Add QCOW2 build mechanism (#349)
This commit is contained in:
Holger Pandel
GitHub
parent
21090519d8
commit
bf8c9f5383
13 changed files with 720 additions and 100 deletions
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@ -8,7 +8,7 @@ RUN apt-get -y update && \
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git vim parted \
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quilt coreutils qemu-user-static debootstrap zerofree zip dosfstools \
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bsdtar libcap2-bin rsync grep udev xz-utils curl xxd file kmod bc\
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binfmt-support ca-certificates \
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binfmt-support ca-certificates qemu-utils kpartx \
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&& rm -rf /var/lib/apt/lists/*
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COPY . /pi-gen/
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91
README.md
91
README.md
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@ -14,7 +14,8 @@ To install the required dependencies for `pi-gen` you should run:
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```bash
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apt-get install coreutils quilt parted qemu-user-static debootstrap zerofree zip \
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dosfstools bsdtar libcap2-bin grep rsync xz-utils file git curl bc
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dosfstools bsdtar libcap2-bin grep rsync xz-utils file git curl bc \
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qemu-utils kpartx
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```
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The file `depends` contains a list of tools needed. The format of this
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@ -36,6 +37,29 @@ The following environment variables are supported:
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but you should use something else for a customized version. Export files
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in stages may add suffixes to `IMG_NAME`.
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* `USE_QCOW2`(Default: `1` )
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Instead of using traditional way of building the rootfs of every stage in
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single subdirectories and copying over the previous one to the next one,
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qcow2 based virtual disks with backing images are used in every stage.
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This speeds up the build process and reduces overall space consumption
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significantly.
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<u>Additional optional parameters regarding qcow2 build:</u>
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* `BASE_QCOW2_SIZE` (Default: 12G)
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Size of the virtual qcow2 disk.
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Note: it will not actually use that much of space at once but defines the
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maximum size of the virtual disk. If you change the build process by adding
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a lot of bigger packages or additional build stages, it can be necessary to
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increase the value because the virtual disk can run out of space like a normal
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hard drive would.
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**CAUTION:** Although the qcow2 build mechanism will run fine inside Docker, it can happen
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that the network block device is not disconnected correctly after the Docker process has
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ended abnormally. In that case see [Disconnect an image if something went wrong](#Disconnect-an-image-if-something-went-wrong)
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* `RELEASE` (Default: buster)
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The release version to build images against. Valid values are jessie, stretch
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@ -340,6 +364,71 @@ follows:
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* Once you're happy with the image you can remove the SKIP_IMAGES files and
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export your image to test
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# Regarding Qcow2 image building
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### Get infos about the image in use
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If you issue the two commands shown in the example below in a second command shell while a build
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is running you can find out, which network block device is currently being used and which qcow2 image
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is bound to it.
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Example:
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```bash
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root@build-machine:~/$ lsblk | grep nbd
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nbd1 43:32 0 10G 0 disk
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├─nbd1p1 43:33 0 10G 0 part
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└─nbd1p1 253:0 0 10G 0 part
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root@build-machine:~/$ ps xa | grep qemu-nbd
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2392 pts/6 S+ 0:00 grep --color=auto qemu-nbd
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31294 ? Ssl 0:12 qemu-nbd --discard=unmap -c /dev/nbd1 image-stage4.qcow2
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```
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Here you can see, that the qcow2 image `image-stage4.qcow2` is currently connected to `/dev/nbd1` with
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the associated partition map `/dev/mapper/nbd1p1`. Don't worry that `lsblk` shows two entries. It is totally fine, because the device map is accessible via `/dev/mapper/nbd1p1` and also via `/dev/dm-0`. This is all part of the device mapper functionality of the kernel. See `dmsetup` for further information.
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### Mount a qcow2 image
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If you want to examine the content of a a single stage, you can simply mount the qcow2 image found in the `WORK_DIR` directory with the tool `./imagetool.sh`.
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See `./imagetool.sh -h` for further details on how to use it.
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### Disconnect an image if something went wrong
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It can happen, that your build stops in case of an error. Normally `./build.sh` should handle image disconnection appropriately, but in rare cases, especially during a Docker build, this may not work as expected. If that happens, starting a new build will fail and you may have to disconnect the image and/or device yourself.
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A typical message indicating that there are some orphaned device mapper entries is this:
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```
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Failed to set NBD socket
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Disconnect client, due to: Unexpected end-of-file before all bytes were read
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```
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If that happens go through the following steps:
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1. First, check if the image is somehow mounted to a directory entry and umount it as you would any other block device, like i.e. a hard disk or USB stick.
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2. Second, to disconnect an image from `qemu-nbd`, the QEMU Disk Network Block Device Server, issue the following command (be sure to change the device name to the one actually used):
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```bash
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sudo qemu-nbd -d /dev/nbd1
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```
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Note: if you use Docker build, normally no active `qemu-nbd` process exists anymore as it will be terminated when the Docker container stops.
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3. To disconnect a device partition map from the network block device, execute:
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```bash
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sudo kpartx -d /dev/nbd1
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or
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sudo ./imagetool.sh --cleanup
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```
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Note: The `imagetool.sh` command will cleanup any /dev/nbdX that is not connected to a running `qemu-nbd` daemon. Be careful if you use network block devices for other tasks utilizing NBDs on your build machine as well.
