detach-interface success but domiflist still saw interface
Jiatong Shen
yshxxsjt715 at gmail.com
Tue Nov 29 05:51:26 UTC 2022
Hello community,
Sorry to bring this up again. I have found qemu monitor command qom-list
returned and compare it with live configuration under /var/run (attached at
the end).
qom-list returns only one disk while current xml got two. I tried to
restart libvirt container because I hope reconnect which
calls qemuProcessUpdateDevices
could fix current xml. But it does not.
So my question is 1) should qemuProcessUpdateDevices remove gone devices
from current configuration? 2) what could I do without reboot virtual
machine?
Thank you,
Best,
Jiatong Shen
virsh # qemu-monitor-command instance-00000138 '{"execute": "qom-list",
"arguments": {"path": "/machine/peripheral"}}' --pretty
{
"return": [
{
"name": "virtio-serial0",
"type": "child<virtio-serial-pci>"
},
{
"name": "type",
"type": "string"
},
{
"name": "input0",
"type": "child<usb-tablet>"
},
{
"name": "virtio-disk0",
"type": "child<virtio-blk-pci>"
},
{
"name": "balloon0",
"type": "child<virtio-balloon-pci>"
},
{
"name": "net1",
"type": "child<virtio-net-pci>"
},
{
"name": "net0",
"type": "child<virtio-net-pci>"
},
{
"name": "usb",
"type": "child<piix3-usb-uhci>"
},
{
"name": "serial0",
"type": "child<isa-serial>"
},
{
"name": "channel0",
"type": "child<virtserialport>"
},
{
"name": "video0",
"type": "child<cirrus-vga>"
}
],
"id": "libvirt-255"
}
<domstatus state='running' reason='booted' pid='2613967'>
<taint flag='custom-monitor'/>
<taint flag='custom-ga-command'/>
<monitor
path='/var/lib/libvirt/qemu/domain-111-instance-00000138/monitor.sock'
type='unix'/>
<vcpus>
<vcpu id='0' pid='2614006'/>
<vcpu id='1' pid='2614008'/>
<vcpu id='2' pid='2614009'/>
<vcpu id='3' pid='2614010'/>
<vcpu id='4' pid='2614011'/>
<vcpu id='5' pid='2614012'/>
<vcpu id='6' pid='2614013'/>
<vcpu id='7' pid='2614014'/>
<vcpu id='8' pid='2614015'/>
<vcpu id='9' pid='2614016'/>
<vcpu id='10' pid='2614017'/>
<vcpu id='11' pid='2614018'/>
</vcpus>
<qemuCaps>
<flag name='kvm'/>
<flag name='mem-path'/>
<flag name='drive-serial'/>
<flag name='monitor-json'/>
<flag name='sdl'/>
<flag name='netdev'/>
<flag name='rtc'/>
<flag name='vhost-net'/>
<flag name='no-hpet'/>
<flag name='no-kvm-pit'/>
<flag name='nodefconfig'/>
<flag name='boot-menu'/>
<flag name='fsdev'/>
<flag name='name-process'/>
<flag name='smbios-type'/>
<flag name='spice'/>
<flag name='vga-none'/>
<flag name='boot-index'/>
<flag name='hda-duplex'/>
<flag name='drive-aio'/>
<flag name='ccid-emulated'/>
<flag name='ccid-passthru'/>
<flag name='chardev-spicevmc'/>
<flag name='virtio-tx-alg'/>
<flag name='pci-multifunction'/>
<flag name='virtio-blk-pci.ioeventfd'/>
<flag name='sga'/>
<flag name='virtio-blk-pci.event_idx'/>
<flag name='virtio-net-pci.event_idx'/>
<flag name='cache-directsync'/>
<flag name='piix3-usb-uhci'/>
<flag name='piix4-usb-uhci'/>
<flag name='usb-ehci'/>
<flag name='ich9-usb-ehci1'/>
<flag name='vt82c686b-usb-uhci'/>
<flag name='pci-ohci'/>
<flag name='usb-redir'/>
<flag name='usb-hub'/>
<flag name='no-shutdown'/>
<flag name='cache-unsafe'/>
<flag name='ich9-ahci'/>
<flag name='no-acpi'/>
<flag name='fsdev-readonly'/>
<flag name='virtio-blk-pci.scsi'/>
<flag name='drive-copy-on-read'/>
<flag name='fsdev-writeout'/>
