NAME    [Toc]    [Back]

       devswmgr - utility to manage the device switch database

SYNOPSIS    [Toc]    [Back]

       /sbin/devswmgr [-option [parameter]]

OPTIONS    [Toc]    [Back]

       Displays the following information about the device switch
       database:

              Whether a device switch database was read from  the
              primary file or from a backup file

              The number of entries that are in the device switch
              table Displays the major  numbers  that  have  been
              reserved  by  all  drivers,  a  named driver, or an
              instance of a named driver.

              A driver that requires more than one entry  in  the
              device  switch  table uses a unique instance number
              to  reference  each  of  its  device  switch  table
              entries.   Displays  help for the devswmgr command.
              Releases all the major numbers for a device  driver
              if just the driver name is specified.  Releases one
              major number for a device driver if  the  NAME  and
              the INSTANCENUM of the driver are specified.

DESCRIPTION    [Toc]    [Back]

       The  devswmgr  command  helps you manage the device switch
       table by displaying information about the devices  drivers
       in the table.

       You  can  also  use  the  command to release device switch
       table entries.  Typically, you release the entries  for  a
       driver  after you have unloaded the driver and do not plan
       to reload it later.  Releasing the entries frees them  for
       use by other device drivers.

EXAMPLES    [Toc]    [Back]

       The following example shows that a device switch table was
       loaded from the primary  device  and  that  there  are  70
       entries  in  it:  %  /sbin/devswmgr -display Device switch
       information
         device switch database read from primary file
         device switch table has 70 entries The following example
       shows  the  major  numbers in the device switch table that
       have been  reserved  for  the  driver  named  cam_disk:  %
       /sbin/devswmgr -getnum driver=cam_disk

       Device switch reservation list

                                                 (*=entry in use)
                   driver name             instance   major
         -------------------------------   --------   -----
                                cam_disk          1      8*

FILES    [Toc]    [Back]

       The file that manages the device switch databases The primary
  device switch database file The backup device switch
       database file

SEE ALSO    [Toc]    [Back]

       Commands: hwmgr(8)



                                                      devswmgr(8)