From 898b0654a0c4ef55af147a5ca081d2399ce05855 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Golembiovsk=C3=BD?= Date: Thu, 5 Mar 2020 15:37:13 +0100 Subject: [PATCH] windows: delay installation of qemu-ga MSI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of running firstboot script during early boot schedule a task delayed for 2 minutes. During the first boot, after virt-v2v conversion, Windows installs the drivers injected by virt-v2v. When this installation is finished Windows enforces some kind of internal reboot. This unfortunately terminates any running firstboot scripts thus killing the installation of qemu-ga MSI. This is just a best-effort mitigation. It can still happen (e.g. with slow disk drives) that the drivers are not yet installed when the delayed installation starts. On the other hand we cannot delay it too much otherwise we risk that the users logs in and will be doing some work when the MSI installation starts. After MSI installation finishes the VM needs to be rebooted which would be annoying if that would happen under users hands. Although this is not a best fix (that may come later as it is more complex, e.g. introducing waiting mechanism), the delay as it is defined works in most cases. And it dramaticaly improves the situations -- originaly I experienced more than 90% failure rate. Signed-off-by: Tomáš Golembiovský (cherry picked from commit dc66e78fa37db33e3c7358b7f7c7fa809cf62f9d in virt-v2v) --- v2v/convert_windows.ml | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/v2v/convert_windows.ml b/v2v/convert_windows.ml index 43c1f85de..088cd33d9 100644 --- a/v2v/convert_windows.ml +++ b/v2v/convert_windows.ml @@ -428,16 +428,13 @@ popd and configure_qemu_ga files = List.iter ( fun msi_path -> - let fb_script = "\ -echo Installing qemu-ga from " ^ msi_path ^ " -\"\\" ^ msi_path ^ "\" /norestart /qn /l+*vx \"%~dpn0.log\" -set elvl=!errorlevel! -echo Done installing qemu-ga error_level=!elvl! -if !elvl! == 0 ( - echo Restarting Windows... - shutdown /r /f /c \"rebooted by firstboot script\" -) -" in + let fb_script = sprintf "\ +echo Removing any previously scheduled qemu-ga installation +schtasks.exe /Delete /TN Firstboot-qemu-ga /F +echo Scheduling delayed installation of qemu-ga from %s +powershell.exe -command \"$d = (get-date).AddSeconds(120); schtasks.exe /Create /SC ONCE /ST $d.ToString('HH:mm') /SD $d.ToString('MM/dd/yyyy') /RU SYSTEM /TN Firstboot-qemu-ga /TR \\\"C:\\%s /forcerestart /qn /l+*vx C:\\%s.log\\\"\" + " + msi_path msi_path msi_path in Firstboot.add_firstboot_script g inspect.i_root ("install " ^ msi_path) fb_script; ) files -- 2.18.4