Patch Name: PHKL_27357

Patch Description: s700_800 11.00 VxFS 3.3 hang due to unflushed transaction

Creation Date: 02/08/16

Post Date:  02/08/19

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

Products:
	JFS 3.3;

Filesets:
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_27357: HANG
		Processes hang when accessing VxFS 3.3 filesystem.

Category Tags:
	defect_repair general_release critical halts_system

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_27357

Symptoms:
	PHKL_27357:
	( SR:8606259981 CR:JAGae24300 )
	Processes may hang while trying to access a VxFS 3.3
	filesystem.  The system might not be totally hung,
	but it might become very slow.

	The kernel stack trace of a hung process will look
	similar to the following, and there will be no
	process in vx_tranflush():
	_sleep+0xa5c
	sleep_spinunlock+0x70
	vx_event_wait+0xc0
	vx_delay2+0x64
	vx_traninit+0x3d0
	vx_write_alloc+0xc8
	vx_write1+0x464
	vx_rdwr+0x1e4
	vno_rw+0x80
	write+0x108
	syscall+0x750

Defect Description:
	PHKL_27357:
	( SR:8606259981 CR:JAGae24300 )
	During the flushing of a transaction, a condition
	occurred such that the transaction flush needed to
	be retried, but was not.  Since the transaction was
	never flushed, the intent log fills up and access
	to the file system hangs.

	Resolution:
	Assure proper retry of flushing of transactions under
	all conditions.

SR:
	8606259981

Patch Files:
	
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_tran.o)

	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_tran.o)

what(1) Output:
	
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_tran.o):
		vx33_tran.c $Date: 2002/06/24 03:45:02 $Revision: r1
			1ros/2 PATCH_11.00 (PHKL_27357)

	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_tran.o):
		vx33_tran.c $Date: 2002/06/24 03:45:02 $Revision: r1
			1ros/2 PATCH_11.00 (PHKL_27357)

cksum(1) Output:
	
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP:
	4058636693 24392 /usr/conf/lib/libvxfs.a(vx33_tran.o)

	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP:
	3878996651 46856 /usr/conf/lib/libvxfs.a(vx33_tran.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches: None

Patch Package Size: 90 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_27357

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_27357.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_27357.  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 PHKL_27357.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_27357.depot

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

		dd if=/tmp/PHKL_27357.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None