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Now you should be able to start a new build without running into troubles again. Most of the time, especially when using Docker build, you will only need no. 3 to get everything up and running again.
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# Troubleshooting
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## `64 Bit Systems`
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@ -1,4 +1,5 @@
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#!/bin/bash -eu
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DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
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BUILD_OPTS="$*"
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@ -87,6 +88,9 @@ ${DOCKER} build --build-arg BASE_IMAGE=${BASE_IMAGE} -t pi-gen "${DIR}"
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if [ "${CONTAINER_EXISTS}" != "" ]; then
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trap 'echo "got CTRL+C... please wait 5s" && ${DOCKER} stop -t 5 ${CONTAINER_NAME}_cont' SIGINT SIGTERM
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time ${DOCKER} run --rm --privileged \
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--cap-add=ALL \
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-v /dev:/dev \
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-v /lib/modules:/lib/modules \
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--volume "${CONFIG_FILE}":/config:ro \
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-e "GIT_HASH=${GIT_HASH}" \
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--volumes-from="${CONTAINER_NAME}" --name "${CONTAINER_NAME}_cont" \
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@ -98,6 +102,9 @@ if [ "${CONTAINER_EXISTS}" != "" ]; then
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else
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trap 'echo "got CTRL+C... please wait 5s" && ${DOCKER} stop -t 5 ${CONTAINER_NAME}' SIGINT SIGTERM
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time ${DOCKER} run --name "${CONTAINER_NAME}" --privileged \
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--cap-add=ALL \
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-v /dev:/dev \
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-v /lib/modules:/lib/modules \
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--volume "${CONFIG_FILE}":/config:ro \
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-e "GIT_HASH=${GIT_HASH}" \
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pi-gen \
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@ -106,6 +113,7 @@ else
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rsync -av work/*/build.log deploy/" &
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wait "$!"
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fi
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echo "copying results from deploy/"
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${DOCKER} cp "${CONTAINER_NAME}":/pi-gen/deploy .
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ls -lah deploy
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139
build.sh
139
build.sh
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@ -1,4 +1,5 @@
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#!/bin/bash -e
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# shellcheck disable=SC2119
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run_sub_stage()
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{
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@ -22,6 +23,11 @@ EOF
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on_chroot << EOF
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apt-get -o APT::Acquire::Retries=3 install --no-install-recommends -y $PACKAGES
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EOF
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if [ "${USE_QCOW2}" = "1" ]; then
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on_chroot << EOF
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apt-get clean
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EOF
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fi
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fi
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log "End ${SUB_STAGE_DIR}/${i}-packages-nr"
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fi
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@ -32,6 +38,11 @@ EOF
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on_chroot << EOF
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apt-get -o APT::Acquire::Retries=3 install -y $PACKAGES
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EOF
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if [ "${USE_QCOW2}" = "1" ]; then
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on_chroot << EOF
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apt-get clean
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EOF
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fi
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fi
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log "End ${SUB_STAGE_DIR}/${i}-packages"
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fi
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@ -82,17 +93,30 @@ EOF
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run_stage(){
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log "Begin ${STAGE_DIR}"
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STAGE="$(basename "${STAGE_DIR}")"
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pushd "${STAGE_DIR}" > /dev/null
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unmount "${WORK_DIR}/${STAGE}"
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STAGE_WORK_DIR="${WORK_DIR}/${STAGE}"
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ROOTFS_DIR="${STAGE_WORK_DIR}"/rootfs
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if [ "${USE_QCOW2}" = "1" ]; then
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if [ ! -f SKIP ]; then
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load_qimage
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fi
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else
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# make sure we are not umounting during export-image stage
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if [ "${USE_QCOW2}" = "0" ] && [ "${NO_PRERUN_QCOW2}" = "0" ]; then
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unmount "${WORK_DIR}/${STAGE}"
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fi