<flag name='drive-iotune'/>
<flag name='system_wakeup'/>
<flag name='scsi-disk.channel'/>
<flag name='scsi-block'/>
<flag name='transaction'/>
<flag name='block-job-async'/>
<flag name='scsi-cd'/>
<flag name='ide-cd'/>
<flag name='no-user-config'/>
<flag name='hda-micro'/>
<flag name='dump-guest-memory'/>
<flag name='nec-usb-xhci'/>
<flag name='balloon-event'/>
<flag name='bridge'/>
<flag name='lsi'/>
<flag name='virtio-scsi-pci'/>
<flag name='blockio'/>
<flag name='disable-s3'/>
<flag name='disable-s4'/>
<flag name='usb-redir.filter'/>
<flag name='ide-drive.wwn'/>
<flag name='scsi-disk.wwn'/>
<flag name='seccomp-sandbox'/>
<flag name='reboot-timeout'/>
<flag name='dump-guest-core'/>
<flag name='seamless-migration'/>
<flag name='block-commit'/>
<flag name='vnc'/>
<flag name='drive-mirror'/>
<flag name='usb-redir.bootindex'/>
<flag name='usb-host.bootindex'/>
<flag name='blockdev-snapshot-sync'/>
<flag name='qxl'/>
<flag name='VGA'/>
<flag name='cirrus-vga'/>
<flag name='vmware-svga'/>
<flag name='device-video-primary'/>
<flag name='usb-serial'/>
<flag name='usb-net'/>
<flag name='add-fd'/>
<flag name='nbd-server'/>
<flag name='virtio-rng'/>
<flag name='rng-random'/>
<flag name='rng-egd'/>
<flag name='dtb'/>
<flag name='megasas'/>
<flag name='ipv6-migration'/>
<flag name='machine-opt'/>
<flag name='machine-usb-opt'/>
<flag name='tpm-passthrough'/>
<flag name='tpm-tis'/>
<flag name='pci-bridge'/>
<flag name='vfio-pci'/>
<flag name='vfio-pci.bootindex'/>
<flag name='scsi-generic'/>
<flag name='scsi-generic.bootindex'/>
<flag name='mem-merge'/>
<flag name='vnc-websocket'/>
<flag name='drive-discard'/>
<flag name='mlock'/>
<flag name='vnc-share-policy'/>
<flag name='device-del-event'/>
<flag name='dmi-to-pci-bridge'/>
<flag name='i440fx-pci-hole64-size'/>
<flag name='q35-pci-hole64-size'/>
<flag name='usb-storage'/>
<flag name='usb-storage.removable'/>
<flag name='virtio-mmio'/>
<flag name='ich9-intel-hda'/>
<flag name='kvm-pit-lost-tick-policy'/>
<flag name='boot-strict'/>
<flag name='pvpanic'/>
<flag name='spice-file-xfer-disable'/>
<flag name='spiceport'/>
<flag name='usb-kbd'/>
<flag name='host-pci-multidomain'/>
<flag name='msg-timestamp'/>
<flag name='active-commit'/>
<flag name='change-backing-file'/>
<flag name='memory-backend-ram'/>
<flag name='numa'/>
<flag name='memory-backend-file'/>
<flag name='usb-audio'/>
<flag name='rtc-reset-reinjection'/>
<flag name='splash-timeout'/>
<flag name='iothread'/>
<flag name='migrate-rdma'/>
<flag name='ivshmem'/>
<flag name='drive-iotune-max'/>
<flag name='VGA.vgamem_mb'/>
<flag name='vmware-svga.vgamem_mb'/>
<flag name='qxl.vgamem_mb'/>
<flag name='pc-dimm'/>
<flag name='machine-vmport-opt'/>
<flag name='aes-key-wrap'/>
<flag name='dea-key-wrap'/>
<flag name='pci-serial'/>
<flag name='vhost-user-multiqueue'/>
<flag name='migration-event'/>
<flag name='ioh3420'/>
<flag name='x3130-upstream'/>
<flag name='xio3130-downstream'/>
<flag name='rtl8139'/>
<flag name='e1000'/>
<flag name='virtio-net'/>
<flag name='gic-version'/>
<flag name='incoming-defer'/>
<flag name='virtio-gpu'/>
<flag name='virtio-keyboard'/>
<flag name='virtio-mouse'/>
<flag name='virtio-tablet'/>
<flag name='virtio-input-host'/>
<flag name='chardev-file-append'/>
<flag name='ich9-disable-s3'/>
<flag name='ich9-disable-s4'/>
<flag name='vserport-change-event'/>
<flag name='virtio-balloon-pci.deflate-on-oom'/>
<flag name='mptsas1068'/>
<flag name='qxl.vram64_size_mb'/>
<flag name='chardev-logfile'/>
<flag name='debug-threads'/>
<flag name='secret'/>
<flag name='pxb'/>
<flag name='pxb-pcie'/>
<flag name='device-tray-moved-event'/>
<flag name='nec-usb-xhci-ports'/>
<flag name='virtio-scsi-pci.iothread'/>
<flag name='name-guest'/>
<flag name='qxl.max_outputs'/>
<flag name='spice-unix'/>
<flag name='drive-detect-zeroes'/>
<flag name='tls-creds-x509'/>
<flag name='display'/>
<flag name='intel-iommu'/>
<flag name='smm'/>
<flag name='virtio-pci-disable-legacy'/>
<flag name='query-hotpluggable-cpus'/>
<flag name='virtio-net.rx_queue_size'/>
<flag name='virtio-vga'/>
<flag name='drive-iotune-max-length'/>
<flag name='ivshmem-plain'/>
<flag name='ivshmem-doorbell'/>
<flag name='query-qmp-schema'/>
<flag name='gluster.debug_level'/>
<flag name='vhost-scsi'/>
<flag name='drive-iotune-group'/>
<flag name='query-cpu-model-expansion'/>
<flag name='virtio-net.host_mtu'/>
<flag name='nvdimm'/>
<flag name='pcie-root-port'/>
<flag name='query-cpu-definitions'/>
<flag name='block-write-threshold'/>
<flag name='query-named-block-nodes'/>
<flag name='cpu-cache'/>
<flag name='qemu-xhci'/>
<flag name='kernel-irqchip'/>
<flag name='kernel-irqchip.split'/>
<flag name='intel-iommu.intremap'/>
<flag name='intel-iommu.caching-mode'/>
<flag name='intel-iommu.eim'/>
<flag name='intel-iommu.device-iotlb'/>
<flag name='virtio.iommu_platform'/>
<flag name='virtio.ats'/>
<flag name='loadparm'/>
<flag name='vnc-multi-servers'/>
<flag name='virtio-net.tx_queue_size'/>
<flag name='chardev-reconnect'/>
<flag name='virtio-gpu.max_outputs'/>
<flag name='vxhs'/>
<flag name='virtio-blk.num-queues'/>
<flag name='vmcoreinfo'/>
<flag name='numa.dist'/>
<flag name='disk-share-rw'/>
<flag name='iscsi.password-secret'/>
<flag name='isa-serial'/>
</qemuCaps>
<devices>
<device alias='virtio-serial0'/>
<device alias='input0'/>
<device alias='virtio-disk0'/>
<device alias='balloon0'/>
<device alias='net1'/>
<device alias='net0'/>
<device alias='usb'/>
<device alias='serial0'/>
<device alias='channel0'/>
<device alias='video0'/>
</devices>
<libDir path='/var/lib/libvirt/qemu/domain-111-instance-00000138'/>
<channelTargetDir
path='/var/lib/libvirt/qemu/channel/target/domain-111-instance-00000138'/>
<allowReboot value='yes'/>
<blockjobs active='no'/>
<agentTimeout>-2</agentTimeout>
<domain type='kvm' id='111'>
<name>instance-00000138</name>
<uuid>0b985bed-ebdd-4334-9477-19a5dab70eb1</uuid>
<metadata>
<nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.0
">
<nova:package version="18.2.3"/>
<nova:name>VSA</nova:name>
<nova:creationTime>2020-09-08 01:12:58</nova:creationTime>
<nova:flavor name="ecs_12C64G200G">
<nova:memory>65536</nova:memory>
<nova:disk>200</nova:disk>
<nova:swap>0</nova:swap>
<nova:ephemeral>0</nova:ephemeral>
<nova:vcpus>12</nova:vcpus>
</nova:flavor>
<nova:owner>
<nova:user
uuid="9ec899ea3a4144dcbc6dccacc1e36645">admin</nova:user>
<nova:project
uuid="f689fa41de3641cb8e4a98046268aa48">HBS</nova:project>
</nova:owner>
</nova:instance>
</metadata>
<memory unit='KiB'>67108864</memory>
<currentMemory unit='KiB'>67108864</currentMemory>
<vcpu placement='static'>12</vcpu>
<cputune>
