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Activate storage during domain migration
by e-m＠mailbox.org 26 Oct '23

26 Oct '23

Hi, I have a block storage which I only want to be mounted on a single node. I know that there are many possibilities for shared storage usage but I want to know if the following is possible (using the API). - Have a domain running on node-A - Initialize a migration for that domain to node-B - Run a hook or something just before the domain starts on node-B to: - unmount storage on node-A - mount/prepare storage on node-B Thanks and best regards, Etienne

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Libvirt
by Gk Gk 26 Oct '23

26 Oct '23

Hi All, I am trying to collect memory, disk and network stats for a VM on kvm host. It seems that the statistics are not matching what the OS inside the VM is reporting. Why is this discrepancy ? Is this a known bug of libvirt ? Also I heard that libvirt shows cumulative figures for these measures ever since the VM was created. Also I tested by creating a new vm and comparing the stats without a reboot . Even in this case, the stats dont agree. Can someone help me here please ? Thanks Kumar

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help,virsh start vm failed
by 展荣臻（信泰） 26 Oct '23

26 Oct '23

Hello,all I start vm failed as show below: ()[root@com1 tmp]# virsh start centos error: Failed to start domain centos error: Start job for unit machine-qemu\x2d1\x2dcentos.scope failed with 'failed' as the same time error "2021-02-27 08:58:31.688+0000: 22: error : virSystemdCreateMachine:361 : Start job for unit machine-qemu\x2d4\x2dcentos.scope failed with 'failed' " in libvirt.log. How I dig into this question.thanks

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Can't start vm with enc backing files, No secret with id 'sec0' ?
by 18781374080 26 Oct '23

26 Oct '23

Hey, guys I've been working on whether libvirt supports encrypted snapshots,Here are my versions of libvirt and qemu [root@xx ~]# libvirtd -V libvirtd (libvirt) 4.5.0 [root@xx ~]# qemu-img -V qemu-img version 2.12.0 (qemu-kvm-ev-2.12.0-33.1.el7_7.4) Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers 1. assign $MYSECRET to libvirt secret using the secret-define and secret-set-value commands,and $MYSECRET is in base64 format MYSECRET=`printf %s "123456" | base64` 2. created a disk encrypted in luks format qemu-img create --object secret,id=sec0,data=$MYSECRET,format=base64 -f qcow2 -o encrypt.format=luks,encrypt.key-secret=sec0 enc.qcow220G 3. The encrypted disk is defined in the XML configuration file, as shown below.Then I successfully started the virtual machine. <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/root/enc.qcow2'/> <backingStore/> <target dev='hda' bus='ide'/> <encryption format='luks'> <secret type='passphrase' uuid='694bdf38-214e-48d3-8c4c-9dbbcf0f5fa0'/> </encryption> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> 4. According to the qemu documentation, an encrypted snap.qcow2 disk was created with enc.qcow2 as backing qemu-img create -f qcow2 -F qcow2 --object secret,id=sec0,data=$MYSECRET,format=base64 --object secret,id=sec1,data=$MYSECRET,format=base64 -o encrypt.format=luks,encrypt.key-secret=sec1 -b 'json:{"encrypt.key-secret": "sec0", "driver": "qcow2", "file": {"driver": "file", "filename": "/root/enc/enc.qcow2"}}' snap.qcow2 I used the same $MYSECRET as the password data for the disk. Here is the disk information for snap.qcow2 image: snap.qcow2 file format: qcow2 virtual size: 20G (21474836480 bytes) disk size: 480K encrypted: yes cluster_size: 65536 backing file: json:{"encrypt.key-secret": "sec0", "driver": "qcow2", "file": {"driver": "file", "filename": "/root//enc.qcow2"}} backing file format: qcow2 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 encrypt: ivgen alg: plain64 hash alg: sha256 cipher alg: aes-256 uuid: ab0e3f87-35e7-40cb-9888-9fe9bb54e981 format: luks cipher mode: xts slots: [0]: active: true iters: 115582 key offset: 4096 stripes: 4000 [1]: active: false key offset: 262144 [2]: active: false key offset: 520192 [3]: active: false key offset: 778240 [4]: active: false key offset: 1036288 [5]: active: false key offset: 1294336 [6]: active: false key offset: 1552384 [7]: active: false key offset: 1810432 payload offset: 2068480 master key iters: 30085 corrupt: false 5. Then I changed the configuration of the XML, as shown below.And re-define and start the virtual machine <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/root/snap.qcow2'/> <backingStore type='file'> <format type='qcow2'/> <source file='/root/enc.qcow2'/> <backingStore/> </backingStore> <target dev='hda' bus='ide'/> <encryption format='luks'> <secret type='passphrase' uuid='694bdf38-214e-48d3-8c4c-9dbbcf0f5fa0'/> </encryption> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> Then the startup failed and an error was thrown. As shown below. qemu-kvm: -drive file=/root/enc/vm/enc-snap.qcow2,encrypt.format=luks,encrypt.key-secret=ide0-0-0-luks-secret0,format=qcow2,if=none,id=drive-ide0-0-0: Could not open backing file: No secret with id 'sec0' The sec0 secret id could not be found in the backing file, this is my problem. Is there a problem with the way I implemented it, or does libvirt currently not support this? Any tips or help will be appreciated, Looking forward to your reply. Thank you | | 18781374080 | | 18781374080(a)163.com | 签名由网易邮箱大师定制

