- Users - oVirt List Archives

VM Snapshot tab error Code 500
by doboscsongor＠gmail.com 01 Jun '24

01 Jun '24

Hi everybody, I'm new to the oVirt environment, so I started with a fresh install on two physical servers using a hosted engine scenario. Currently, I have version 4.5.6-1.el8 installed. For storage, I am using FC to access our storage. I have created a test VM for testing purposes where I installed MS Windows Server 2022. On the VM, I installed the guest tools, and everything is working fine except for the snapshots tab. If I don't have any snapshots for the VM, I can view the snapshots tab, but if I create a snapshot, the snapshots tab shows an error: "Error while executing action: A request to the server failed with the following status code: 500." Does anyone have any idea why I am getting this error? Thanks in advance!

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Re: [External] : Re: Unable Access VM console VNC
by Ricardo OT 31 May '24

31 May '24

I have had this problem and I solved it today. In my Rocky linux 8 environment I reinstalled one of the servers and it stopped working. I tried doing what our friend indicated by disabling encryption, putting the host into maintenance and reinstalling... but nothing. What solved my problem was adding the firewall rules that were missing on one of my hosts.

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oVirt on EL8 derivatives now that CentOS Stream 8 is EOL
by Rik Theys 31 May '24

31 May '24

Hi, To install oVirt on EL8 derivatives, https://www.ovirt.org/download/install_on_rhel.html has instructions on how to disable the extras repo, and configures two repositories from CentOS 8 Stream. Now that CentOS 8 Stream is EOL, what is the procedure to install/update oVirt on EL8 machines? Have the required packages from CentOS Stream 8 been merged in EL8.10? Unfortunately, migrating to CentOS Stream 9 is not an option in our environment as we need SPICE support, which has been dropped in EL9. Regards, Rik -- Rik Theys System Engineer KU Leuven - Dept. Elektrotechniek (ESAT) Kasteelpark Arenberg 10 bus 2440 - B-3001 Leuven-Heverlee +32(0)16/32.11.07 ---------------------------------------------------------------- <<Any errors in spelling, tact or fact are transmission errors>>

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Hosted Engine Deployment failure v4.5.5
by joaonicolau＠ipvc.pt 30 May '24

30 May '24

Hi, I my trying to deploy hosted engine and keeps on failing with following errors. i'm new to oVirt and unabe to figure out what the issues is? any help would be very much appreciated. [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Install ovirt-engine-appliance rpm] [ ERROR ] fatal: [localhost]: FAILED! => {"attempts": 10, "changed": false, "msg": "Failed to validate GPG signature for ovirt-engine- appliance-4.5-20231201120252.1.el8.x86_64: Public key for ovirt-engine-appliance-4.5-20231201120252.1.el8.x86_64.rpm is not installed"} [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : include_tasks] [ INFO ] ok: [localhost] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Remove local vm dir] [ INFO ] changed: [localhost] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Remove temporary entry in /etc/hosts for the local VM] [ INFO ] ok: [localhost] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : include_tasks] [ INFO ] ok: [localhost] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Destroy local storage-pool localvmqjpz3cd_] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Undefine local storage-pool localvmqjpz3cd_] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Destroy local storage-pool {{ local_vm_disk_path.split('/')[5] }}] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Undefine local storage-pool {{ local_vm_disk_path.split('/')[5] }}] [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Notify the user about a failure] [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "The system may not be provisioned according to the playbook results: please check the logs for the issue, fix accordingly or re-deploy from scratch.\n"}

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Storage Solution for Ovirt4.5
by Ankit Sharma 30 May '24

30 May '24

Hi Guys, I am using Ovirt4.3 with 5 hosts and SAN for 10 years and now looking for upgrade to it on latest version. Now i want to use server as storage instead of SAN due to economic reasons. So, i have used tgt/target-cli and created LUNs for storage and access through iscsi and everything seems well. Would it be a good solution? Also what could be possible limitation and disadvantage over to SAN box? Thanks. AS

