root / snf-image-host / create @ fcae4e91
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#!/bin/bash |
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# Copyright (C) 2011 GRNET S.A. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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set -e |
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set -o pipefail |
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|
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. common.sh |
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|
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ganeti_os_main |
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|
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# Save stderr to a file |
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stderr=$(mktemp) |
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add_cleanup rm "$stderr" |
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exec 2> >(tee -a "$stderr" >&2) |
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|
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monitor_pipe=$(mktemp -u) |
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mkfifo -m 600 "$monitor_pipe" |
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add_cleanup rm -f "$monitor_pipe" |
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|
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if [ -n "$PROGRESS_MONITOR" ]; then |
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{ sleep 1; $PROGRESS_MONITOR "$instance" < "$monitor_pipe" ; } & |
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monitor_pid="$!" |
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else |
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sed -u 's|^|MONITOR MSG: |g' < "$monitor_pipe" & |
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monitor_pid="$!" |
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fi |
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|
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# Create file descriptor to monitor_pipe |
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exec {MONITOR_FD}>${monitor_pipe} |
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add_cleanup close_fd ${MONITOR_FD} |
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|
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# Ignore sigpipe signals. If progress monitor is dead and snf-image-host tries |
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# to output something to the opened pipe, then a sigpipe will be raised. If we |
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# do not catch this, the program will terminate. |
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trap "" SIGPIPE |
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|
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trap "report_and_cleanup $(printf "%q" "$stderr")" EXIT |
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|
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case $BACKEND_TYPE in |
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local) |
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image_file="$IMAGE_DIR/$(echo "$IMAGE_NAME" | sed 's/^file://').$IMAGE_TYPE" |
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if [ ! -e "$image_file" ]; then |
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log_error "Image file \`$image_file' does not exit." |
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exit 1 |
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fi |
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image_size="$(stat -L -c %s "$image_file")" |
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;; |
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null) |
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image_file=/dev/null |
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image_size=0 |
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# Treat it as local file from now on... |
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BACKEND_TYPE="local" |
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;; |
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network) |
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image_cmd="$CURL $(printf "%q" "$IMAGE_NAME") 2> /dev/null" |
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image_size=$($CURL -sI "$IMAGE_NAME" | grep ^Content-Length: | cut -d" " -f2) |
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;; |
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pithos) |
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cmd_args="--db $(printf "%q" "${PITHOS_DB}") \ |
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--data $(printf "%q" "${PITHOS_DATA}") \ |
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$(printf "%q" "${IMAGE_NAME}")" |
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image_cmd="./pithcat $cmd_args" |
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image_size=$(./pithcat -s $cmd_args) |
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;; |
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esac |
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|
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# If the target device is not a real block device we'll first losetup it. |
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# This is needed for file disks. |
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if [ ! -b "$blockdev" ]; then |
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original_blockdev="$blockdev" |
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blockdev=$($LOSETUP -sf "$blockdev") |
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add_cleanup $LOSETUP -d "$blockdev" |
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fi |
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|
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case "$IMAGE_TYPE" in |
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ntfsdump|extdump) |
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# Create partitions |
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format_disk0 "$blockdev" "$IMAGE_TYPE" |
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|
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# Install a new MBR |
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$INSTALL_MBR -p 1 -i n "$blockdev" |
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|
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target="$(map_disk0 "$blockdev")-1" #the root device |
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add_cleanup unmap_disk0 "$blockdev" |
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snf_export_PROPERTY_ROOT_PARTITION=1 |
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if [ "$IMAGE_TYPE" = "ntfsdump" ]; then |
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snf_export_PROPERTY_OSFAMILY="windows" |
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else |
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snf_export_PROPERTY_OSFAMILY="linux" |
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fi |
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;; |
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diskdump) |
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target="$blockdev" |
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;; |
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*) |
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log_error "Unknown Image format: \`$IMAGE_TYPE'" |
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exit 1 |
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;; |
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esac |
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|
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log_info "Starting image copy..." |
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monitor="./copy-monitor.py -o $MONITOR_FD -r $image_size" |
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if [ "$BACKEND_TYPE" = "local" ]; then |
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# dd the dump to its new home :-) |
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# Deploying an image file on a target block device is a streaming copy |
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# operation. Enable the direct I/O flag on the output fd to avoid polluting |
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# the host cache with useless data. |
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$monitor dd bs=4M if="$image_file" of="$target" oflag=direct |
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else |
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$image_cmd | $monitor dd bs=4M of="$target" oflag=direct |
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fi |
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log_info "Image copy finished." |
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|
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# Create a floppy image |
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floppy=$(mktemp --tmpdir floppy.XXXXXX) |
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add_cleanup rm "$floppy" |
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|
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snf_export_TYPE="$IMG_FORMAT" |
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snf_export_PASSWORD="$IMG_PASSWD" |
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snf_export_HOSTNAME="$instance" |
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if [ -n "$IMG_PROPERTIES" ]; then |
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snf_export_PROPERTIES="$IMG_PROPERTIES" |
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fi |
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if [ -n "$IMG_PERSONALITY" ]; then |
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snf_export_PERSONALITY="$IMG_PERSONALITY" |
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fi |
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|
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snf_export_DEV=$(get_img_dev) |
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|
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create_floppy "$floppy" |
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|
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launch_helper "$blockdev" "$floppy" |
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|
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log_info "Image customization finished successfully." |
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|
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# Execute cleanups |
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cleanup |
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trap - EXIT |
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|
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exit 0 |
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|
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# vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |