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.conf(5):
DESCRIPTION¶
The
twa
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/twaX,
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/daY,
where
Y is the logical unit number.
HARDWARE¶
The
twa
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: “
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
twa
driver and manpage were written by
Vinod Kashyap
⟨vkashyap@FreeBSD.org⟩.