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NAME    [Toc]    [Back]

     atacontrol -- ATA device driver control program

SYNOPSIS    [Toc]    [Back]

     atacontrol <command> args

     atacontrol attach channel
     atacontrol detach channel
     atacontrol reinit channel
     atacontrol create type [interleave] disk0 ... diskN
     atacontrol delete raid
     atacontrol addspare raid disk
     atacontrol rebuild raid
     atacontrol status raid
     atacontrol mode channel [mastermode slavemode]
     atacontrol info channel
     atacontrol cap channel device
     atacontrol enclosure channel device
     atacontrol list

DESCRIPTION    [Toc]    [Back]

     The atacontrol utility is a control program that provides the user access
     and control to the FreeBSD ata(4) subsystem.

     The atacontrol 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 number of the ATA channel 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 or SPAN (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 ATA 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

     delete   Delete a RAID array on a RAID capable ATA controller.

	      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 two mode arguments, the current transfer modes of
	      both devices are printed.  If the mode arguments are given, the
	      ATA driver is asked to change the transfer modes to those given.
	      The ATA driver will reject modes that are not supported by the
	      hardware.  Modes are given like ``PIO3'', ``udma2'',
	      ``udma100'', case does not matter.  If one of the devices mode
	      should not be changed, use a nonexisting mode as argument (i.e.
	      ``XXX''), and the mode will remain unchanged.

	      Currently supported modes are: BIOSDMA, PIO0 (alias BIOSPIO),
	      PIO1, PIO2, PIO3, PIO4, WDMA2, UDMA2 (alias UDMA33), UDMA4
	      (alias UDMA66), UDMA5 (alias UDMA100) and UDMA6 (alias UDMA133).

     info     Show info about the attached devices on the channel.  The device
	      name and manufacture/version strings are shown.

     cap      Show detailed info about the device on channel device where
	      device is 0 for master and 1 for slave.

	      Show detailed info about the enclosure on channel device where
	      device is 0 for master and 1 for slave.  Fan RPM speed, enclosure
 temperature, 5V and 12V levels are shown.

     list     Show info about all attached devices on all active controllers.

EXAMPLES    [Toc]    [Back]

     To see the devices' current access modes, use the command line:

	   atacontrol mode 0

     which results in the modes of the devices being displayed as a string
     like this:

	   Master = WDMA2
	   Slave  = PIO4

     This means that ata0-master is in DMA mode, ata0-slave is in PIO mode,
     and so forth.  You can set the mode with atacontrol and a string like the
     above, for example:

	   atacontrol mode 0 PIO4 PIO4

     The new modes are set as soon as the atacontrol command returns.

SEE ALSO    [Toc]    [Back]


HISTORY    [Toc]    [Back]

     The atacontrol utility first appeared in FreeBSD 4.6.

AUTHORS    [Toc]    [Back]

     The atacontrol utility was written by Soren Schmidt <sos@FreeBSD.org>.

     This manual page was written by Soren Schmidt <sos@FreeBSD.org>.

FreeBSD 5.2.1			 May 17, 2001			 FreeBSD 5.2.1
[ Back ]
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