From: Minkov, Ross (ross.minkov@hp.com)
Date: Wed Jul 30 2003 - 12:34:46 EDT
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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