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[libvirt-users] How can I rebase network disk?
by Boxiang Zhu 26 Oct '23

26 Oct '23

Hi. I am using openstack, ceph and libvirt now. The live volume migration will call the libvirt rebase function in openstack nova project. https://github.com/openstack/nova/blob/stable/rocky/nova/virt/libvirt/drive… https://github.com/openstack/nova/blob/stable/rocky/nova/virt/libvirt/guest… But I use the ceph as the openstack block backend. And the type of disk is network in xml. <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback' discard='unmap'/> <auth username='cinder'> <secret type='ceph' uuid='86d3922a-b471-4dc1-bb89-b46ab7024e81'/> </auth> <source protocol='rbd' name='volumes002/volume-127f46fc-ef10-4462-af30-c3893cda31f9'> <host name='172.16.140.63' port='6789'/> </source> <target dev='vdb' bus='virtio'/> <serial>127f46fc-ef10-4462-af30-c3893cda31f9</serial> <alias name='virtio-disk1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> Now I found it is not supported to rebase network disk. It is only rebase block or file disk now. https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainBlockRebase My question is that can I rebase network disk by some other ways from libvirt? Cheers, Boxiang

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[libvirt-users] Does libvirt (will) support qemu's userspace vhost scsi and blk
by wuzhouhui 26 Oct '23

26 Oct '23

Does libvirt (will) support qemu's userspace vhost scsi and blk?

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[libvirt-users] how xml generated
by 李卓瑶 26 Oct '23

26 Oct '23

hi : i create a domain by virt-manager tool, then there is a xxx.xml generated in /etc/libvirt/qemu/. so, my question is how the xx.xml generated? What the code involves in libvirt ? Thanks! -- Have a good day

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[libvirt-users] How to convert "device_model_version = "qemu-xen-traditiona"" into libvirt xml file How to convert "device_model_version = "qemu-xen-traditiona"" into libvirt xml file
by hanyandong 26 Oct '23

26 Oct '23

I am using Xen-4.4.0, libvirt-1.2.9 My ubuntu.cfg is: ubuntu10.cfg bootloader = "/usr/local/lib/xen/boot/hvmloader" builder="hvm" memory = 512 name = "ubuntu" vif = [ "type=ioemu,bridge=ovsbr0", "type=ioemu,bridge=ovsbr0","type=ioemu,bridge=ovsbr0","type=ioemu,bridge=ovsbr0",,"type=ioemu,bridge=ovsbr0"] device_model_version = "qemu-xen-traditional" If I didnot add " device_model_version = "qemu-xen-traditional" " to ubuntu.cfg, I only can add four NICs to VM. If I add five or more,, I got these errors: libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 12 device model: spawn failed (rc=-3) libxl: error: libxl_create.c:1186:domcreate_devmodel_started: device model did not start: -3 libxl: error: libxl_dm.c:1475:kill_device_model: Device Model already exited If I add " device_model_version = "qemu-xen-traditional" " to ubuntu.cfg, I can apply 8 NICs to VM. But, I want to create domU by virsh(libvirt), so How convert " device_model_version = "qemu-xen-traditional"" to xml file used by virsh? and How many NIC can a VM have? what leads to this limit？ -- Best Regards, yandong

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ANNOUNCE: Forthcoming changes to libvirt mailing list hosting
by Daniel P. Berrangé 13 Oct '23

