scsimgr_eschgr(7)					 Miscellaneous Information Manual					 scsimgr_eschgr(7)

NAME

       scsimgr_eschgr - SCSI class driver eschgr plug-in for scsimgr

DESCRIPTION

       The  SCSI  class driver plug-in for implements management and diagnostic operations specific to classes of devices bound to the driver.	is
       the native HP-UX SCSI class driver that handles, by default, all library/changer devices.

       The plug-in handles the following operations for driver

	 o  Display and clear driver global statistics and the statistics it maintains on instances of LUNs bound to it, and on related LUN paths.

	 o  Display status and other information maintained by driver on LUNs bound to it.

	 o  Get, set and save driver global and per-lun instance attributes.

   Commands
       The user can explicitly send the following commands to driver plug-in by specifying the

	      Clears statistics.

	      Displays information on attributes.

	      Displays status and other information.

	      Displays statistics.

	      Saves value of attributes in a persistent store.

	      Set current values of attributes.

       Note: Refer to scsimgr(1M) for the syntax of the above commands.

       However, the only instances where it is necessary to explicitly send a command to the plug-in is  when  performing  operations  on  objects
       global to driver global statistics, attributes or status information.  In all the other cases, automatically invokes the plug-in to perform
       the driver specific part of the operation, when the operation applies to LUNs bound to driver or to their LUN paths.

   Attributes
       The following table lists driver specific attributes.  For details on the concept of attribute refer to scsimgr(1M).

       Note: The following conventions are used:

	 o  RO is Read Only.
	 o  RW is Read Write.
	 o  uint32 is unsigned 32 bits integer.

       ----------------------------------------------------------------
       Object  Attribute Name  RO/RW  Type     Description
       ----------------------------------------------------------------
       Global  version	       RO     string   Version	  of	driver
					       eschgr
       ----------------------------------------------------------------
       LUN     default_secs    RW     uint32   Timeout	for  all  com-
					       mands  not   referenced
					       below.
					       Default: 30
       ----------------------------------------------------------------

	       move_secs       RW     uint32   Timeout	for  the  move
					       command.
					       Default: 1200
       ----------------------------------------------------------------
	       readelem_secs   RW     uint32   Timeout	for  the  read
					       element status command.
					       Default: 600
       ----------------------------------------------------------------
	       initelem_secs   RW     uint32   Timeout	for  the  ini-
					       tialize element	status
					       command.
					       Default: 600
       ----------------------------------------------------------------
	       readaddr_secs   RW     uint32   Timeout	for  modesense
					       0x1D command.
					       Default: 600
       ----------------------------------------------------------------
	       exchange_secs   RW     uint32   Timeout	   for	   the
					       exchange command.
					       Default: 600
       ----------------------------------------------------------------

   I/O Load Balancing and Multi-Pathing Policies
       The driver does not support load balancing and has minimal support for multi-pathing.

       When  the device is first opened after a system boot, a path is chosen and will remain fixed.  If the path fails, the next open will pick a
       new path.

EXAMPLES

       To display plug-in general help and supported commands:

       To get driver global statistics:

       To clear driver global statistics:

       To get driver global status information:

       To display information about driver global attributes:

AUTHOR

       SCSI class driver plug-in for was developed by HP.

SEE ALSO

       scsictl(1M), scsimgr(1M), autochanger(7), intro(7), scsi(7).

																 scsimgr_eschgr(7)