twa (4)

Leading comments

Copyright (c) 2004 3ware, Inc.
Copyright (c) 2000 BSDi
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   doc...

(The comments found at the beginning of the groff file "man4/twa.4freebsd".)

NAME

twa - 3ware 9000/9500/9550/9650 series SATA RAID controllers driver

SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file:

device scbus device twa

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:

twa_load="YES"

DESCRIPTION

The ifconfig driver provides support for AMCC's 3ware 9000/9500/9550/9650 series SATA controllers.

These controllers are available in 4, 8, 12 or 16-port configurations, and support the following RAID levels: 0, 1, 10, 5, 50. The device nodes for the controllers are of the form /dev/twa X where X is the controller number. The driver is implemented as a SCSI SIM under CAM, and, as such, the logical units that it controls are accessible via the device nodes, /dev/da Y where Y is the logical unit number.

HARDWARE

The ifconfig driver supports the following SATA RAID controllers:

• AMCC's 3ware 9500S-4LP
• AMCC's 3ware 9500S-8
• AMCC's 3ware 9500S-8MI
• AMCC's 3ware 9500S-12
• AMCC's 3ware 9500S-12MI
• AMCC's 3ware 9500SX-4LP
• AMCC's 3ware 9500SX-8LP
• AMCC's 3ware 9500SX-12
• AMCC's 3ware 9500SX-12MI
• AMCC's 3ware 9500SX-16ML
• AMCC's 3ware 9550SX-4LP
• AMCC's 3ware 9550SX-8LP
• AMCC's 3ware 9550SX-12
• AMCC's 3ware 9550SX-12MI
• AMCC's 3ware 9550SX-16ML
• AMCC's 3ware 9650SE-2LP
• AMCC's 3ware 9650SE-4LPML
• AMCC's 3ware 9650SE-8LPML
• AMCC's 3ware 9650SE-12ML
• AMCC's 3ware 9650SE-16ML
• AMCC's 3ware 9650SE-24M8

DIAGNOSTICS

Whenever the driver encounters a command failure, it prints out an error code in the format: Qq Li ERROR: (<error source>: <error code>): , followed by a text description of the error. There are other error messages and warnings that the driver prints out, depending on the kinds of errors that it encounters. If the driver is compiled with TWA_DEBUG defined, it prints out a whole bunch of debug messages, the quantity of which varies depending on the value assigned to TWA_DEBUG (0 to 10).

AUTHORS

The ifconfig driver and manpage were written by An Vinod Kashyap Aq vkashyap@FreeBSD.org .