require 'shellwords'
require 'tmpdir'
require 'yaml'
+require 'json'
class SyncDirDef
DEFAULT_EXCLUDE = %w[/proc/* /sys/* /dev/mqueue /dev/hugepages /run/* /var/lib/os-prober/mount /swap /dev/shm/* /var/lib/lxcfs/*]
- attr_accessor :path, :size, :exclude, :size, :srcpath, :fs_features, :device
+ attr_accessor :path, :size, :exclude, :size, :srcpath, :fs_features, :device, :fs_uuid
def initialize(path: '/', size: 8, exclude: DEFAULT_EXCLUDE, srcpath: nil, fs_features: nil)
@path = path
@size = size.to_f
@srcpath = srcpath || path
@fs_features = fs_features
@device = nil
+ @fs_uuid = nil
end
end
end
system("parted", "-s", path, "mklabel", use_gpt ? 'gpt' : 'msdos') or raise "Failed to create partition label"
system("parted", "-s", path, "mkpart", "primary", "1MiB", "#{size_gb * 1024 - 1}MiB") or raise "Failed to create partition"
- if use_gpt
- system("parted", "-s", path, "name", "1", di.path) or raise "Failed to set part label"
- else
+ if !use_gpt
system("parted", "-s", path, "set", "1", "boot", "on") or raise "Failed to set bios boot partition"
end
- puts "Image partition created."
- #system "sfdisk", "-l", path
+ puts "Image partition has been created."
end
def with_loopdev &block
def create_fs
with_loopdev do |devices|
- devices.each_with_index do |dev, index|
+ dirs.each_with_index do |di, index|
+ dev = di.device
puts "Creating filesystem on #{dev}..."
cmd = %w(mkfs.ext4 -q)
di = dirs[index]
end
cmd << dev
system(*cmd) or raise "Failed to create file system on #{dev}"
+ system "e2label", dev, di.path == '/' ? 'ROOT' : di.path[1..-1].tr('/', '-')
+ di.fs_uuid = `blkid -o value -s UUID #{di.device}`.chomp("\n")
end
end
end
def fix_boot
puts "Fixing boot environments..."
Dir.mktmpdir("ci-#{$$}-#{name}") do |dir|
- system("cp", "-a", "/usr/lib/grub/i386-pc/boot.img", dir) or raise "Failed to copy boot.img"
- coreimg = "#{dir}/core.img"
- system("grub-mkimage", "-o", coreimg, "-O", "i386-pc", "-p", "(hd0,msdos1)/boot/grub", "biosdisk", "part_msdos", "ext2", "gzio", "xzio", "lzopio") or raise "Failed to create grub core image."
with_loopdev do |devices|
- root_dev = "/dev/#{devices.first[/loop\d+/]}"
puts "Override grub with host version..."
- system("grub-bios-setup", "-d", dir, root_dev) or raise "Failed to run grub-bios-setup"
- fs_uuids = devices.map { |d| `blkid -o value -s UUID #{d}`.chomp("\n") }
- rootfs_uuid = fs_uuids.first
+ root_dev = "/dev/#{devices.first[/loop\d+/]}"
+ rootfs_uuid = dirs.find { |d| d.path == '/'}.fs_uuid
puts "New rootfs UUID=#{rootfs_uuid}"
begin
system("mount", devices.first, dir) or raise "Failed to mount #{devices.first} to #{dir}"
+ system("mount", "--bind", "/dev", "#{dir}/dev") or raise "Failed to mount /dev to #{dir}/dev"
+ system("mount", "--bind", "/proc", "#{dir}/proc") or raise "Failed to mount /proc to #{dir}/proc"
+
dirs[1..-1].each_with_index do |di, idx|
system "mkdir", "-p", "#{dir}#{di.path}"
system("mount", di.device, "#{dir}#{di.path}") or raise "Failed to mount #{di.device} to #{dir}#{path}"
end
+ system "rm", "-f", "#{dir}/etc/systemd/system/udev.service", "#{dir}/etc/systemd/system/systemd-udevd.service"
+
puts "Rewrite fstab..."
