Patch Name:  PHKL_7297

Patch Description: s700 9.01 Diskless packets cumulative patch

Creation Date: 96/04/15

Post Date:  96/04/24

Hardware Platforms - OS Releases:
        s700: 9.01

Products: N/A

Filesets:
        KERN-BLD

Automatic Reboot?: Yes

Status: General Release

Critical:
        Yes
        PHKL_7297: PANIC
        PHKL_6891: PANIC
        PHKL_6054: PANIC
        PHKL_5244: PANIC

Path Name:  /hp-ux_patches/s700/9.X/PHKL_7297

Symptoms:
        PHKL_7297:
        panic: recv_ack: bad serving_array state

        PHKL_6891:
        See PHKL_7297

        PHKL_6054:
        panic: close_serve: illegal fs type
        panic: stprmv: illegal fs type
        panic: getrmount: no mount

        PHKL_5244:
        If corrupted dux packets are not caught, the user could see
        panics such as close_serve: illegal fs type. This patch will
        not allow a bad packet to get through thus causing a resend
        and eliminating a system panic.

Defect Description:
        PHKL_7297:
        Request ID in a DUX packet is incremented sequentially from
        zero on each cnode.  If a serving_array entry on the server
        is used and freed for one client, then a second client
        acquires the same serving_array entry and uses the same
        request ID, then a duplicate ACK arrives from the first
        client (perhaps due to the use of smart routers), the server
        assumes the ACK is for the second client.  This patch also
        checks client information to reject the duplicate packet.

        PHKL_6054 could not be installed on a mixed cluster.  This
        patch does NOT verify checksums on packets originating from
        Series 300/400 clients, so it can be installed on a mixed
        cluster WITH THE UNDERSTANDING that communication between
        the server and Series 300/400 clients is not protected from
        corrupt packets with a checksum.

        PHKL_6891:
        See PHKL_7297

        PHKL_6054:
        Dux Packets are becoming corrupt during the transfer from
        client to server or server to client. Dux did not have a
        check sum capability to detect corrupt packets.

        PHKL_5244:
        There are various hardware and software that could be respon
        sible for causing a corrupt dux packet. However, by adding
        checksumming to dux, a corrupt packet can be caught and
        rejecting before causing a panic. The system will automatic
        ally resend the request so that nothing is lost.

SR:
        1653117689 5003243428 5003301424

Patch Files:  
        /etc/conf/libdskless.a(cluster.o)
        /etc/conf/libdskless.a(protocol.o)

what(1) Output:
        /etc/conf/libdskless.a(cluster.o):
                cluster.c     $Revision: 1.11.81.3 $ $Date: 96/03/04
                         15:11:00 $ PATCH_9.01 (PHKL_6891)
        /etc/conf/libdskless.a(protocol.o):
                protocol.c     $Revision: 1.13.81.7 $ $Date: 96/04/1
                        5 16:13:04 $ PATCH_9.01 (PHKL_7297)

sum(1) Output:
        19862 27 /etc/conf/libdskless.a(cluster.o)
        23962 69 /etc/conf/libdskless.a(protocol.o)

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:  
        PHKL_5244 PHKL_6054 PHKL_6891

Equivalent Patches:
        PHKL_7298:
        s700: 9.03 9.05 9.07

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. Copy the patch to your /tmp directory and unshar it:

                cd /tmp
                cp patch_source/PHKL_7297 .
                sh PHKL_7297

        3. Become root and run update:

                /etc/update [-r [kernel_gen_file]] -s \
                        /tmp/PHKL_7297.updt PHKL_7297

        Update moves the original software to
        /system/PHKL_7297/orig.  Keep this file to recover from any
        potential problems.  You should move the .text file to
        /system/PHKL_7297 for future reference.

        To put this patch on a magnetic tape and update from the
        tape drive, use dd:

                dd if=PHKL_7297.updt of=/dev/rmt/0m bs=2048

Special Installation Instructions:  None