query or change SDI device timeout tunables
sdi_timeout [-fsFC][-l 6|10|12][[device_descriptor[command[value]]...]...]
sdi_timeout -c device-type
sdi_timeout -b [node_descriptor]
sdi_timeout command reports or changes timeout tunables
for use by the SDI timeout mechanism.
When a timeout is detected by the system,
SDI begins its error recovery gauntlet
in an attempt to get the SCSI peripheral or bus
back into a functional state.
Because of the severity of the error recovery mechanism,
timeout values should be chosen conservatively
to avoid unnecessary timeouts.
If sdi_timeout is invoked without a value,
it lists the timeout values being used in the running kernel.
The values are listed for all commands and all devices
if no device_descriptor is specified.
If one or more device_descriptor is specified on the command line,
all commands and values for the system devices that match the
specified device_descriptor are printed.
If a device_descriptor
and one or more command are specified,
the values of those commands are printed
for the matching system devices.
When sdi_timeout is invoked,
it processes the rest of the command line,
and then loads the new timeout values into the running kernel.
Force immediate loading of timeout values.
If a particular node-descriptor is specified,
only those values are loaded.
Display list of valid commands for device type.
The command given in the argument list
is a hex value representing
a SCSI command.
This is used to set the timeout value for
a vendor-unique SCSI command.
The hex value must begin with 0x.
Reset the commands matched by the following arguments
to the originally shipped defaults.
The arguments must not include values.
If no other arguments are specified,
all timeout values are reset to the defaults.
List the originally shipped defaults for the commands queried.
The arguments must not include values.
If no other arguments are specified, the original shipped defaults
are listed for all devices and commands.
Modify the command specified on the command line
to refer only to the 6-, 10-, or 12-byte SCSI command.
Otherwise, commands refer to all lengths.
Disable all timeouts.
Query all HBA drivers that have claimed a device
to see which ones support timeouts and the ensuing error recovery.
Also, report whether timeouts
are currently enabled or disabled.
Silent mode. Do not prompt user before committing changes.
Enable all timeouts.
The device-descriptor can be in one of the following forms:
Must be one of CDROM, ``disk'', ``tape'', WORM, or CHANGER.
When used as a device-descriptor,
the node-descriptor is equivalent
to specifying the full inquiry string.
For example, specifying a node-descriptor for a device
that happens to be identical to another device on the system
results in the query or modification applying to both devices.
for an explanation of this notation.
The string returned by an INQUIRY to the device.
can be a prefix of the full INQUIRY string.
The command for which the timeout value should be displayed or changed.
A list of commands can be obtained using
sdi_timeout -c device_type.
The timeout value specified in seconds.
There is never a need to reboot after using sdi_timeout;
all changes are made dynamically to the running kernel.
Because the changes are not instantaneous,
the kernel continues running with the existing timeout parameters
until sdi_timeout completes.
If you are booting a system with a device
that has unique timeout value restrictions,
specify SDI_TIMEOUT=no at the boot prompt (see
to disable timeouts,
and then use sdi_timeout to enter the correct timeout values and
to reenable timeouts.
Because sdi_timeout calls other system commands
to perform some of its tasks,
it reports all errors encountered by those commands
and cleans up intermediate files created in the process.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004