cmd/stmsboot/stmsboot.sh

	stmsboot.sh 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]
#
# CDDL HEADER END
#
#
# Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident  "%Z%%M% %I% %E% SMI"

PATH=/usr/bin:/usr/sbin:$PATH; export PATH
STMSBOOTUTIL=/lib/mpxio/stmsboot_util
STMSMETHODSCRIPT=/lib/svc/method/mpxio-upgrade
STMSINSTANCE=platform/sun4u/mpxio-upgrade:default
FPCONF=/kernel/drv/fp.conf
TMPFPCONF=/var/run/tmp.fp.conf.$$
VFSTAB=/etc/vfstab
SAVEDIR=/etc/mpxio
RECOVERFILE=$SAVEDIR/recover_instructions
SVCCFG_RECOVERY=$SAVEDIR/svccfg_recover
USAGE=`gettext "Usage: stmsboot -e | -d | -u | -L | -l controller_number"`

#
# Copy all entries (including comments) from source driver.conf to destination
# driver.conf except those entries which contain mpxio-disable property.
# Take into consideration entries that spawn more than one line.
#
# $1    source driver.conf file
# $2    destination driver.conf file
#
# Returns 0 on success, non zero on failure.
#
delete_mpxio_disable_entries()
{
    sed '
        /^[     ]*#/{ p
                  d
                }
        s/[     ]*$//
        /^$/{ p
              d
            }
        /mpxio-disable[     ]*=.*;$/d
        /;$/{ p
              d
            }
        :rdnext
        N
        s/[     ]*$//
        /[^;]$/b rdnext
        /mpxio-disable[     ]*=/d' $1 > $2

    return $?
}

#
# backup the last saved copy of the specified files.
# $*    files to backup
#
backup_lastsaved()
{
    for file in $*
    do
        file=`basename $file`
        if [ -f $SAVEDIR/$file ]; then
            mv $SAVEDIR/$file $SAVEDIR/${file}.old
        fi
    done
}

#
# build recover instructions
#
# $1    1 to include boot script in the instructions
#   0 otherwise
#
build_recover()
{
    gettext "Instructions to recover your previous STMS configuration (if in case the system does not boot):\n\n" > $RECOVERFILE
    echo "\tboot net \c"  >> $RECOVERFILE
    gettext "(or from a cd/dvd/another disk)\n" >> $RECOVERFILE
    echo "\tfsck <your-root-device>" >> $RECOVERFILE
    echo "\tmount <your-root-device> /mnt" >> $RECOVERFILE

    if [ "x$cmd" = xupdate ]; then
        gettext "\tUndo the modifications you made to STMS configuration.\n\tFor example undo any changes you made to " >> $RECOVERFILE
        echo "/mnt$FPCONF." >> $RECOVERFILE
    else
        echo "\tcp /mnt${SAVEDIR}/fp.conf /mnt$FPCONF" >> $RECOVERFILE
    fi

    if [ $1 -eq 1 ]; then
        echo "\tcp /mnt${SAVEDIR}/vfstab /mnt$VFSTAB" >> $RECOVERFILE

        echo "repository /mnt/etc/svc/repository.db" > $SVCCFG_RECOVERY
        echo "select $STMSINSTANCE" >> $SVCCFG_RECOVERY
        echo "setprop general/enabled=false" >> $SVCCFG_RECOVERY
        echo "exit" >> $SVCCFG_RECOVERY

        echo "\t/usr/sbin/svccfg -f /mnt$SVCCFG_RECOVERY" >> $RECOVERFILE
    fi

    rootdisk=`mount | grep "/ on " | cut -f 3 -d " "`
    echo "\tumount /mnt\n\treboot\n\n${rootdisk} \c" >> $RECOVERFILE
    gettext "was your root device,\nbut it could be named differently after you boot net.\n" >> $RECOVERFILE
}

#
# Arrange for /etc/vfstab and dump configuration to be updated
# during the next reboot. If the cmd is "enable" or "disable", copy
# $TMPFPCONF to $FPCONF.
#
# Returns 0 on success, 1 on failure.
#
update_sysfiles()
{
    gettext "WARNING: This operation will require a reboot.\nDo you want to continue ? [y/n] (default: y) "
    read response

    if [ "x$response" != x -a "x$response" != xy -a \
        "x$response" != xY ]; then
        rm -f $TMPFPCONF
        return 0
    fi

    need_bootscript=1
    if [ "x$cmd" = xenable -o "x$cmd" = xdisable ]; then
        cp $FPCONF $SAVEDIR
        cp $TMPFPCONF $FPCONF
        rm -f $TMPFPCONF

