[HPADM] autoFS problem?

From: Minkov, Ross (ross.minkov_at_hp.com)
Date: 07/30/03

  • Next message: Lal, Neeraj: "[HPADM] SUMMARY : Hiding password embedded in Shell Scripts" 
    Date: Wed, 30 Jul 2003 12:34:46 -0400
To: "hpux admin" <hpux-admin@dutchworks.nl>

    Background
    ==========

    We have an 11.11 HP-UX system using the new autoFS.

    # grep AUTOFS /etc/rc.config.d/nfsconf | grep -v ^#
    AUTOFS=1

    # ps -ef | grep auto | grep -v grep
        root 619 0 0 Jul 21 console 0:09 autofs_proc
        root 616 1 0 Jul 21 ? 0:40
    /usr/lib/netsvc/fs/autofs/automountd

    We NFS mount /usr/local on that system. As we have a mixture of Tru64
    UNIX/HP-UX/Solaris/Linux/AIX systems in a single NIS domain we have
    different /usr/local file systems for each UNIX flavor. We serve one set
    of automount/autoFS maps to all NIS client systems. As the bulk of the
    systems are running Tru64 UNIX we have the Tru64 UNIX /usr/local
    configured for automounting by default.

    hpcis1 # -> ypcat -k auto.common | grep local
    /usr/local alpha:/usrlocal/tru64/data

    On all of the other platforms we have "/usr/local -null" entry in
    /etc/auto_master and /usr/local entry in /etc/(v)fstab to mount the
    appropriate /usr/local on boot. For example on the HP-UX system:

    # grep local /etc/auto_master
    /usr/local -null

    # grep local /etc/fstab
    alpha:/usrlocal/hpux/data /usr/local nfs defaults 0 0

    Problem Description
    ===================

    We have seen the following problem on this HP-UX system with the new
    autoFS. When the system boots up it NFS mounts /usr/local OK. After some
    time (not sure how long) checking for the NFS mounted /usr/local shows
    that it is no longer mounted:

    hpcis1 # -> bdf | grep local

    Trying to cd to /usr/local mounts the Tru64 UNIX /usr/local listed in
    auto.common:

    hpcis1 # -> cd /usr/local
    hpcis1 # -> bdf | grep local
    alpha:/usrlocal/tru64/data 10664584 3466320 7198264 33% /usr/local

    We do not want that. Looks like we have 2 problems:

    1. Why /usr/local unmounts on its own?
    2. Why when we cd to /usr/local we can get past "/usr/local -null" in
    /etc/auto_master and yet successfully mount it? Is the new autoFS
    ignoring /etc/auto_master?

    We have another 11.11 HP-UX system configured to use the old automount
    daemon. We do not see that problem there.

    TIA,
    Ross 

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