- Devel - oVirt List Archives

Console Disconnect Action
by Shubha Kulkarni 12 May '23

12 May '23

Hello, I am experimenting with the feature ‘console disconnect action’ . It provides four actions on disconnect.  Lock screen - This is the default option. For all Linux machines and for Windows desktops this locks the currently active user session. For Windows servers, this locks the desktop and the currently active user.  Logout user - For all Linux machines and Windows desktops, this logs out the currently active user session. For Windows servers, the desktop and the currently active user are logged out.  Shutdown virtual machine - Initiates a graceful virtual machine shutdown.  Reboot virtual machine - Initiates a graceful virtual machine reboot. In my testing, the shutdown and reboot options worked. However, lock screen and logout user option did not work for me. I looked around and found out that qemu-guest agent has no command to log off a user. I see ovirt-guest-agent has some code to logout user as described below - https://github.com/oVirt/ovirt-guest-agent/blob/master/ovirt-guest-agent/Lo… However, it turns out that the ovirt-guest-agent is not supported anymore. So I am wondering how the ‘lock screen’ and ‘logout user’ is implemented and whether it is still supported/supposed to work? Thanks, Shubha

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this is probably a bug: cannot import name 'Callable' from 'collection
by lejeczek 12 May '23

12 May '23

Hi guys Just to let you know that both stable & testing fail to setup hosted engine very early in the process, in Centos 9 [ ERROR ] b'[WARNING]: Skipping plugin (/usr/share/ovirt-hosted-engine-\n' [ ERROR ] b'setup/he_ansible/callback_plugins/2_ovirt_logger.py), cannot load: cannot\n' [ ERROR ] b"import name 'Callable' from 'collections'\n" [ ERROR ] b'(/usr/lib64/python3.11/collections/__init__.py)\n' [ ERROR ] b"ERROR! Unexpected Exception, this is probably a bug: cannot import name 'Callable' from 'collections' (/usr/lib64/python3.11/collections/__init__.py)\n" [ ERROR ] Failed to execute stage 'Environment customization': Failed executing ansible-playbook [ INFO ] Stage: Clean up [ INFO ] Cleaning temporary resources [ ERROR ] b'[WARNING]: Skipping plugin (/usr/share/ovirt-hosted-engine-\n' [ ERROR ] b'setup/he_ansible/callback_plugins/2_ovirt_logger.py), cannot load: cannot\n' [ ERROR ] b"import name 'Callable' from 'collections'\n" [ ERROR ] b'(/usr/lib64/python3.11/collections/__init__.py)\n' [ ERROR ] b"ERROR! Unexpected Exception, this is probably a bug: cannot import name 'Callable' from 'collections' (/usr/lib64/python3.11/collections/__init__.py)\n" [ ERROR ] Failed to execute stage 'Clean up': Failed executing ansible-playbook [ INFO ] Generating answer file '/var/lib/ovirt-hosted-engine-setup/answers/answers-20230511181231.conf' [ INFO ] Stage: Pre-termination [ INFO ] Stage: Termination [ ERROR ] Hosted Engine deployment failed I ain't ! a python programmer, but what the Internet says, seems to be the case: from collections import Callable VS from collections.abc import Callable and if it's that trivial indeed, perhaps a quick official fix then? many thanks, L.

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IO threads versus number of diske mapped to VM
by Jacob M. Nielsen 03 May '23

03 May '23

Hi List I have trouble to find information regarding how to performance tune my IO on my VM. We see bad performance max 30 MB/s from the VM to the storage (Posix mounted file system) We have tested the filesystems locally from the Ovirt host , and we can easy get +500MB/s Found a parameter <io> <threads>2</threads> </io> I can't find recommended configuration regarding this parameter. My question is which value is should use for this , when having 60 high performance disks mapped to my VM Somebody any answers tnx

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Ovirt 4.5.0 Support (End of Life Date)
by masood.ahmed＠digital.mod.uk 21 Apr '23

21 Apr '23

Hi, I am working on a project and we would like to utilise (oVirt 4.5.) as the platform for our enterprise infrastructure. We have arrived at this juncture because of a range of considerations related to hardware and software availability and compatibility. My question is if there is on-going vendor \ professional support for oVirt moving forward, as one of my colleagues spoke with Red Hat, who stated they are going to end their support for the product. we will not gain security accreditation for our project unless we have professional support available, community support only is not sufficient, Any ideas of firms available for a support contract for oVirt 4.5.0? thanks

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Ovirt 4.5.0 Support (End of Life Date)
by masood.ahmed＠digital.mod.uk 21 Apr '23

