scsictl(8) - NetBSD Manual Pages

SCSICTL(8)              NetBSD System Manager's Manual              SCSICTL(8)


NAME

     scsictl - a program to manipulate SCSI devices and busses


SYNOPSIS

     scsictl device command [arg [...]]


DESCRIPTION

     scsictl 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.  scsictl determines if the specified device is
     an actual device or a SCSI bus automatically, and selects the appropriate
     command set.

     For commands which scsictl issues a SCSI command to the device directly,
     any returned sense information will be decoded by scsictl and displayed
     to the standard output.


DEVICE COMMANDS

     The following commands are supported for SCSI devices:

     format

     (Low level) format the named device.

     identify

     Identify the specified device, displaying the device's SCSI bus, target,
     and lun, as well as the device's vendor, product, and revision strings.

     reassign blkno [blkno [...]]

     Issues a REASSIGN BLOCKS command to the device, adding the specified
     blocks to the grown defect list.  This command is only supported on di-
     rect access devices.

     reset

     Reset the device.  This command is only supported for devices which sup-
     port the SCIOCRESET ioctl.


BUS COMMANDS

     The following commands are supported for SCSI busses:

     reset

     Reset the SCSI bus.  This command is only supported if the host adapter
     supports the SCBUSIORESET ioctl.

     scan target lun

     Scan the SCSI bus for devices.  This is useful if a device was not con-
     nected or powered on when the system was booted.  The target and lun ar-
     guments specify which SCSI target and lun on the bus is to be scanned.
     Either may be wildcarded by specifying the keyword ``any'' or ``all''.

     detach target lun

     Detach the specified device from the bus. Useful if a device is powered
     down after use.  The target and lun arguments have the same meaning as
     for the scan command, and may also be wildcarded.


NOTES

     When scanning the SCSI bus, information about newly recognized devices is
     printed to console. No information is printed for already probed devices.


FILES

     /dev/scsibus* - for commands operating on SCSI busses


SEE ALSO

     ioctl(2), cd(4), ch(4), sd(4), se(4), ss(4), st(4), uk(4)


HISTORY

     The scsictl command first appeared in NetBSD 1.4.


AUTHORS

     The scsictl command was written by Jason R. Thorpe of the Numerical
     Aerospace Simulation Facility, NASA Ames Research Center.

NetBSD 1.6                     October 15, 1998                              2