<shares>12288</shares>
</cputune>
<resource>
<partition>/machine</partition>
</resource>
<sysinfo type='smbios'>
<system>
<entry name='manufacturer'>OpenStack Foundation</entry>
<entry name='product'>OpenStack Nova</entry>
<entry name='version'>18.2.3</entry>
<entry name='uuid'>0b985bed-ebdd-4334-9477-19a5dab70eb1</entry>
<entry name='family'>Virtual Machine</entry>
</system>
</sysinfo>
<os>
<type arch='x86_64' machine='pc-i440fx-bionic'>hvm</type>
<boot dev='hd'/>
<smbios mode='sysinfo'/>
</os>
<features>
<acpi/>
<apic/>
<hyperv>
<relaxed state='on'/>
<vapic state='on'/>
<spinlocks state='on' retries='8191'/>
</hyperv>
</features>
<cpu mode='custom' match='exact' check='full'>
<model fallback='forbid'>Skylake-Client-IBRS</model>
<vendor>Intel</vendor>
<topology sockets='12' cores='1' threads='1'/>
<feature policy='require' name='ss'/>
<feature policy='require' name='hypervisor'/>
<feature policy='require' name='tsc_adjust'/>
<feature policy='require' name='md-clear'/>
<feature policy='require' name='ssbd'/>
<feature policy='require' name='pdpe1gb'/>
<feature policy='disable' name='mpx'/>
<feature policy='disable' name='xsavec'/>
<feature policy='disable' name='xgetbv1'/>
</cpu>
<clock offset='localtime'>
<timer name='pit' tickpolicy='delay'/>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='hpet' present='no'/>
<timer name='hypervclock' present='yes'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback' discard='unmap'/>
<auth username='cinder_eafdd9d8-8fe3-40d1-8fbe-fc81f96f1fd6'>
<secret type='ceph' uuid='eafdd9d8-8fe3-40d1-8fbe-fc81f96f1fd6'/>
</auth>
<source protocol='rbd' name='' tlsFromConfig='0'>
<privateData>
<nodenames>
<nodename type='storage' name='#block034'/>
<nodename type='format' name='#block104'/>
</nodenames>
<objects>
<secret type='auth' alias='virtio-disk0-secret0'/>
</objects>
</privateData>
</source>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06'
function='0x0'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback' discard='unmap'/>
<auth username='cinder_eafdd9d8-8fe3-40d1-8fbe-fc81f96f1fd6'>
<secret type='ceph' uuid='eafdd9d8-8fe3-40d1-8fbe-fc81f96f1fd6'/>
</auth>
<source protocol='rbd' name='cinder.volumes' tlsFromConfig='0'>
<privateData>
<objects>
<secret type='auth' alias='virtio-disk7-secret0'/>
</objects>
</privateData>
</source>
<target dev='vdh' bus='virtio'/>
<alias name='virtio-disk7'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0e'
function='0x0'/>
</disk>
<controller type='usb' index='0' model='piix3-uhci'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
<controller type='virtio-serial' index='0'>
<alias name='virtio-serial0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05'
function='0x0'/>
</controller>
<interface type='bridge'>
<mac address='fa:16:3e:40:1a:19'/>
<source bridge='qbrfbca49dd-ad'/>
<target dev='tapfbca49dd-ad'/>
<model type='virtio'/>
<mtu size='1550'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='fa:16:3e:11:ee:66'/>
<source bridge='qbrdb246b9f-79'/>
<target dev='tapdb246b9f-79'/>
<model type='virtio'/>
<mtu size='1500'/>
<alias name='net1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/11'/>
<log
file='/var/lib/nova/instances/0b985bed-ebdd-4334-9477-19a5dab70eb1/console.log'
append='off'/>
<target type='isa-serial' port='0'>