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Re: Ovirt standalone engine ssl cert is about to expire
by Martin Perina 28 May '24

28 May '24

Hi, As mentioned in engine-setup output could you please take a look at /var/log/ovirt-engine/setup/ovirt-engine-setup-20240524211731-rzwc65.log to see the error details? Regards, Martin On Tue, May 28, 2024 at 5:46 AM Bogdan Dumitrescu <bogdan(a)arrcus.com> wrote: > Hello Martin, > > > > I did the engine-setup –offline since it is a standalone engine but I’m > getting the stale zombie taks. > > > > [ INFO ] Stage: Setup validation > > During execution engine service will be stopped (OK, Cancel) > [OK]: ok > > [ INFO ] Cleaning stale zombie tasks and commands > > [ ERROR ] Failed to execute stage 'Setup validation': Failed to clear > zombie commands. Please access support in attempt to resolve the problem > > [ INFO ] Stage: Clean upt > > Log file is located at > /var/log/ovirt-engine/setup/ovirt-engine-setup-20240524211731-rzwc65.log > > [ INFO ] Generating answer file > '/var/lib/ovirt-engine/setup/answers/20240524211757-setup.conf' > > [ INFO ] Stage: Pre-termination > > [ INFO ] Stage: Termination > > [ ERROR ] Execution of setup failed > > > > Not sure how to get rid of the zombie tasks. > > > > Any help would be greatly appreciated. > > > > > > *Bogdan Dumitrescu* > > *IT Infrastructure* > > > > *Arrcus* | 2077 Gateway Place, Suite 400 | San Jose, CA 95110 > > www.arrcus.com > > > > [image: Arrcus Company Logo] > > > > *From:* Martin Perina <mperina(a)redhat.com> > *Sent:* Monday, May 27, 2024 7:03 AM > *To:* Jayme <jaymef(a)gmail.com>; Bogdan Dumitrescu <bogdan(a)arrcus.com> > *Cc:* users(a)ovirt.org > *Subject:* Re: [ovirt-users] Re: Ovirt standalone engine ssl cert is > about to expire > > > > *IRONSCALES couldn't recognize this email as this is the first time you > received an email from this sender mperina* *@* *redhat.com > <http://redhat.com>* > > > > Hi, > > > > please take a look at Administration guide, there is a chapter around > certificate renewals: > > > > > https://www.ovirt.org/documentation/administration_guide/index.html#chap-Re… > > > > Regards, > > Martin > > > > > > On Mon, May 27, 2024 at 2:44 PM Jayme <jaymef(a)gmail.com> wrote: > > I believe all you should need to do is run engine-setup --offline > > > > On Sat, May 25, 2024 at 10:14 AM Bogdan Dumitrescu via Users < > users(a)ovirt.org> wrote: > > Need some help with the renewal of the ssl certificate (I believe it is a > self-signed cert )that is about to expire in a month, this is a standalone > ovirt engine running software Version:4.3.4.3-1.el7. The certificate was > good for 5 years and it is about to expire. > > > > As I understand correctly, this certificate is for the https access for > the management page. > > > > Can this be done on a running system without affecting any hosts or VMs? > > > > Any instructions for the standalone ovirt engine scenario that you guys > can share? > > > > Thanks a lot, > > > > > > > > *Software Version:*4.3.4.3-1.el7 > > > > > > > > > > > > > > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/4U47HFOL27EP6… > > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/VN3E2JZ4E2HSZ… > > > > -- > > Martin Perina > Manager, Software Engineering > Red Hat Czech s.r.o. > > [EXTERNAL] > -- Martin Perina Manager, Software Engineering Red Hat Czech s.r.o.

