On 12/01/22 13:49, Richard W.M. Jones wrote:
> If the virtio-win ISO contains drivers for Windows 11, Windows 2019 or
> Windows 2022, and the guest matches these, then copy in the right
> drivers. For this to work you will need libguestfs >= 1.49.8 which
> allows osinfo to be used to detect Windows versions >= 10.
>
> Side note: virtio-win uses a mix of different path element styles.
>
> In the exploded tree of drivers installed by the RPM:
>
> /usr/share/virtio-win/drivers/amd64$ ls -l
> total 0
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win10
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win11
> drwxr-xr-x. 2 root root 236 Nov 30 13:28 Win2008R2
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win2012
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win2012R2
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win2016
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win2019
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win2022
> drwxr-xr-x. 2 root root 236 Nov 30 13:28 Win7
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win8
> drwxr-xr-x. 2 root root 174 Nov 30 13:28 Win8.1
>
> Inside the ISO:
>
> ><fs> ll /viostor/
> total 28
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 2k12
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 2k12R2
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 2k16
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 2k19
> dr-xr-xr-x 1 root root 2048 Dec 11 2021 2k22
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 2k8R2
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 w10
> dr-xr-xr-x 1 root root 2048 Dec 11 2021 w11
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 w7
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 w8
> dr-xr-xr-x 1 root root 2048 Jun 14 2020 w8.1
>
> So I have matched both path elements.
>
> Reported-by: Tingting Zheng
> Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=2149811
> ---
> convert/windows_virtio.ml | 45 +++++++++++++++++++++++----------------
> 1 file changed, 27 insertions(+), 18 deletions(-)
>
> diff --git a/convert/windows_virtio.ml b/convert/windows_virtio.ml
> index a27cd6a543..3156694d11 100644
> --- a/convert/windows_virtio.ml
> +++ b/convert/windows_virtio.ml
> @@ -50,9 +50,9 @@ let rec install_drivers ((g, _) as reg) inspect =
> g#mkdir_p driverdir;
>
> if not (copy_drivers g inspect driverdir) then (
> - warning (f_"there are no virtio drivers available for this version of
Windows (%d.%d %s %s). virt-v2v looks for drivers in %s\n\nThe guest will be configured
to use slower emulated devices.")
> + warning (f_"there are no virtio drivers available for this version of
Windows (%d.%d %s %s %s). virt-v2v looks for drivers in %s\n\nThe guest will be
configured to use slower emulated devices.")
> inspect.i_major_version inspect.i_minor_version inspect.i_arch
> - inspect.i_product_variant virtio_win;
> + inspect.i_product_variant inspect.i_osinfo virtio_win;
> (IDE, RTL8139, false, false, false, false)
> )
> else (
> @@ -279,7 +279,8 @@ and copy_from_virtio_win g inspect srcdir destdir filter missing
=
> *)
> and virtio_iso_path_matches_guest_os path inspect =
> let { i_major_version = os_major; i_minor_version = os_minor;
> - i_arch = arch; i_product_variant = os_variant } = inspect in
> + i_arch = arch; i_product_variant = os_variant;
> + i_osinfo = osinfo } = inspect in
> try
> (* Lowercased path, since the ISO may contain upper or lowercase path
> * elements.
> @@ -300,37 +301,45 @@ and virtio_iso_path_matches_guest_os path inspect =
>
> let is_client os_variant = os_variant = "Client"
> and not_client os_variant = os_variant <> "Client"
> - and any_variant os_variant = true in
> - let p_os_major, p_os_minor, match_os_variant =
> + and any_variant os_variant = true
> + and any_osinfo osinfo = true in
> + let p_os_major, p_os_minor, match_os_variant, match_osinfo =
> if pathelem "xp" || pathelem "winxp" then
> - (5, 1, any_variant)
> + (5, 1, any_variant, any_osinfo)
> else if pathelem "2k3" || pathelem "win2003" then
> - (5, 2, any_variant)
> + (5, 2, any_variant, any_osinfo)
> else if pathelem "vista" then
> - (6, 0, is_client)
> + (6, 0, is_client, any_osinfo)
> else if pathelem "2k8" || pathelem "win2008" then
> - (6, 0, not_client)
> + (6, 0, not_client, any_osinfo)
> else if pathelem "w7" || pathelem "win7" then
> - (6, 1, is_client)
> + (6, 1, is_client, any_osinfo)
> else if pathelem "2k8r2" || pathelem "win2008r2" then
> - (6, 1, not_client)
> + (6, 1, not_client, any_osinfo)
> else if pathelem "w8" || pathelem "win8" then
> - (6, 2, is_client)
> + (6, 2, is_client, any_osinfo)
> else if pathelem "2k12" || pathelem "win2012" then
> - (6, 2, not_client)
> + (6, 2, not_client, any_osinfo)
> else if pathelem "w8.1" || pathelem "win8.1" then
> - (6, 3, is_client)
> + (6, 3, is_client, any_osinfo)
> else if pathelem "2k12r2" || pathelem "win2012r2" then
> - (6, 3, not_client)
> + (6, 3, not_client, any_osinfo)
> else if pathelem "w10" || pathelem "win10" then
> - (10, 0, is_client)
> + (10, 0, is_client, ((=) "win10"))
> + else if pathelem "w11" || pathelem "win11" then
> + (10, 0, is_client, ((=) "win11"))
> else if pathelem "2k16" || pathelem "win2016" then
> - (10, 0, not_client)
> + (10, 0, not_client, ((=) "win2k16"))
> + else if pathelem "2k19" || pathelem "win2019" then
> + (10, 0, not_client, ((=) "win2k19"))
> + else if pathelem "2k22" || pathelem "win2022" then
> + (10, 0, not_client, ((=) "win2k22"))
> else
> raise Not_found in
>
> arch = p_arch && os_major = p_os_major && os_minor = p_os_minor
&&
> - match_os_variant os_variant
> + match_os_variant os_variant &&
> + match_osinfo osinfo
>
> with Not_found -> false
>
>
I think this patch would be improved if the osinfo part were first
introduced as a pure refactoring ("any_osinfo"), and then the bugfix
were implemented in a separate patch. But, it's not a big deal, so:
Reviewed-by: Laszlo Ersek <lersek(a)redhat.com>
I really want to take a big axe to this code and rewrite it all more
sensibly. It has accreted over a very long period of time and is
extremely hard to follow (although not helped at all by the fact that
the virtio-win disk is plain weird and unhelpfully constructed).
But that's for another day ...
Thanks,
Rich.
--
Richard Jones, Virtualization Group, Red Hat