Patch Name: PHKL_14763

Patch Description: s700_800 11.00 JFS extended map inodes cause fsck failure

Creation Date: 98/04/13

Post Date:  98/05/13

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

Products: N/A

Filesets:
	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP
	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	No (superseded patches were critical)
	PHKL_13202: CORRUPTION

Category Tags:
	defect_repair general_release critical corruption

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_14763

Symptoms:
	PHKL_14763:
	The previous patch has been recut to include compile-based
	performance tuning.  There is no functional change in this
	patch.

	PHKL_13202:
	While running under heavy stress tests with reorg set,
	fsck failed because the iemap on disk was incorrect.
	Below is the output of fsck (\ indicates a continued
	line).

	diagck: number of output lines != number of lines in \
	input pattern
	---EXPECTED---
	pass0 - checking structural files
	pass1 - checking inode sanity and blocks
	pass2 - checking directory linkage
	pass3 - checking reference counts
	pass4 - checking resource maps
	OK to clear log? (ynq)n
	sanity checks/updates have not been completed - restart? \
	(ynq)n
	---GOT---
	pass0 - checking structural files
	pass1 - checking inode sanity and blocks
	pass2 - checking directory linkage
	pass3 - checking reference counts
	pass4 - checking resource mapsmaps
	fileset 999 au 0 iemap incorrect - fix (ynq)n
	sanity checks/updates have not been completed - restart? \
	(ynq)n
	fileset 999 iau 0 summary incorrect - fix? (ynq)n
	fileset 999 iau 1 summary incorrect - fix? (ynq)n
	OK to clear log? (ynq)n
	sanity checks/updates have not been completed - restart? \
	(ynq)n
	bin/testit : Failed to full fsck cleanly

	On Looking at the disk iemap was in byte 844 from the
	start of iemap and the value was 0x20. None of the inodes
	in that range had eopflags set on them. This occured
	pretty early this time in 3rd cycle itself and stress
	tests had run for just 3 hours.

Defect Description:
	PHKL_14763:
	None

	PHKL_13202:
	This bug is due to vx_imapclone not handling iemaps
	correctly.  In that code path where we are undoing the
	transactions on the cloned buffer, we have a check where we
	don't perform any undo if the type is not VX_IACLR.  For
	imaps, this is the correct thing to do, but for iemaps we
	should turn off the bit already set by the transaction.
	Since we don't turn off this bit, it gets pushed to disk as
	part of clonning of the bitmap, and hence, we see the
	problem.

SR:
	4701374546

Patch Files:
	
	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libvxfs_base.a(vx_ialloc.o)

	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libvxfs_base.a(vx_ialloc.o)

what(1) Output:
	
	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libvxfs_base.a(vx_ialloc.o):
		vx_ialloc.c $Date: 1998/04/08 14:39:16 $Revision: r1
			1ros/2 PATCH_11.00 (PHKL_14763)

	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libvxfs_base.a(vx_ialloc.o):
		vx_ialloc.c $Date: 1998/04/08 14:39:16 $Revision: r1
			1ros/2 PATCH_11.00 (PHKL_14763)

cksum(1) Output:
	
	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	1538274972 10464 /usr/conf/lib/libvxfs_base.a(vx_ialloc.o)

	JournalFS.VXFS-BASE-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	57227199 21224 /usr/conf/lib/libvxfs_base.a(vx_ialloc.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_13202 

Equivalent Patches: None

Patch Package Size: 60 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_14763

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_14763.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_14763.  If you do not wish to retain a
	copy of the original software, use the patch_save_files option:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -x patch_save_files=false -s /tmp/PHKL_14763.depot

	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 PHKL_14763.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_14763.depot

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

		dd if=/tmp/PHKL_14763.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None