serves as a kernel component of the native iSCSI target.
94 subsystem first appeared in
99 subsystem was written by
100 .An Kenneth Merry Aq ken@FreeBSD.org .