Patch Name: PHKL_16959

Patch Description: s700 10.20 Physical dump devices configuration patch

Creation Date: 98/12/04

Post Date:  98/12/24

Hardware Platforms - OS Releases:
	s700: 10.20

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical: No

Path Name: /hp-ux_patches/s700/10.X/PHKL_16959

Symptoms:
	PHKL_16959:
	Cannot configure physical dump devices after installing
	PHKL_16455.(and the superceeding patches namely PHKL_16448
	and PHKL_16750).  The size of the dump devices are zero in
	the configuration, resulting in lost dump data in the event
	of a system crash.
	This only impacts physical dump devices of size greater than
	2GB.  Cannot configure dump past 2GB on various devices or
	cards that actually allow IODC writes beyond .  The message
	seen at configuration time is:
	WARNING:
	Dump space on device 0x######## cannot be configured
	past ###### bytes.
	         Device 0x######## skipped.

Defect Description:
	PHKL_16959:
	This defect was introduced in PHKL_16455 and also exists
	in PHKL_16448 and PHKL_16750. We cannot configure
	physical devices for dump. Physical dump devices are
	configured with a length of zero and may lead to loss of
	dump data.
	The behavior of lv_readlabel() is changed by the above
	patches.  The dump configuration code indirectly calls
	lv_readlabel() through cpd_label_map() function and
	LVM_MAP() macro.  The change in behavior causes the dump
	configuration code in set_offset_and_size() to consider any
	physical device a LVM device.  The set_offset_and_size()
	code ignores LVM devices (offset and size are set by the LVM
	code or it is a LVM PV which is not allowed).  Since all
	devices are being considered LVM devices, all physical
	devices have an offset and size of zero.  This effectively
	negates physical devices as a dump device.
	The check for a physical LVM device has been changed from
	using the LVM_MAP() macro to lv_getlvmrec().  LVM devices
	and non-LVM devices are now correctly identified and
	configured for dump.
	Greater than 2GB devices:
	The interfaces known to support IODC past 2GB were added to
	the statically allocated and initialized iodc_table[].  This
	allows dump to write past 2GB up to the unsigned, 32-bit,
	4GB address.

SR:
	1653284059

Patch Files:
	/usr/conf/lib/libhp-ux.a(dump_conf.o)

what(1) Output:
	/usr/conf/lib/libhp-ux.a(dump_conf.o):
		dump_conf.c    $Date: 98/11/25 14:11:12 $ $Revision:
			 1.6.98.8 $ PATCH_10.20 (PHKL_16959)

cksum(1) Output:
	3389887334 9596 /usr/conf/lib/libhp-ux.a(dump_conf.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 10.20: PHKL_16750

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_16957:
	s800: 10.20

Patch Package Size: 70 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 PHKL_16959

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_16959.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/PHKL_16959.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/PHKL_16959.  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 PHKL_16959.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/PHKL_16959.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_16750 .
	For successful installation please insure that PHKL_16750
	is in the same depot with PHKL_16959, or PHKL_16750  is
	already installed.