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Re: [External] : Re: Unable Access VM console VNC
by Ankit Sharma 28 May '24

28 May '24

Hi Marcos, Yes. I did that but unfortunately it did work! Thanks, AS

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Re: Ovirt standalone engine ssl cert is about to expire
by Jayme 28 May '24

28 May '24

I believe all you should need to do is run engine-setup --offline On Sat, May 25, 2024 at 10:14 AM Bogdan Dumitrescu via Users < users(a)ovirt.org> wrote: > Need some help with the renewal of the ssl certificate (I believe it is a > self-signed cert )that is about to expire in a month, this is a standalone > ovirt engine running software Version:4.3.4.3-1.el7. The certificate was > good for 5 years and it is about to expire. > > > > As I understand correctly, this certificate is for the https access for > the management page. > > > > Can this be done on a running system without affecting any hosts or VMs? > > > > Any instructions for the standalone ovirt engine scenario that you guys > can share? > > > > Thanks a lot, > > > > > > > > *Software Version:*4.3.4.3-1.el7 > > > > > > > > > > > > > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/4U47HFOL27EP6… >

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Unable Access VM console VNC
by Ankit Sharma 24 May '24

24 May '24

Hi Guy, i have installed ovirt4.5 on centos stream 9 and Unable Access VM console VNC. Error request timeout. Thanks, AS

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Zanata account required
by Kola Samkola 22 May '24

22 May '24

Hello! help me get an account https://zanata.ovirt.org/ to translate the interface, thank you)

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Re: [External] : Importing VMs from CentOS 8 Streams to Oracle 8.9 oVirt (QXL issues)
by Gilboa Davara 18 May '24

18 May '24

Hello, Thanks for the prompt reply. Can I somehow modify the VM configuration on disk (v5 data storage on an NFS share) before importing the VM (using Storage domain / NFS / VM import). Alternatively can I somehow get OLVM to ignore the error when trying to import the VM, and use the UI to switch VGA/VNC? - Gilboa On Thu, May 16, 2024 at 3:55 PM Marcos Sungaila via Users <users(a)ovirt.org> wrote: > Hi Gilboa, > > > > The spice protocol has been deprecated by Red Hat for over 3 years. It may > still be available in CentOS or RHEL versions but not in OL. > > It cannot be enabled. > > > > Marcos > > > > *From:* Gilboa Davara <gilboad(a)gmail.com> > *Sent:* Thursday, May 16, 2024 9:07 AM > *To:* oVirt Users <users(a)ovirt.org> > *Subject:* [External] : [ovirt-users] Importing VMs from CentOS 8 Streams > to Oracle 8.9 oVirt (QXL issues) > > > > Hello all, > > > > I'm evaluating switching our existing oVirt clusters to Oracle Linux 8 > oVirt 4.5. > > It seems that Oracle has completely disabled QXL/Spice (leaving only VGA > and Cirrus) on their oVirt fork (1). > > I'm trying to import a VM from an existing oVirt data storage into an > Oracle cluster, but I'm getting > > 'VAR__ACTION__IMPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_ILLEGAL_VM_DISPLAY_TYPE_IS_NOT_SUPPORTED_BY_OS' > error. > > Comparing the spice-related packages in Oracle and CentOS based oVirt > installation, I see no changes. > > > > Two questions: > > 1. Can I somehow enable QXL support in Oracle oVirt? > > 2. Assuming I can't, can I somehow editing the VM configuration without > mounting in a temporary CentOS based cluster, editing the configuration and > reimporting it into Oracle? > > > > Thanks, > > Gilboa > > > > 1) > https://forums.oracle.com/ords/apexds/post/olvm-ol8-spice-support-completel… > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/CRCZZDBSH5QFD… >

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Importing VMs from CentOS 8 Streams to Oracle 8.9 oVirt (QXL issues)
by Gilboa Davara 16 May '24

16 May '24

Hello all, I'm evaluating switching our existing oVirt clusters to Oracle Linux 8 oVirt 4.5. It seems that Oracle has completely disabled QXL/Spice (leaving only VGA and Cirrus) on their oVirt fork (1). I'm trying to import a VM from an existing oVirt data storage into an Oracle cluster, but I'm getting 'VAR__ACTION__IMPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_ILLEGAL_VM_DISPLAY_TYPE_IS_NOT_SUPPORTED_BY_OS' error. Comparing the spice-related packages in Oracle and CentOS based oVirt installation, I see no changes. Two questions: 1. Can I somehow enable QXL support in Oracle oVirt? 2. Assuming I can't, can I somehow editing the VM configuration without mounting in a temporary CentOS based cluster, editing the configuration and reimporting it into Oracle? Thanks, Gilboa 1) https://forums.oracle.com/ords/apexds/post/olvm-ol8-spice-support-completel…