13 Oct '23

Hello Libvirt Community, For the last 18(!) years, libvirt community mailing lists have been kindly hosted by Red Hat Corporate IT on the redhat.com Mailman installation. In retrospect this wasn't the ideal home for community mailing lists but that decision is ancient history. Unfortunately as a consequence of infrastructure changes, the redhat.com Mailman service is scheduled to be decomissioned, and in the very near future ($low weeks) will cease to be able to send/receive mail for libvirt lists. As a result, all the libvirt mailing lists will need to move to a new Mailman installation, managed on our behalf by the Red Hat Open Source Community Infrastructure team[1], who provide services for a variety of OSS projects. It is intended that this new service will be dedicated for our community and thus located somewhere under the libvirt.org domain. It should go without saying that all existing mail archives will be migrated over to the new server. None of the historical record should be lost. It is not considered appropriate netiquette, however, to bulk-resubscribe all current list members under a new domain. Thus anyone who wants to remain on the community lists will soon be requested to take action to enroll on the new mailman service. The new service is not quite ready for use yet. This mail serves as a heads up that the changes will be coming in the next couple of weeks that will require action. A further announcement will be sent when the new mailman is ready to accept subscriptions, as well as warnings before the old lists stop accepting messages. With regards, Daniel [1] https://www.osci.io/ -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|

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Problem starting Windows 11 EE
by Rahul S 12 Oct '23

12 Oct '23

Hi, I configured a W11EE VM using virt-manager and joined it to my work domain. Everything was fine for a while. Later when I tried to reboot, I got the "Preparing Automatic Repair" message and when I selected "Startup Repair", I got the error "Startup repair couldn't repair your PC". I then went to command prompt, started 'diskpart' and ran "list disk" and got the error "there are no fixed disks to show". I have tried re-installing several times - it always ends up in this state. A few details of my system: host OS: OpenSUSE 15.5 libvirt version: 9.0.0-150500.4.3 virtio drivers: https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-vi… Disk device type: virtio bitlocker is enabled in VM I am able to configure and use W11-professional without joining my work domain. The above problem isn't seen there. I booted the broken VM using my linux rescue disk image and examined the partition table. Everything seems to be proper. But windows isn't able to find the disk as I explained above. Can anybody provide any pointers for troubleshooting this ? Thanks, -Rahul

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any advantage to using pool type glusterfs if no GFAPI
by W Kern 09 Oct '23

09 Oct '23

I have used fuse mounted gluster with 'dir' for years. Works great, aside from having to use the --unsafe flag on migrations. I am building up a new system and wondering if using the glusterfs type would be a better/safer choice. I'm not concerned about gfapi (host is U22LTS so I'm not even sure if it has it). I'm not concerned about the automount feature as that happens on start up anyway. I'm more interested if there is any technical or performance reasons to prefer 'glusterfs' pool type over 'dir' of course not having the --unsafe flag would be nice, but thats all scripted in anyway. -wk

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Issue accidentally creating a '--type' defined pool
by Joshua Blake 04 Oct '23

04 Oct '23

Hello, I seem to have accidentally created a pool called "--type", but it doesn't appear in 'virsh pool-list'. See below. [root@vh01 /]# virsh pool-define-as --name --type dir --target /data/storage/ Pool --type defined [root@vh01 /]# virsh pool-list Name State Autostart ------------------------------ isos active yes jblake active yes [root@vh01 /]# virsh pool-destroy '--type' error: command 'pool-destroy' doesn't support option --type I can't also create a new "default" type because the directory exists for this defined '--type' [root@vh01 /]# virsh pool-define-as --name default --type dir --target /data/storage/ error: Failed to define pool default error: operation failed: Storage source conflict with pool: '--type' [root@vh01 /]# virsh pool-delete "--type" error: command 'pool-delete' doesn't support option --type Any help would be greatly appreciated.

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Question about encryption and tls
by Kamil Jońca 29 Sep '23

29 Sep '23

(Posted few days ago on qemu group but no reactions) Do I understand correctly that ssl shoudl be configured independently for libvirt and each hypervisor? I asked because I configured libvirt connection as qemu+tls://bambus.kjonca/system?pkipath=... (and on bambus in /etc/libvirt/libvirtd.conf) I set key_file = ... cert_file = ... ca_file = ... But after connect and lauching (on bambus) vm I tried to snif traffic to bambus:5900 on client) and wireshark was able to detect "VNC" protocol (BTW not spice?), so I am confused. should I configure in /etc/libvirt/qemu.conf spice_tls option and certificates ? KJ

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Re: Help ! libvirt
by Bhasker C V 22 Sep '23

