'\" te
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.\" Copyright 2014, Nexenta Systems, Inc. All Rights Reserved
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.TH MPT_SAS 7D "Apr 24, 2014"
.SH NAME
mpt_sas \- SAS-2/3 host bus adapter driver
.SH SYNOPSIS
.sp
.in +2
.nf
scsi@unit-address
.fi
.in -2

.SH DESCRIPTION
.sp
.LP
The \fBmpt_sas\fR host bus adapter driver is a nexus driver that supports the
LSI SAS200x/2x08 and SAS300x/3x08 series of chips. These chips support SAS/SATA
interfaces, including tagged and untagged queuing, SATA 3G/SAS 3G/SAS 6G/SAS
12G.
.SS "Configuration"
.sp
.LP
The \fBmpt_sas\fR driver is configured by defining properties in
\fBmpt_sas.conf\fR. These properties override the global SCSI settings. The
\fBmpt_sas\fR driver supports one modifiable property:
.sp
.ne 2
.na
\fB\fBmpxio-disable\fR\fR
.ad
.sp .6
.RS 4n
Solaris I/O multipathing is enabled or disabled on SAS devices with the
\fBmpxio-disable\fR property. Specifying \fBmpxio-disable="no"\fR activates I/O
multipathing, while \fBmpxio-disable="yes"\fR disables I/O multipathing.
.sp
Solaris I/O multipathing can be enabled or disabled on a per port basis. Per
port settings override the global setting for the specified ports.
.sp
The following example shows how to disable multipathing on port 0 whose parent
is \fB/pci@0,0/pci8086,2940@1c/pci1000,72@0\fR:
.sp
.in +2
.nf
name="mpt_sas"    parent="/pci@0,0/pci8086,2940@1c/pci1000,72@0"
mpxio-disable="yes";
.fi
.in -2

.RE

.SH EXAMPLES
.LP
\fBExample 1 \fRUsing the \fBmpt_sas\fR Configuration File to Disable MPXIO
.sp
.LP
Create a file called \fB/kernel/drv/mpt_sas.conf\fR and add the following line:

.sp
.in +2
.nf
name="mpt_sas"    parent="/pci@0,0/pci8086,2940@1c/pci1000,72@0"
mpxio-disable="yes";
.fi
.in -2

.SH FILES
.sp
.ne 2
.na
\fB\fB/kernel/drv/mpt_sas\fR\fR
.ad
.sp .6
.RS 4n
32-bit ELF kernel module
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/sparcv9/mpt_sas\fR\fR
.ad
.sp .6
.RS 4n
64-bit SPARC ELF kernel module
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/amd64/mpt_sas\fR\fR
.ad
.sp .6
.RS 4n
64-bit x86 ELF kernel module
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/mpt_sas.conf\fR\fR
.ad
.sp .6
.RS 4n
Optional configuration file
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for a description of the following attributes:
.sp

.sp
.TS
box;
l | l
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Architecture	SPARC, x86
.TE

.SH SEE ALSO
.sp
.LP
\fBprtconf\fR(1M), \fBdriver.conf\fR(4), \fBpci\fR(4), \fBattributes\fR(5),
\fBscsi_abort\fR(9F), \fBscsi_device\fR(9S), \fBscsi_extended_sense\fR(9S),
\fBscsi_inquiry\fR(9S), \fBscsi_hba_attach_setup\fR(9F),
\fBscsi_ifgetcap\fR(9F), \fBscsi_ifsetcap\fR(9F), \fBscsi_pkt\fR(9S),
\fBscsi_reset\fR(9F), \fBscsi_sync_pkt\fR(9F), \fBscsi_transport\fR(9F),