Patch Name: PHKL_17206

Patch Description: s700 10.20 Fix large buffer write gets VX_ERETRY on JFS

Creation Date: 98/12/15

Post Date:  99/01/04

Hardware Platforms - OS Releases:
	s700: 10.20

Products: N/A

Filesets:
	JournalFS.VXFS-BASE-KRN

Automatic Reboot?: Yes

Status: General Superseded

Critical: No

Path Name: /hp-ux_patches/s700/10.X/PHKL_17206

Symptoms:
	PHKL_17206:
	Writing a large mmaped region to a file on Advanced JFS
	gets return error VX_ERETRY (0xf001).

Defect Description:
	PHKL_17206:
	Advanced JFS initiates direct I/O for large buffer writes.
	When the direct I/O is unsuccessful with a return error
	VX_ERETRY, the code should retry the write using default
	I/O.  A bug in JFS write code misses the checking of
	VX_ERETRY and returns the error to the caller.

	While the symptom is seen only when Advanced JFS is
	installed, the fix is in the base JFS.

SR:
	1653285841

Patch Files:
	/usr/conf/lib/libvxfs_base.a(vx_rdwri.o)

what(1) Output:
	/usr/conf/lib/libvxfs_base.a(vx_rdwri.o):
		vx_rdwri.c $Date: 98/12/15 10:46:57 $ $Revision: 1.7
			.98.28 $ PATCH_10.20 (PHKL_17206)

cksum(1) Output:
	2084113200 35504 /usr/conf/lib/libvxfs_base.a(vx_rdwri.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 10.20: PHKL_16750

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_17207:
	s800: 10.20

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_17206

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_17206.depot

	5b. For a homogeneous NFS Diskless cluster run swcluster on the
	    server to install the patch on the server and the clients:

		swcluster -i -b

	    This will invoke swcluster in the interactive mode and
	    force all clients to be shut down.

	    WARNING: All cluster clients must be shut down prior to the
		     patch installation.  Installing the patch while the
		     clients are booted is unsupported and can lead to
		     serious problems.

	    The swcluster command will invoke an swinstall session in which
	    you must specify:

		alternate root path  -  default is /export/shared_root/OS_700
		source depot path    -  /tmp/PHKL_17206.depot

	    To complete the installation, select the patch by choosing
	    "Actions -> Match What Target Has" and then "Actions -> Install"
	    from the Menubar.

	5c. For a heterogeneous NFS Diskless cluster:

		- run swinstall on the server as in step 5a to install
		  the patch on the cluster server.

		- run swcluster on the server as in step 5b to install
		  the patch on the cluster clients.

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_17206.  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_17206.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_17206.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_16750 .
	For successful installation please insure that PHKL_16750
	is in the same depot with PHKL_17206, or PHKL_16750  is
	already installed.