22 Sep '23

Adding libvirt mailing list apologies for cross-posting libvirt version: 9.7.0-1 On Thu, Sep 21, 2023 at 8:39 AM john doe <johndoe65534(a)mail.com> wrote: > On 9/21/23 09:32, Bhasker C V wrote: > > I am getting an error with libivrt when I create a VM > > > > ``` > > $ sudo virsh create ./win11.xml > > error: Failed to create domain from ./win11.xml > > error: internal error: mishandled storage format 'none' > > > > ``` > > > > This is after I have done a dist-upgrade (was working fine before) > > debian trixie. > > > > error message says > > qemuBlockStorageSourceGetBlockdevFormatProps:1227 : internal error: > > mishandled storage format 'none' > > > > You might want to post this as well to the Libvirt mailing list. > > -- > John Doe > >

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virtio-mem with virt-install to share memory between guest and host on-demand
by Daniel Krajnik 20 Sep '23

20 Sep '23

Hi I'm trying to Passthrough a GPU to a VM and have it still share its free memory with the host (just like it would with virtio-balloon). Is this something virtio-mem is capable of? I've tried to run it, but it immediately took over 9GB of memory: virt-install --name test --cpu cell0.cpus=0,cell0.memory=4194304,cell1.cpus=1,cell1.memory=4194304 --memory maxMemory=65536,maxMemory.slots=8 --memdev model=virtio-mem,target.node=0,target.block=2048,target.size=1000 --disk size=400 --network network=ai --location=/tmp/debian-12.1.0-amd64-netinst.iso --os-variant=debian11 --graphics none --extra-args "console=ttyS0 Best wishes, Daniel

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CAN virtualization
by Sánta, Márton (ext) 18 Sep '23

18 Sep '23

Dear Users, I use KVM with libvirt 9.0.0. The host and guest OS-es are also AGL needlefish images. I am currently trying to virtualize a CAN driver and provide virtual machines access to the physical CAN channels. I started with the virtual network handling as CAN interface is a network interface, I tried to find analogies, solutions like "traditional" network handling but it did not work. I also tried out to define a nodedev device via .xml config file. The interesting thing is, that when I list all the available nodedev devices with 'virsh nodedev-list', I can see 'net_can0' and 'net_can1' on the output as 'net' type device but I cannot attach these devices to the guests, and I do not know how to define it in the guest .xml file. I tried out many different things, but when I try to add it as a 'hostdev' device with different mode and type settings, I always get an error (e.g. not a PCI device or not supported device type etc.). It would be long to write down all the configurations I tried out, so my first question would be that does anybody know how could I provide access to guests to the physical CAN interfaces? The aim is to be able to send CAN messages from guest OS-es. If no direct access is possible, it would be also OK to have access to virtual CAN interfaces on the host and then transfer messages to the physical CAN channel. Thank you in advance for an early reply! Best regard, Márton Sánta This transmission is intended solely for the addressee and contains confidential information. If you are not the intended recipient, please immediately inform the sender and delete the message and any attachments from your system. Furthermore, please do not copy the message or disclose the contents to anyone unless agreed otherwise. To the extent permitted by law we shall in no way be liable for any damages, whatever their nature, arising out of transmission failures, viruses, external influence, delays and the like.

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how to build libvirt-go-module statically
by Jiatong Shen 06 Sep '23

06 Sep '23

Hello community, I want to know how to build libvirt-go-module statically? My go version is 1.17 and libvirt-go-module version is v1.9007.0. Thank you very much for the help. -- Best Regards, Jiatong Shen

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SEV, SEV-ES, SEV-SNP
by Derek Lee 29 Aug '23

29 Aug '23

When SEV is enabled in domcapabilities does that just mean any of SEV, SEV-ES, SEV-SNP is possible on the hardware? Similarly, does enabling SEV as a launchSecurity option in a domainXML mean that whichever SEV is available will be enabled? And if the guest policy has the ES flag set, it will not be created unless ES is enabled? Sorry if these questions don't make sense or are ill-formed. Best, Derek

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Performance Discrepancies and Limitations in Local Storage IOPS Testing
by Jan Wasilewski 24 Aug '23

