convert: windows: Online all virtio disks at first boot
resolves: RHEL-55763
This commit is contained in:
Richard W.M. Jones
parent
620a64c9a3
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3959367bee
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From d26ed76801f9d3ce5d3863ca09dfa653b4bcd1b2 Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Tue, 27 Aug 2024 12:36:41 +0100
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Subject: [PATCH] convert: windows: Online all virtio disks at first boot
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Windows 2022 (and possibly earlier versions back to around 2019) will
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force offline any non-boot disks which change bus, apparently as a
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security mitigation. The effect of this is that although the system
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drive (C:) is present after conversion, other drives may seem to
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disappear.
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Running a Powershell script to bring all disks online seems risky.
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The compromise is to bring online only virtio disks at first boot.
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To further reduce risk, we only do this if there are non-system disks
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(ie. > 1 disks in total), and only if we installed virtio drivers.
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Fixes: https://issues.redhat.com/browse/RHEL-55763
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Fixes: https://issues.redhat.com/browse/RHEL-55837
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Related: https://issues.redhat.com/browse/MTV-1299
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Related: https://bugzilla.redhat.com/show_bug.cgi?id=1662286
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Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
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Thanks: Martin Necas
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Acked-by: Martin Necas
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(cherry picked from commit cb56f6f94dc153051515fc7aa0d9ca646f5e2340)
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---
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convert/convert_windows.ml | 39 +++++++++++++++++++++++++++++++++++++-
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1 file changed, 38 insertions(+), 1 deletion(-)
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diff --git a/convert/convert_windows.ml b/convert/convert_windows.ml
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index 52ca5bbe..352e1218 100644
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--- a/convert/convert_windows.ml
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+++ b/convert/convert_windows.ml
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@@ -38,7 +38,8 @@ module G = Guestfs
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* time the Windows VM is booted on KVM.
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*)
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-let convert (g : G.guestfs) _ inspect i_firmware block_driver _ static_ips =
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+let convert (g : G.guestfs) source inspect i_firmware
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+ block_driver _ static_ips =
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(*----------------------------------------------------------------------*)
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(* Inspect the Windows guest. *)
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@@ -272,6 +273,8 @@ let convert (g : G.guestfs) _ inspect i_firmware block_driver _ static_ips =
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Registry.with_hive_write g inspect.i_windows_software_hive
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update_software_hive;
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+ configure_online_disks block_driver;
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+
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configure_network_interfaces net_driver;
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fix_ntfs_heads ();
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@@ -668,6 +671,40 @@ let convert (g : G.guestfs) _ inspect i_firmware block_driver _ static_ips =
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warning (f_"could not find registry key \
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HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion")
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+ and configure_online_disks block_driver =
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+ (* If there are > 1 disks, run a script which will force Windows
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+ * to bring them all online. Windows 2022 will offline non-boot disks
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+ * where the bus changes as some sort of "security" mitigation.
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+ * https://issues.redhat.com/browse/RHEL-55837
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+ * https://issues.redhat.com/browse/MTV-1299
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+ * https://bugzilla.redhat.com/show_bug.cgi?id=1662286
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+ *)
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+ let virtio_installed =
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+ match block_driver with
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+ | Inject_virtio_win.Virtio_blk | Virtio_SCSI -> true
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+ | IDE -> false in
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+ let more_than_one_disk = List.length source.s_disks > 1 in
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+
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+ if virtio_installed && more_than_one_disk then (
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+ let psh_filename = "online-disks" in
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+ let psh = ref [] in
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+ let add = List.push_back psh in
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+
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+ add "# Uncomment this line for lots of debug output.";
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+ add "# Set-PSDebug -Trace 1";
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+ add "";
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+ add "Write-Host \"Online all virtio disks\"";
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+ add "";
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+ add "Get-Disk | Where { $_.FriendlyName -like '*VirtIO*' } | % {";
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+ add " Write-Host (' - ' + $_.Number + ': ' + $_.FriendlyName + '(' + [math]::Round($_.Size/1GB,2) + 'GB)')";
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+ add " $_ | Set-Disk -IsOffline $false";
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+ add " $_ | Set-Disk -IsReadOnly $false";
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+ add "}";
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+
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+ (* Install the Powershell script to run late at firstboot. *)
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+ Firstboot.add_firstboot_powershell g inspect.i_root psh_filename !psh
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+ )
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+
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and configure_network_interfaces net_driver =
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(* If we were asked to force network interfaces to have particular
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* static IP addresses then it is done here by installing a
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@ -8,7 +8,7 @@
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Name: virt-v2v
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Epoch: 1
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Version: 2.5.6
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Release: 3%{?dist}
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Release: 4%{?dist}
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Summary: Convert a virtual machine to run on KVM
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License: GPL-2.0-or-later AND LGPL-2.0-or-later
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@ -48,6 +48,7 @@ Patch0017: 0017-RHEL-9-oo-compressed-Remove-nbdcopy-version-check-an.patch
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Patch0018: 0018-RHEL-9-tests-Remove-btrfs-test.patch
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Patch0019: 0019-RHEL-9-Remove-block-driver-option.patch
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Patch0020: 0020-RHEL-Add-warning-about-virt-v2v-in-place-not-being-s.patch
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Patch0021: 0021-convert-windows-Online-all-virtio-disks-at-first-boo.patch
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%if !0%{?rhel}
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# libguestfs hasn't been built on i686 for a while since there is no
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@ -351,6 +352,10 @@ make -C tests TESTS=test-v2v-fedora-luks-on-lvm-conversion.sh check
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%changelog
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* Tue Aug 27 2024 Richard W.M. Jones <rjones@redhat.com> - 1:2.5.6-4
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- convert: windows: Online all virtio disks at first boot
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resolves: RHEL-55763
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* Thu Aug 08 2024 Richard W.M. Jones <rjones@redhat.com> - 1:2.5.6-3
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- Further fixes for QEMU Guest Agent install & VMware Tools removal
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resolves: RHEL-49761, RHEL-51169
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