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fi
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if [ ! -f SKIP_IMAGES ]; then
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if [ -f "${STAGE_DIR}/EXPORT_IMAGE" ]; then
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EXPORT_DIRS="${EXPORT_DIRS} ${STAGE_DIR}"
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fi
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fi
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if [ ! -f SKIP ]; then
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if [ "${CLEAN}" = "1" ]; then
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if [ "${CLEAN}" = "1" ] && [ "${USE_QCOW2}" = "0" ] ; then
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if [ -d "${ROOTFS_DIR}" ]; then
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rm -rf "${ROOTFS_DIR}"
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fi
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@ -103,13 +127,21 @@ run_stage(){
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log "End ${STAGE_DIR}/prerun.sh"
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fi
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for SUB_STAGE_DIR in "${STAGE_DIR}"/*; do
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if [ -d "${SUB_STAGE_DIR}" ] &&
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[ ! -f "${SUB_STAGE_DIR}/SKIP" ]; then
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if [ -d "${SUB_STAGE_DIR}" ] && [ ! -f "${SUB_STAGE_DIR}/SKIP" ]; then
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run_sub_stage
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fi
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done
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fi
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if [ "${USE_QCOW2}" = "1" ]; then
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unload_qimage
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else
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# make sure we are not umounting during export-image stage
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if [ "${USE_QCOW2}" = "0" ] && [ "${NO_PRERUN_QCOW2}" = "0" ]; then
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unmount "${WORK_DIR}/${STAGE}"
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fi
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fi
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PREV_STAGE="${STAGE}"
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PREV_STAGE_DIR="${STAGE_DIR}"
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PREV_ROOTFS_DIR="${ROOTFS_DIR}"
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@ -143,6 +175,15 @@ do
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esac
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done
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term() {
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if [ "${USE_QCOW2}" = "1" ]; then
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log "Unloading image"
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unload_qimage
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fi
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}
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trap term EXIT INT TERM
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export PI_GEN=${PI_GEN:-pi-gen}
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export PI_GEN_REPO=${PI_GEN_REPO:-https://github.com/RPi-Distro/pi-gen}
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@ -211,6 +252,18 @@ source "${SCRIPT_DIR}/common"
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# shellcheck source=scripts/dependencies_check
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source "${SCRIPT_DIR}/dependencies_check"
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export NO_PRERUN_QCOW2="${NO_PRERUN_QCOW2:-1}"
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export USE_QCOW2="${USE_QCOW2:-1}"
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export BASE_QCOW2_SIZE=${BASE_QCOW2_SIZE:-12G}
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source "${SCRIPT_DIR}/qcow2_handling"
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if [ "${USE_QCOW2}" = "1" ]; then
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NO_PRERUN_QCOW2=1
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else
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NO_PRERUN_QCOW2=0
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fi
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export NO_PRERUN_QCOW2="${NO_PRERUN_QCOW2:-1}"
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dependencies_check "${BASE_DIR}/depends"
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#check username is valid
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@ -250,22 +303,98 @@ for EXPORT_DIR in ${EXPORT_DIRS}; do
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# shellcheck source=/dev/null
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source "${EXPORT_DIR}/EXPORT_IMAGE"
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EXPORT_ROOTFS_DIR=${WORK_DIR}/$(basename "${EXPORT_DIR}")/rootfs
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if [ "${USE_QCOW2}" = "1" ]; then
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USE_QCOW2=0
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EXPORT_NAME="${IMG_FILENAME}${IMG_SUFFIX}"
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echo "------------------------------------------------------------------------"
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echo "Running export stage for ${EXPORT_NAME}"
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rm -f "${WORK_DIR}/export-image/${EXPORT_NAME}.img" || true
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rm -f "${WORK_DIR}/export-image/${EXPORT_NAME}.qcow2" || true
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rm -f "${WORK_DIR}/${EXPORT_NAME}.img" || true
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rm -f "${WORK_DIR}/${EXPORT_NAME}.qcow2" || true
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EXPORT_STAGE=$(basename "${EXPORT_DIR}")
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for s in $STAGE_LIST; do
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TMP_LIST=${TMP_LIST:+$TMP_LIST }$(basename "${s}")
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done
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FIRST_STAGE=${TMP_LIST%% *}
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FIRST_IMAGE="image-${FIRST_STAGE}.qcow2"
