October 2019 - Users - libvirt List Archives

[libvirt-users] Using encrypted volumes
by Dominik Reusser 02 Oct '19

02 Oct '19

I was encouraged [1] to use the storage encryption mechanism of libvirt [2]. However, it is not clear to me how to generate a corresponding encrypted volume. Preferably, I would like to use virt-install to arrive at such an encrypted volume, similar to e.g. virt-install --connect qemu:///system -n testImage -r 2048 --os-type=linux --disk testImage.img,device=disk,bus=virtio,size=8,sparse=true,format=raw --os-variant debian10 --vnc --location ftp://ftp2.de.debian.org/debian/dists/buster/main/installer-amd64/ I already asked a related question on server fault [3], but this is a better targeted audience. Sorry for double-posting. [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=933385 [2] https://libvirt.org/formatstorageencryption.html#StorageEncryption [3] https://serverfault.com/questions/986488/how-to-enable-volumeencryption-dur…

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Re: [libvirt-users] Internal error reported by libvirt while creating a VM
by Andrea Bolognani 02 Oct '19

02 Oct '19

On Tue, 2019-10-01 at 17:55 -0400, Ajay Kumar wrote: > Hi Andrea, > > Thank you for your response. Sure I don't CC to libvirt developers. Please keep the list in the loop, though! I've re-added it. > I am getting an error while creating a Win10 virtual machine using VMM or virt-manager GUI. > I could configure the windows 10 quest using its XML file only ofter creating a VM using virt-manager GUI in the following the path /etc/libvirt/qemu. > > The modified QEMU emulator is running correctly > @ubuntu-kvm3:/usr/local/bin$ ls > ivshmem-client qemu-ga qemu-io qemu-pr-helper virsh virt-host-validate virt-pki-validate vmi-dump-memory vmi-process-list vmi-win-offsets > ivshmem-server qemu-img qemu-nbd qemu-system-x86_64 virt-admin virt-login-shell virt-xml-validate vmi-module-list vmi-win-guid This only proves that you've installed it, not that it works. And as I said, the modified binary probably works fine on its own but libvirt might not be able to drive it, at least without tweaks. > @ubuntu-kvm3:/etc/libvirt/qemu$ ls > networks Just for the record, you're not supposed to modify files in /etc/libvirt/qemu directly; use virsh instead. > I couldn't see guest XML file here(because the VM creation was not done). > attached snap displaying error while creating a VM. If you run $ virt-manager --debug from the command line you will get a lot of output, including the XML that's passed to libvirt. Please attempt the installation again, capture that output in a plain text file and send it to the list as an attachment. Also run $ /usr/local/bin/qemu-system-x86_64 -machine help and attach the output of that command, too. That should help us figure out what's wrong. -- Andrea Bolognani / Red Hat / Virtualization

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[libvirt-users] Internal error reported by libvirt while creating a VM
by Ajay Kumar 01 Oct '19

01 Oct '19

Hi, am Ajay Kumar. I am trying to create a virtual machine on the remote host (where libvirt 5.8.0) was installed using a virtual machine manager which are running on the local ubuntu machine. *The specification of my remote host are:* *Hypervisor: *KVM *QEMU version:* QEMU emulator version 2.4.0.1, Copyright (c) 2003-2008 Fabrice Bellard The below error is propagating when I am trying to install KVM-VMI ( https://github.com/KVM-VMI/kvm-vmi/tree/kvmi) with modified QEMU, and there is a modified QEMU involved, in /usr/local/bin/qemu-system-x86_64. The below particular error propagating when I am trying to create a virtual machine using VMM gui (virt-manager). Unable to complete install: 'internal error: process exited while connecting to monitor: (process:7400): GLib-WARNING **: 18:19:45.044: ../../../../glib/gmem.c:489: custom memory allocation vtable not supported 2019-09-30T18:19:45.046714Z qemu-system-x86_64: -msg timestamp=on: Unsupported machine type Use -machine help to list supported machines!' Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/create.py", line 2553, in _do_async_install guest.start_install(meter=meter) File "/usr/share/virt-manager/virtinst/guest.py", line 498, in start_install doboot, transient) File "/usr/share/virt-manager/virtinst/guest.py", line 434, in _create_guest domain = self.conn.createXML(install_xml or final_xml, 0) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3603, in createXML if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self) libvirtError: internal error: process exited while connecting to monitor: (process:7400): GLib-WARNING **: 18:19:45.044: ../../../../glib/gmem.c:489: custom memory allocation vtable not supported 2019-09-30T18:19:45.046714Z qemu-system-x86_64: -msg timestamp=on: Unsupported machine type Use -machine help to list supported machines! -- *With Best Regards:* Ajay

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