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twa (4)
>> twa (4) ( FreeBSD man: Специальные файлы /dev/* )
BSD mandoc
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 scbusdevice twa
Alternatively, to load the driver as a
module at boot time, place the following line in
loader.conf5:
twa_load="YES"
DESCRIPTION
The
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
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
driver and manpage were written by
An Vinod Kashyap Aq vkashyap@FreeBSD.org .
