Dear Qemu Community,
Hope you are fine. We are facing permission issues when we have added the qemu
command line arguments in
the vm xml file. Please find the attached vm xml file and the snap of
permission issue.For quick reference please see below qemu command line
arguments used in attached xml file.
<qemu:commandline>
<qemu:arg value='-chardev'/>
<qemu:arg value='socket,id=charnet1,path=/tmp/sock-virtio0'/>
<qemu:arg value='-netdev'/>
<qemu:arg value='vhost-user,chardev=charnet1,queues=16,id=hostnet1'/>
<qemu:arg value='-device'/>
<qemu:arg
value='virtio-net-pci,mq=on,vectors=6,netdev=hostnet1,id=net1,mac=e4:11:
c6:d3:45:f2,bus=pci.0,addr=0x6,
page-per-vq=on,rx_queue_size=1024,tx_queue_size=1024'/>
</qemu:commandline>
[cid:b9d6e5a5-70ad-4980-85de-5524f7f576cd]
if we dont pass these qemu command line arguments then VM is successfully
launched but we dont get the virtio interface. Note here that we have tried
this setup on multiple machines but getting same issue. All these
configurations are done through super user. Please advise what we are missing
and how to resolve this permission denied issue. Thanks.
With Regards,
Bilal.
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
<name>bilal_vm1</name>
<uuid>162ed554-9367-45f3-97b8-3ccaf48f117e</uuid>
<metadata>
<libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0";>
<libosinfo:os id="http://ubuntu.com/ubuntu/16.04"/>
</libosinfo:libosinfo>
</metadata>
<memory unit='KiB'>8388608</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<memoryBacking>
<hugepages>
<page size='1048576' unit='KiB'/>
</hugepages>
</memoryBacking>
<vcpu placement='static'>2</vcpu>
<cputune>
<vcpupin vcpu='0' cpuset='0'/>
<vcpupin vcpu='1' cpuset='2'/>
</cputune>
<os>
<type arch='x86_64' machine='pc-i440fx-rhel7.6.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
</features>
<cpu mode='host-model' check='partial'>
<numa>
<cell id='0' cpus='0-1' memory='8388608' unit='KiB' memAccess='shared'/>
</numa>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/bilal_vm1.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<controller type='usb' index='0' model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x7'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci1'>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0' multifunction='on'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci2'>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x1'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci3'>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<interface type='direct'>
<mac address='52:54:00:b8:19:a3'/>
<source dev='eno1' mode='vepa'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</interface>
<serial type='pty'>
<target type='isa-serial' port='0'>
<model name='isa-serial'/>
</target>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<audio id='1' type='none'/>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</memballoon>
</devices>
<qemu:commandline>
<qemu:arg value='-chardev'/>
<qemu:arg value='socket,id=charnet1,path=/tmp/sock-virtio0'/>
<qemu:arg value='-netdev'/>
<qemu:arg value='vhost-user,chardev=charnet1,queues=16,id=hostnet1'/>
<qemu:arg value='-device'/>
<qemu:arg value='virtio-net-pci,mq=on,vectors=6,netdev=hostnet1,id=net1,mac=e4:11: c6:d3:45:f2,bus=pci.0,addr=0x6, page-per-vq=on,rx_queue_size=1024,tx_queue_size=1024'/>
</qemu:commandline>
</domain>