24 Aug '23

Hi, In the past few weeks, I conducted performance tests to evaluate IOPS (Input/Output Operations Per Second) performance for locally attached disks. The original discussion started on the openstack-discuss mailing list since all the tests were conducted within an OpenStack cloud environment. However, I decided to initiate a discussion here, as it appears that the performance differences might be rooted in lower-level factors rather than the OpenStack platform itself. It seems that these differences are closely related to variations in libvirt/qemu versions and kernel configurations. Ultimately, I discovered that the performance is significantly enhanced when the hypervisor is deployed on top of Ubuntu 22.04LTS. Under this setup, I was able to achieve around 100,000 IOPS during my fio tests [1][2]. In contrast, conducting a similar test with the hypervisor deployed on Ubuntu 20.04LTS yielded significantly lower results, averaging around 20,000 IOPS [3][4]. An intriguing observation is that attaching an nvme disk to my Ubuntu 22.04LTS system and utilizing it as local storage led to slightly diminished performance, hovering around 90,000 IOPS [5]. This outcome is somewhat unexpected, as I initially anticipated higher figures. It's particularly noteworthy that when I conduct the same test directly on top of the hypervisor, the numbers align more closely with expectations [6][7]. This pattern suggests that there might be a limitation imposed either by libvirt/qemu or the kernel itself. Having meticulously reviewed all the release notes, I failed to come across any information pertaining to noteworthy performance enhancements concerning local storage and IOPS. Given this, I'd like to reach out to you directly to inquire if you possess any insights into such limitations. Any guidance or suggestions that could help optimize my local storage results would be greatly appreciated. Looking forward to your input. Best regards /Jan Wasilewski *References:[1] Configuration details(libvirt/qemu/kernel version) for Ubuntu 22.04: https://paste.openstack.org/show/b8svl0bOfX0WHTGvgI1h/ <https://paste.openstack.org/show/b8svl0bOfX0WHTGvgI1h/>[2] fio results for VM test with Ubuntu 22.04: https://paste.openstack.org/show/bUpiq1y0o58S1ThNgqLd/ <https://paste.openstack.org/show/bUpiq1y0o58S1ThNgqLd/>[3] Configuration details(libvirt/qemu/kernel version) for Ubuntu 20.04: https://paste.openstack.org/show/b005K2L6ZutGxDrCOZbL/ <https://paste.openstack.org/show/b005K2L6ZutGxDrCOZbL/>[4] fio results for VM test with Ubuntu 20.04: https://paste.openstack.org/show/b8JeVOn4YCPSX7uaqR0N/ <https://paste.openstack.org/show/b8JeVOn4YCPSX7uaqR0N/>[5] fio results for VM test with Ubuntu 22.04 and nvme as a local storage disk: https://paste.openstack.org/show/b75M4bI00LQePTmYSaUI/ <https://paste.openstack.org/show/b75M4bI00LQePTmYSaUI/>[6] fio results for hypervisor test with Ubuntu 22.04 and nvme storage: https://paste.openstack.org/show/bj7NeSiwwiWS6MbJROts/ <https://paste.openstack.org/show/bj7NeSiwwiWS6MbJROts/>[7] fio results for hypervisor test with Ubuntu 22.04 and ssd storage: https://paste.openstack.org/show/bSeEHXcbrY9YlYWQWGKS/ <https://paste.openstack.org/show/bSeEHXcbrY9YlYWQWGKS/>*

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Warning : Failed to set up UEFI / The Libvirt version does not support UEFI / Install options are limited...
by Mario Marietto 21 Aug '23

21 Aug '23

Hello to everyone. I'm trying to use qemu 5.1 with virt-manager and libvirt on my ARM chromebook (armhf 32 bit cpu) running with Devuan 4 as host o.s. By default it uses qemu and its dependencies,version 5.2. I remember that I can't use qemu 5.2,because it doesn't have any support for KVM as you can read here : https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg02074.html For this reason,I've compiled qemu 5.1 from source. Below I shown how I have configured everything such as a little piece of compilation messages : # apt install libgtk-3-dev libpulse-dev libgbm-dev libspice-protocol-dev libspice-server-dev libusb-1.0-0-dev libepoxy-dev # cd /usr/share # mv qemu qemu_ # cd /usr/lib # mv qemu qemu_ # cd /usr/lib/arm-linux-gnueabihf # mv qemu qemu_ # cd /usr/lib/ipxe # mv qemu qemu_ # cd /usr/share/bash-completion/completions/ # mv qemu qemu_ # mv qemu-kvm qemu-kvm_ # mv qemu-system-i386 qemu-system-i386_ # mv qemu-system-x86_64 qemu-system-x86_64_ # cd /usr/bin # mv qemu-system-arm qemu-system-arm_ # cp /root/Desktop/qemu-v5.1.0/arm-softmmu/qemu-system-arm /usr/bin # CFLAGS=-Wno-error ./configure --target-list=x86_64-softmmu --enable-opengl --enable-gtk --enable-kvm --enable-guest-agent --enable-spice --audio-drv- list="oss pa" --enable-libusb A little piece of the log messages that I've got from the compilation of qemu 5.1 : https://pastebin.ubuntu.com/p/8DYfgPvhXy/ These are the resulting versions of my frankenstein operation : # virsh version Compiled against library: libvirt 7.0.0 Using library: libvirt 7.0.0 Using API: QEMU 7.0.0 Running hypervisor: QEMU 5.1.0 At this point I've run virt-manager. It has been able to detect qemu,but I get the following error : Warning : Failed to set up UEFI. The Libvirt version does not support UEFI. Install options are limited. Do you have some suggestions to give me to fix this error ? I'm sure to have missed something, thanks. -- Mario.

