Patch-ID# 100249-14
Keywords: automount symbolic link timeout
Synopsis: SunOS 4.1.3: automounter patch
Date: Jun/10/96

Solaris release: 1.1

SunOS release: 4.1.3

Note: The automount fixes for SunOS 4.1.2 found in 100249-13 have been
      moved to patch 103470-01.
      This patch is available for 4.1.3_U1 as 102684 and for
      4.1.4 as 103467.

BugId's fixed with this patch: 1241794 1038308 1048875 1044048 1083225 1106249 1055565 1078206 1044136 1129660

Changes incorporated in this version: 1241794

Relevant Architectures: sparc
    NOTE: sun4 sun4c sun4m

Patches which conflict with this patch:

Patches accumulated and obsoleted by this patch: 100797-01

Obsoleted by:

Files included with this patch:  README
				 automount

Problem description:

100249-14
---------

Bug 1241794  Automount cannot use replicated filesystems from the same server.

100249-13
---------

    Added error message to report that a loopback mount was rejected because
    it is a hierarchal mount. Hierarchal mounts can cause automount
    deadlocks. This was first fixed in 100249-08. An error message was needed
    to inform the user that an automount map contains an invalid entry.

100249-12
---------

	Introduced locking of /etc/mtab in auto_mount.c, in order to resolve
	problems with rpc.rexd.
	
100249-11
---------

	Updated source directory per customer's request, no
	code change.

Bug-ID 1044136
--------------

	The maximum size of UDP RPC messages is 8K under ONC RPC 4.0,
	therefore callrpc() will be blocked due to this limit.

Bug-ID 1078206
--------------

	Problem with recursive mounts

Bug-ID 1055565
--------------

Automounter sometimes fails to do a mount.  Get the messages

        nfscast: select: Invalid argument
        trymany: servers not responding: RPC: Unable to receive

The invalid argument to select is due to a negative timeout being
supplied to select().


Bug 1038308:
------------
	In 4.1, the automounter sets up a different symbolic link
        5 min. after the first access. This happens if there are
        multiple locations for the same mount in the auto mount
        map entry, and those locations don't share the same subdir.

Bug 1048875
-----------

	The automounter forks due to rpc.rexd.  This problem
	is usually seen when using the on command.  The automounter
	will complain it cannot find /etc/mtab.

Bug 1044048
-----------

	Automounter consumes a steady, increasing percentage of memory.
	Coinciding with this is the consumption of swap space as well.

Bug 1083225:
------------

        If an entry is removed from /etc/mtab while the automounter
        daemon is reading it, it is possible for the automounter to
        get into a state where it will loop forever, printing
        "WARNING: /etc/mtab: line <number>: bad entry" on the console
        and hang the server.

Bug 1106249:
------------
        Automount behaves strangely after inserts a 28th
	server to one mount point in /etc/auto.direct.
	The reason for this is automount only support up to 20 servers 
	for 1 mount point on 4.x.    This patch changes this limitation from 
	20 to 128.   In Solaris 2.0, there will be no limitation on this.

Installation Instructions:

1) As root, save a copy of the original automount file:

   mv /usr/etc/automount /usr/etc/automount.fcs

2) Install the new version of automount:

   cp `arch -k`/automount /usr/etc/automount
   chown root /usr/etc/automount
   chgrp staff /usr/etc/automount
   chmod 755 /usr/etc/automount

3) Reboot the system.
