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st(1M)									st(1M)

NAME
       st - shared tape administration

SYNOPSIS
       device_file

DESCRIPTION
       The  command  provides users with a command-line interface to check the
       status of a shared tape device or to reclaim a shared tape device  from
       a host system that has failed while holding a reservation on the shared
       tape device.  The command can also be used  for	the  same  purpose  on
       shared  library robotic devices.	 To use the command you must have root
       user id.

       Please see examples below for usage.

   Options
       recognizes the following options and arguments:

       Specifies the tape device file or sctl/esctl pass-through device
		      file for the shared tape/library device. This  parameter
		      is  mandatory and will report an error if device_file is
		      omitted.

       Allows the user to reclaim a shared tape device or shared
		      library robotic device in the case where a  host	failed
		      while  holding a reservation on the shared device.  This
		      option causes a bus device reset to  be  issued  to  the
		      device specified by the option.

       Prints out the current status of the shared tape/library
		      device specified by the option.

RETURN VALUE
       returns 0 upon successful completion and 1 otherwise.

EXAMPLES
       The following shows three examples of output from the above command.

       The  above  output  indicates  that  the	 shared	 device is reserved by
       another host and is therefore unavailable at this time.

       The above output indicates that the shared device is not ready for  use
       at this time.

       The  above  output indicates that the shared device is ready for use at
       this time.

       To reclaim a shared tape/library device from a failed host, the follow‐
       ing command can be used:

WARNINGS
       The  option must be used with care. When reclaiming devices, it must be
       ensured that the host from which the device is being reclaimed  has  in
       fact  failed,  as data may be lost as the result of reclaiming a device
       that is currently in use by another host.

AUTHOR
       was developed by Hewlett-Packard.

SEE ALSO
       mt(1), scsi(7), scsi_ctl(7).

									st(1M)
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