15.5. Writing to non-rewinding tape devices


A non-rewinding tape device leaves the tape in its current status, after completing the execution of a certain command. For example, after a backup, you could append more data to a non-rewinding tape device. You can also use it to avoid any unexpected rewinds.

Prerequisites

  1. You have installed the mt-st package. For more information, see Installing tape drive management tool.
  2. Load the tape drive:

    # mt -f /dev/nst0 load

Procedure

  1. Check the tape head of the non-rewinding tape device /dev/nst0:

    # mt -f /dev/nst0 status
  2. Specify the pointer at the head or at the end of the tape:

    # mt -f /dev/nst0 rewind
  3. Append the data on the tape device:

    # mt -f /dev/nst0 eod
    # tar -czf /dev/nst0 /source/directory/
  4. Back up the /source/directory/ to the tape device:

    # tar -czf /dev/nst0 /source/directory/
    tar: Removing leading `/' from member names
    /source/directory/
    /source/directory/man_db.conf
    /source/directory/DIR_COLORS
    /source/directory/rsyslog.conf
    [...]
  5. View the status of the tape device:

    # mt -f /dev/nst0 status

Verification

  • View the list of all files on the tape device:

    # tar -tzf /dev/nst0
    /source/directory/
    /source/directory/man_db.conf
    /source/directory/DIR_COLORS
    /source/directory/rsyslog.conf
    [...]
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