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Resize stateful partition flag

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Added flag to resize stateful partition that we put onto the VM image.

Review URL: http://codereview.chromium.org/2964011
This commit is contained in:
Rahul Chaturvedi 2010-07-15 00:35:11 +05:30
parent 478a0d44a4
commit e770e16379
1 changed files with 27 additions and 0 deletions
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27
image_to_vm.sh
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@ -41,6 +41,8 @@ DEFINE_integer rootfs_partition_size 1024 \
"rootfs parition size in MBs." "rootfs parition size in MBs."
DEFINE_string state_image "" \ DEFINE_string state_image "" \
"Stateful partition image (defaults to creating new statful partition)" "Stateful partition image (defaults to creating new statful partition)"
DEFINE_integer statefulfs_size -1 \
"Stateful partition size in MBs."
DEFINE_boolean test_image "${FLAGS_FALSE}" \ DEFINE_boolean test_image "${FLAGS_FALSE}" \
"Copies normal image to chromiumos_test_image.bin, modifies it for test." "Copies normal image to chromiumos_test_image.bin, modifies it for test."
DEFINE_string to "" \ DEFINE_string to "" \
@ -137,6 +139,31 @@ TEMP_ROOTFS="${TEMP_DIR}"/part_3
TEMP_STATE="${TEMP_DIR}"/part_1 TEMP_STATE="${TEMP_DIR}"/part_1
if [ -n "${FLAGS_state_image}" ]; then if [ -n "${FLAGS_state_image}" ]; then
TEMP_STATE="${FLAGS_state_image}" TEMP_STATE="${FLAGS_state_image}"
else
# If we have a stateful fs size specified create a new state partition
# of the specified size.
if [ "${FLAGS_statefulfs_size}" -ne -1 ]; then
STATEFUL_SIZE_BYTES=$((1024 * 1024 * ${FLAGS_statefulfs_size}))
original_image_size=$(stat -c%s "${TEMP_STATE}")
if [ "${original_image_size}" -gt "${STATEFUL_SIZE_BYTES}" ]; then
die "Cannot resize stateful image to smaller than original. Exiting."
fi
echo "Resizing stateful partition to ${FLAGS_statefulfs_size}MB"
STATEFUL_LOOP_DEV=$(sudo losetup -f)
if [ -z "${STATEFUL_LOOP_DEV}" ]; then
die "No free loop device. Free up a loop device or reboot. Exiting."
fi
# Extend the original file size to the new size.
dd if=/dev/zero of="${TEMP_STATE}" bs=1 count=1 \
seek=$((STATEFUL_SIZE_BYTES - 1))
# Resize the partition.
sudo losetup "${STATEFUL_LOOP_DEV}" "${TEMP_STATE}"
sudo e2fsck -f "${STATEFUL_LOOP_DEV}"
sudo resize2fs "${STATEFUL_LOOP_DEV}"
sudo losetup -d "${STATEFUL_LOOP_DEV}"
fi
fi fi
TEMP_KERN="${TEMP_DIR}"/part_2 TEMP_KERN="${TEMP_DIR}"/part_2
TEMP_PMBR="${TEMP_DIR}"/pmbr TEMP_PMBR="${TEMP_DIR}"/pmbr