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Ovirt Host Machine Use Case
by Muhesh Kumar 16 May '24

16 May '24

Hi Everyone, Initially, In ovirt host machine qemu-kvm is running in 5901,5902,5903,5904,5906 and 5907. But suddenly, It has now running with additional ports 5900 and 5905. Can anyone know why this kind of ports ovirt is newly adding without any actions taking in machines. I Didn't restart any services in host machines.

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Ovirt standalone engine ssl cert is about to expire
by Bogdan Dumitrescu 15 May '24

15 May '24

Need some help with the renewal of the ssl certificate (I believe it is a self-signed cert )that is about to expire in a month, this is a standalone ovirt engine running software Version:4.3.4.3-1.el7. The certificate was good for 5 years and it is about to expire. As I understand correctly, this certificate is for the https access for the management page. Can this be done on a running system without affecting any hosts or VMs? Any instructions for the standalone ovirt engine scenario that you guys can share? Thanks a lot, Software Version:4.3.4.3-1.el7

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Re: [External] : NFS Share file to mount in ovIrt
by De Lee 14 May '24

14 May '24

Hi, I've tried it mount the nfs directly on the KVM it works. Unfortunately it fails with ovirt node. Regards. DK

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i can't access console with noVNC or VNC client(console.vv)
by z84614242＠163.com 14 May '24

14 May '24

i installed the ovirt 4.5 engine on centos stream 9 and add a ovirt node(ovirt node 4.5 iso) to this engine. i am going to run my vm on this node. i follow the instruction to create the data center, the cluster, the storage domain, upload the image. everything is fine. and after i create a vm with ubuntu image attach, i found that i can't visit the console. when i using the noVNC, it says "Something went wrong, connection is closed", when i visit vnc with virt-viewver, is says "Failed to complete handshake Error in the pull function". i try to change the console type to Bochs one and it appear the same. i change to QXL mode and the vm can't start any more. i check the log, it says "unsupported configuration: domain configuration does not support video model 'qxl'". so now i can't visit my vm by anyway. i deploy the engine follow the official instruction and keep mostly option default but why still have this issue. why the noVNC says "Something went wrong" instead of telling me what is actually wrong

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Migrating Engine to a new host
by Fabrice Bacchella 13 May '24

13 May '24

To upgrade both hardware and software for the engine, I will move it to a different physical server, with a different hostname. The HTTP interface to manage it is handled by my own PKI, so I managed it myself and don’t request help from oVirt. But I wonder if there is other trap that I will need to check. Will old hosts accept communication for a new engine once I will have migrated the database ?

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stomp timeout in org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient
by Chris Smith 08 May '24

