Re: [Libguestfs] [PATCH v4] v2v: linux: correctly reconfigure the initrd on Debian

Using update-initramfs is the native way of updating initrd on Debian based systems. To add some modules to the image we can list them in file /etc/initramfs-tools/modules. Signed-off-by: Tomáš Golembiovský <tgolembi(a)redhat.com&gt; --- v2v/convert_linux.ml | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/v2v/convert_linux.ml b/v2v/convert_linux.ml index 08f4b2a..22a7919 100644 --- a/v2v/convert_linux.ml +++ b/v2v/convert_linux.ml @@ -478,6 +478,15 @@ let rec convert ~keep_serial_console (g : G.guestfs) inspect source rcaps = ignore (g#command (Array.of_list args)) in + let run_update_initramfs_command () = + let args = + "/usr/sbin/update-initramfs" :: + (if verbose () then [ "-v" ] else []) + @ [ "-c"; "-k"; mkinitrd_kv ] + in + ignore (g#command (Array.of_list args)) + in + if g#is_file ~followsymlinks:true "/sbin/dracut" then run_dracut_command "/sbin/dracut" else if g#is_file ~followsymlinks:true "/usr/bin/dracut" then @@ -491,6 +500,30 @@ let rec convert ~keep_serial_console (g : G.guestfs) inspect source rcaps = "-k"; kernel.ki_vmlinuz |] ) ) + else if family = `Debian_family then ( + if not (g#is_file ~followsymlinks:true "/usr/sbin/update-initramfs") then + error (f_"unable to rebuild initrd (%s) because update-initramfs was not found in the guest") + initrd; + + if List.length modules > 0 then ( + (* The modules to add to initrd are defined in: + * /etc/initramfs-tools/modules + * File format is same as modules(5). + *) + let file = "/etc/initramfs-tools/modules" in + let path = sprintf "/files%s" file in

+ g#aug_transform "modules" file; + g#aug_load ();

+ g#aug_set (sprintf "%s/#comment[last()+1]" path) + "The following modules were added by virt-v2v"; + List.iter ( + fun m -> g#aug_clear (sprintf "%s/%s" path m) + ) modules;