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pushd "${WORK_DIR}" > /dev/null
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echo "Creating new base "${EXPORT_NAME}.qcow2" from ${FIRST_IMAGE}"
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cp "./${FIRST_IMAGE}" "${EXPORT_NAME}.qcow2"
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ARR=($TMP_LIST)
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# rebase stage images to new export base
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for CURR_STAGE in "${ARR[@]}"; do
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if [ "${CURR_STAGE}" = "${FIRST_STAGE}" ]; then
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PREV_IMG="${EXPORT_NAME}"
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continue
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fi
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echo "Rebasing image-${CURR_STAGE}.qcow2 onto ${PREV_IMG}.qcow2"
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qemu-img rebase -f qcow2 -u -b ${PREV_IMG}.qcow2 image-${CURR_STAGE}.qcow2
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if [ "${CURR_STAGE}" = "${EXPORT_STAGE}" ]; then
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break
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fi
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PREV_IMG="image-${CURR_STAGE}"
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done
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# commit current export stage into base export image
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echo "Committing image-${EXPORT_STAGE}.qcow2 to ${EXPORT_NAME}.qcow2"
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qemu-img commit -f qcow2 -p -b "${EXPORT_NAME}.qcow2" image-${EXPORT_STAGE}.qcow2
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# rebase stage images back to original first stage for easy re-run
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for CURR_STAGE in "${ARR[@]}"; do
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if [ "${CURR_STAGE}" = "${FIRST_STAGE}" ]; then
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PREV_IMG="image-${CURR_STAGE}"
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continue
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fi
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echo "Rebasing back image-${CURR_STAGE}.qcow2 onto ${PREV_IMG}.qcow2"
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qemu-img rebase -f qcow2 -u -b ${PREV_IMG}.qcow2 image-${CURR_STAGE}.qcow2
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if [ "${CURR_STAGE}" = "${EXPORT_STAGE}" ]; then
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break
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fi
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PREV_IMG="image-${CURR_STAGE}"
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done
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popd > /dev/null
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mkdir -p "${WORK_DIR}/export-image/rootfs"
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mv "${WORK_DIR}/${EXPORT_NAME}.qcow2" "${WORK_DIR}/export-image/"
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echo "Mounting image ${WORK_DIR}/export-image/${EXPORT_NAME}.qcow2 to rootfs ${WORK_DIR}/export-image/rootfs"
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mount_qimage "${WORK_DIR}/export-image/${EXPORT_NAME}.qcow2" "${WORK_DIR}/export-image/rootfs"
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CLEAN=0
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run_stage
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CLEAN=1
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USE_QCOW2=1
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else
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run_stage
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fi
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if [ "${USE_QEMU}" != "1" ]; then
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if [ -e "${EXPORT_DIR}/EXPORT_NOOBS" ]; then
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# shellcheck source=/dev/null
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source "${EXPORT_DIR}/EXPORT_NOOBS"
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STAGE_DIR="${BASE_DIR}/export-noobs"
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if [ "${USE_QCOW2}" = "1" ]; then
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USE_QCOW2=0
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run_stage
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USE_QCOW2=1
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else
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run_stage
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fi
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fi
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fi
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done
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if [ -x ${BASE_DIR}/postrun.sh ]; then
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if [ -x postrun.sh ]; then
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log "Begin postrun.sh"
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cd "${BASE_DIR}"
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./postrun.sh
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log "End postrun.sh"
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fi
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if [ "${USE_QCOW2}" = "1" ]; then
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unload_qimage
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fi
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log "End ${BASE_DIR}"
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2
depends
2
depends
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@ -17,3 +17,5 @@ file
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git
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lsmod:kmod
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bc
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qemu-nbd:qemu-utils
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kpartx
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@ -1,5 +1,7 @@
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#!/bin/bash -e
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if [ "${NO_PRERUN_QCOW2}" = "0" ]; then
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IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
