Patch Name:  PHCO_9396

Patch Description: s700_800 10.20 fsck_vxfs(1M) fix for umountable file system

Creation Date: 96/12/05

Post Date:  96/12/11

Hardware Platforms - OS Releases:
        s700: 10.20
        s800: 10.20

Products: N/A

Filesets:
        JournalFS.VXFS-BASE-RUN

Automatic Reboot?: No

Status: General Superseded

Critical: No

Path Name:  /hp-ux_patches/s700_800/10.X/PHCO_9396

Symptoms:
        PHCO_9396:
        If a customer upgrades from 10.01 or 10.10 to 10.20, and
        tries to increase their VxFS file systems via SAM, the file
        system will not mount after completion of extending the
        volume and file system.  The typical apporach for SAM is:

        1) unmount the file system
        2) lvextend the volume
        3) extendfs the file system
        4) mount the file system

        The mount will always fail in this case.

Defect Description:
        PHCO_9396:
        The inode summary fields in the new allocation unit added by
        extendfs were not properly initialized. so whatever happened
        to be in the block wound up being treated as inode summary
        data.  The vxfs fsck command never detected this, and the
        mount command was failing in the kernel due to a file system
        validation error.  The problem is easily reproduced by
        executing the following:

        # lvcreate -L 40 -n testvol /dev/vg00
        # mkfs -F vxfs -oversion=2 /dev/vg00/rtestvol
        # mount -Fvxfs /dev/vg00/testvol /tmp_mnt
        # umount /tmp_mnt
        # lvextend -L 80 /dev/vg00/testvol
        # extendfs -Fvxfs /dev/v00/rtestvol
        # mount -Fvxfs /dev/vg00/testvol /tmp_mnt

SR:
        4701341479

Patch Files:
        /sbin/fs/vxfs/fsck

what(1) Output:
        /sbin/fs/vxfs/fsck:
                PATCH/10.20:PHCO_8764 libc.a_ID@@/main/r10dav/libc_d
                        av/libc_dav_cpe/2
                /ux/libc/libs/libc/archive_pa1/libc.a_ID
                Oct  2 1996 10:35:25
                PATCH_10_20MR: /opt/langtools/lib/crt0.o aggr.o attr
                        .o bmap.o dir.o extent.o extern.o fextop.o f
                        set.o inode.o links.o lwrite.o machdep.o mai
                        n.o olt.o readi.o replay.o subr.o subreplay.
                        o super.o 96/12/02

cksum(1) Output:
        3478665377 335872 /sbin/fs/vxfs/fsck

Patch Conflicts: None

Patch Dependencies:
        s700: 10.20: PHKL_9370
        s800: 10.20: PHKL_9371

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:  None

Equivalent Patches: None

Patch Package Size:  380 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 PHCO_9396

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

                swinstall -x autoreboot=true -x match_target=true \
                        -s /tmp/PHCO_9396.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/PHCO_9396.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/PHCO_9396.  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 PHCO_9396.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/PHCO_9396.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:  None