<model name='isa-serial'/>
</target>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/11'>
<source path='/dev/pts/11'/>
<log
file='/var/lib/nova/instances/0b985bed-ebdd-4334-9477-19a5dab70eb1/console.log'
append='off'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<channel type='unix'>
<source mode='bind'
path='/var/lib/libvirt/qemu/org.qemu.guest_agent.0.instance-00000138.sock'/>
<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>
<input type='tablet' bus='usb'>
<alias name='input0'/>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'>
<alias name='input1'/>
</input>
<input type='keyboard' bus='ps2'>
<alias name='input2'/>
</input>
<graphics type='vnc' port='5911' autoport='yes'
websocketGenerated='no' listen='0.0.0.0'>
<listen type='address' address='0.0.0.0' fromConfig='0'
autoGenerated='no'/>
</graphics>
<video>
<model type='cirrus' vram='16384' heads='1' primary='yes'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
</video>
<memballoon model='virtio'>
<stats period='10'/>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07'
function='0x0'/>
</memballoon>
</devices>
<seclabel type='dynamic' model='dac' relabel='yes'>
<label>+42424:+104</label>
<imagelabel>+42424:+104</imagelabel>
</seclabel>
</domain>
</domstatus>
On Mon, Nov 28, 2022 at 4:43 PM Jiatong Shen <yshxxsjt715 at gmail.com> wrote:
> Thank you very much for the reply. But the interesting thing is that qemu
> monitoring
> command info blocks returns the specified device has been detached while
> virsh domblklist
> still displays the device. So does this imply qemu does not reply to
> libvirt when the device is
> detached?
>
> Best,
> Jiatong Shen
>
> On Thu, Nov 24, 2022 at 10:58 PM Peter Krempa <pkrempa at redhat.com> wrote:
>
>> On Thu, Nov 24, 2022 at 16:47:48 +0800, Jiatong Shen wrote:
>> > Hello Commnunity,
>> >
>> > I saw an weird situation on a phytium machine (arm64 v8), after the
>> > following commands, I can still see the interface which should be
>> > successfully detached.
>> >
>> > virsh # detach-interface 4a365b06-2597-4c17-8b44-dbb6953f9ced bridge
>> --mac
>> > fa:16:3e:c5:62:40
>> > Interface detached successfully
>> >
>> > Future qmp commands shows, that a device hostnet23 exists but seems no
>> > front end device exists.
>> >
>> > So what could be the problem? Thank you very much.
>>
>> The man page for virsh states for the 'detach-interface' command:
>>
>> "Please see documentation for detach-device for known quirks."
>>
>> And the 'quirks' part of 'detach-device':
>>
>> Quirk: Device unplug is asynchronous in most cases and requires guest
>> cooperation. This means that it's up to the discretion of the guest to
>> disallow or delay the unplug arbitrarily. As the libvirt API used in
>> this command was designed as synchronous it returns success after some
>> timeout even if the device was not unplugged yet to allow further in‐
>> teractions with the domain e.g. if the guest is unresponsive. Callers
>> which need to make sure that the device was unplugged can use libvirt
>> events (see virsh event) to be notified when the device is removed.
>> Note that the event may arrive before the command returns.
>>
>>
>
> --
>
> Best Regards,
>
> Jiatong Shen
>
--
Best Regards,
Jiatong Shen
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