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IMGID="$(dd if="${IMG_FILE}" skip=440 bs=1 count=4 2>/dev/null | xxd -e | cut -f 2 -d' ')"
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@ -11,3 +13,6 @@ sed -i "s/BOOTDEV/PARTUUID=${BOOT_PARTUUID}/" "${ROOTFS_DIR}/etc/fstab"
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sed -i "s/ROOTDEV/PARTUUID=${ROOT_PARTUUID}/" "${ROOTFS_DIR}/etc/fstab"
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sed -i "s/ROOTDEV/PARTUUID=${ROOT_PARTUUID}/" "${ROOTFS_DIR}/boot/cmdline.txt"
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fi
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@ -76,17 +76,24 @@ cp "$ROOTFS_DIR/etc/rpi-issue" "$INFO_FILE"
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dpkg -l --root "$ROOTFS_DIR"
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} >> "$INFO_FILE"
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mkdir -p "${DEPLOY_DIR}"
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rm -f "${DEPLOY_DIR}/${ZIP_FILENAME}${IMG_SUFFIX}.zip"
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rm -f "${DEPLOY_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
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mv "$INFO_FILE" "$DEPLOY_DIR/"
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if [ "${USE_QCOW2}" = "0" ] && [ "${NO_PRERUN_QCOW2}" = "0" ]; then
|
||||
ROOT_DEV="$(mount | grep "${ROOTFS_DIR} " | cut -f1 -d' ')"
|
||||
|
||||
unmount "${ROOTFS_DIR}"
|
||||
zerofree "${ROOT_DEV}"
|
||||
|
||||
unmount_image "${IMG_FILE}"
|
||||
|
||||
mkdir -p "${DEPLOY_DIR}"
|
||||
|
||||
rm -f "${DEPLOY_DIR}/${ZIP_FILENAME}${IMG_SUFFIX}.zip"
|
||||
rm -f "${DEPLOY_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
|
||||
else
|
||||
unload_qimage
|
||||
make_bootable_image "${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.qcow2" "$IMG_FILE"
|
||||
fi
|
||||
|
||||
if [ "${DEPLOY_ZIP}" == "1" ]; then
|
||||
pushd "${STAGE_WORK_DIR}" > /dev/null
|
||||
|
|
@ -94,7 +101,5 @@ if [ "${DEPLOY_ZIP}" == "1" ]; then
|
|||
"$(basename "${IMG_FILE}")"
|
||||
popd > /dev/null
|
||||
else
|
||||
cp "$IMG_FILE" "$DEPLOY_DIR"
|
||||
mv "$IMG_FILE" "$DEPLOY_DIR/"
|
||||
fi
|
||||
|
||||
cp "$INFO_FILE" "$DEPLOY_DIR"
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
#!/bin/bash -e
|
||||
|
||||
if [ "${NO_PRERUN_QCOW2}" = "0" ]; then
|
||||
IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
|
||||
|
||||
unmount_image "${IMG_FILE}"
|
||||
|
|
@ -83,3 +84,4 @@ mount -v "$BOOT_DEV" "${ROOTFS_DIR}/boot" -t vfat
|
|||
|
||||
rsync -aHAXx --exclude /var/cache/apt/archives --exclude /boot "${EXPORT_ROOTFS_DIR}/" "${ROOTFS_DIR}/"
|
||||
rsync -rtx "${EXPORT_ROOTFS_DIR}/boot/" "${ROOTFS_DIR}/boot/"
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -41,4 +41,8 @@ sed "${NOOBS_DIR}/os.json" -i -e "s|KERNEL|$(cat "${STAGE_WORK_DIR}/kernel_versi
|
|||
|
||||
sed "${NOOBS_DIR}/release_notes.txt" -i -e "s|UNRELEASED|${IMG_DATE}|"
|
||||
|
||||
if [ "${USE_QCOW2}" = "1" ]; then
|
||||
mv "${NOOBS_DIR}" "${DEPLOY_DIR}/"
|
||||
else
|
||||
cp -a "${NOOBS_DIR}" "${DEPLOY_DIR}/"
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -1,11 +1,15 @@
|
|||
#!/bin/bash -e
|
||||
|
||||
IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
|
||||
NOOBS_DIR="${STAGE_WORK_DIR}/${IMG_DATE}-${IMG_NAME}${IMG_SUFFIX}"
|
||||
unmount_image "${IMG_FILE}"
|
||||
|
||||
mkdir -p "${STAGE_WORK_DIR}"
|
||||
cp "${WORK_DIR}/export-image/${IMG_FILENAME}${IMG_SUFFIX}.img" "${STAGE_WORK_DIR}/"
|
||||
|
||||
if [ "${DEPLOY_ZIP}" == "1" ]; then
|
||||
IMG_FILE="${WORK_DIR}/export-image/${IMG_FILENAME}${IMG_SUFFIX}.img"
|
||||
else
|
||||
IMG_FILE="${DEPLOY_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
|
||||
fi
|
||||
|
||||
unmount_image "${IMG_FILE}"
|
||||
|
||||
rm -rf "${NOOBS_DIR}"
|
||||
|
||||
|
|
@ -60,4 +64,8 @@ bsdtar --numeric-owner --format gnutar -C "${STAGE_WORK_DIR}/rootfs/boot" -cpf -
|
|||
umount "${STAGE_WORK_DIR}/rootfs/boot"
|
||||
bsdtar --numeric-owner --format gnutar -C "${STAGE_WORK_DIR}/rootfs" --one-file-system -cpf - . | xz -T0 > "${NOOBS_DIR}/root.tar.xz"
|
||||
|
||||
if [ "${USE_QCOW2}" = "1" ]; then
|
||||
rm "$ROOTFS_DIR/etc/systemd/system/multi-user.target.wants/apply_noobs_os_config.service"
|
||||
fi
|
||||
|
||||
unmount_image "${IMG_FILE}"
|
||||
|
|
|
|||
112
imagetool.sh
Executable file
112
imagetool.sh
Executable file
|
|
@ -0,0 +1,112 @@
|
|||
#!/bin/bash
|
||||
|
||||
if [ "$(id -u)" != "0" ]; then
|
||||
echo "Please run as root" 1>&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
progname=$(basename $0)
|
||||
|
||||
function usage()
|
||||
{
|
||||
cat << HEREDOC
|
||||
|
||||
Usage:
|
||||
Mount Image : $progname [--mount] [--image-name <path to qcow2 image>] [--mount-point <mount point>]
|
||||
Umount Image: $progname [--umount] [--mount-point <mount point>]
|
||||
Cleanup NBD : $progname [--cleanup]
|
||||
|
||||
arguments:
|
||||
-h, --help show this help message and exit
|
||||
-c, --cleanup cleanup orphaned device mappings
|
||||
-m, --mount mount image
|
||||
-u, --umount umount image
|
||||
-i, --image-name path to qcow2 image
|
||||
-p, --mount-point mount point for image
|
||||
|
||||
This tool will use /dev/nbd1 as default for mounting an image. If you want to use another device, execute like this:
|
||||
NBD_DEV=/dev/nbd2 ./$progname --mount --image <your image> --mount-point <your path>
|
||||
|
||||
HEREDOC
|
||||
}
|
||||
|
||||
MOUNT=0
|
||||
UMOUNT=0
|
||||
IMAGE=""
|
||||
MOUNTPOINT=""
|
||||
|
||||
nbd_cleanup() {
|
||||
DEVS="$(lsblk | grep nbd | grep disk | cut -d" " -f1)"
|
||||
if [ ! -z "${DEVS}" ]; then
|
||||
for d in $DEVS; do
|
||||
if [ ! -z "${d}" ]; then
|
||||
QDEV="$(ps xa | grep $d | grep -v grep)"
|
||||
if [ -z "${QDEV}" ]; then
|
||||
kpartx -d /dev/$d && echo "Unconnected device map removed: /dev/$d"
|
||||
fi
|
||||
fi
|
||||
done
|
||||
fi
|
||||
}
|
||||
|
||||
# As long as there is at least one more argument, keep looping
|
||||
while [[ $# -gt 0 ]]; do
|
||||
key="$1"
|
||||
case "$key" in
|
||||
-h|--help)
|
||||
usage
|
||||
exit
|
||||
;;
|
||||
-c|--cleanup)
|
||||
nbd_cleanup
|
||||
;;
|
||||
-m|--mount)
|
||||
MOUNT=1
|
||||
;;
|
||||
-u|--umount)
|
||||
UMOUNT=1
|
||||
;;
|
||||
-i|--image-name)
|
||||
shift
|
||||
IMAGE="$1"
|
||||
;;
|
||||
-p|--mount-point)
|
||||
shift
|
||||
MOUNTPOINT="$1"
|
||||
;;
|
||||
*)
|
||||
echo "Unknown option '$key'"
|
||||
usage
|
||||
exit
|
||||
;;
|
||||
esac
|
||||
# Shift after checking all the cases to get the next option
|
||||
shift
|
||||
done
|
||||
|
||||
if [ "${MOUNT}" = "1" ] && [ "${UMOUNT}" = "1" ]; then
|
||||
usage
|
||||
echo "Concurrent mount options not possible."
