235 lines
6.7 KiB
Groff
235 lines
6.7 KiB
Groff
.\" $NetBSD: scsictl.8,v 1.15 2002/06/26 18:07:21 wiz Exp $
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.\"
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.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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.\" NASA Ames Research Center.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd October 15, 1998
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.Dt SCSICTL 8
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.Os
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.Sh NAME
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.Nm scsictl
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.Nd a program to manipulate SCSI devices and busses
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.Sh SYNOPSIS
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.Nm
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.Ar device
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.Ar command
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.Oo
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.Ar arg Oo ...
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.Oc
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.Oc
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.Sh DESCRIPTION
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.Nm
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allows a user or system administrator to issue commands to and otherwise
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control SCSI devices and busses. It is used by specifying a device or
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bus to manipulate, the command to perform, and any arguments the command
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may require.
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.Nm
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determines if the specified device is an actual device or a SCSI bus
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automatically, and selects the appropriate command set.
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.Pp
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For commands which
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.Nm
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issues a SCSI command to the device directly, any returned sense information
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will be decoded by
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.Nm
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and displayed to the standard output.
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.Sh DEVICE COMMANDS
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The following commands are supported for SCSI devices:
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.Pp
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.Nm format
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.Oo blocksize
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.Oo immediate
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.Oc
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.Oc
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.Pp
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(Low level) format the named device. If the optional
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.Li blocksize
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parameter is provided, the device geometry will be modified to
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use the specified
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.Li blocksize .
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If this parameter is different form the Current or Default Mode Page 3
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parameters, the device will update Mode Page 3 at the successful
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completion of the Format. Device geometry may change as a result of
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using a new device
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.Li blocksize .
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When the optional
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.Li blocksize
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parameter is specified, the Defect List on the drive will revert to
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the original primary defect list created at the time of manufacture
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if available. The drive will usually recertify itself
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during the Format and add any other defective blocks to the new Defect
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List. Some disks may not support the ability to change the blocksize and
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may enter a Degraded Mode when fed a Format command of this type. If this
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happens the standard recovery for the drive requires issuing a correct
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Format command, i.e. one without the blocksize parameter.
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.Pp
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When the
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.Li immediate
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parameter is also specified, the disk is instructed to return from the
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format command right away. It continues to format, and every ten seconds
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.Nm
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issues a TEST UNIT READY command to check the associated sense data. This
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associated sense data has a progress indicator which indicates how far
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the format is progressing. Note well that most SCSI disk drives prior to
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a few years ago do not support this option.
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.Pp
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.Nm identify
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.Pp
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Identify the specified device, displaying the device's SCSI
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bus, target, and lun, as well as the device's vendor, product,
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and revision strings.
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.Pp
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.Nm reassign
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.Ar blkno
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.Oo blkno Oo ...
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.Oc
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.Oc
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.Pp
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Issues a
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.Li REASSIGN BLOCKS
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command to the device, adding the specified blocks to the
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grown defect list. This command is only supported on
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direct access devices.
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.Pp
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.Nm release
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.Pp
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Send a
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.Dq RELEASE
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command to the device to release a reservation on it.
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.Pp
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.Nm reserve
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.Pp
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Send a
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.Dq RESERVE
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command to the device to place a reservation on it.
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.Pp
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.Nm reset
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.Pp
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Reset the device. This command is only supported for devices which
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support the
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.Li SCIOCRESET
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ioctl.
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.Pp
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.Nm reset
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.Pp
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Reset the SCSI bus. This command is only supported if the host adapter
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supports the
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.Li SCBUSIORESET
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ioctl.
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.Pp
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.Nm start
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.Pp
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Send a
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.Dq START
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command to the device. This is useful typically only for
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disk devices.
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.Pp
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.Nm stop
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.Pp
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Send a
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.Dq STOP
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command to the device. This is useful typically only for
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disk devices.
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.Pp
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.Nm tur
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.Pp
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Send a
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.Dq TEST UNIT READY
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command to the device. This is useful for generating
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current device status.
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.Sh BUS COMMANDS
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The following commands are supported for SCSI busses:
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.Pp
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.Nm reset
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.Pp
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Reset the SCSI bus. This command is only supported if the host adapter
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supports the
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.Li SCBUSIORESET
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ioctl.
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.Pp
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.Nm scan
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.Ar target
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.Ar lun
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.Pp
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Scan the SCSI bus for devices. This is useful if a device was not
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connected or powered on when the system was booted. The
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.Ar target
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and
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.Ar lun
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arguments specify which SCSI target and lun on the bus is to be scanned.
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Either may be wildcarded by specifying the keyword
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.Dq any
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or
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.Dq all .
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.Pp
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.Nm detach
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.Ar target
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.Ar lun
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.Pp
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Detach the specified device from the bus. Useful if a device is powered down
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after use. The
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.Ar target
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and
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.Ar lun
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arguments have the same meaning as for the
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.Nm scan
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command, and may also be wildcarded.
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.Sh NOTES
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When scanning the SCSI bus, information about newly recognized devices
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is printed to console. No information is printed for already probed
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devices.
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.Sh FILES
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.Pa /dev/scsibus*
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- for commands operating on SCSI busses
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.Sh SEE ALSO
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.Xr ioctl 2 ,
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.Xr cd 4 ,
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.Xr ch 4 ,
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.Xr sd 4 ,
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.Xr se 4 ,
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.Xr ss 4 ,
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.Xr st 4 ,
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.Xr uk 4
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Nx 1.4 .
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.Sh AUTHORS
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The
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.Nm
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command was written by Jason R. Thorpe of the Numerical Aerospace Simulation
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Facility, NASA Ames Research Center.
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