May 2020 - Users - libvirt List Archives

Running libvirtd inside chroot (mock to be precise)
by Marcin Sobczyk 13 May '20

13 May '20

Hi, I was wondering whether it's possible to run libvirtd inside a chroot environment. The assumption is that only one instance of libvirtd would be running on the machine at a time, but still, inside chroot. Currently in my chroot env I have: - /dev/kvm added with mknod - /dev/vhost-net added with mknod - mounted: - /dev/net - /dev/shm - /run/dbus When I run libvirtd in non-daemon mode I get one error: 2020-05-13 10:06:27.480+0000: 28555: error : virNetDevBridgeCreate:484 : error creating bridge interface virbr0: File exists but it seems to me that libvirtd can live with that. When I try to run a VM however I get a qemu error reported: 2020-05-13 08:56:51.643+0000: starting up libvirt version: 4.5.0, package: 35.3.module_el8.1.0+297+df420408 (CentOS Buildsys <bugs(a)centos.org>, 2020-04-10-11:06:38, ), qemu version: 2.12.0qemu-kvm-2.12.0-88.module_el8.1.0+297+df420408.3, kernel: 4.18.0-80.el8.x86_64, hostname: ..... LC_ALL=C PATH=/var/lib/ci_toolbox:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin HOME=/root/ovirt-system-tests USER=root LOGNAME=root QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name guest=992415aa-lago-basic-suite-master-engine,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-1-992415aa-lago-basic-/master-key.aes -machine pc-i440fx-rhel7.6.0,accel=kvm,usb=off,vmport=off,dump-guest-core=off -cpu host -m 4096 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -object iothread,id=iothread1 -numa node,nodeid=0,cpus=0,mem=2048 -numa node,nodeid=1,cpus=1,mem=2048 -uuid 10ed4b42-bb14-4b03-a411-c62fb1181c2d -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=31,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot menu=off,strict=on -device virtio-scsi-pci,iothread=iothread1,id=scsi0,num_queues=2,bus=pci.0,addr=0x5 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive file=/root/ovirt-system-tests/deployment-basic-suite-master/default/images/lago-basic-suite-master-engine_root.qcow2,format=qcow2,if=none,id=drive-virtio-disk0,serial=1,cache=writeback,discard=unmap -device virtio-blk-pci,iothread=iothread1,scsi=off,num-queues=1,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1,write-cache=on -drive file=/root/ovirt-system-tests/deployment-basic-suite-master/default/images/lago-basic-suite-master-engine_nfs.raw,format=raw,if=none,id=drive-scsi0-0-0-0,serial=2,cache=writeback,discard=unmap -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,write-cache=on -drive file=/root/ovirt-system-tests/deployment-basic-suite-master/default/images/lago-basic-suite-master-engine_iscsi.raw,format=raw,if=none,id=drive-scsi0-0-0-2,serial=3,cache=writeback,discard=unmap -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=2,drive=drive-scsi0-0-0-2,id=scsi0-0-0-2,write-cache=on -netdev tap,fds=33:34,id=hostnet0,vhost=on,vhostfds=35:36 -device virtio-net-pci,mq=on,vectors=6,netdev=hostnet0,id=net0,mac=54:52:c0:a8:c8:02,bus=pci.0,addr=0x3 -netdev tap,fds=37:38,id=hostnet1,vhost=on,vhostfds=39:40 -device virtio-net-pci,mq=on,vectors=6,netdev=hostnet1,id=net1,mac=54:52:c0:a8:ca:02,bus=pci.0,addr=0x4 -chardev socket,id=charchannel0,fd=41,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -chardev pty,id=charconsole0 -device virtconsole,chardev=charconsole0,id=console0 -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -object rng-random,id=objrng0,filename=/dev/urandom -device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x9 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny -msg timestamp=on 2020-05-13 08:56:51.643+0000: Domain id=1 is tainted: high-privileges 2020-05-13 08:56:51.643+0000: Domain id=1 is tainted: host-cpu libvirt: QEMU Driver error : internal error: Unable to find any /dev mount 2020-05-13 08:56:51.654+0000: shutting down, reason=failed And this one currently is blocking me. Did anyone try such a setup? Any help would be appreciated. Regards, Marcin

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blockcommit --pivot does not succeed in conjunction with qemu 5.0.0
by Thomas Stein 11 May '20

11 May '20

Hello one and all. Got a problem with libvirt 6.2.0 and qemu 5.0.0. virsh blockcommit mymachine vda --active --verbose --pivot works until it shows [100%] but it never actually pivots. It just sits there. Is this a known issue with 6.2.0 and i should try 6.3.0? For now i switched back to qemu 4.2.0 and this seems to solve the issue too. Any hints? Ahoi! t.

