Patch Name: PHNE_12689

Patch Description: s700_800 10.X NTPv3.5 xntpd (slew, NO STEP)

Creation Date: 97/09/25

Post Date:  97/09/26

Hardware Platforms - OS Releases:
	s700: 10.00 10.01 10.10 10.20 10.30
	s800: 10.00 10.01 10.10 10.20 10.30

Products: N/A

Filesets:
	InternetSrvcs.INETSVCS-BOOT

Automatic Reboot?: No

Status: Special Superseded

Critical: No

Path Name: /hp-ux_patches/s700_800/10.X/PHNE_12689

Symptoms:
	PHNE_12689:
	  -/usr/sbin/xntpd does not slew the time when the
	    adjustment is greater than 128 milliseconds

	Some customers want the time daemon to never step the
	system clock in an abrupt adjustment.  This patch provides
	a new executable "/usr/sbin/xntpd" that will never
	make a step adjustment, instead performing a graceful
	slewing adjustment.  This also means that the system clock
	will never be adjusted backwards in time, which can be
	important for financial transactions and some databases

Defect Description:
	PHNE_12689:
	Some customers have requested this special behavior
	where the time daemon never makes a step adjustment.

	This patch provides a special version of the time daemon
	"/usr/sbin/xntpd" which has the NO STEP behavior.
	The time adjustments are made in a graceful slewing
	fashion, and the system clock is never adjusted backwards.
	This can be important for financial transactions and some
	databases.

SR:
	1653181347

Patch Files:
	/usr/sbin/xntpd
	/sbin/init.d/xntpd

what(1) Output:
	/sbin/init.d/xntpd:
		None
	/usr/sbin/xntpd:
		None

cksum(1) Output:
	2760170988 327680 /usr/sbin/xntpd
	2751447504 2202 /sbin/init.d/xntpd

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches: None

Patch Package Size: 380 KBytes

Installation Instructions:
	Please review all instructions and the Hewlett-Packard
	SupportLine User Guide or your Hewlett-Packard support terms
	and conditions for precautions, scope of license,
	restrictions, and, limitation of liability and warranties,
	before installing this patch.
	------------------------------------------------------------
	1. Back up your system before installing a patch.

	2. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHNE_12689

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHNE_12689.depot

	5b. For a homogeneous NFS Diskless cluster run swcluster on the
	    server to install the patch on the server and the clients:

		swcluster -i -b

	    This will invoke swcluster in the interactive mode and
	    force all clients to be shut down.

	    WARNING: All cluster clients must be shut down prior to the
		     patch installation.  Installing the patch while the
		     clients are booted is unsupported and can lead to
		     serious problems.

	    The swcluster command will invoke an swinstall session in which
	    you must specify:

		alternate root path  -  default is /export/shared_root/OS_700
		source depot path    -  /tmp/PHNE_12689.depot

	    To complete the installation, select the patch by choosing
	    "Actions -> Match What Target Has" and then "Actions -> Install"
	    from the Menubar.

	5c. For a heterogeneous NFS Diskless cluster:

		- run swinstall on the server as in step 5a to install
		  the patch on the cluster server.

		- run swcluster on the server as in step 5b to install
		  the patch on the cluster clients.

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHNE_12689.  If you do not wish to retain a
	copy of the original software, you can create an empty file
	named /var/adm/sw/patch/PATCH_NOSAVE.

	Warning: If this file exists when a patch is installed, the
	         patch cannot be deinstalled.  Please be careful
		 when using this feature.

	It is recommended that you move the PHNE_12689.text file to
	/var/adm/sw/patch for future reference.

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHNE_12689.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	The slewing daemon is less accurate than the normal
	/usr/sbin/xntpd, and it takes longer to converge when
	first started up.  It should only be used on systems
	that have a special need for this slewing behavior
	(usually because they are allergic to any step change
	in the time) and are willing to accept the reduced
	accuracy.