Patch Name: PHKL_17675

Patch Description: s700 10.26 LOFS patch and process hang on inode

Creation Date: 99/07/01

Post Date:  99/08/17

Hardware Platforms - OS Releases:
	s700: 10.26

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_17675: HANG OTHER
		Processes may hang on a directory until system
		resources are used up.

		The behavior using lofs file systems is
		unpredictable if PHKL_17282 is installed
		because a partial lofs fix was delivered
		in this patch.

Path Name: /hp-ux_patches/s700/10.X/PHKL_17675

Symptoms:
	PHKL_17675:
	1. Port PHKL_17012 LOFS cumulative patch
	2. Processes hang waiting for inode to be released on a
	   directory. For example, ls -al will hang on a directory
	   and process can not be killed.

	(PHKL_17012)
	Various symptoms may be exhibited due to a partial fix
	being delivered to a previous patch.  One reported
	symptom includes getting a "Device Busy" error when
	trying to mount a file system a second time using lofs.
	The failure that caught this issue can be reproduced by
	doing
		mkfs /dir1 /dir2
		mount -F lofs /usr /dir1
		mount -F lofs /usr /dir2
	The result of the second mount will be "Device Busy".

Defect Description:
	PHKL_17675:
	1. The defect was caused by having only 2 of the 6 files
	   delivered into patches PHKL_1728[2,3] for various lofs
	   problems.  The problem is corrected by delivering all 6
	   of the files needed to correct lofs defects.
	2. In some error conditions, the vn_create() returns without
	   releasing vnode.

	Resolution:
	1. Port of 10.20 PHKL_17012
	2. Release vnode in all error conditions before returning
	   from vn_create().

SR:
	0000000000

Patch Files:
	/usr/conf/lib/libhp-ux.a(lo_subr.o)
	/usr/conf/lib/libhp-ux.a(lo_vfsops.o)
	/usr/conf/lib/libhp-ux.a(lo_vnops.o)
	/usr/conf/lib/libhp-ux.a(lo_vnsecops.o)
	/usr/conf/lib/libhp-ux.a(vfs.o)
	/usr/conf/lib/libhp-ux.a(vfs_vnode.o)

what(1) Output:
	/usr/conf/lib/libhp-ux.a(lo_subr.o):
		99/04/20 kern/lofs/lo_subr.c, hpux, hpux_10.26, ic5b
			z Revision 1.5 PATCH_10.26 (PHKL_17675)
	/usr/conf/lib/libhp-ux.a(lo_vfsops.o):
		99/04/20 kern/lofs/lo_vfsops.c, hpux, hpux_10.26, ic
			5bz Revision 1.5 PATCH_10.26 (PHKL_17675)
	/usr/conf/lib/libhp-ux.a(lo_vnops.o):
		99/04/20 kern/lofs/lo_vnops.c, hpux, hpux_10.26, ic5
			bz Revision 1.6 PATCH_10.26 (PHKL_17675)
	/usr/conf/lib/libhp-ux.a(lo_vnsecops.o):
		99/04/09 kern/lofs/lo_vnsecops.c, kernel, hpux_10.26
			, ic5bz Revision 1.2 PATCH_10.26 (PHKL_17675
			)
	/usr/conf/lib/libhp-ux.a(vfs.o):
		99/04/20 kern/sys/vfs.c, hpux, hpux_10.26, ic5bz Rev
			ision 1.8 PATCH_10.26 (PHKL_17675)
	/usr/conf/lib/libhp-ux.a(vfs_vnode.o):
		99/04/20 kern/sys/vfs_vnode.c, hpux, hpux_10.26, ic5
			bz Revision 1.10 PATCH_10.26 (PHKL_17675)

cksum(1) Output:
	2917189796 6272 /usr/conf/lib/libhp-ux.a(lo_subr.o)
	2942177279 4404 /usr/conf/lib/libhp-ux.a(lo_vfsops.o)
	902857364 8348 /usr/conf/lib/libhp-ux.a(lo_vnops.o)
	219294598 2628 /usr/conf/lib/libhp-ux.a(lo_vnsecops.o)
	1290408064 22340 /usr/conf/lib/libhp-ux.a(vfs.o)
	2293914647 9212 /usr/conf/lib/libhp-ux.a(vfs_vnode.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 10.26: PHKL_17282

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_17676:
	s800: 10.26

	PHKL_17012:
	s700: 10.20

	PHKL_17013:
	s800: 10.20

Patch Package Size: 110 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_17675

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_17675.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_17675.  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_17675.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_17675.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_17282.
	For successful installation, please ensure that PHKL_17282
	is in the same depot with this patch, or PHKL_17282 is
	already installed.