|
||||
exit
|
||||
fi
|
||||
|
||||
if [ "${MOUNT}" = "1" ] && ([ -z "${IMAGE}" ] || [ -z "${MOUNTPOINT}" ]); then
|
||||
usage
|
||||
echo "Can not mount image. Image path and/or mount point missing."
|
||||
exit
|
||||
fi
|
||||
|
||||
if [ "${UMOUNT}" = "1" ] && [ -z "${MOUNTPOINT}" ]; then
|
||||
usage
|
||||
echo "Can not umount. Mount point parameter missing."
|
||||
exit
|
||||
fi
|
||||
|
||||
export NBD_DEV="${NBD_DEV:-/dev/nbd1}"
|
||||
source scripts/qcow2_handling
|
||||
|
||||
if [ "${MOUNT}" = "1" ]; then
|
||||
mount_qimage "${MOUNTPOINT}" "${IMAGE}"
|
||||
elif [ "${UMOUNT}" = "1" ]; then
|
||||
umount_qimage "${MOUNTPOINT}"
|
||||
fi
|
||||
256
scripts/qcow2_handling
Normal file
256
scripts/qcow2_handling
Normal file
|
|
@ -0,0 +1,256 @@
|
|||
#!/bin/bash
|
||||
|
||||
# QCOW2 Routines
|
||||
|
||||
export CURRENT_IMAGE
|
||||
export CURRENT_MOUNTPOINT
|
||||
|
||||
export NBD_DEV
|
||||
export MAP_BOOT_DEV
|
||||
export MAP_ROOT_DEV
|
||||
|
||||
# set in build.sh
|
||||
# should be fairly enough for the beginning
|
||||
# overwrite here by uncommenting following lines
|
||||
# BASE_QCOW2_SIZE=12G
|
||||
|
||||
# find and initialize free block device nodes
|
||||
init_nbd() {
|
||||
modprobe nbd max_part=16
|
||||
if [ -z "${NBD_DEV}" ]; then
|
||||
for x in /sys/class/block/nbd* ; do
|
||||
S=`cat $x/size`
|
||||
if [ "$S" == "0" ] ; then
|
||||
NBD_DEV=/dev/$(basename $x)
|
||||
MAP_BOOT_DEV=/dev/mapper/$(basename $x)p1
|
||||
MAP_ROOT_DEV=/dev/mapper/$(basename $x)p2
|
||||
break
|
||||
fi
|
||||
done
|
||||
fi
|
||||
}
|
||||
export -f init_nbd
|
||||
|
||||
# connect image to block device
|
||||
connect_blkdev() {
|
||||
init_nbd
|
||||
qemu-nbd --discard=unmap -c $NBD_DEV "$1"
|
||||
sync
|
||||
kpartx -a $NBD_DEV
|
||||
sync
|
||||
CURRENT_IMAGE="$1"
|
||||
}
|
||||
export -f connect_blkdev
|
||||
|
||||
# disconnect image from block device
|
||||
disconnect_blkdev() {
|
||||
kpartx -d $NBD_DEV
|
||||
qemu-nbd -d $NBD_DEV
|
||||
NBD_DEV=
|
||||
MAP_BOOT_DEV=
|
||||
MAP_ROOT_DEV=
|
||||
CURRENT_IMAGE=
|
||||
}
|
||||
export -f disconnect_blkdev
|
||||
|
||||
# mount qcow2 image: mount_image <image file> <mountpoint>
|
||||
mount_qimage() {
|
||||
connect_blkdev "$1"
|
||||
mount -v -t ext4 $MAP_ROOT_DEV "$2"
|
||||
mkdir -p "${ROOTFS_DIR}/boot"
|
||||
mount -v -t vfat $MAP_BOOT_DEV "$2/boot"
|
||||
CURRENT_MOUNTPOINT="$2"
|
||||
}
|
||||
export -f mount_qimage
|
||||
|
||||
# umount qcow2 image: umount_image <current mountpoint>
|
||||
umount_qimage() {
|
||||
sync
|
||||
#umount "$1/boot"
|
||||
while mount | grep -q "$1"; do
|
||||
local LOCS
|
||||
LOCS=$(mount | grep "$1" | cut -f 3 -d ' ' | sort -r)
|
||||
for loc in $LOCS; do
|
||||
echo "$loc"
|
||||
while mountpoint -q "$loc" && ! umount "$loc"; do
|
||||
sleep 0.1
|
||||
done
|
||||
done
|
||||
done
|
||||
CURRENT_MOUNTPOINT=
|
||||
disconnect_blkdev
|
||||
}
|
||||
export -f umount_qimage
|
||||
|
||||
# create base image / backing image / mount image
|
||||
load_qimage() {
|
||||
if [ -z "${CURRENT_MOUNTPOINT}" ]; then
|
||||
if [ ! -d "${ROOTFS_DIR}" ]; then
|
||||
mkdir -p "${ROOTFS_DIR}";
|
||||
fi
|
||||
|
||||
if [ "${CLEAN}" = "1" ] && [ -f "${WORK_DIR}/image-${STAGE}.qcow2" ]; then
|
||||
rm -f "${WORK_DIR}/image-${STAGE}.qcow2";
