iosrestart(8)                                                 iosrestart(8)

NAME
     iosrestart - restart a SCSI device, port, or controller

SYNOPSIS
     /sbin/iosrestart devname

     /sbin/iosrestart portname

     /sbin/iosrestart ctlrname

DESCRIPTION
     The iosrestart utility performs a reinitialization of SCSI software
     and hardware. iosrestart is an interactive utility. The user receives
     prompts through each step of the process.

     devname is the SCSI device name as it appears in the autoconf file.

     portname is the SCSI port name or bus node as it appears in the auto-
     conf file.

     ctlrname is the name of the SCSI controller.

     iosrestart devname
          Restart a single device. This command performs a hard reset of
          the specified device. The utility probes the specified device to
          ensure that it still exists and then reinitializes all the
          software structures associated with that device.

          This command has no effect on any other device, on the port, or
          on the controller.

     iosrestart portname
          Restart a chain of devices on the same SCSI port. This command
          performs a hard reset of the specified SCSI port (bus) which
          results in a hard reset of each device attached to that port.
          After the reset, the specified SCSI port is probed. All of the
          software structures associated with each device on that port are
          reinitialized.

          This command has no effect on the controller node or any device
          attached to a neighboring port on the same controller.

     iosrestart ctlrname
          Reinitialize the SCSI controller card and all attached devices.
          This command performs a hard reset of the controller which means
          a hard reset of all the devices attached to that controller.
          After the reset, the controller is probed to verify that the con-
          troller and its devices exist. All of the software structures
          associated with that controller and its devices are reinitial-
          ized.





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iosrestart(8)                                                 iosrestart(8)

NOTES
     iosrestart cannot be performed on the root device, its port, or its
     controller.

     iosrestart cannot be performed on a device that is configured as a
     system swap device.

SEE ALSO
     devname(7), autoconf(8).













































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