Synnefo » Ganeti Instance Image

#!/bin/bash

# Copyright (C) 2010 Oregon State University

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

set -e

. common.sh

debug set -x

if [ "$IMAGE_TYPE" = "tarball" ] ; then

    IMAGE_FILE="${IMAGE_DIR}/${IMAGE_NAME}-${ARCH}.tar.gz"

elif [ "$IMAGE_TYPE" = "qemu" ] ; then

    IMAGE_FILE="${IMAGE_DIR}/${IMAGE_NAME}-${ARCH}.img"

elif [ "$IMAGE_TYPE" = "dump" ] ; then

    IMAGE_FILE="${IMAGE_DIR}/${IMAGE_NAME}-${ARCH}-root.dump"

fi

if [ "$CDINSTALL" = "no" ] ; then

    # If the target device is not a real block device we'll first losetup it.

    # This is needed for file disks.

    if [ ! -b $blockdev ]; then

      ORIGINAL_BLOCKDEV=$blockdev

      blockdev=$($LOSETUP -sf $blockdev)

      CLEANUP+=("$LOSETUP -d $blockdev")

    fi

    if [ ! -f "$IMAGE_FILE" ] ; then

      log_error "Can't find image file: $IMAGE_FILE"

      exit 1

    fi

    # If the image is tarball based, then we need to manually create the

    # volumes, filesystems, etc

    if [ "${IMAGE_TYPE}" = "tarball" -o "${IMAGE_TYPE}" = "dump" ] ; then

        # Create 3 partitions, /boot, swap, & /

        format_disk0 $blockdev

    elif [ "${IMAGE_TYPE}" = "qemu" ] ; then

        # need a recent version of qemu for this

        ${QEMU_IMG} convert ${IMAGE_FILE} -O host_device ${blockdev}

    fi

    filesystem_dev=$(map_disk0 $blockdev)

    CLEANUP+=("unmap_disk0 $blockdev")

    root_dev=$(map_partition $filesystem_dev root)

    boot_dev=$(map_partition $filesystem_dev boot)

    swap_dev=$(map_partition $filesystem_dev swap)

    if [ "${IMAGE_TYPE}" = "tarball" -o "${IMAGE_TYPE}" = "dump" ] ; then

        mkfs_disk0

        root_uuid="$($VOL_ID $root_dev)"

        [ -n "$boot_dev" ] && boot_uuid="$($VOL_ID $boot_dev)"

        [ -n "$swap_dev" ] && swap_uuid="$($VOL_ID $swap_dev)"

    fi

    TARGET=`mktemp -d` || exit 1

    CLEANUP+=("rmdir $TARGET")

    # mount filesystems

    mount_disk0 $TARGET

    if [ "${IMAGE_TYPE}" = "tarball" ] ; then

        # unpack image

        tar pzxf $IMAGE_FILE -C $TARGET

    elif [ "${IMAGE_TYPE}" = "dump" ] ; then

        local root_dump="${IMAGE_FILE}"

        ( cd ${TARGET}; restore -r -y -f ${root_dump} )

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

            boot_dump="${IMAGE_FILE/root.dump/boot.dump}"

            if [ ! -f "$boot_dump" ] ; then

              log_error "Can't find image file: $boot_dump"

              exit 1

            fi

            ( cd ${TARGET}/boot; restore -r -y -f ${boot_dump} )

        fi

    fi

    if [ "${IMAGE_TYPE}" = "tarball" -o "${IMAGE_TYPE}" = "dump" ] ; then

        setup_fstab $TARGET

    fi

    RUN_PARTS=`which run-parts`

    if [ -n "$RUN_PARTS" -a -n "$CUSTOMIZE_DIR" -a -d "$CUSTOMIZE_DIR" ]; then

      TARGET=$TARGET

      BLOCKDEV=$blockdev

      ROOT_DEV=$root_dev

      BOOT_DEV=$boot_dev

      export TARGET SUITE BLOCKDEV ROOT_DEV BOOT_DEV

      $RUN_PARTS $CUSTOMIZE_DIR

    fi

fi

# execute cleanups

cleanup

trap - EXIT

exit 0