Synnefo » Ganeti Instance Image

get_os_type() {

    target=$1

    if [ -z "${target}" ] ; then

        log_error "target is not set in get_os_type"

        exit 1

    fi

    if [ -e ${target}/etc/redhat-release ] ; then

        OS_TYPE="redhat"

    elif [ -e ${target}/etc/debian_version ] ; then

        OS_TYPE="debian"

    elif [ -e ${target}/etc/gentoo-release ] ; then

        OS_TYPE="gentoo"

    elif [ -e ${target}/etc/SuSE-release ] ; then

        OS_TYPE="suse"

    fi

}

get_os() {

    target=$1

    if [ -z "${target}" ] ; then

        log_error "target is not set in get_os"

        exit 1

    fi

    if [ -e ${target}/etc/debian_version ] ; then

        if [ -e ${target}/etc/lsb-release ] ; then

            ID=$(grep ^DISTRIB_ID= ${target}/etc/lsb-release | cut -d= -f2)

        fi

        if [ "a$ID" = "aUbuntu" ] ; then

            OPERATING_SYSTEM="ubuntu"

        else

            OPERATING_SYSTEM="debian"

        fi

    elif [ -e ${target}/etc/gentoo-release ] ; then

        OPERATING_SYSTEM="gentoo"

    elif [ -e ${target}/etc/fedora-release ] ; then

        OPERATING_SYSTEM="fedora"

    elif [ -e ${target}/etc/redhat-release ] ; then

        if [ -n "$(grep -i centos ${target}/etc/redhat-release)" ] ; then

            OPERATING_SYSTEM="centos"

        else

            OPERATING_SYSTEM="redhat"

        fi

    fi

}

get_os_release() {

    target=$1

    if [ -z "${target}" ] ; then

        log_error "target is not set in get_os_release"

        exit 1

    fi

    if [ -e ${target}/etc/debian_version ] ; then

        OS_RELEASE="$(cat ${target}/etc/debian_version)"

    elif [ -e ${target}/etc/fedora-release ] ; then

        OS_RELEASE="$(cat ${target}/etc/fedora-release | awk '{print $3}')"

    elif [ -e ${$target}/etc/redhat-release ] ; then

        OS_RELEASE="$(cat ${target}/etc/redhat-release | awk '{print $3}')"

    fi

}

linux_format_disk0() {

    local sfdisk_cmd="$SFDISK -uM -H 255 -S 63 --quiet --Linux --DOS $1"

    if [  "${SWAP}" = "yes" -a "${BOOT}" = "yes" ] ; then

        # Create three partitions:

        # 1 - 100MB /boot, bootable

        # 2 - Size of Memory, swap

        # 3 - Rest

        $sfdisk_cmd > /dev/null <<EOF

,100,L,*

,${SWAP_SIZE},S

,,L

EOF

    elif [  "${SWAP}" = "no" -a "${BOOT}" = "yes" ] ; then

        # Create two partitions:

        # 1 - 100MB /boot, bootable

        # 2 - Rest

        $sfdisk_cmd > /dev/null <<EOF

,100,L,*

,,L

EOF

    elif [  "${SWAP}" = "yes" -a "${BOOT}" = "no" ] ; then

        # Create two partitions:

        # 1 - Size of Memory, swap

        # 2 - Rest

        $sfdisk_cmd > /dev/null <<EOF

,$SWAP_SIZE,S

,,L

EOF

    elif [  "${SWAP}" = "no" -a "${BOOT}" = "no" ] ; then

        # Create two partitions:

        # 1 - Whole

        $sfdisk_cmd > /dev/null <<EOF

,,L

EOF

    fi

}

linux_mkfs_disk0() {

    local mkfs="mkfs.${FILESYSTEM}"

   # Format /

    $mkfs -Fq -L / $root_dev > /dev/null

    # Format /boot

    if [ -n "${boot_dev}" ] ; then

        $mkfs -Fq -L /boot $boot_dev > /dev/null

    fi

    # Format swap

    if [ -n "${swap_dev}" ] ; then

        # Format swap

        mkswap -f $swap_dev > /dev/null

    fi

    # During reinstalls, ext4 needs a little time after a mkfs so add it here

    # and also run a sync to be sure.

    sync

    sleep 2

}

linux_setup_fstab() {

    local target=$1 fs=${FILESYSTEM}

    get_os_type $target

    cat > $target/etc/fstab <<EOF

# /etc/fstab: static file system information.

#

# <file system>   <mount point>   <type>  <options>       <dump>  <pass>

UUID=$root_uuid   /               $fs     defaults        0       1

proc              /proc           proc    defaults        0       0

EOF

if [ -n "$boot_dev" -a -n "$boot_uuid" ] ; then

    cat >> $target/etc/fstab <<EOF

UUID=$boot_uuid   /boot           $fs     defaults        1       2

EOF

fi

if [ -n "$swap_dev" -a -n "$swap_uuid" ] ; then

    cat >> $target/etc/fstab <<EOF

UUID=$swap_uuid   swap            swap    defaults        0       0

EOF

fi

# OS Specific fstabs

if [ "$OS_TYPE" = "redhat" ] ; then

    cat >> $target/etc/fstab <<EOF

tmpfs             /dev/shm        tmpfs   defaults        0       0

devpts            /dev/pts        devpts  gid=5,mode=620  0       0

sysfs             /sys            sysfs   defaults        0       0

EOF

fi

if [ "$OS_TYPE" = "gentoo" ] ; then

    cat >> $target/etc/fstab <<EOF

shm               /dev/shm        tmpfs   nodev,nosuid,noexec 0   0

EOF

fi

}

linux_setup_console() {

    local target=$1

    if [ -z "$target" ] ; then

        log_error "target not set for setup_console"

        exit 1

    fi

    # Upstart is on this system, so do this instead

    if [ -e ${target}/etc/event.d/tty1 ] ; then

        cat ${target}/etc/event.d/tty1 | sed -re 's/tty1/ttyS0/' \

            > ${target}/etc/event.d/ttyS0

        return

    fi

    # upstart in karmic and newer

    if [ -e ${target}/etc/init/tty1.conf ] ; then

        cat ${target}/etc/init/tty1.conf | \

        sed -re 's/^exec.*/exec \/sbin\/getty -L 115200 ttyS0 vt102/' \

            > ${target}/etc/init/ttyS0.conf

        sed -ie 's/tty1/ttyS0/g' ${target}/etc/init/ttyS0.conf

        return

    fi

    get_os $target

    case $OPERATING_SYSTEM in

        gentoo)

            sed -i -e 's/.*ttyS0.*/s0:12345:respawn:\/sbin\/agetty 115200 ttyS0 vt100/' \

                ${target}/etc/inittab

            ;;

        centos)

            echo "s0:12345:respawn:/sbin/agetty 115200 ttyS0 vt100" >> \

                ${target}/etc/inittab

            ;;

        debian|ubuntu)

            sed -i -e 's/.*T0.*/T0:23:respawn:\/sbin\/getty -L ttyS0 115200 vt100/' \

                ${target}/etc/inittab

            ;;

        *)

            echo "No support for your OS in instance-image, skipping..."

            ;;

    esac

}

linux_epilogue() {

    local target=$1

    if [ -z "$target" ] ; then

        log_error "target not set"

        exit 1

    fi

    get_os_type $target

    if [ "${OS_TYPE}" = "redhat" ]; then

        # we have to force a filesystem relabeling for SELinux after messing

        # around with the filesystem in redhat derived OSs

        echo "Enforce an automatic relabeling in the initial boot process..."

        touch $target/.autorelabel

    fi

}