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Does libvirt support intra-host KVM migration?
by Eric Wheeler 17 Aug '23

17 Aug '23

Hello all, I'm reposting this to the libvirt-users list: I looked around for documentation on intra-host KVM migration but haven't found much. For example, this could be useful to "migrate" VM to run on an upgraded version of `qemu-kvm` without migrating to a different host and migrating back. We tested migrating a VM to the same host on an old version of libvirt (el7), and it complained about UUID conflicts if the destination already hosts the same VM. Changing the name or the UUID in the destination XML during migration (`virsh migrate --xml`) gives an error that the UUID or name does not match during migration: UUID change: error: unsupported configuration: Target domain uuid 66a113f4-a101-4db1-8478-49cf088fedb9 does not matchsource b5256b25-e137-45b8-bddb-78545ab55fc4 Name change: error: unsupported configuration: Target domain name 'diskless2' does not match source 'diskless' Questions before we do more testing: - Do modern versions of libvirt support intra-host migration? - If so, which version? - Documentation? Any help you can provide would be greatly appreciated! -- Eric Wheeler

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You will need to grant the 'libvirt-qemu' user search permissions for the following directories....
by Sebastien WILLEMIJNS 08 Aug '23

08 Aug '23

Hello, Why LIBVIRT software/libs need to chown "near the root level" (home/blahblah/) when raw/vdi/vhd can contains lots of directories as /home/user/Virtual_HDs/desktop/daddy/private/bedroom/number2/hd.vdi ? on ubuntu, "/media/hostname" can contains all our external HD's without relation with virtualization !!! :-( another sample picked up in the net: WARNING /home/jwright/virtualMachines/images/fedora25.qcow2 may not be accessible by the hypervisor. You will need to grant the 'qemu' user search permissions for the following directories: ['/home/jwright']

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ipv6 can not work for direct type interface
by Yalan Zhang 07 Aug '23

07 Aug '23

Hi there, I have a question regarding direct type interfaces. Would someone be able to take a look at it? When I start 2 VMs on the same host with interface "direct type + bridge mode", just as below: <interface type="direct"> <mac address="52:54:00:9e:7b:51"/> <source dev="eno1" mode="bridge"/> <model type="virtio"/> </interface> The 2 VMs can connect to each other via ipv4, but can not connect to each other via ipv6. Maybe it's related to some kernel parameters, but I don't know how to debug. Is there anyone who can help me? Thank you! BR, Yalan

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Security Logs
by Simon Fairweather 22 Jul '23

22 Jul '23

Hi Is there a way to enable logging of security revents, i.e. a remote client connecting to VNC/SPICE for console. I cannot see/find any documentation, I have also requested a feature request on QEMU gitlab. Regards Simon.

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Issue with libvirtd service and virsh on Debian 13 "trixie" (testing)
by pascal 14 Jul '23

14 Jul '23

Hi, I just upgraded to Debian 13 and observing an issue related to libvirtd service. It happens during up time, the service is initially running and all is working fine. I can run virt-manager and use VMs. Then close virt-manager. After some time (5min), here is what happens : - virt-manager keeps on "Connecting... " when launching it. - "sudo virsh net-list --all" command hangs and does not respond. I have to type Ctrl-C. At that step, I need to restart the libvirtd service : "sudo systemctl restart libvirtd" Then everything is back and running as expected... For 5 minutes as issue comes back. All logs here : https://pastebin.com/qHQWLF4i -=- Versions used : sudo apt policy qemu-system Installé : 1:8.0.2+dfsg-3 sudo apt policy libvirt-daemon-system Installé : 9.5.0-1 $ sudo apt policy virt-manager Installé : 1:4.1.0-2 Can you help here ? Thanks and regards, Pascal

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