(tar.info.gz) Magnetic Tape Control

Info Catalog (tar.info.gz) General-Purpose Variables (tar.info.gz) Backup Parameters (tar.info.gz) User Hooks
 
 5.4.2 Magnetic Tape Control
 ---------------------------
 
 Backup scripts access tape device using special "hook functions".  These
 functions take a single argument -- the name of the tape device.  Their
 names are kept in the following variables:
 
  -- Backup variable: MT_BEGIN
      The name of "begin" function.  This function is called before
      accessing the drive.  By default it retensions the tape:
 
           MT_BEGIN=mt_begin
 
           mt_begin() {
               mt -f "$1" retension
           }
 
  -- Backup variable: MT_REWIND
      The name of "rewind" function.  The default definition is as
      follows:
 
           MT_REWIND=mt_rewind
 
           mt_rewind() {
               mt -f "$1" rewind
           }
 
  -- Backup variable: MT_OFFLINE
      The name of the function switching the tape off line.  By default
      it is defined as follows:
 
           MT_OFFLINE=mt_offline
 
           mt_offline() {
               mt -f "$1" offl
           }
 
  -- Backup variable: MT_STATUS
      The name of the function used to obtain the status of the archive
      device, including error count.  Default definition:
 
           MT_STATUS=mt_status
 
           mt_status() {
               mt -f "$1" status
           }
 
Info Catalog (tar.info.gz) General-Purpose Variables (tar.info.gz) Backup Parameters (tar.info.gz) User Hooks
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