Re: [win-pv-devel] Windows 10 domU is unstable with PV Bus Driver

["Michel D'HOOGE" <michel.dhooge@xxxxxxxxx>]

Paul,

Thanks for your quick reply.


> Sounds like it is xenvbd that's probably interacting badly with your storage 
> backend. If you leave don't install xenvbd, but install the rest (xenvif, 
> xennet and xeniface) do you see any instability?

I'll try that when I don't need my domU for a couple of hours ;-)
BTW, if that fails again, is there a mean to "disable" the domU PV
drivers from outside (i.e. prevent them to activate)?
And is it better to reboot each time it is requested? Or can I stack
all installs before rebooting?


> What storage backend are you using?

I'm not sure to know what you expect :-/  Here's my config:

boot = "c"
builder="hvm"
disk = [ '/dev/vg_sda/lv_win10,raw,hda,w' ]
keymap = "fr"
localtime=1
memory = 3800
name = "win10"
on_crash="preserve"
on_poweroff="preserve"
on_reboot="preserve"
on_soft_reset="preserve"
on_watchdog="preserve"
usb = 1
usbctrl = [ 'type=devicemodel,version=3' ]
usbdevice = [ 'tablet' ]
vcpus = 4
vif = [ 'script=vif-openvswitch,bridge=ovsbr0,mac=00:16:3e:35:fd:24' ]
vnc = 1
vncpasswd = "X"

As you may guess from its name, the storage is a raw LVM logical volume.


# xl info
host                   : vd-msi
release                : 4.13.11-1-ARCH
version                : #1 SMP PREEMPT Thu Nov 2 10:25:56 CET 2017
machine                : x86_64
nr_cpus                : 8
max_cpu_id             : 7
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 2
cpu_mhz                : 2592
hw_caps                :
bfebfbff:77faf3bf:2c100800:00000121:0000000f:009c6fbf:00000000:00000100
virt_caps              : hvm hvm_directio
total_memory           : 8099
free_memory            : 45
sharing_freed_memory   : 0
sharing_used_memory    : 0
outstanding_claims     : 0
free_cpus              : 0
xen_major              : 4
xen_minor              : 9
xen_extra              : .0
xen_version            : 4.9.0
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          :
xen_commandline        : console=vga dom0_mem=4096M,max:4096M
dom0_max_vcpus=4 iommu=dom0-passthrough,no-igfx loglvl
=all
cc_compiler            : gcc (GCC) 7.2.0
cc_compile_by          : aur
cc_compile_date        : Mon Oct  2 10:41:47 CEST 2017
build_id               : 2f5516ca767af60cacbdf6e625675540
xend_config_format     : 4


> Also, can you get hold of your VM's QEMU log? It might have some clues.

Can you point me to a doc for how to do that?


> Also, I'm curious as to why version 8.2.1 was not working for you.

Well, first, I have the "Welcome to the Device Driver Installation
Wizard". Then Windows complains about not being able to verify the
editor. And finally it fails with the status "Install failed"...


Thanks again
Michel

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