unable to use tape drive as any other user than root

From: Hardy, Andrew (Andrew.Hardy_at_marks-and-spencer.com)
Date: 01/15/04

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    Date: Thu, 15 Jan 2004 12:45:05 -0000
To: "sunmanagers" <sunmanagers@sunmanagers.org>

    I recently uninstalled Veritas Netbackup from an E3500, which was also
    previously attached to a tape robot.
    I have since attached a single DLT7000 tape drive onto the server, but am
    unable to write or get the status of the drive, by any user other than
    "root".
    I need to be able to do backups to this device, as user "oracle".

    I have replaced the st.conf file, back to it's original state, from before the
    Netbackup installation.
    Does anyone know if this is related to the previous Netbackup installation and
    / or know of any fixes ?
    If I attach this device to a different server I can then run a status to this
    device as any user.

    Many Thanks

    Andy Hardy

    As root user:

    mt -f /dev/rmt/0 status

    Sun DLT7000 tape drive:
    sense key(0x6)= Unit Attention residual= 0 retries= 0
    file no= 0 block no= 0

    As oracle user:

    mt -f /dev/rmt/0 status

    /dev/rmt/0: write protected or reserved

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