NAME

mpt_sas - SAS-2/3 host bus adapter driver

SYNOPSIS

scsi@unit-address

DESCRIPTION

The mpt_sas host bus adapter driver is a nexus driver that supports Broadcom (formerly LSI and Avago) SAS chipsets including the SAS200x/2x08/2x16 and SAS300x/3x08/3x16/3x24 series of chips. These chips support SAS/SATA interfaces, including tagged and untagged queuing, SATA 3G/SAS 3G/SAS 6G/SAS 12G.

Configuration

The mpt_sas driver is configured by defining properties in mpt_sas.conf. These properties override the global SCSI settings. The mpt_sas driver supports one modifiable property:

mpxio-disable

Solaris I/O multipathing is enabled or disabled on SAS devices with the mpxio-disable property. Specifying mpxio-disable="no" activates I/O multipathing, while mpxio-disable="yes" disables I/O multipathing.

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.

The following example shows how to disable multipathing on port 0 whose parent is /pci@0,0/pci8086,2940@1c/pci1000,72@0:

name="mpt_sas"    parent="/pci@0,0/pci8086,2940@1c/pci1000,72@0"
mpxio-disable="yes";

EXAMPLES

Example 1 Using the mpt_sas Configuration File to Disable MPXIO

Create a file called /kernel/drv/mpt_sas.conf and add the following line:

name="mpt_sas"    parent="/pci@0,0/pci8086,2940@1c/pci1000,72@0"
mpxio-disable="yes";

FILES

/kernel/drv/mpt_sas

32-bit ELF kernel module

/kernel/drv/sparcv9/mpt_sas

64-bit SPARC ELF kernel module

/kernel/drv/amd64/mpt_sas

64-bit x86 ELF kernel module

/kernel/drv/mpt_sas.conf

Optional configuration file

ATTRIBUTES

See attributes(7) for a description of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Architecture	SPARC, x86