        #
        # there is no need to update the system files in the following
        # cases:
        # - we are enabling mpxio and the system has no configured
        #   disks accessible by phci paths.
        # - we are disabling mpxio and the system has no configured
        #   disks accessible by vhci paths.
        #
        if [ "x$cmd" = xenable ]; then
            ls -l /dev/dsk/*s2 2> /dev/null | \
                egrep -s "/fp@.*/ssd@.*"
        else
            ls -l /dev/dsk/*s2 2> /dev/null | \
                egrep -s "/scsi_vhci.*/ssd@.*"
        fi

        if [ $? -ne 0 ]; then
            need_bootscript=0
        fi
    fi

    if [ $need_bootscript -eq 1 ]; then
        #
        # Enable the mpxio-upgrade service, but don't run it now.
        # The service will run during the next reboot and will do
        # the actual job of modifying the system files.
        #
        svcadm disable -t $STMSINSTANCE
        svccfg -f - << EOF
select $STMSINSTANCE
setprop general/enabled = true
EOF
    fi

    build_recover $need_bootscript

    gettext "The changes will come into effect after rebooting the system.\nReboot the system now ? [y/n] (default: y) "
    read response

    if [ "x$response" = x -o "x$response" = xy -o \
        "x$response" = xY ]; then
        reboot
    fi

    return 0
}

#
# Enable or disable mpxio as specified by the cmd.
# Returns 0 on success, 1 on failure.
#
configure_mpxio()
{
    if [ "x$cmd" = xenable ]; then
        propval=no
        msg=`gettext "STMS already enabled."`
    else
        propval=yes
        msg=`gettext "STMS already disabled."`
    fi

    if delete_mpxio_disable_entries $FPCONF $TMPFPCONF; then
        echo "mpxio-disable=\"${propval}\";" >> $TMPFPCONF
        if diff -b $FPCONF $TMPFPCONF > /dev/null; then
            rm -f $TMPFPCONF
            echo "$msg"
            return 0
        fi
        update_sysfiles
        return $?
    else
        rm -f $TMPFPCONF
        gettext "failed to update " 1>&2
        echo "$FPCONF." 1>&2
        gettext "No changes were made to your STMS configuration.\n" 1>&2
        return 1
    fi
}

setcmd()
{
    if [ "x$cmd" = xnone ]; then
        cmd=$1
    else
        echo "$USAGE" 1>&2
        exit 2
    fi
}

cmd=none

# process options
while getopts eduLl: c
do
    case $c in
    e)  setcmd enable;;
    d)  setcmd disable;;
    u)  setcmd update;;
    L)  setcmd listall;;
    l)  setcmd list
        controller=$OPTARG;;
    \?) echo "$USAGE" 1>&2
        exit 2;;
    esac
done

if [ "x$cmd" = xnone ]; then
    echo "$USAGE" 1>&2
    exit 2
fi

set `id`
if [ "$1" != "uid=0(root)" ]; then
    gettext "You must be super-user to run this script.\n" 1>&2
    exit 1
fi

# just a sanity check
if [ ! -f $STMSBOOTUTIL -o ! -f $STMSMETHODSCRIPT ]; then
    fmt=`gettext "Can't find %s and/or %s"`
    printf "$fmt\n" "$STMSBOOTUTIL" "$STMSMETHODSCRIPT" 1>&2
    exit 1
fi

svcprop -q $STMSINSTANCE
if [ $? -ne 0 ]; then
    fmt=`gettext "Can't find %s service"`
    printf "$fmt\n" "$STMSINSTANCE" 1>&2
    exit 1
fi

if [ "x$cmd" = xenable -o "x$cmd" = xdisable -o "x$cmd" = xupdate ]; then
    #
    # The bootup script doesn't work on cache-only-clients as the script
    # is executed before the plumbing for cachfs mounting of root is done.
    #
    if mount -v | egrep -s " on / type (nfs|cachefs) "; then
        gettext "This command option is not supported on systems with nfs or cachefs mounted root filesystem.\n" 1>&2
        exit 1
    fi

    if [ -d $SAVEDIR ]; then
        #
        # keep a copy of the last saved files, useful for manual
        # recovery in case of a problem.
        #
        backup_lastsaved $FPCONF $VFSTAB
    else
        mkdir $SAVEDIR
    fi

fi

if [ "x$cmd" = xenable -o "x$cmd" = xdisable ]; then
    configure_mpxio $cmd
elif [ "x$cmd" = xupdate ]; then
    update_sysfiles
elif [ "x$cmd" = xlist ]; then
    $STMSBOOTUTIL -l $controller
else
    $STMSBOOTUTIL -L
fi

exit $?