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Nested Virtualization on Google Cloud.
by Tanmoy Sinha 10 May '20

10 May '20

I am using nested virtualization on a Google Cloud Compute instance. Things are generally working fine with libvirt using qemu+kvm, however I observed that <cpu mode='host-model'> is not exposing avx and avx2 instruction set to the guest Linux instance. Google Cloud platform claims the CPU model of the host compute instance is Broadwell, however libvirt capabilities maps it to Westmere-IBRS and it has avx and avx2 features, yet host-model is not exposing those. As a workaround, I am using <cpu mode='host-passthrough'>, but I would like to know what is going wrong here? I can also share the output of cpuid of the host system, if that helps. I am not sure whether it's a libvirt issue or something to do with KVM. Any help would be appreciated. Following is the host information, along with the qemu process details for the linux guest. root@dev-vm:~# kvm --version QEMU emulator version 2.8.1(Debian 1:2.8+dfsg-6+deb9u9) Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers root@dev-vm:~# virsh --version setlocale: No such file or directory 3.0.0 root@dev-vm:~# virsh capabilities <capabilities> <host> <uuid>a2b6c5d9-dfea-7efb-defb-3cce3aadb067</uuid> <cpu> <arch>x86_64</arch> <model>*Westmere-IBRS*</model> <vendor>Intel</vendor> <topology sockets='1' cores='4' threads='2'/> <feature name='vme'/> <feature name='ss'/> <feature name='ht'/> <feature name='pclmuldq'/> <feature name='vmx'/> <feature name='fma'/> <feature name='pcid'/> <feature name='x2apic'/> <feature name='movbe'/> <feature name='xsave'/> <feature name='osxsave'/> <feature name='avx'/> <feature name='f16c'/> <feature name='rdrand'/> <feature name='hypervisor'/> <feature name='arat'/> <feature name='fsgsbase'/> <feature name='tsc_adjust'/> <feature name='bmi1'/> <feature name='hle'/> <feature name='avx2'/> <feature name='smep'/> <feature name='bmi2'/> <feature name='erms'/> <feature name='invpcid'/> <feature name='rtm'/> <feature name='rdseed'/> <feature name='adx'/> <feature name='smap'/> <feature name='md-clear'/> <feature name='ssbd'/> <feature name='xsaveopt'/> <feature name='pdpe1gb'/> <feature name='rdtscp'/> <feature name='abm'/> <feature name='3dnowprefetch'/> <feature name='invtsc'/> <pages unit='KiB' size='4'/> <pages unit='KiB' size='2048'/> <pages unit='KiB' size='1048576'/> </cpu> <power_management> <suspend_mem/> <suspend_disk/> <suspend_hybrid/> </power_management> <migration_features> <live/> <uri_transports> <uri_transport>tcp</uri_transport> 15771 ? Sl 0:03 qemu-system-x86_64 -enable-kvm -name guest=Util-LIN-1,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-11-Util-LIN-1/master-key.aes -machine pc-i440fx-2.1,accel=kvm,usb=off,dump-guest-core=off -cpu *Westmere-IBRS* ,+vme,+ss,+ht,+pclmuldq,+vmx,+fma,+pcid,+x2apic,+movbe,+xsave,+osxsave, *+avx,*+f16c,+rdrand,+hypervisor,+arat,+fsgsbase,+tsc_adjust,+bmi1,+hle, *+avx2*,+smep,+bmi2,+erms,+invpcid,+rtm,+rdseed,+adx,+smap,+md-clear,+ssbd,+xsaveopt,+pdpe1gb,+rdtscp,+abm,+3dnowprefetch -m 4096 -realtime mlock=off -smp 4,sockets=4,cores=1,threads=1 -uuid caa60e3c-f946-40a4-80ac-1fb86366c5f6 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-11-Util-LIN-1/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device ahci,id=sata0,bus=pci.0,addr=0x4 -drive file=/var/lib/libvirt/images/Util-LIN-1/Util-LIN-1.qcow2,format=qcow2,if=none,id=drive-sata0-0-0 -device ide-hd,bus=sata0.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1 -drive file=/var/lib/libvirt/images/Util-LIN-1/Util-LIN-1-acdisk.qcow2,format=qcow2,if=none,id=drive-sata0-0-2 -device ide-hd,bus=sata0.2,drive=drive-sata0-0-2,id=sata0-0-2 -netdev tap,fd=34,id=hostnet0,vhost=on,vhostfd=36 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=1a:b2:ae:f7:69:c7,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0,bus=usb.0,port=1 -vnc 0.0.0.0:8 -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -incoming defer -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on Regards Tanmoy Sinha

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Libvirt APIs for creating virtual networks
by Santhosh Kumar Gunturu 08 May '20

08 May '20

I am using the Libvirt APIs to create the virtual networks to use the dnsmasq capabilities. I want to understand the APIs how to set the lease time in XML to control the dnsmasq lease time. Also, I need some DHCP statistics on the virtual network. Is there any API available to fetch the statistics ? Please let me know if any ? Thanks & Regards Santhosh Kumar Gunturu

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Further DKIM testing validation
by dberrange＠yahoo.com 07 May '20

07 May '20

Please ignore this mail too.

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Testing email DKIM handling
by dberrange＠yahoo.com 07 May '20

07 May '20

Please ignore this test message. Validating whether the mailing list is still breaking DKIM signed messages.