08 May '24

Hi all, I'm randomly getting this in the engine logs; These times are UTC+1 so are different to the ovirt host logs. 2024-05-06 21:10:47,238+01 ERROR [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) [] Connection timeout for host '10.10.3.36', last response arrived 1604 ms ago. 2024-05-06 21:10:51,750+01 INFO [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) [] Connecting to /10.10.3.36 2024-05-06 21:11:18,994+01 ERROR [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) [] Connection timeout for host '10.10.3.36', last response arrived 1885 ms ago. 2024-05-06 21:11:22,197+01 INFO [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) [] Connecting to /10.10.3.36 2024-05-06 21:11:27,767+01 ERROR [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) [] Connection timeout for host '10.10.3.36', last response arrived 1779 ms ago. and I'm trying to debug why it can't connect. The vdsm logs on the ovirt host don't give me many clues about what's happening. I see the stomp requests; These times are UTC; 2024-05-06 20:10:51,807+0000 INFO (Reactor thread) [ProtocolDetector.Detector] Detected protocol stomp from ::ffff: 10.10.3.125:36296 (protocoldetector:125) 2024-05-06 20:10:51,807+0000 INFO (Reactor thread) [Broker.StompAdapter] Processing CONNECT request (stompserver:95) 2024-05-06 20:10:51,808+0000 INFO (JsonRpc (StompReactor)) [Broker.StompAdapter] Subscribe command received (stompserver:124) 2024-05-06 20:10:51,808+0000 INFO (JsonRpc (StompReactor)) [Broker.StompAdapter] Subscribe command received (stompserver:124) 2024-05-06 20:11:23,240+0000 INFO (Reactor thread) [ProtocolDetector.Detector] Detected protocol stomp from ::ffff: 10.10.3.125:36302 (protocoldetector:125) 2024-05-06 20:11:23,416+0000 INFO (JsonRpc (StompReactor)) [Broker.StompAdapter] Processing CONNECT request (stompserver:95) 2024-05-06 20:11:23,505+0000 INFO (JsonRpc (StompReactor)) [Broker.StompAdapter] Subscribe command received (stompserver:124) 2024-05-06 20:11:23,505+0000 INFO (JsonRpc (StompReactor)) [Broker.StompAdapter] Subscribe command received (stompserver:124) but there's nothing around these entries to tell me what's causing the timeout. Is there a script or command I can run to simulate what's happening here to try and figure out what's going on? Thanks, -- Chris Smith Hosting Systems Administrator P +61 2 9045 2800 E csmith(a)squiz.net Level 1, 435a Kent Street, Sydney NSW 2000 www.squiz.net -- Squiz named leader GigaOm's Digital Experience Platform Radar report, 2023-24. Read about the report <https://www.squiz.net/blog/squiz-dxp-platform-leader-in-gigaom-radar-report>!

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oVirt 4.5.6 + Windows 11 + TPM oddness
by Daniel Henninger 07 May '24

07 May '24

Hi folk, I'm running into a very bizarre situation. To start with, I am able to install Windows 11 perfectly fine, with or without Secure Boot enabled, and the TPM appears to function regardless. From the Windows OS itself, I can confirm that Get-TPM, tpm.msc, windows security, etc all show that the TPM looks happy and healthy and well received. However -- the system logs are absolutely flooded with the following error: The initialization of the Trusted Platform Module (TPM) failed. The TPM may be in failure mode. To allow diagnosis, contact the TPM manufacturer with the attached information. And this appears to correlate with SCCM being unable to properly set up a client certificate and register. But I am not exagerating when I say it's flooding the logs -- I am currently staring at a system log with 668 log entries, 97% of which are the same TPM error repeated. Does anyone have any ideas what might be going on or have seen this before? I'm running out of ideas. =/ Thanks!

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equivalent to VMrare RDM
by Nathanaël Blanchet 06 May '24

06 May '24

Hello, I'd like to use dell csi driver for dynamic provisionning into vms like described here: https://dell.github.io/csm-docs/docs/deployment/csmoperator/drivers/powerma… Does something equivalent to RDM (Raw Device Mapping) exist with oVirt? https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.do… I'm aware about host devices features, but tht is not relevant in this case. Thank you. -- Nathanaël Blanchet Administrateur Systèmes et Réseaux Service Informatique et REseau (SIRE) Département des systèmes d'information 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 blanchet(a)abes.fr

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Cannot create bond
by dcaamano＠apexutilities.ca 06 May '24

