3 # Copyright (C) 2011 GRNET S.A.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 # Save stderr to a file
27 add_cleanup rm "$stderr"
28 exec 2> >(tee -a "$stderr" >&2)
30 monitor_pipe=$(mktemp -u)
31 mkfifo -m 600 "$monitor_pipe"
32 add_cleanup rm -f "$monitor_pipe"
34 if [ -n "$PROGRESS_MONITOR" ]; then
35 { sleep 1; $PROGRESS_MONITOR "$instance" < "$monitor_pipe" ; } &
38 sed -u 's|^|MONITOR MSG: |g' < "$monitor_pipe" &
42 # Create file descriptor to monitor_pipe
43 exec {MONITOR_FD}>${monitor_pipe}
44 add_cleanup close_fd ${MONITOR_FD}
46 # Ignore sigpipe signals. If progress monitor is dead and snf-image-host tries
47 # to output something to the opened pipe, then a sigpipe will be raised. If we
48 # do not catch this, the program will terminate.
51 trap "report_and_cleanup $(printf "%q" "$stderr") ${MONITOR_FD}" EXIT
57 image_file="$IMAGE_DIR/$(echo "$IMAGE_NAME" | sed 's/^file://').$IMAGE_TYPE"
58 if [ ! -e "$image_file" ]; then
59 log_error "Image file \`$image_file' does not exit."
62 image_size="$(stat -L -c %s "$image_file")"
65 image_cmd="$CURL $(printf "%q" "$IMAGE_NAME") 2> /dev/null"
66 image_size=$($CURL -sI "$IMAGE_NAME" | grep ^Content-Length: | cut -d" " -f2)
69 cmd_args="--db $(printf "%q" "${PITHOS_DB}") \
70 --data $(printf "%q" "${PITHOS_DATA}") \
71 $(printf "%q" "${IMAGE_NAME}")"
72 image_cmd="./pithcat $cmd_args"
73 image_size=$(./pithcat -s $cmd_args)
77 # If the target device is not a real block device we'll first losetup it.
78 # This is needed for file disks.
79 if [ ! -b "$blockdev" ]; then
80 original_blockdev="$blockdev"
81 blockdev=$($LOSETUP -sf "$blockdev")
82 add_cleanup $LOSETUP -d "$blockdev"
88 format_disk0 "$blockdev" "$IMAGE_TYPE"
91 $INSTALL_MBR -p 1 -i n "$blockdev"
93 target="$(map_disk0 "$blockdev")-1" #the root device
94 add_cleanup unmap_disk0 "$blockdev"
95 snf_export_PROPERTY_ROOT_PARTITION=1
96 if [ "$IMAGE_TYPE" = "ntfsdump" ]; then
97 snf_export_PROPERTY_OSFAMILY="windows"
99 snf_export_PROPERTY_OSFAMILY="linux"
106 log_error "Unknown Image format: \`$IMAGE_TYPE'"
111 monitor="./copy-monitor.py -o $MONITOR_FD -r $image_size"
112 if [ "$BACKEND_TYPE" = "local" ]; then
113 # dd the dump to its new home :-)
114 # Deploying an image file on a target block device is a streaming copy
115 # operation. Enable the direct I/O flag on the output fd to avoid polluting
116 # the host cache with useless data.
117 $monitor dd bs=4M if="$image_file" of="$target" oflag=direct
119 $image_cmd | $monitor dd bs=4M of="$target" oflag=direct
122 # Create a floppy image
123 floppy=$(mktemp --tmpdir floppy.XXXXXX)
124 add_cleanup rm "$floppy"
126 snf_export_DEV=/dev/vda
127 snf_export_TYPE="$IMG_FORMAT"
128 snf_export_PASSWORD="$IMG_PASSWD"
129 snf_export_HOSTNAME="$instance"
130 if [ -n "$IMG_PROPERTIES" ]; then
131 snf_export_PROPERTIES="$IMG_PROPERTIES"
133 if [ -n "$IMG_PERSONALITY" ]; then
134 snf_export_PERSONALITY="$IMG_PERSONALITY"
137 create_floppy "$floppy"
139 # Invoke the helper vm to do the dirty job...
140 jail=$(mktemp -d --tmpdir tmpfsXXXXXXX)
141 add_cleanup rmdir "$jail"
143 mount tmpfs -t tmpfs "$jail" -o size=50M
144 add_cleanup umount "$jail"
146 result_file=$(mktemp --tmpdir="$jail" result.XXXXXX)
147 add_cleanup rm "$result_file"
149 snapshot=$(mktemp --tmpdir="$jail" helperXXXXXX.img)
150 add_cleanup rm "$snapshot"
152 "$QEMU_IMG" create -f qcow2 -b "$HELPER_IMG" "$snapshot"
154 echo "$(date +%Y:%m:%d-%H:%M:%S.%N) Starting helper VM..."
156 $TIMEOUT -k "$HELPER_HARD_TIMEOUT" "$HELPER_SOFT_TIMEOUT" \
157 kvm -runas "$HELPER_USER" -drive file="$snapshot" \
158 -drive file="$blockdev",format=raw,if=virtio,cache=none \
159 -boot c -serial stdio -serial "file:$(printf "%q" "$result_file")" \
160 -serial file:>(./helper-monitor.py ${MONITOR_FD}) \
161 -fda "$floppy" -vga none -nographic -parallel none -monitor null \
162 -kernel "$HELPER_KERNEL" -initrd "$HELPER_INITRD" \
163 -append "quiet ro root=/dev/sda1 console=ttyS0,9600n8 snf_image_activate_helper" \
164 2>&1 | sed -u 's|^|HELPER: |g'
167 if [ $rc -ne 0 ]; then
168 if [ $rc -eq 124 ]; then
169 log_error "Helper VM was terminated. Did not finish on time."
170 elif [ $rc -eq 137 ]; then # (128 + SIGKILL)
171 log_error "Helper VM was killed. Did not finish on time."
172 elif [ $rc -eq 141 ]; then # (128 + SIGPIPE)
173 log_error "Helper was killed by a SIGPIPE signal."
174 log_error "Maybe progress monitor has died unexpectedly."
175 elif [ $rc -eq 125 ]; then
176 log_error "timeout did not manage to run."
178 log_error "KVM returned an error (return code $rc)."
182 echo "$(date +%Y:%m:%d-%H:%M:%S.%N) Helper VM finished."
185 # Read the first line. This will remove \r and \n chars
186 result=$(sed 's|\r||g' "$result_file" | head -1)
188 if [ "x$result" != "xSUCCESS" ]; then
189 log_error "Helper VM did not return SUCCESS"
199 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :