8d8b579597
example on how to obtain information on devices on an ata channel. PR: 84676 Submitted by: Kevin Oberman <oberman@es.net> Jeremie Le Hen <jeremie@le-hen.org> MFC after: 3 days
242 lines
5.7 KiB
Groff
242 lines
5.7 KiB
Groff
.\"
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.\" Copyright (c) 2000,2001,2002 Søren Schmidt <sos@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd August 16, 2005
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.Dt ATACONTROL 8
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.Os
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.Sh NAME
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.Nm atacontrol
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.Nd ATA device driver control program
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.Sh SYNOPSIS
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.Nm
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.Aq Ar command
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.Ar args
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.Pp
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.Nm
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.Ic attach
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.Ar channel
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.Nm
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.Ic detach
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.Ar channel
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.Nm
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.Ic reinit
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.Ar channel
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.Nm
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.Ic create
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.Ar type Oo Ar interleave Oc Ar disk0 ... diskN
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.Nm
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.Ic delete
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.Ar raid
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.Nm
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.Ic addspare
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.Ar raid disk
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.Nm
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.Ic rebuild
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.Ar raid
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.Nm
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.Ic status
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.Ar raid
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.Nm
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.Ic mode
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.Ar device
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.Nm
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.Ic info
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.Ar channel
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.Nm
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.Ic cap
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.Ar device
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.Nm
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.Ic list
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.Sh DESCRIPTION
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The
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.Nm
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utility is a control program that provides the user access and control to the
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.Fx
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.Xr ata 4
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subsystem.
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.Pp
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The
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.Nm
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utility
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can cause severe system crashes and loss of data if used improperly.
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Please
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exercise caution when using this command!
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.Pp
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The
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.Ar channel
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argument is the ATA channel device (e.g., ata0) on which to operate.
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The following commands are supported:
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.Bl -tag -width "rebuild"
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.It Ic attach
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Attach an ATA
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.Ar channel .
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Devices on the channel are probed and attached as
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is done on boot.
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.It Ic detach
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Detach an ATA
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.Ar channel .
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Devices on the channel are removed from the kernel,
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and all outstanding transfers etc.\& are returned back to the system marked
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as failed.
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.It Ic reinit
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Reinitialize an ATA
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.Ar channel .
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Both devices on the channel are reset and
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initialized to the parameters the ATA driver has stored internally.
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Devices that have gone bad and no longer respond to the probe, or devices
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that have physically been removed, are removed from the kernel.
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Likewise are devices that show up during a reset, probed and attached.
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.It Ic create
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Create a
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.Ar type
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ATA RAID.
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The type can be
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.Cm RAID0
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(stripe),
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.Cm RAID1
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(mirror),
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.Cm RAID0+1 ,
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.Cm SPAN
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or
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.Cm JBOD .
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In case the RAID has a
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.Cm RAID0
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component,
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the
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.Ar interleave
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must be specified in number of sectors.
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The RAID will be created
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of the individual disks named
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.Bk -words
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.Ar disk0 ... diskN .
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.Ek
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.Pp
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Although the ATA driver allows for creating an ATA RAID on disks with any
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controller, there are restrictions.
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It is only possible to boot on
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an array if it is either located on a
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.Dq real
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ATA RAID controller like
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the Promise or Highpoint controllers, or if the RAID declared is of
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.Cm RAID1
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or
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.Cm SPAN
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type; in case of a
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.Cm SPAN ,
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the partition to boot must
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reside on the first disk in the SPAN.
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.It Ic delete
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Delete a RAID array on a RAID capable ATA controller.
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.It Ic addspare
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Add a spare disk to an existing RAID.
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.It Ic rebuild
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Rebuild a RAID1 array on a RAID capable ATA controller.
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.It Ic status
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Get the status of an ATA RAID.
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.It Ic mode
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Without the mode argument, the current transfer modes of the
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device are printed.
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If the mode argument is given, the ATA driver
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is asked to change the transfer mode to the one given.
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The ATA driver
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will reject modes that are not supported by the hardware.
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Modes are given like
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.Dq Li PIO3 ,
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.Dq Li udma2 ,
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.Dq Li udma100 ,
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case does not matter.
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.Pp
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Currently supported modes are:
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.Cm PIO0 , PIO1 , PIO2 , PIO3 , PIO4 ,
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.Cm WDMA2 ,
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.Cm UDMA2
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(alias
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.Cm UDMA33 ) ,
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.Cm UDMA4
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(alias
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.Cm UDMA66 ) ,
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.Cm UDMA5
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(alias
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.Cm UDMA100 )
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and
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.Cm UDMA6
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(alias
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.Cm UDMA133 ) .
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The device name and manufacture/version strings are shown.
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.It Ic cap
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Show detailed info about the device on
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.Ar device .
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.It Ic info
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Show info about the attached devices on the
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.Ar channel .
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.It Ic list
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Show info about all attached devices on all active controllers.
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.El
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.Sh EXAMPLES
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To get information on devices attached to a channel,
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use the command line:
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.Pp
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.Dl "atacontrol info ata0"
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.Pp
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To see the devices' current access modes, use the command line:
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.Pp
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.Dl "atacontrol mode ad0"
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.Pp
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which results in the modes of the devices being displayed as a string
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like this:
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.Pp
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.Dl "current mode = UDMA100"
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.Pp
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You can set the mode with
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.Nm
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and a string like the above,
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for example:
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.Pp
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.Dl "atacontrol mode ad0 PIO4"
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.Pp
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The new modes are set as soon as the
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.Nm
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command returns.
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.Sh SEE ALSO
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.Xr ata 4
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Fx 4.6 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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utility was written by
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.An S\(/oren Schmidt
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.Aq sos@FreeBSD.org .
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.Pp
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This manual page was written by
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.An S\(/oren Schmidt
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.Aq sos@FreeBSD.org .
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