06 May '24

Hello, I recently deploy two KVM hosts and one KVM engine. things seem to be working good so far; however, I cannot create bonds in my KVM hosts. I have 4 interfaces, two enabled (cable connected) and two disabled (cable unplugged, not needed at the moment). The ovirmgmt network is running on one of the active interfaces. I have done the following: Create LACP bond with both connected interfaces. Create Load-balancing XOR bond with both connected interfaces. Create LACP bond with both unplugged interfaces. Create Load-balancing XOR bond with both unplugged interfaces. Create LACP bond with one connected and one unplugged interface. Create Load-balancing XOR bond with one connected and one interfaces. Remove server from KVM engine, create bond at the host level using cockpit, try to add the host back into KVM cluster. None of the options i have tried successfully create the bond in the KVM cluster. I will appreciate your assistance in getting this to work. Environment details OS on all servers: Oracle Linux 8.9 with kernel 5.15.0-205.149.5.1.el8uek.x86_64 KVM engine: running on a virtual machine in vCenter KVM hosts: physical servers Software version: 4.5.4-1.0.31.el8 Thank you

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ARM64 Host Failed to Add to Cluster
by limajasond＠yahoo.com 06 May '24

06 May '24

Hi, I configured a Rocky Linux 9 ARM64 Raspberry Pi 4B as an oVirt Host. When adding to a new Cluster under an established Datacenter it fails configuring OVN, I did make sure ovirt-provider-ovn and ovirt-provider-ovn-driver was installed. The error I found after digging into the ansible yml file on the Hosted Engine and the Python py related to configuring OVN. Ultimately the error is below: [root@ovirtnode3 ~]# vdsm-tool ovn-config 192.168.1.50 ovirtnode3.test.com Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/tool/ovn_config.py", line 117, in get_network return networks[net_name] KeyError: 'ovirtnode3.test.com' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/bin/vdsm-tool", line 195, in main return tool_command[cmd]["command"](*args) File "/usr/lib/python3.9/site-packages/vdsm/tool/ovn_config.py", line 63, in ovn_config ip_address = get_ip_addr(get_network(network_caps(), net_name)) File "/usr/lib/python3.9/site-packages/vdsm/tool/ovn_config.py", line 119, in get_network raise NetworkNotFoundError(net_name) vdsm.tool.ovn_config.NetworkNotFoundError: ovirtnode3.test.com Running vdsm-tool list-nets displays nothing. Something is off in the script, but I admit I am not sure how. I know oVirt says Aarch64 is experimental, but this is unusable if vdsm-tool can't even gather/list the networks or config the OVN.

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Re: Ovirt Hyperconverged Storage
by Thomas Hoberg 29 Apr '24

29 Apr '24

And I might have misread where your problems actually are... Because oVirt was born on SAN but tries to be storage agnostic, it creates its own overlay abstraction, a block layer that is then managed within oVirt even when you use NFS or GlusterFS underneath. "The ISO domain" has actually been deprecated and ISO images can be put into any domain type (e.g. also data). But they still have to be uploaded to that domain via the management engine GUI, you can't just copy the ISO images somewhere within the files and directories oVirt might create and expect them to be visible to the GUI or the VMs.

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Re: Ovirt Hyperconverged Storage
by Thomas Hoberg 29 Apr '24

29 Apr '24

Hi Tim, HA, HCI and failover either require or at least benefit from consistent storage. The original NFS reduce the risk of inconsistency to single files, Gluster puts the onus of consistency mostly the clients and I guess Ceph is similar. iSCSI has been described as a bit the worst of everything in storage and I can appreciate that view in a HA scenario because it doesn't help with consistency. Of course, its block layer abstraction isn't really that different from SAN or NFS 4.x object storage. I last experimented with iSCSI 20 years ago, mostly because it seemed so great for booting even less cooperative diskless hosts than Sun workstations over the network. But if I had a reliable TrueNAS and wanted to run oVirt, I'd just go with NFS. AFAIK oVirt was born on SAN but with SAN outside of oVirt's purvue. So if your iSCSI setup behaves like a SAN, oVirt should be easy to get going, but I've never tried myself. And the lack of tried and tested tutorials or videos from 20 different sources might be the reason oVirt didn't quite push out everybody else.

