Patch Name: PHCO_20868

Patch Description: s700_800 10.10 savecore(1M) cumulative patch

Creation Date: 99/01/08

Post Date:  00/02/01

Hardware Platforms - OS Releases:
	s700: 10.10
	s800: 10.10

Products: N/A

Filesets:
	OS-Core.UX-CORE

Automatic Reboot?: No

Status: General Release

Critical: No

Path Name: /hp-ux_patches/s700_800/10.X/PHCO_20868

Symptoms:
	PHCO_20868:
	( SR: 8606124057 DTS: JAGac39438 )
	On large memory systems that use dedicated dump devices,
	savecore may fail with a "Broken pipe" error in the INDEX
	file.  The messages in the INDEX file are:
	warning   savecore: running in the background
	error     savecore: write failed <file path>: Broken pipe
	warning   savecore: only ##### of ##### bytes saved.

	PHCO_12688:
	( SR: 5003387886 1653230540 DTS: DSDe428773 DSDe433024
	 DSDe439608 DSDe439647 DSDe428326 DSDer26755 )
	If the dump area is beyond 2Gb on the physical disk, the
	following error message results when savecore attempts to
	read the dump:
	savecore: seek failed <dump device>: <random error message>
	savecore: could not open dump

Defect Description:
	PHCO_20868:
	( SR: 8606124057 DTS: JAGac39438 )
	On large memory systems using dedicated dump devices,
	savecore puts itself into the background and protects itself
	from the RC scripts terminating by ignoring SIGHUP.  When a
	compression process is spawned, the handling of SIGHUP is
	returned to the default (terminate the process).  When the
	RC scripts completed, the compression process catches the
	hangup signal and terminates.  Savecore detects this as a
	broken pipe as it tries to write data out to the compression
	process.

	Resolution:
	Remove the code that revert the handling of SIGHUP back to
	SIG_DFL from child processes.

	PHCO_12688:
	( SR: 5003387886 1653230540 DTS: DSDe428773 DSDe433024
	 DSDe439608 DSDe439647 DSDe428326 DSDer26755 )
	When the size of a dump device is greater than 4Gb, savecore
	cannot access the dump.  The savecore command will fail
	with:
	    savecore: seek failed <dump device>: <error message>
	    savecore: could not open dump
	The <error message> will tend to be random as savecore is
	reporting an error that did not really occur.

SR:
	8606124057

Patch Files:
	/sbin/savecore

what(1) Output:
	/sbin/savecore:
		PHCO_17276 $Revision: 78.3.1.3.1.1 $
		PATCH/10_10 PHCO_13917 $Revision: 76.162.1.14.1.60 $
		PATCH_10_10: hpux_rel.o main.o args.o source.o targe
			t.o util.o disk_area.o module.o image.o inde
			x.o compress.o tape.o 00/01/18

cksum(1) Output:
	2915190708 212992 /sbin/savecore

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHCO_12688

Equivalent Patches: None

Patch Package Size: 270 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 PHCO_20868

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHCO_20868.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHCO_20868.  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 PHCO_20868.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/PHCO_20868.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None