Patch Name: PHCO_29800

Patch Description: s700_800 11.00 vxdump(1M) hang

Creation Date: 03/09/26

Post Date: 03/10/27

Hardware Platforms - OS Releases:
	s700: 11.00
	s800: 11.00

Products:
	HP JFS3.3

Filesets:
	JFS.JFS-BASE-KRN,fr=3.3,fa=HP-UX_B.11.00_32/64,v=HP

Automatic Reboot?: No

Status: General Release

Critical:
	Yes
	PHCO_29800: HANG
		A vxdump process could hang forever.

Category Tags:
	defect_repair general_release critical halts_system

Path Name: /hp-ux_patches/s700_800/11.X/PHCO_29800

Symptoms:
	PHCO_29800:
	A vxdump process could hang forever.

Defect Description:
	PHCO_29800:
	vxdump forks a child process which is the master process
	responsible for selecting the files to back up.  This
	master process forks three children (slaves) that take
	turns reading files and then writing them to tape.  The
	signal that is used to communicate between these slaves
	is not handled properly, causing a slave to wait forever
	to receive a signal.  This results in vxdump hanging.

	Resolution:
	The signal handling mechanism in vxdump has been modified
	to prevent this hang.

Enhancement:
	No

SR:
	8606326332

Patch Files:
	
	JFS.JFS-BASE-KRN,fr=3.3,fa=HP-UX_B.11.00_32/64,v=HP:
	/usr/lbin/fs/vxfs3.3/vxdump

what(1) Output:
	
	JFS.JFS-BASE-KRN,fr=3.3,fa=HP-UX_B.11.00_32/64,v=HP:
	/usr/lbin/fs/vxfs3.3/vxdump:
		vxdump     Sep 25 2003 PATCH_11_00 PHCO_29800

cksum(1) Output:
	
	JFS.JFS-BASE-KRN,fr=3.3,fa=HP-UX_B.11.00_32/64,v=HP:
	2830267086 106547 /usr/lbin/fs/vxfs3.3/vxdump

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHCO_29310:
	s700: 11.11
	s800: 11.11

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 PHCO_29800

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHCO_29800.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHCO_29800.  If you do not wish to retain a
	copy of the original software, include the patch_save_files
	option in the swinstall command above:

		-x patch_save_files=false

	WARNING: If patch_save_files is false when a patch is installed,
		 the patch cannot be deinstalled.  Please be careful
		 when using this feature.

	For future reference, the contents of the PHCO_29800.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHCO_29800.depot

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

		dd if=/tmp/PHCO_29800.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None