21 Apr '23

Hi, I am working on a project and we would like to utilise (oVirt 4.5.) as the platform for our enterprise infrastructure. We have arrived at this juncture because of a range of considerations related to hardware and software availability and compatibility. My question is if there is on-going vendor \ professional support for oVirt moving forward, as one of my colleagues spoke with Red Hat, who stated they are going to end their support for the product. we will not gain security accreditation for our project unless we have professional support available, community support only is not sufficient, Any ideas of firms available for a support contract for oVirt 4.5.0? thanks

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for what is this used for?
by kleinbosse＠gmail.com 14 Apr '23

14 Apr '23

apparently it seems to break the upgrade of my engine to a newer version. any way to avoid this or where to fix it ? it appears, when the local external engine is deployed and tries to install the "new" host. Ty 2023-04-05 17:05:43,900+0200 ERROR (jsonrpc/4) [virt.vm] (vmId='299663c2-fca2-4394-b334-b639612eb4b8') Operation failed (vm:5605) Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/virt/vm.py", line 5570, in setCpuTuneQuota self._dom.setSchedulerParameters({'vcpu_quota': int(quota)}) File "/usr/lib/python3.9/site-packages/vdsm/virt/virdomain.py", line 104, in f ret = attr(*args, **kwargs) File "/usr/lib/python3.9/site-packages/vdsm/common/libvirtconnection.py", line 114, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python3.9/site-packages/vdsm/common/function.py", line 78, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python3.9/site-packages/libvirt.py", line 2852, in setSchedulerParameters raise libvirtError('virDomainSetSchedulerParameters() failed') libvirt.libvirtError: Invalid value '-1' for 'cpu.max': Invalid argument

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Support for ARM 64
by shubha.kulkarni＠oracle.com 13 Apr '23

13 Apr '23

Hello, I am trying to understand support for ARM architecture in OVirt. I came across this oVirt doc https://www.ovirt.org/documentation/installing_ovirt_as_a_standalone_manage…. It mentions ‘The oVirt project also provides packages for the 64-bit ARM architecture (ARM 64) but only as a Technology Preview.’ So I am wondering where I can find the packages and document/steps to install oVirt on aarh64 architecture. Also, I looked at upstream oVirt engine source code and saw no reference to ARM CPU types. So I am wondering if the engine running on x86 system supports adding ARM 64 host. Thanks, Shubha

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for what is this used for?
by kleinbosse＠gmail.com 05 Apr '23

05 Apr '23

apparently it seems to break the upgrade of my engine to a newer version. any way to avoid this or where to fix it ? it appears, when the local external engine is deployed and tries to install the "new" host. Ty 2023-04-05 17:05:43,900+0200 ERROR (jsonrpc/4) [virt.vm] (vmId='299663c2-fca2-4394-b334-b639612eb4b8') Operation failed (vm:5605) Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/virt/vm.py", line 5570, in setCpuTuneQuota self._dom.setSchedulerParameters({'vcpu_quota': int(quota)}) File "/usr/lib/python3.9/site-packages/vdsm/virt/virdomain.py", line 104, in f ret = attr(*args, **kwargs) File "/usr/lib/python3.9/site-packages/vdsm/common/libvirtconnection.py", line 114, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python3.9/site-packages/vdsm/common/function.py", line 78, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python3.9/site-packages/libvirt.py", line 2852, in setSchedulerParameters raise libvirtError('virDomainSetSchedulerParameters() failed') libvirt.libvirtError: Invalid value '-1' for 'cpu.max': Invalid argument

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Support for ARM 64
by Shubha Kulkarni 05 Apr '23

05 Apr '23

Hello, I am trying to understand support for ARM architecture in OVirt. I came across this oVirt doc https://www.ovirt.org/documentation/installing_ovirt_as_a_standalone_manage…. It mentions 'The oVirt project also provides packages for the 64-bit ARM architecture (ARM 64) but only as a Technology Preview.' So I am wondering where can find the packages and document/steps to install oVirt on aarh64 architecture. Also I looked at upstream oVirt engine source code and did not see any reference to ARM CPU types. So I am wondering if engine running on x86 system supports adding ARM 64 host. Thanks, Shubha

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future without CentOS
by rp.neuli＠yahoo.com 10 Feb '23

10 Feb '23

Hello Masters, I am very keen to use oVirt, but I was shocked and shaken to go ahead with oVirt after I heard about end of road for CentOS. Therefore I looked for some answers which I could not find online: 1. Will/Are you actively and vigorously porting: a) oVirt Agent to other OS like ubuntu? b) vdsm package to other OS like ubuntu, deb, openBSD etc. 2. While standalone oVirt Node can continue to have CentOS codebase under the hood. But do you still want to migrate it to other OS? like openBSD? Kindly advice. In my view, oVirt in itself is a good and complete platform. It just need to continue evolve as VM and container "OS"/hypervisor. At the same time 'agent' and vdsm should be ported to as many OS as possible. Thank you. Rajeev

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