Backup push
This commit is contained in:
Dennis ten Hoove
parent
affd603fd7
commit
748d514327
1 changed files with 76 additions and 14 deletions
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@ -8,11 +8,13 @@
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# Print manual if no parameters provided or invalid amount of parameters is provided
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if [[ ! -n $1 || -n $2 ]]; then
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cat <<- END
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Usage: bttrfs-deploy [action]
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Usage: bttrfs-deploy <action> [target]
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Actions:
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update Update existing deployments
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update Check for updates, optionally provide a target, if no target provided it defaults to primary
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deploy Deploy a new or update an existing deployment
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init Initialize bttrfs on a new system
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teardown Remove all bttrfs-deploy related files and folders
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get-available List available packages in repo
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END
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exit 0
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fi
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@ -21,6 +23,9 @@ fi
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#
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declare -r bttrfs_dir='/bttrfs/'
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declare -r bttrfs_deployment_dir="$bttrfs_dir/deployments"
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# FIXME: Automatically filter trailing /
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declare -r repo_url='https://repo.arkanelinux.org/bttrfs-test'
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declare -r repo_default_image='arkanelinux'
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## Common functions
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#
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@ -51,7 +56,7 @@ cleanup_and_quit () {
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exit 1
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# Check if all dependencies are installed, quit if not
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for prog in btrfs; do
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for prog in btrfs wget; do
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if ! command -v $prog > /dev/null; then
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printf "\e[1;31m<#>\e[0m\e[1m Failed to locate $prog, ensure it is installed\e[0m\n"
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exit 1
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@ -73,10 +78,12 @@ init () {
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# Create directory structure
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printf "\e[1;34m-->\e[0m\e[1m Creating directory structure\e[0m\n"
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mkdir -pv $bttrfs_dir/deployments \
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$bttrfs_dir/deployments/primary_a \
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$bttrfs_dir/deployments/primary_b \
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$bttrfs_dir/shared ||
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mkdir -pv $(readlink -m $bttrfs_dir/deployments) \
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$(readlink -m $bttrfs_dir/deployments/primary_a) \
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$(readlink -m $bttrfs_dir/deployments/primary_b) \
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$(readlink -m $bttrfs_dir/data) \
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$(readlink -m $bttrfs_dir/cache) \
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$(readlink -m $bttrfs_dir/shared) ||
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cleanup_and_quit "Failed to create /bttrfs and related directories"
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# Write default config file
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@ -138,18 +145,73 @@ teardown () {
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}
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# Check for updates and apply
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update_deployments () {
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# List all available packages defined in the repo's list file
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get_available () {
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printf "\e[1;34m-->\e[0m\e[1m Downloading list file from $repo_url\e[0m\n"
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curl -sf "${repo_url}/list" || cleanup_and_quit 'Failed to download repo file'
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# Check os-name/version, if higher pull and deploy
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asd
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}
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# Check if A or B root fs is currently active
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check_currently_active_rootfs () {
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asd
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# Deploy a new or update an existing deployment
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deploy () {
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# Load defaults from config file
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source $bttrfs_dir/config
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# target and version are optional, if not defined default to primary latest
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[[ -n $2 ]] && declare -r deploy_target=$2 || declare -r deploy_target="$primary_os"
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[[ -n $3 ]] && declare -r deploy_version=$3 || declare -r deploy_version='latest'
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printf "\e[1;34m-->\e[0m\e[1m Deploying $deploy_target $deploy_version\e[0m\n"
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# If latest is requested grab latest file
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[[ $deploy_version == 'latest' ]] &&
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declare latest_data=$(curl -sf "${repo_url}/${deploy_target}/${deploy_version}") &&
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# Split latest_version at the delimiter, creating an array with data.1=package ver, data.2=compression method
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readarray -d : -t data <<< "$latest_data"
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# A carriage feed is inserted for some reason, lets remove it
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data[2]=${data[2]//[$'\t\r\n']}
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# Check if requested version is already downloaded
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if [[ -e $(readlink -m $bttrfs_dir/cache/${data[0]}.tar.${data[1]}) ]]; then
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printf "\e[1;34m-->\e[0m\e[1m ${data[0]} already in cache, skipping download\e[0m\n"
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else
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# Download the tarball
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wget -P $(readlink -m $bttrfs_dir/cache/) "${repo_url}/${repo_default_image}/${data[0]}.tar.${data[1]}" ||
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(printf "\e[1;31m<#>\e[0m Failed to download tarball\e[0m\n"; exit 1)
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fi
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printf "\e[1;34m-->\e[0m\e[1m Validating integrity\e[0m\n"
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sha1sum "$(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]})" |
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grep "${data[3]}" ||
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(printf "\e[1;31m<#>\e[0m Checksum does not match repo file, got $chksum\e[0m\n"; exit 1)
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# Extract the root image
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printf "\e[1;34m-->\e[0m\e[1m Writing root\e[0m\n"
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[[ ! -e $(readlink -m $bttrfs_dir/cache/${data[0]}.img) ]] &&
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(tar -xf $(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]}) -C $(readlink -m ${bttrfs_dir}/cache/) "${data[0]}.img" ||
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(printf "\e[1;31m<#>\e[0m Failed extracting root image from tarball\e[0m\n"; exit 1))
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# Write the root image
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btrfs receive -f $(readlink -m ${bttrfs_dir}/cache/${data[0]}.img) $(readlink -m ${bttrfs_dir}/deployments/primary_a/)
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#printf "\e[1;34m-->\e[0m\e[1m Writing etc\e[0m\n"
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#printf "\e[1;34m-->\e[0m\e[1m Writing var\e[0m\n"
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# Remove uncompressed img files to save space
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#printf "\e[1;34m-->\e[0m\e[1m Cleaning up extracted images\e[0m\n"
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#rm ${bttrfs_dir}/
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}
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# If $1 is init run init
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[[ $1 == 'init' ]] && init
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[[ $1 == 'teardown' ]] && teardown
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[[ $1 == 'update' ]] && check_for_updates
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[[ $1 == 'get-available' ]] && get_available
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[[ $1 == 'deploy' ]] && deploy
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