scsimgr.1m (2011 03)

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scsimgr(1M) scsimgr(1M)
affect any HP disk device for which the user has explicitly set a different value for I/O timeout.
A given attribute can not necessary be set at all levels. Certain attributes can only be set at a global
level. That is the case for attributes adjusting global resource usage. Other attributes can only be set at
a per object instance level. Some drivers do not provide the possibility to set attributes at intermediate
level; such as, device type and vendor identifier.
If setting an attribute causes the system to become unstable, it may be possible to recover by rebooting
the system in single user mode. The SCSI subsystem uses attribute factory default values for objects ini-
tialized while in single user mode.
The attribute is specified as an argument in the command line.
scsimgr performs the following operations:
• Activate standby or active non-optimized LUN paths for asymmetric devices.
• Display and clear global statistics or statistics for SCSI objects.
• Clear kernel metric data for SCSI objects.
• Display status and other information for SCSI objects.
• Display information for all the LUN paths to a LUN.
• Get, set and save attributes for SCSI objects.
• Add, remove and list settable attribute scopes for drivers
• Validate the change of LUN associated to a LUN path (replace WWID).
• Validate the change of LUN associated to a legacy DSF (replace a legacy DSF).
• Disable or enable SCSI objects.
• Perform SCSI task management functions such as LUN reset, cold target reset, warm target reset.
• Set or get the user friendly character string identifying a LUN (helpful when the LUN is relocated).
• Synchronize cache for block devices.
• Erase blocks of optical memory devices.
• Inquire SCSI devices for its characteristics.
Options
-d driver Specifies the name of the driver for driver specific commands.
Note: When this option is specified, the driver plug-in (if present) executes the command.
The driver plug-in may not necessarily support all commands. To list the commands sup-
ported by the driver module run the following command:
scsimgr -h -d driver
-f Forces execution of destructive/disruptive operations. With this option, the command exe-
cutes without warning or prompting for confirmation.
-h Prints general usage information or help information on a specific operation
-p Produces a one line parse-able output of values separated by a colon (
:).
-v Displays verbose or extended output where applicable.
command Specifies a supported
scsimgr command. Supported commands include:
activate Activates LUN paths in standby state, or active non-optimized state to
active optimized state for devices with asymmetric access.
clear_stat Clears statistics.
clear_kmstat Clears kernel metric (Kmetrics) data.
cold_bdr Performs a cold reset on a target device.
ddr_add Defines a new settable attribute scope for a driver.
ddr_del Deletes a settable attribute scope for a driver.
ddr_list Lists driver settable attribute scopes.
ddr_name Generates a settable attribute scope covering a SCSI object.
disable Disables a SCSI object.
enable Enables a SCSI object.
erase Pre-erases the medium of a magneto-optical device.
2 Hewlett-Packard Company − 2 − HP-UX 11i Version 3: March 2011