|
||||
fi
|
||||
|
||||
if [ ! -f "${WORK_DIR}/image-${STAGE}.qcow2" ]; then
|
||||
pushd ${WORK_DIR} > /dev/null
|
||||
init_nbd
|
||||
if [ -z "${PREV_STAGE}" ]; then
|
||||
echo "Creating base image: image-${STAGE}.qcow2"
|
||||
# -o preallocation=falloc
|
||||
qemu-img create -f qcow2 image-${STAGE}.qcow2 $BASE_QCOW2_SIZE
|
||||
sync
|
||||
qemu-nbd --discard=unmap -c $NBD_DEV image-${STAGE}.qcow2
|
||||
sync
|
||||
sfdisk $NBD_DEV << EOF
|
||||
4MiB,250MiB,c,*
|
||||
254MiB,,83;
|
||||
EOF
|
||||
sync
|
||||
kpartx -a $NBD_DEV
|
||||
mkdosfs -n boot -F 32 -v $MAP_BOOT_DEV
|
||||
mkfs.ext4 -L rootfs -O "^huge_file,^metadata_csum,^64bit" $MAP_ROOT_DEV
|
||||
sync
|
||||
else
|
||||
if [ ! -f "${WORK_DIR}/image-${PREV_STAGE}.qcow2" ]; then
|
||||
exit 1;
|
||||
fi
|
||||
echo "Creating backing image: image-${STAGE}.qcow2 <- ${WORK_DIR}/image-${PREV_STAGE}.qcow2"
|
||||
qemu-img create -f qcow2 \
|
||||
-o backing_file=${WORK_DIR}/image-${PREV_STAGE}.qcow2 \
|
||||
${WORK_DIR}/image-${STAGE}.qcow2
|
||||
sync
|
||||
qemu-nbd --discard=unmap -c $NBD_DEV image-${STAGE}.qcow2
|
||||
sync
|
||||
kpartx -a $NBD_DEV
|
||||
fi
|
||||
|
||||
mount -v -t ext4 $MAP_ROOT_DEV "${ROOTFS_DIR}"
|
||||
mkdir -p "${ROOTFS_DIR}/boot"
|
||||
mount -v -t vfat $MAP_BOOT_DEV "${ROOTFS_DIR}/boot"
|
||||
CURRENT_IMAGE=${WORK_DIR}/image-${STAGE}.qcow2
|
||||
CURRENT_MOUNTPOINT=${ROOTFS_DIR}
|
||||
popd > /dev/null
|
||||
else
|
||||
mount_qimage "${WORK_DIR}/image-${STAGE}.qcow2" "${ROOTFS_DIR}"
|
||||
fi
|
||||
echo "Current image in use: ${CURRENT_IMAGE} (MP: ${CURRENT_MOUNTPOINT})"
|
||||
fi
|
||||
}
|
||||
export -f load_qimage
|
||||
|
||||
# umount current image and refresh mount point env var
|
||||
unload_qimage() {
|
||||
if [ ! -z "${CURRENT_MOUNTPOINT}" ]; then
|
||||
fstrim -v "${CURRENT_MOUNTPOINT}" || true
|
||||
umount_qimage "${CURRENT_MOUNTPOINT}"
|
||||
fi
|
||||
}
|
||||
export -f unload_qimage
|
||||
|
||||
# based on: https://github.com/SirLagz/RaspberryPi-ImgAutoSizer
|
||||
# helper function for make_bootable_image, do not call directly
|
||||
function resize_qcow2() {
|
||||
if [ -z "$CALL_FROM_MBI" ]; then
|
||||
echo "resize_qcow2: cannot be called directly, use make_bootable_image instead"
|
||||
return 1
|
||||
fi
|
||||
|
||||
# ROOT_MARGIN=$((800*1024*1024))
|
||||
ROOT_MARGIN=$((1*1024*1024))
|
||||
PARTED_OUT=`parted -s -m "$NBD_DEV" unit B print`
|
||||
PART_NO=`echo "$PARTED_OUT" | grep ext4 | awk -F: ' { print $1 } '`
|
||||
PART_START=`echo "$PARTED_OUT" | grep ext4 | awk -F: ' { print substr($2,1,length($2)-1) } '`
|
||||
|
||||
e2fsck -y -f $MAP_ROOT_DEV || true
|
||||
|
||||
DATA_SIZE=`resize2fs -P $MAP_ROOT_DEV | awk -F': ' ' { print $2 } '`
|
||||
BLOCK_SIZE=$(dumpe2fs -h $MAP_ROOT_DEV | grep 'Block size' | awk -F': ' ' { print $2 }')
|
||||
BLOCK_SIZE=${BLOCK_SIZE// /}
|
||||
|
||||
let DATA_SIZE=$DATA_SIZE+$ROOT_MARGIN/$BLOCK_SIZE
|
||||
resize2fs -p $MAP_ROOT_DEV $DATA_SIZE
|
||||
sleep 1
|
||||
|
||||
let PART_NEW_SIZE=$DATA_SIZE*$BLOCK_SIZE
|
||||
let PART_NEW_END=$PART_START+$PART_NEW_SIZE
|
||||
ACT1=`parted -s "$NBD_DEV" rm 2`
|
||||
ACT2=`parted -s "$NBD_DEV" unit B mkpart primary $PART_START $PART_NEW_END`
|
||||
