==========================================================================
The checksum's (found through sum -r) of the files that you have received
(other than this README) are as follows:

55163      2 patchSG0003477.idb
61977      3 patchSG0003477
00278     46 patchSG0003477.nfs_sw
07835      3 patchSG0003477.nfs_man
==========================================================================



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       1.  Patch_SG0003477_Release_Note

       This release note describes patch SG0003477 to IRIX 6.2.

       1.1  Supported_Hardware_Platforms

       Patch 3477 contains bug fixes for all IRIX 6.2 supported
       hardware	platforms.


       1.2  Supported_Software_Platforms

       This patch contains bug fixes for NFS and Failsafe-NFS on a
       system running IRIX 6.2.	 The software cannot be	installed
       on other	configurations.

       This patch replaces patch SG0003058.

       In order	for fixes in patch SG0003477 to	work correctly,
       patch SG0001608 or higher from the NFS patch set	must also
       be installed.  Without this, the	user commands will fail
       because kernel modifications required for patch SG0003477
       are contained in	patch SG0001608	and its	successors.

       Patch SG0003477 replaces	patches	SG0001745, SG0001679,
       SG0001621, SG0001276 and	SG0002278 and SG0003058	and
       contains	only the user commands from SG0001621.	Patch
       SG0001679 had incorrect relationships defined.  Patch
       SG0003477 is incompatible with patch SG0001448 and previous
       NFS rollup patch	sets because they did not have the proper
       NFS kernel modifications	necessary for patch SG0003477.

       Should problems arise, delete the latest	NFS rollup patch
       set and Status monitor/Failsafe locking patch set.
       Afterward, re-install SG0003477 and SG0001608 (or
       successor).

       1.3  Bugs_Fixed_by_Patch_SG0003477

       This patch contains fixes for the following bugs	in IRIX
       6.2.  Bug numbers from Silicon Graphics bug tracking system
       are included for	reference.

	  o Bug	577215 - ha_statd -a fails causing failsafe to
	    shutdown. ha_statd timed out, due to rpc.statd was busy
	    processing nfs system locks.
















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       1.4  Bugs_Fixed_by_Previous_rollup_patches

       The following IRIS bugs were fixed by previous rollup
       patches.	 Bug numbers from Silicon Graphics bug tracking
       system are included for reference.

	  o Change the severity	of a syslog message to INFO. (Bug
	    #512457)

	  o On FailSafe	systems, rpc.statd can cause ha_statd to
	    timeout, causing failsafe to shutdown. (Bug	#577215)

	  o On FailSafe	systems, it is possible	for rpc.statd to
	    attempt to send a crash notification to itself.  This
	    results in some non-terminating loop behaviour in
	    rpc.statd where the	crash notification is sent to
	    itself every 10 seconds.  (Bug #588290)

	  o File locking can hang when the server is rebooted.
	    (Bug #495987)

	  o Non-SGI clients using NFS over TCP can hang	when
	    attempting to acquire file locks.  (Bug #499530)

	  o rpc.statd and rpc.lockd have been updated to support
	    highly available environments.  Specifically, these
	    changes are	necessary for the IRIS FailSafe	product.
	    (BUG 370459)

       1.5  Subsystems_Included_in_Patch_SG0003477

       This patch release includes these subsystems:

	  o patchSG0003477.nfs_man.nfs

	  o patchSG0003477.nfs_sw.nfs


       1.6  Installation_Instructions

       Because you want	to install only	the patches for	problems
       you have	encountered, patch software is not installed by
       default.	 After reading the descriptions	of the bugs fixed
       in this patch (see Section 1.3),	determine the patches that
       meet your specific needs.

       If, after reading Sections 1.1 and 1.2 of these release
       notes, you are unsure whether your hardware and software
       meet the	requirements for installing a particular patch,	run
       inst.  The inst program does not	allow you to install
       patches that are	incompatible with your hardware	or











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       software.

       Patch software is installed like	any other Silicon Graphics
       software	product.  Follow the instructions in your Software
       Installation Administrator's Guide to bring up the miniroot
       form of the software installation tools.

       Follow these steps to select a patch for	installation:

	 1.  At	the Inst> prompt, type

	     install patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 2.  Initiate the installation sequence. Type

	     Inst> go

	 3.  You may find that two patches have	been marked as
	     incompatible.  (The installation tools reject an
	     installation request if an	incompatibility	is
	     detected.)	 If this occurs, you must deselect one of
	     the patches.

	     Inst> keep	patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 4.  After completing the installation process,	exit the
	     inst program by typing

	     Inst> quit



       1.7  Patch_Removal_Instructions

       To remove a patch, use the versions remove command as you
       would for any other software subsystem.	The removal process
       reinstates the original version of software unless you have
       specifically removed the	patch history from your	system.

       versions	remove patchSGxxxxxxx

       where xxxxxxx is	the patch number.

       To keep a patch but increase your disk space, use the
       versions	removehist command to remove the patch history.

       versions	removehist patchSGxxxxxxx











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       where xxxxxxx is	the patch number.

       1.8  Known_Problems
























































