Current VM Config
<domain type='kvm' id='1'>
<name>csmccarronwx00</name>
<uuid>82c5e4f6-6991-cd5f-8207-49db04386cc9</uuid>
<description>csmccarronwx00 i440fx-2.5 OVMF</description>
<metadata>
<vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png"
os="windows10"/>
</metadata>
<memory unit='KiB'>10485760</memory>
<currentMemory unit='KiB'>10485760</currentMemory>
<memoryBacking>
<nosharepages/>
</memoryBacking>
<vcpu placement='static'>12</vcpu>
<cputune>
<vcpupin vcpu='0' cpuset='6'/>
<vcpupin vcpu='1' cpuset='18'/>
<vcpupin vcpu='2' cpuset='7'/>
<vcpupin vcpu='3' cpuset='19'/>
<vcpupin vcpu='4' cpuset='8'/>
<vcpupin vcpu='5' cpuset='20'/>
<vcpupin vcpu='6' cpuset='9'/>
<vcpupin vcpu='7' cpuset='21'/>
<vcpupin vcpu='8' cpuset='10'/>
<vcpupin vcpu='9' cpuset='22'/>
<vcpupin vcpu='10' cpuset='11'/>
<vcpupin vcpu='11' cpuset='23'/>
<emulatorpin cpuset='1-3,13-15'/>
</cputune>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64' machine='pc-i440fx-2.5'>hvm</type>
<loader readonly='yes'
type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
<nvram>/etc/libvirt/qemu/nvram/82c5e4f6-6991-cd5f-8207-49db04386cc9_VARS-pure-efi.fd</nvram>
<boot dev='hd'/>
<boot dev='cdrom'/>
<bootmenu enable='yes' timeout='3000'/>
</os>
<features>
<acpi/>
<apic/>
<hyperv>
<relaxed state='on'/>
<vapic state='on'/>
<spinlocks state='on' retries='8191'/>
<vendor id='none'/>
</hyperv>
</features>
<cpu mode='host-passthrough'>
<topology sockets='1' cores='6' threads='2'/>
</cpu>
<clock offset='localtime'>
<timer name='hypervclock' present='yes'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/local/sbin/qemu</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<source
dev='/dev/disk/by-id/ata-Samsung_SSD_850_PRO_256GB_S1SUNSAG361503D'/>
<backingStore/>
<target dev='hdc' bus='sata'/>
<alias name='sata0-0-2'/>
<address type='drive' controller='0' bus='0' target='0' unit='2'/>
</disk>
<disk type='block' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<source dev='/dev/disk/by-id/ata-SanDisk_Ultra_II_480GB_161322801967'/>
<backingStore/>
<target dev='hdd' bus='sata'/>
<alias name='sata0-0-3'/>
<address type='drive' controller='0' bus='0' target='0' unit='3'/>
</disk>
<controller type='usb' index='0' model='ich9-ehci1'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07'
function='0x7'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci1'>
<alias name='usb'/>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'
multifunction='on'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci2'>
<alias name='usb'/>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07'
function='0x1'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci3'>
<alias name='usb'/>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07'
function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
<controller type='sata' index='0'>
<alias name='sata0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</controller>
<controller type='virtio-serial' index='0'>
<alias name='virtio-serial0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x0'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:86:5a:91'/>
<source bridge='br0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/0'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/0'>
<source path='/dev/pts/0'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<channel type='unix'>
<source mode='bind'
path='/var/lib/libvirt/qemu/channel/target/domain-csmccarronwx00/org.qemu.guest_agent.0'/>
<target type='virtio' name='org.qemu.guest_agent.0' state='disconnected'/>
<alias name='channel0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x0a' slot='0x00' function='0x0'/>
</source>
<alias name='hostdev0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05'
function='0x0'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x0c' slot='0x00' function='0x0'/>
</source>
<alias name='hostdev1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08'
function='0x0'/>
</hostdev>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09'
function='0x0'/>
</memballoon>
</devices>
</domain>
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1580459
Title:
Windows (10?) guest freezes entire host on shutdown if using PCI
passthrough
Status in libvirt:
New
Status in QEMU:
New
Status in Arch Linux:
New
Status in Debian:
New
Status in Fedora:
New
Bug description:
Problem: after leaving a Windows VM that uses PCI passthrough (as we
do for gaming graphics cards, sound cards, and in my case, a USB card)
running for some amount of time between 1 and 2 hours (it's not
consistent with exactly how long), and for any amount of time longer
than that, shutting down that guest will, right as it finishes
shutting down, freeze the host computer, making it require a hard
reboot. Unbinding (or in the other user's case, unbinding and THEN
binding) any PCI device in sysfs, even one that has nothing to do with
the VM, also has the same effect as shutting down the VM (if the VM
has been running long enough). So, it's probably an issue related to
unbinding and binding PCI devices.
There's a lot of info on this problem over at
https://bbs.archlinux.org/viewtopic.php?id=206050
Here's a better-organized list of main details:
-at least 2 confirmed victims of this bug; 2 (including me) have provided
lots of info in the link
-I'm on Arch Linux and the other one is on Gentoo (distro-nonspecific)
-issue affects my Windows 10 guest and others' Windows guests, but not my
Arch Linux guest (the others don't have non-Windows guests to test)
-I'm using libvirt but the other user is not, so it's not an issue with
libvirt
-It seems to be version non-specific, too. I first noticed it at, or when
testing versions still had the issue at (whichever version is lower), Linux 4.1
and qemu 2.4.0. It still persists in all releases of both since, including the
newest ones.
-I can't track down exactly what package downgrade can fix it, as downgrading
further than Linux 4.1 and qemu 2.4.0 requires Herculean and system-destroying
changes such as downgrading ncurses, meaning I don't know whether it's a bug in
QEMU, the Linux kernel, or some weird seemingly unrelated thing.
-According to the other user, "graphics intensive gameplay (GTA V) can cause
the crash to happen sooner," as soon as "15 minutes"
-Also, "bringing up a second passthrough VM with separate hardware will cause
the same crash," and "bringing up another VM before the two-hour mark will not
result in a crash," further cementing that it's triggered by the un/binding of
PCI devices.
-This is NOT related to the very similar bug that can be worked around by not
passing through the HDMI device or sound card. Even when we removed all traces
of any sort of sound card from the VM, it still had the same behavior.
To manage notifications about this bug go to:
https://bugs.launchpad.net/libvirt/+bug/1580459/+subscriptions
