Copyright (c) 1998 The NetBSD Foundation, Inc.
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This code is derived from software contributed to The NetBSD Foundation
by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
NASA Ames Research Center.
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.Dd October 15, 1998 .Dt SCSICTL 8 .Os NetBSD .Sh NAME .Nm scsictl .Nd a program to manipulate SCSI devices and busses .Sh SYNOPSIS .Nm .Ar device .Ar command .Oo .Ar arg Oo ... .Oc .Oc .Sh DESCRIPTION .Nm allows a user or system administrator to issue commands to and otherwise control SCSI devices and busses. It is used by specifying a device or bus to manipulate, the command to perform, and any arguments the command may require. .Nm determines if the specified device is an actual device or a SCSI bus automatically, and selects the appropriate command set.
p For commands which .Nm issues a SCSI command to the device directly, any returned sense information will be decoded by .Nm and displayed to the standard output. .Sh DEVICE COMMANDS The following commands are supported for SCSI devices:
p .Nm format
p (Low level) format the named device.
p .Nm identify
p Identify the specified device, displaying the device's SCSI bus, target, and lun, as well as the device's vendor, product, and revision strings.
p .Nm reassign .Ar blkno .Oo blkno Oo ... .Oc .Oc
p Issues a .Li REASSIGN BLOCKS command to the device, adding the specified blocks to the grown defect list. This command is only supported on direct access devices.
p .Nm reset
p Reset the device. This command is only supported for devices which support the .Li SCIOCRESET ioctl. .Sh BUS COMMANDS The following commands are supported for SCSI busses:
p .Nm reset
p Reset the SCSI bus. This command is only supported if the host adapter supports the .Li SCBUSIORESET ioctl.
p .Nm scan .Ar target .Ar lun
p Scan the SCSI bus for devices. This is useful if a device was not connected or powered on when the system was booted. The .Ar target and .Ar lun arguments specify which SCSI target and lun on the bus is to be scanned. Either may be wildcarded by specifying the keyword .Dq any or .Dq all . .Sh NOTES When scanning the scsi bus, information about newly recognized devices is printed to console. No information is printed for already probed devices. .Sh FILES
a /dev/scsibus* - for commands operating on SCSI busses .Sh SEE ALSO .Xr ioctl 2 , .Xr cd 4 , .Xr ch 4 , .Xr sd 4 , .Xr se 4 , .Xr ss 4 , .Xr st 4 , .Xr uk 4 .Sh AUTHOR The .Nm command was written by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, NASA Ames Research Center. .Sh HISTORY The .Nm command first appeared in .Nx 1.4 .
Indexes created Sun Oct 19 02:09:48 GMT 2025