Cross Reference: /illumos-gate/usr/src/cmd/stmsboot/mpxio-upgrade

	mpxio-upgrade revision 7c478bd95313f5f23a4c958a745db2134aa03244
#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
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# CDDL HEADER END
#
#
# Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident  "%Z%%M% %I% %E% SMI"

. /lib/svc/share/fs_include.sh
. /lib/svc/share/net_include.sh

# Make sure that the essential libraries can be found.
LD_LIBRARY_PATH=/lib; export LD_LIBRARY_PATH
STMSBOOTUTIL=/lib/mpxio/stmsboot_util
FPCONF=/kernel/drv/fp.conf
SAVEDIR=/etc/mpxio
RECOVERFILE=$SAVEDIR/recover_instructions
DEVFSADM=/usr/sbin/devfsadm
METADEVADM=/usr/sbin/metadevadm
usrmounted=0

# map $special and $fsckdev
mpxio_mapdev()
{
    new_special=`$STMSBOOTUTIL -m $special`
    if [ $? -eq 0 ]; then
        special=$new_special
    fi

    new_fsckdev=`$STMSBOOTUTIL -m $fsckdev`
    if [ $? -eq 0 ]; then
        fsckdev=$new_fsckdev
    fi
}

mpxio_error()
{
    cecho "\nERROR: stmsboot: $1"
    #
    # display recovery instructions - the first call logs to the service
    # log and the second call displays on the console.
    #
    shcat $RECOVERFILE
    shcat $RECOVERFILE >/dev/msglog 2>&1
    cecho "These instructions were also logged to the file $RECOVERFILE\n"
}

#
# root ("/") is already mounted read only by the kernel.
# Remount the root read-write.
#
mpxio_mount_root()
{
    exec < $vfstab; readvfstab /
    mpxio_mapdev

    checkopt "llock" $mntopts
    mntopts='remount'
    [ -n "$otherops" ] && mntopts="${mntopts},${otherops}"
    /sbin/mount -m -F $fstype -o $mntopts $special $mountp \
>/dev/msglog 2>&1
}

#
# mount /usr read only
#
mpxio_mount_usr()
{
    exec < $vfstab; readvfstab "/usr"
    ret_val=0
    if [ -n "$mountp" ]; then
        mpxio_mapdev
        if [ "$fstype" = cachefs ]; then
            # Mount read-only without the cache.
            case "$mntopts" in
            *backfstype=nfs*)
                cfsbacktype=nfs
                ;;
            *backfstype=hsfs*)
                cfsbacktype=hsfs
                ;;
            *)
                cecho 'stmsboot: invalid vfstab entry for /usr'
                cfsbacktype=nfs
                ;;
            esac
            # see the comment below for /dev/null
            /sbin/mount -m -F $cfsbacktype -o ro $special $mountp \
>/dev/null 2>&1
            ret_val=$?
        else
            #
            # Must use -o largefiles here to ensure the read-only
            # mount does not fail as a result of having a large
            # file present on /usr.
            #
            if [ "x$mntopts" = x- ]; then
                mntopts='ro,largefiles'
            else
                checkopt largefiles $mntopts
                if [ "x$option" != xlargefiles ]; then
                    mntopts="largefiles,$mntopts"
                fi

                checkopt ro $mntopts
                if [ "x$option" != xro ]; then
                    mntopts="ro,$mntopts"
                fi

                #
                # Requesting logging on a read-only mount
                # causes errors to be displayed, so remove
                # "logging" from the list of options.
                #

                checkopt logging $mntopts
                if [ "x$option" = xlogging ]; then
                    mntopts="$otherops"
                fi
            fi

            #
            # In case of a manual restart of the service, mount
            # will emit messages if /usr is already mounted.
            # So redirect the output to /dev/null.
            #
            /sbin/mount -m -F $fstype -o $mntopts $special /usr \
>/dev/null 2>&1
            ret_val=$?
        fi
        if [ $ret_val -eq 0 ]; then
            usrmounted=1
        fi
    fi

    return $ret_val
}

# update system dump configuration
update_dumpconf()
{
    set -- `dumpadm -u 2>&1 | egrep 'cannot use /dev.* as dump device'`
    if [ "x$4" != x ]; then
        newname=`$STMSBOOTUTIL -M $4`
        if [ $? -eq 0 ]; then
            if dumpadm -d $newname > /dev/null; then
                cecho "stmsboot: dump configuration has been \
updated."
            else
                mpxio_error "failed to configure $newname as \
the dump device.\nold dump device name: $4"
                return 1
            fi
        fi
    fi
    return 0
}

#
# do the actual work
#
mpxio_main()
{
    #
    # NOTE: If the first attempt to run the service has failed due to an
    # expected error, users should be able to manually rerun the service.
    #
    # First mount /usr read only. This must be done to run
    # utilities such as fsck and devfsadm.
    # In the case of a manual rerun of the service, mounting of /usr here
    # fails if /usr already happens to be mounted. It is better that we
    # do not mount /usr if already mounted, but there seems to be no
    # apparent way to check whether /usr is mounted or not as we mount
    # /usr without making an entry into /etc/mnttab. So instead of
    # explicitly checking for mount failures, we just do a sanity check
    # by looking for some file (in this case devfsadm) in /usr.
    #
    mpxio_mount_usr
    if [ ! -s $DEVFSADM ]; then
        mpxio_error "failed to mount the /usr filesystem."
        return
    fi

    if mpxio_mount_root; then
        # create /dev links
        cecho "stmsboot: configuring devices"
        $DEVFSADM

        # update /etc/vfstab to reflect device name changes
        if $STMSBOOTUTIL -u >/dev/msglog 2>&1; then
            if update_dumpconf; then
                # update svm configuration to reflect new names
                if [ -s /kernel/drv/md.conf ] && \
                    [ -x $METADEVADM ]; then
                    $METADEVADM -r >/dev/msglog 2>&1
                fi
            fi
        else
            mpxio_error "failed to update /etc/vfstab."
        fi

        /usr/sbin/svcadm disable platform/sun4u/mpxio-upgrade

        /usr/sbin/reboot
    else
        mpxio_error "failed to mount the root filesystem."
        if [ $usrmounted -eq 1 ]; then
            /sbin/umount /usr
        fi
    fi
}

mpxio_main