Installation guide

prevent
This command prevents media removal from the selected device.
release {
device | simqueue} [ nexus-information ]
This command releases a reserved SCSI device or releases a frozen
SIM queue after an error. The
device argument specifies a reserved
SCSI device to be released. The extent release capability for direct
access devices is not implemented.
The simqueue argument issues a release SIMQ CCB to thaw a frozen
SIM queue. Ordinarily, this command is not necessary because the
SIM queue is automatically released after errors occur. If the nexus
information is omitted, the SIM queue for the selected SCSI device is
released.
The following example shows the release command:
scu> release simqueue bus 1 target 6 lun 0
reserve device
This command issues a SCSI Reserve command to the selected device.
The entire logical unit is reserved for the exclusive use of the initiator.
Extent reservation for direct access devices is not implemented.
reset {bus | device} [
nexus-information ]
This command resets the SCSI bus or the selected SCSI device.
The bus argument issues a CAM Bus Reset CCB. If the nexus
information is omitted, the bus associated with the selected SCSI
device is reset. The reset bus command is restricted to superuser
(root) access because it can cause loss of data to some devices.
The device argument issues a CAM Bus Device Reset CCB. If the
nexus information is omitted, the selected device is reset. The reset
device command requires write access to the selected device because
the command can cause loss of data to some devices.
If nexus information is specified, this command is restricted to the
superuser.
resume
This command causes a CD−ROM audio disc to resume play after it
has been paused with the pause command.
SCSI/CAM Utility Program B–7