natacontrol —
NATA device driver control
program
natacontrol |
⟨command⟩
args |
natacontrol |
attach channel |
natacontrol |
detach channel |
natacontrol |
reinit channel |
natacontrol |
create type
[interleave] disk0 ...
diskN |
natacontrol |
addspare raid disk |
natacontrol |
feature device acoustic
soundsupplevel |
natacontrol |
feature device apm
apmlevel |
natacontrol |
spindown device
[seconds] |
The natacontrol utility is a control program that
provides the user access and control to the DragonFly
nata(4) subsystem.
The natacontrol utility can cause severe
system crashes and loss of data if used improperly. Please exercise caution
when using this command!
The channel argument is the ATA channel
device (e.g., ata0) on which to operate. The following commands are
supported:
attach- Attach an ATA channel. Devices on the channel are
probed and attached as is done on boot.
detach- Detach an ATA channel. Devices on the channel are
removed from the kernel, and all outstanding transfers etc. are returned
back to the system marked as failed.
reinit- Reinitialize an ATA channel. Both devices on the
channel are reset and initialized to the parameters the ATA driver has
stored internally. Devices that have gone bad and no longer respond to the
probe, or devices that have physically been removed, are removed from the
kernel. Likewise are devices that show up during a reset, probed and
attached.
create- Create a type ATA RAID. The type can be
RAID0 (stripe), RAID1
(mirror), RAID0+1, SPAN or
JBOD. In case the RAID has a
RAID0 component, the
interleave must be specified in number of sectors.
The RAID will be created of the individual disks named
disk0 ... diskN.
Although the
nata(4) driver allows for creating an ATA RAID on disks with any
controller, there are restrictions. It is only possible to boot on an
array if it is either located on a “real” ATA RAID
controller like the Promise or Highpoint controllers, or if the RAID
declared is of RAID1 or
SPAN type; in case of a
SPAN, the partition to boot must reside on the
first disk in the SPAN.
delete- Delete a RAID array on a RAID capable ATA controller.
addspare- Add a spare disk to an existing RAID.
rebuild- Rebuild a RAID1 array on a RAID capable ATA controller.
status- Get the status of an ATA RAID.
mode- Without the mode argument, the current transfer modes of the device are
printed. If the mode argument is given, the
nata(4) driver is asked to change the transfer mode to the one
given. The nata(4) driver will reject modes that are not supported by
the hardware. Modes are given like
“
PIO3”,
“udma2”,
“udma100”, case does not matter.
Currently supported modes are: PIO0,
PIO1, PIO2,
PIO3, PIO4,
WDMA2, UDMA2 (alias
UDMA33), UDMA4 (alias
UDMA66), UDMA5 (alias
UDMA100) and UDMA6
(alias UDMA133). The device name and
manufacture/version strings are shown.
cap- Show detailed info about the device on device.
feature- Set disk drive features. Currently, acoustic and
apm features are supported.
- acoustic soundsupplevel
- Controls the disk drive Acoustic Management level. The
soundsupplevel may be set to
off which will turn off acoustic management,
maxperf to optimize for maximum performance,
maxquiet to optimize for maximum quiet, or a
numeric level from 0 to 124. The higher the numeric level, the higher
the theoretical sound level emitted from the drive. Note that few
devices support this command and even fewer will allow the range of
levels supported.
- apm apmlevel
- Sets the disk drive Advanced Power Management (APM) level. This
command is generally used on laptop (notebook) hard disks to control
the power level consumed by the drive (at the expense of performance).
The apmlevel may be set to one of:
off (turn off APM),
maxperf or minpower
(optimize for maximum performance or minimum power, respectively),
or a numeric level which can be 0 to 127 inclusive indicating an
increasing level of performance over power savings. The numeric
levels may be prefixed by s which will allow
the drive to include suspension as part of the power savings. Note
that not all hard drives will support the
off command, and that the number of
incremental power savings levels do not typically have as wide of a
range as this command will support.
spindown- Set or report timeout after which the device will be
spun down. To arm the timeout the device needs at least one more request
after setting the timeout. To disable spindown, set the timeout to zero.
No further actions are needed in this case.
info- Show info about the attached devices on the
channel.
list- Show info about all attached devices on all active controllers.
To get information on devices attached to a channel, use the
command line:
natacontrol info ata0
To see the devices' current access modes, use the command
line:
natacontrol mode ad0
which results in the modes of the devices being displayed as a
string like this:
current mode = UDMA100
You can set the mode with natacontrol and
a string like the above, for example:
natacontrol mode ad0
PIO4
The new modes are set as soon as the
natacontrol command returns.
The natacontrol utility first appeared in
FreeBSD 4.6 and was imported into
DragonFly 1.7.