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Oracle Virtualization Manager 4.5 anyone?
by Thomas Hoberg 29 Apr '24

29 Apr '24

Redhat's decision to shut down RHV caught Oracle pretty unprepared, I'd guess, who had just shut down their own vSphere clone in favor of a RHV clone a couple of years ago. Oracle is even less vocal about their "Oracle Virtualization" strategy, they don't even seem to have a proper naming convention or branding. But they have been pushing out OV releases without a publicly announced EOL almost a year behind Redhat for the last years. And after a 4.4 release in September 22, a few days ago on December 12th actually a release 4.5 was made public. I've operated oVirt 4.3 with significant quality issues for some years and failed to make oVirt 4.4 work with any degree of acceptable stability but Oracle's variant of 4.4 proved to be rather better than 4.3 on CentOS7 with no noticable bugs, especially in the Hyperconverged setup that I am using with GlusterFS. I assumed that this was because Oracle based their 4.4 in fact on RHV 4.4 and not oVirt, but since they're not telling, who knows? One issue with 4.4 was that Oracle is pushing their UE-Kernel and that created immediate issues e.g. with VDO missing modules for UEK and other stuff, but that was solved easily enough by using the RHEL kernel. With 4.5 Oracle obviously can't use RHV 4.5 as a base, because there is no such thing with RHV declared EOL and according to Oracle their 4.5 is based on oVirt 4.5.4, which made the quality of that release somewhat questionable, but perhaps they have spent the year that has passed since productively killing bugs... only to be caught by surprise again, I presume, by an oVirt release 4.5.5 on December 1st, that no one saw coming! Long story slightly shorter, I've been testing Oracle's 4.5 variant a bit and it's not without issues. But much worse, Oracle's variant of oVirt seems to be entirely without any community that I could find. Now oVirt has been a somewhat secret society for years, but compared to what's going on with Oracle this forum is teaming with life! So did I just not look around enough? Is there a secret lair where all those OV users are hiding? Anyhow, here is what I've tested so far and where I'd love to have some feedback: 1. Setting up a three node HCI cluster from scratch using OL8.9 and OV 4.5 Since I don't have extra physical hardware for a 3 node HCI I'm using VMware workstation 17.5 on a Workstation running Windows 2022, a test platform that has been working for all kinds of virtualization tests from VMware ESXi, via Xcp-ng and ovirt. Created three VMs with OL8.9 minimal and then installed OV 4.5. I used the UEK default kernels and then had an issue when Ansible is trying to create the (local) management engine: the VM simply could not reach the Oracle repo servers to install the packages inside the ME. Since that VM is entirely under the control of Ansible and no console access of any type is possible in that installation phase, I couldn't do diagnostics. But with 4.4 I used to have similar issues and there switching back to the Redhat kernel for the ME (and the hosts) resolved them. But with 4.5 it seems that UEK has become a baked-in dependency: the OV team doesn't even seem to do any testing with the Redhat kernel any more. Or not with the HCI setup, which has become deprecated somewhere in oVirt 4.4... Or not with the Cockpit wizard, which might be in a totally untested state, or.... Doing the same install on OL 8.9 with OV 4.4, however, did work just fine and I was even able to update to 4.5 afterwards, which was a nice surprise... ...that I could not repeat on my physical test farm using three Atoms. There switching to the UEK kernel on the hosts caused issues, hosts were becoming unresponsive, file systems inaccessible, even if they were perfectly fine at the Gluster CLI level and in the end the ME VM simply would not longer start. Switching back to the Redhat kernel resolved things there. In short, switching between the Redhat kernel and UEK, which should be 100% transparent to all things userland including hypervisors, doesn't work. But my attempts to go with a clean install of 4.5 on a Redhat kernel or UEK is also facing issues. So far the only thing that has worked was a single node HCI install using UEK and OV 4.5 and upgrading to OV 4.5 on a virtualized triple node OV 4.4 HCI cluster. Anyone else out there trying these things? I was mostly determined to move to Proxmox VE, but Oracle's OV 4.5 seemed to be handing a bit of a life-line to oVirt and the base architecture is just much more powerful (or less manual) than Proxmox, which doesn't have a management engine.

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