File.open "#{dir}/etc/fstab", "w" do |f|
- devices.map.with_index { |d, idx|
- f << %W(UUID=#{fs_uuids[idx]} #{dirs[idx].path} ext4 defaults,noatime 0 #{dirs[idx].path == '/' ? 1 : 2}).join("\t")
+ dirs.each_with_index do |di, idx|
+ f << %W(UUID=#{di.fs_uuid} #{di.path} ext4 defaults,noatime 0 #{di.path == '/' ? 1 : 2}).join("\t")
f << "\n"
- }
+ end
end
unless File.exists? "#{dir}/vmlinuz"
system("chroot", dir, "apt-get", "-y", "install", "linux-image-amd64")
end
- puts "Update grub.cfg..."
- system("mkdir", "-p", "#{dir}/boot/grub/i386-pc") or raise "Failed to create grub dir"
- system("cp -a /usr/lib/grub/i386-pc/*.mod #{dir}/boot/grub/i386-pc/") or raise "Failed to copy grub modules"
- if File.exists? "#{dir}/boot/grub/grub.cfg"
- grubconf = File.read "#{dir}/boot/grub/grub.cfg"
- if old_uuid = grubconf[/root=UUID=(\S+)/, 1]
- File.write "#{dir}/boot/grub/grub.cfg", grubconf.gsub(/#{old_uuid}/, rootfs_uuid)
- end
- else
- system("chroot", dir, "apt-get", "-qy", "update")
+ puts "Update grub..."
+ unless File.exists? "#{dir}/usr/sbin/grub-mkconfig"
+ system("chroot", dir, "apt-get", "-qy", "update") or raise "Failed to install grub-pc"
system({'DEBIAN_FRONTEND' => 'noninteractive'}, "chroot", dir, "apt-get", "-y", "install", "grub-pc")
- File.write "#{dir}/boot/grub/grub.cfg", <<-EOC
- set timeout=5
- insmod part_msdos
- insmod ext2
- insmod linux
- search --no-floppy --fs-uuid --set=root #{rootfs_uuid}
- menuentry 'Linux' {
- linux /vmlinuz root=UUID=#{rootfs_uuid} ro
- initrd /initrd.img
- }
- EOC
end
+ File.open "#{dir}/boot/grub/device.map", "w" do |f|
+ f.puts "(hd0)\t#{root_dev}"
+ end
+ system("chroot", dir, "grub-mkconfig", "-o", "/boot/grub/grub.cfg") or raise "grub-mkconfig fails."
+ system(*%W(grub-install --no-floppy --grub-mkdevicemap=#{dir}/boot/grub/device.map --root-directory=#{dir} #{root_dev})) or raise "grub-install failed."
ensure
+ system("umount", "#{dir}/dev")
+ system("umount", "#{dir}/proc")
dirs.reverse[0..-2].each do |di, idx|
system("umount", "#{dir}#{di.path}")
end
end
end
+ def write_json
+ jdef = []
+ dirs.each_with_index do |dir, idx|
+ jdef.push({
+ "Description" => dir.path == '/' ? 'root' : dir.path[1..-1].tr('/', '-'),
+ "Format" => "raw",
+ "UserBucket" => {
+ "S3Bucket" => "Change-to-your-buket-name",
+ "S3Key" => "/src-disks/#{img_path_base}_#{idx}.img"
+ }
+ })
+ end
+ File.write "#{img_path_base}.json", JSON.pretty_generate(jdef)
+ end
+
+
def run
create_disk
create_fs
sync_dirs
fix_boot
+ write_json
puts "Image creation has been complated (#{name})"
end
-
end
if $0 == __FILE__
if imgdef.kind_of?(Hash)
name = imgdef['name']
(imgdef['dirs'] || {}).each do |path, opts|
+ opts.kind_of?(Hash) or opts = {size: opts}
dirs << SyncDirDef.new({path: path}.merge(opts.keys.map(&:to_sym).zip(opts.values).to_h))
end
else
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