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virsh connect to xen:///system fails: "error: internal error: Unexpected driver type 'Xen' opened" ?
by PGNet Dev 04 May '20

04 May '20

I'm setting up for libvirt remote access on a xend host. On the host, xl info | egrep "release|xen_version" release : 5.6.10-24.gde48f93-default xen_version : 4.13.0_12-lp151.700 systemctl --version systemd 234 I've installed rpm -qa libvirt-daemon-xen libvirt-daemon-xen-6.2.0-lp151.890.1.x86_64 libvirtd --version libvirtd (libvirt) 6.2.0 virsh --version 6.2.0 Per https://libvirt.org/daemons.html I've setup for use of modular daemons with systemd sockets, rather than monolithic libvirtd systemctl list-units | egrep " virt" virtxend.service loaded active running Virtualization xen daemon virtlockd.socket loaded active listening Virtual machine lock manager socket virtlogd.socket loaded active listening Virtual machine log manager socket virtnetworkd-admin.socket loaded active listening Libvirt network admin socket virtnetworkd-ro.socket loaded active listening Libvirt network local read-only socket virtnetworkd.socket loaded active listening Libvirt network local socket virtnodedevd-admin.socket loaded active listening Libvirt nodedev admin socket virtnodedevd-ro.socket loaded active listening Libvirt nodedev local read-only socket virtnodedevd.socket loaded active listening Libvirt nodedev local socket virtnwfilterd-admin.socket loaded active listening Libvirt nwfilter admin socket virtnwfilterd-ro.socket loaded active listening Libvirt nwfilter local read-only socket virtnwfilterd.socket loaded active listening Libvirt nwfilter local socket virtproxyd-admin.socket loaded active listening Libvirt proxy admin socket virtproxyd-ro.socket loaded active listening Libvirt proxy local read-only socket virtproxyd.socket loaded active listening Libvirt proxy local socket virtsecretd-admin.socket loaded active listening Libvirt secret admin socket virtsecretd-ro.socket loaded active listening Libvirt secret local read-only socket virtsecretd.socket loaded active listening Libvirt secret local socket virtstoraged-admin.socket loaded active listening Libvirt storage admin socket virtstoraged-ro.socket loaded active listening Libvirt storage local read-only socket virtstoraged.socket loaded active listening Libvirt storage local socket virtxend-admin.socket loaded active running Libvirt libxl admin socket virtxend-ro.socket loaded active running Libvirt libxl local read-only socket virtxend.socket loaded active running Libvirt libxl local socket /tree /run/libvirt/ /run/libvirt/ ├── hostdevmgr ├── libvirt-admin-sock ├── libvirt-sock ├── libvirt-sock-ro ├── libxl │ ├── autostarted │ ├── Domain-0.xml │ └── driver.pid ├── network │ ├── autostarted │ └── nwfilter.leases ├── nodedev ├── nwfilter ├── nwfilter-binding ├── qemu │ ├── autostarted │ └── slirp ├── secrets ├── storage │ └── autostarted ├── virtlockd-sock ├── virtlogd-sock ├── virtnetworkd-admin-sock ├── virtnetworkd-sock ├── virtnetworkd-sock-ro ├── virtnodedevd-admin-sock ├── virtnodedevd-sock ├── virtnodedevd-sock-ro ├── virtnwfilterd-admin-sock ├── virtnwfilterd-sock ├── virtnwfilterd-sock-ro ├── virtsecretd-admin-sock ├── virtsecretd-sock ├── virtsecretd-sock-ro ├── virtstoraged-admin-sock ├── virtstoraged-sock ├── virtstoraged-sock-ro ├── virtxend-admin-sock ├── virtxend-sock └── virtxend-sock-ro On the server, TLS certs are in place openssl version OpenSSL 1.1.1g 21 Apr 2020 cat /etc/libvirt/libvirt.conf ca_file = "/sec/ssl/CA/CA.CHAIN.crt.pem" cert_file = "/sec/ssl/libvirt/client.EC.crt.pem" key_file = "/sec/ssl/libvirt/client.EC.key.pem" cat /etc/libvirt/virtproxyd.conf ca_file = "/sec/ssl/CA/CA.CHAIN.crt.pem" cert_file = "/sec/ssl/libvirt/server.EC.crt.pem" key_file = "/sec/ssl/libvirt/server.EC.key.pem" On attempt to first _locally_ connect, virsh -c test:///default list sysinfo Id Name State ---------------------- 1 test running virsh -c test:///default sysinfo <sysinfo type='smbios'> <bios> <entry name='vendor'>LENOVO</entry> <entry name='version'>G4ETA1WW (2.61 )</entry> <entry name='date'>05/07/2014</entry> <entry name='release'>2.61</entry> </bios> </sysinfo> but virsh -c xen:///system?socket=/var/run/libvirt/libvirt-sock error: failed to connect to the hypervisor error: internal error: Unexpected driver type 'Xen' opened What's missing/incorrect in my config, causing the "Unexpected driver" error, and preventing the connect to local hypervisor?

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