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>
<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@xxxxxxxxx> wrote:
Thank you very much for the reply. But the interesting thing is that qemu monitoringcommand info blocks returns the specified device has been detached while virsh domblkliststill displays the device. So does this imply qemu does not reply to libvirt when the device isdetached?Best,Jiatong ShenOn Thu, Nov 24, 2022 at 10:58 PM Peter Krempa <pkrempa@xxxxxxxxxx> 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