NEW_IMG_SIZE=`parted -s -m "$NBD_DEV" unit B print free | tail -1 | awk -F: ' { print substr($2,1,length($2)-1) } '`
|
||||
}
|
||||
export -f resize_qcow2
|
||||
|
||||
# create raw img from qcow2: make_bootable_image <in.qcow2> <out.img>
|
||||
function make_bootable_image() {
|
||||
|
||||
EXPORT_QCOW2="$1"
|
||||
EXPORT_IMAGE="$2"
|
||||
|
||||
echo "Connect block device to source qcow2"
|
||||
connect_blkdev "${EXPORT_QCOW2}"
|
||||
|
||||
echo "Resize fs and partition"
|
||||
CALL_FROM_MBI=1
|
||||
resize_qcow2
|
||||
sync
|
||||
CALL_FROM_MBI=
|
||||
|
||||
echo "Disconnect block device"
|
||||
disconnect_blkdev
|
||||
|
||||
if [ -z "$NEW_IMG_SIZE" ]; then
|
||||
echo "NEW_IMG_SIZE could not be calculated, cannot process image. Exit."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
echo "Shrinking qcow2 image"
|
||||
qemu-img resize --shrink "${EXPORT_QCOW2}" $NEW_IMG_SIZE
|
||||
sync
|
||||
|
||||
echo "Convert qcow2 to raw image"
|
||||
qemu-img convert -f qcow2 -O raw "${EXPORT_QCOW2}" "${EXPORT_IMAGE}"
|
||||
sync
|
||||
|
||||
echo "Get PARTUUIDs from image"
|
||||
IMGID="$(blkid -o value -s PTUUID "${EXPORT_IMAGE}")"
|
||||
|
||||
BOOT_PARTUUID="${IMGID}-01"
|
||||
echo "Boot: $BOOT_PARTUUID"
|
||||
ROOT_PARTUUID="${IMGID}-02"
|
||||
echo "Root: $ROOT_PARTUUID"
|
||||
|
||||
echo "Mount image"
|
||||
MOUNTROOT=${WORK_DIR}/tmpimage
|
||||
mkdir -p $MOUNTROOT
|
||||
|
||||
MOUNTPT=$MOUNTROOT
|
||||
PARTITION=2
|
||||
mount "${EXPORT_IMAGE}" "$MOUNTPT" -o loop,offset=$[ `/sbin/sfdisk -d "${EXPORT_IMAGE}" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*start=[ ]*//' | sed 's/,.*//'` * 512 ],sizelimit=$[ `/sbin/sfdisk -d "${EXPORT_IMAGE}" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*size=[ ]*//' | sed 's/,.*//'` * 512 ] || exit 1
|
||||
|
||||
MOUNTPT=$MOUNTROOT/boot
|
||||
PARTITION=1
|
||||
mount "${EXPORT_IMAGE}" "$MOUNTPT" -o loop,offset=$[ `/sbin/sfdisk -d "${EXPORT_IMAGE}" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*start=[ ]*//' | sed 's/,.*//'` * 512 ],sizelimit=$[ `/sbin/sfdisk -d "${EXPORT_IMAGE}" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*size=[ ]*//' | sed 's/,.*//'` * 512 ] || exit 1
|
||||
|
||||
if [ ! -d "${MOUNTROOT}/root" ]; then
|
||||
echo "Image damaged or not mounted. Exit."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
echo "Setup PARTUUIDs"
|
||||
if [ ! -z "$BOOT_PARTUUID" ] && [ ! -z "$ROOT_PARTUUID" ]; then
|
||||
echo "Set UUIDs to make it bootable"
|
||||
sed -i "s/BOOTDEV/PARTUUID=${BOOT_PARTUUID}/" "${MOUNTROOT}/etc/fstab"
|
||||
sed -i "s/ROOTDEV/PARTUUID=${ROOT_PARTUUID}/" "${MOUNTROOT}/etc/fstab"
|
||||
sed -i "s/ROOTDEV/PARTUUID=${ROOT_PARTUUID}/" "${MOUNTROOT}/boot/cmdline.txt"
|
||||
fi
|
||||
|
||||
echo "Umount image"
|
||||
sync
|
||||
umount "${MOUNTROOT}/boot" || exit 1
|
||||
umount "${MOUNTROOT}" || exit 1
|
||||
|
||||
echo "Remove qcow2 export image"
|
||||
rm -f "${EXPORT_QCOW2}"
|
||||
}
|
||||
export -f make_bootable_image
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
#!/bin/bash -e
|
||||
|
||||
if [ ! -d "${ROOTFS_DIR}" ]; then
|
||||
if [ ! -d "${ROOTFS_DIR}" ] || [ "${USE_QCOW2}" = "1" ]; then
|
||||
bootstrap ${RELEASE} "${ROOTFS_DIR}" http://raspbian.raspberrypi.org/raspbian/
|
||||
fi
|
||||
|
|
|
|||
Loading…
Reference in a new issue