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[libvirt-users] Can't shutdown/reboot Windows 10 guest if on lock screen
by Sebastian Arcus 05 Mar '18

05 Mar '18

I am running Windows 10 vms on a Linux host with libvirt 4.0.0 and qemu 2.10.2 I can shutdown and reboot the Windows 10 guests if the no user is logged in the vm, or if the user is logged in and active/seeing the desktop. But after a while, when the lock screen kicks in (but the user is still logged in technically), the shutdown and reboot commands don't have any effect any more. Is there any way around this (except for disabling automatic screen locking on Windows)? Thank you for any hints.

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[libvirt-users] How can we achieve vga emulation over a serial port in libvirt
by Meina Li 05 Mar '18

05 Mar '18

Hi For the latest seabios version, it said: Support for vga emulation over a serial port in SeaBIOS (sercon). So I want to know how can I find the application of this feature in libvirt? And whether my understanding is correct? There are no related instruction on the website: https://libvirt.org/ My understanding: (1) The feature means: we can set this the IO address of a serial port to "video" element to enable SeaBIOS' VGA adapter emulation on the given serial port. (2) Libvirt XML examples and with this xml the guest can start successfully: <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </controller> <video> <model type='vga' vram='16384' heads='1' primary='yes'/> <address type='virtio-serial' controller='0' bus='0' port='3'/> </video> Thank in advance. Best Regards Meina Li

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[libvirt-users] NIC cannot unplug
by llilulu 05 Mar '18

05 Mar '18

Hi: I encounter a promble, when I start a domain(only a blank disk, not install system), I can hotplug NIC, But I cannot hot unplug NIC. I consider the domain start from a blank disk, not install system, so the domain haven't virtio too, I suspect virtio problem. But I cann't confirm. Can any one tell me? Thanks

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[libvirt-users] Libvirt supported qemu-ga commands
by procmem 01 Mar '18

01 Mar '18

Where can I find the full list of libvirt supported qemu-ga commands? The docs [0] imply virDomainQemuAgentCommand bypasses libvirt and is not recommended. I am looking to pass suspend/resume events from the host to the guest and then have the guest act on this internally. Your help is appreciated. [0] https://wiki.libvirt.org/page/Qemu_guest_agent

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[libvirt-users] Reply: Fail in virDomainUpdateDeviceFlags (libvirt-4.0.0 + Qemu-kvm 2.9.0 + Ceph 10.2.10)
by Star Guo 01 Mar '18

01 Mar '18

Dear Michal After I fix the local libvirt master branch follow your patch, and build rpm for CentOS 7.4. virDomainUpdateDeviceFlags as bellow: ================================================ 2018-02-27 09:27:43.782+0000: 16656: debug : virDomainUpdateDeviceFlags:8326 : dom=0x7f2084000c50, (VM: name=6ec499397d594e f2a64fcfc938f38225, uuid=6ec49939-7d59-4ef2-a64f-cfc938f38225), xml=<disk device="cdrom" type="network"><source name="zstac k/08085a31f8c43f278ed2f649ee166b1f@08085a31f8c43f278ed2f649ee166b1f" protocol="rbd"><host name="10.0.229.181" port="6789" / ></source><auth username="zstack"><secret type="ceph" uuid="9b06bb70-dc13-4338-88fd-b0c72d5ab9e9" /></auth><target bus="ide " dev="hdc" /><readonly /></disk>, flags=0x1 ... 2018-02-27 09:27:43.788+0000: 16656: info : virObjectNew:254 : OBJECT_NEW: obj=0x7f2084003cc0 classname=qemuDomainStorageSourcePrivate 2018-02-27 09:27:43.788+0000: 16656: debug : virConnectOpen:1169 : name=secret:///system 2018-02-27 09:27:43.788+0000: 16656: info : virObjectNew:254 : OBJECT_NEW: obj=0x7f20840008c0 classname=virConnect 2018-02-27 09:27:43.788+0000: 16656: debug : virConfLoadConfig:1576 : Loading config file '/etc/libvirt/libvirt.conf' 2018-02-27 09:27:43.788+0000: 16656: debug : virConfReadFile:752 : filename=/etc/libvirt/libvirt.conf 2018-02-27 09:27:43.788+0000: 16656: debug : virFileClose:110 : Closed fd 28 2018-02-27 09:27:43.788+0000: 16656: debug : virConfGetValueStringList:946 : Get value string list (nil) 0 2018-02-27 09:27:43.788+0000: 16656: debug : virConnectOpenInternal:1033 : Split "secret:///system" to URI components: scheme secret server <null> user <null> port 0 path /system .. 2018-02-27 09:27:43.788+0000: 16656: info : virObjectRef:388 : OBJECT_REF: obj=0x563fa24f2360 2018-02-27 09:27:43.788+0000: 16656: info : virObjectUnref:350 : OBJECT_UNREF: obj=0x563fa24f2360 2018-02-27 09:27:43.788+0000: 16656: debug : virConnectOpenInternal:1098 : driver 7 secret returned SUCCESS 2018-02-27 09:27:43.788+0000: 16656: error : qemuDomainGetSecretAESAlias:729 : invalid argument: encrypted secret alias requires valid source alias 2018-02-27 09:27:43.788+0000: 16656: info : virObjectUnref:350 : OBJECT_UNREF: obj=0x7f20840008c0 2018-02-27 09:27:43.788+0000: 16656: info : virObjectUnref:352 : OBJECT_DISPOSE: obj=0x7f20840008c0 2018-02-27 09:27:43.788+0000: 16656: info : virObjectUnref:350 : OBJECT_UNREF: obj=0x7f2030101cb0 2018-02-27 09:27:43.788+0000: 16656: debug : qemuDomainObjEndJob:5594 : Stopping job: modify (async=none vm=0x7f20300fa6e0 name=6ec499397d594ef2a64fcfc938f38225) ====================================================== But it fails. Best Regards, Star Guo -----邮件原件----- 发件人: Michal Privoznik [mailto:mprivozn@redhat.com] 发送时间: 2018年2月27日 16:53 收件人: Star Guo <starg(a)ceph.me>; libvirt-users(a)redhat.com 抄送: John Ferlan <jferlan(a)redhat.com> 主题: Re: [libvirt-users] Fail in virDomainUpdateDeviceFlags (libvirt-4.0.0 + Qemu-kvm 2.9.0 + Ceph 10.2.10) On 02/27/2018 03:06 AM, Star Guo wrote: > Hello Everyone, > > > > My pc run in CentOS 7.4 and install libvirt-4.0.0 + Qemu-kvm 2.9.0 + > Ceph > 10.2.10 ALL-in-One. > > > > I use python-sdk with libvirt and run > [self.domain.updateDeviceFlags(xml, > libvirt.VIR_DOMAIN_AFFECT_LIVE)] on CDROM (I want to change media path). > However, I enable libvirt debug log , the log as below: > > <snip/> > > I see the flow is virDomainUpdateDeviceFlags -> > qemuMonitorChangeMedia, but the cephx auth is drop, so make update error. Anybody meet this error? Yes, this is a libvirt bug. I think this fixes the issue: diff --git i/src/qemu/qemu_driver.c w/src/qemu/qemu_driver.c index 96454c17c..0e5ad9971 100644 --- i/src/qemu/qemu_driver.c +++ w/src/qemu/qemu_driver.c @@ -7842,6 +7842,8 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm, virQEMUDriverPtr driver, bool force) { + virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); + qemuDomainObjPrivatePtr priv = vm->privateData; virDomainDiskDefPtr disk = dev->data.disk; virDomainDiskDefPtr orig_disk = NULL; virDomainDeviceDef oldDev = { .type = dev->type }; @@ -7850,6 +7852,9 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm, if (virDomainDiskTranslateSourcePool(disk) < 0) goto cleanup; + if (qemuDomainPrepareDiskSource(disk, priv, cfg) < 0) + goto cleanup; + if (qemuDomainDetermineDiskChain(driver, vm, disk, false, true) < 0) goto cleanup; @@ -7898,6 +7903,7 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm, ret = 0; cleanup: + virObjectUnref(cfg); return ret; } Can you check and confirm? Michal

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[libvirt-users] QEMU guest-agent safety in hostile VM?
by procmem 28 Feb '18

28 Feb '18

Hi. Is it still considered risky to use the QEMU guest agent in an untrusted guest? A warning on these lines was written in the manual a few years back when the feature made its debut. I wanted to know if it was hardened since.

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[libvirt-users] Install of Libvirt-snmp
by Michael Cooper 26 Feb '18

26 Feb '18

Hello Everyone, This is my first time here and I have a question. Where is it installed? I am assuming on the KVM Host itself? I am sorry if this is a stupid question thanks. -- Michael A Cooper Linux Certified Zerto Certified http://www.coopfire.com

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[libvirt-users] "scripts are not supported on interfaces of type vhostuser" error
by Riccardo Ravaioli 23 Feb '18

23 Feb '18

Hi, I'm having trouble starting a VM with vhostuser interfaces. I have a simple configuration where a VM running Debian has 1 vhostuser interface plugged into an OVS switch where a DPDK interface is already plugged in. $ ovs-vsctl show: Bridge "switch1" Port "switch1" Interface "switch1" type: internal Port "1.switch1" Interface "1.switch1" type: dpdk options: {dpdk-devargs="0000:0b:00.0"} Port "0.switch1" Interface "0.vm" type: dpdkvhostuserclient options: {vhost-server-path="/opt/oa/vhost/0.vm.sock"} The relevant excerpt from the XML of my VM is: <?xml version="1.0" ?> <domain type="kvm" xmlns:ns0="http://libvirt.org/schemas/domain/qemu/1.0">  <devices> <emulator>/opt/oa/bin/qemu-system-x86_64</emulator>  <interface type="vhostuser"> <script path="/opt/oa/etc/qemu-ifup"/> <source mode="server" path="/opt/oa/vhost/0.vm.sock" type="unix"/> <mac address="52:54:00:41:37:08"/> <model type="virtio"/> <driver queues="1"> <host csum="off"/> </driver> </interface>  </devices> <ns0:commandline> <ns0:arg value="-object"/> <ns0:arg value="memory-backend-file,id=mem,size=2G,mem-path=/dev/hugepages,share=on"/> <ns0:arg value="-numa"/> <ns0:arg value="node,memdev=mem"/> <ns0:arg value="-mem-prealloc"/> </ns0:commandline> </domain> Now, if I try to start my VM, I get the following error and the VM is not started at all: $ virsh create vm.xml error: Failed to create domain from vm.xml error: unsupported configuration: scripts are not supported on interfaces of type vhostuser The logs from libvirtd.log say: 2018-02-22 09:18:24.982+0000: 2033: warning : qemuProcessStartWarnShmem:4539 : Detected vhost-user interface without any shared memory, the interface might not be operational 2018-02-22 09:18:24.982+0000: 2033: error : qemuBuildHostNetStr:3894 : unsupported configuration: scripts are not supported on interfaces of type vhostuser The logs from qemu simply say: 2018-02-22 09:26:15.857+0000: shutting down, reason=failed And finally, ovs-vswitchd.log: 2018-02-22T09:18:24.715Z|00328|dpdk|INFO|VHOST_CONFIG: vhost-user client: socket created, fd: 51 2018-02-22T09:18:24.716Z|00329|netdev_dpdk|INFO|vHost User device '0.vm' created in 'client' mode, using client socket '/opt/oa/vhost/0.vm.sock' 2018-02-22T09:18:24.718Z|00330|dpdk|WARN|VHOST_CONFIG: failed to connect to /opt/oa/vhost/0.vm.sock: No such file or directory 2018-02-22T09:18:24.718Z|00331|dpdk|INFO|VHOST_CONFIG: /opt/oa/vhost/0.vm.sock: reconnecting... 2018-02-22T09:18:24.718Z|00332|bridge|INFO|bridge switch1: added interface 0.vm on port 5 Am I missing something on the openvswitch or on the libvirt side? It looks like openvswitch can't find /opt/oa/vhost/0.vm.sock, but isn't either openvswitch or libvirt in charge of creating it? Then, I'm not too sure about the error messages in libvirtd.log... My software versions are: libvirt 3.10.0, qemu 2.10.2, openvswitch 2.8.1 and DPDK 17.11. Thanks a lot! Riccardo

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[libvirt-users] How to use rtc_timeoffset (XL toolkit option) in Libvirt and Xen/libxl hypervisor?
by Volo M. 21 Feb '18

21 Feb '18

Hello techs, We used XL toolkit for Xen hypervisor for starting Windows hvm VMs and the option rtc_timeoffset worked perfectly with XL. It helped us to set correct Timezone time/offset for Windows HVM VMs from inside virtual_machine xen config. For example: Below option WORKS perfectly with XL toolkit. [root@hw12xen ~]# cat goillltawdlssq.xl.cfg | grep offset rtc_timeoffset = "7200" # +2 hours to UTC time (or +/-3600=+/-1 hour to UTC time) [root@hw12xen ~]# Now we try to migrate all the Windows hvm VMs to using Libvirt and Xen 4.6.6 (or 4.4). But as we see it's impossible to make VMs using correct time/offset set in XML config like below: below Libvirt option DOESN'T WORK as we expect... [root@hw12xen ~]# cat goillltawdlssq.var.xml | grep offset <clock offset='variable' adjustment='7200' /> [root@hw12xen ~]# Can you please explain if there's something we're doing wrong way or it's just a bug like described here: https://bugzilla.redhat.com/show_bug.cgi?id=1212191 ? Thanks in advance.

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[libvirt-users] ANNOUNCE: ruby-libvirt 0.7.1
by Chris Lalancette 18 Feb '18

18 Feb '18

I'm pleased to release ruby-libvirt 0.7.1. ruby-libvirt is a ruby wrapper around the libvirt API. The changelog between 0.7.0 and 0.7.1 is: * Fix a bad bug in block_resize (Marius Rieder) * Fix up some problems pointed out by clang * Fix up the tests for small semantic differences in how libvirt works Version 0.7.1 is available from http://libvirt.org/ruby: Tarball: http://libvirt.org/ruby/download/ruby-libvirt-0.7.1.tgz Gem: http://libvirt.org/ruby/download/ruby-libvirt-0.7.1.gem It is also available from rubygems.org; to get the latest version, run: $ gem install ruby-libvirt Packages for it are also built for Fedora, and will be released shortly. As usual, if you run into questions, problems, or bugs, please feel free to mail me (clalancette at gmail.com) and the libvirt mailing list. Thanks to those who contributed to this release.

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