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feat(vm_image_util): use bind mounts for pxe oem

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solid cleanup idea from marineam to use bind mounts instead of copying
to generate the desired root layout.
This commit is contained in:
Brandon Philips 2013-09-09 17:47:10 -07:00
parent f3413b473d
commit 2605c6ca95
1 changed files with 9 additions and 12 deletions
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21
build_library/vm_image_util.sh
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@ -366,30 +366,27 @@ _write_dir_to_cpio() {
_write_squashfs_root() {
local cpio_target="$1"
local root_mnt="${VM_TMP_DIR}/rootfs"
local root_build="${VM_TMP_DIR}/rootbuild"
local oem_mnt="${VM_TMP_DIR}/oem"
local dst_dir=$(_dst_dir)
local vmlinuz_name="$(_dst_name ".vmlinuz")"
mkdir -p "${root_mnt}"
mkdir -p "${root_build}"
mkdir -p "${cpio_target}"
# Roll the rootfs into the build dir
sudo mount -o loop,ro "${TEMP_ROOTFS}" "${root_mnt}"
sudo cp -Ra "${root_mnt}"/. "${root_build}"
cp "${root_mnt}"/boot/vmlinuz "${dst_dir}/${vmlinuz_name}"
sudo umount "${root_mnt}"
# Roll the OEM into the build dir
local oem_mnt="${VM_TMP_DIR}/oem"
sudo cp -Ra "${oem_mnt}" "${root_build}"
sudo rm -R "${VM_TMP_DIR}/oem"
sudo mount --bind "${oem_mnt}"/usr/share/oem "${root_mnt}"/usr/share/oem
# Build the squashfs
sudo mksquashfs "${root_build}" "${cpio_target}"/newroot.squashfs
ls -la ${cpio_target}
sudo mksquashfs "${root_mnt}" "${cpio_target}"/newroot.squashfs
sudo rm -rf "${root_mnt}" "${root_build}"
cp "${root_mnt}"/boot/vmlinuz "${dst_dir}/${vmlinuz_name}"
sudo umount "${root_mnt}"/usr/share/oem
sudo umount "${root_mnt}"
sudo rm -rf "${root_mnt}"
}
# If a config format is defined write it!