# File lib/boxgrinder-build/helpers/linux-helper.rb, line 56 def initialize(options = {}) @log = options[:log] || LogHelper.new end
# File lib/boxgrinder-build/helpers/linux-helper.rb, line 113 def kernel_image_name(guestfs) guestfs.sh("ls -1 /boot | grep initramfs | wc -l").chomp.strip.to_i > 0 ? "initramfs" : "initrd" end
# File lib/boxgrinder-build/helpers/linux-helper.rb, line 94 def kernel_version(guestfs) kernel_versions = guestfs.ls("/lib/modules") # By default use the latest available kernel... version = RPMVersion.new.newest(kernel_versions) # ...but prefer xen or PAE kernel over others if kernel_versions.size > 1 kernel_versions.each do |v| if v.match(/xen$/) or v.match(/PAE$/) version = v break end end end version end
Returns valid array of sorted mount points
# File lib/boxgrinder-build/helpers/linux-helper.rb, line 67 def partition_mount_points(partitions) partitions.keys.sort do |a, b| a_count = a.count('/') b_count = b.count('/') if a_count > b_count v = 1 else if a_count < b_count v = -1 else if a.length == b.length v = a <=> b else v = a.length <=> b.length end end end # This forces having swap partition at the end of the disk v = 1 if a_count == 0 v = -1 if b_count == 0 v end end
# File lib/boxgrinder-build/helpers/linux-helper.rb, line 117 def recreate_kernel_image(guestfs, modules = []) kernel_version = kernel_version(guestfs) raise "Cannot find valid kernel installs in the appliance. Make sure you have your kernel installed in '/lib/modules'." if kernel_version.nil? kernel_image_name = kernel_image_name(guestfs) if guestfs.exists("/sbin/dracut") != 0 command = "/sbin/dracut -f -v --add-drivers #{modules.join(' ')}" else drivers_argument = "" modules.each { |mod| drivers_argument << " --preload=#{mod}" } command = "/sbin/mkinitrd -f -v#{drivers_argument}" end @log.trace "Additional modules to preload in kernel: #{modules.join(', ')}" @log.debug "Recreating kernel image for #{kernel_version} kernel..." guestfs.sh("#{command} /boot/#{kernel_image_name}-#{kernel_version}.img #{kernel_version}") @log.debug "Kernel image recreated." end