January 2025 - Users - oVirt List Archives

VM hangs when expanding direct LUN
by John Mortensen 11 Feb '25

11 Feb '25

Hi, We have multible oVirt clusters (based on CentOS 9 Stream) with several nodes (based on the 4.5 el9 node image) in each and a great number of virtual machines (mainly RHEL 8). The problem we encounter is random, it happens sometimes and other times not. Backend storage consists of SAN attached IBM Storwize V7000. Problem is when we expand a LUN on the storage system and wishes to expand it in oVirt for use in the VM, sometimes this process hangs the VM completely, it shows as running in oVirt GUI, it cannot be paused/shutdown from the GUI - only way to shut it down is to login to the node running the VM and from virsh run a destroy command. Anyone else encountered this problem? /John

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Re: Help With CPU Type
by Jorge Visentini 31 Jan '25

31 Jan '25

Hi. If you do this right, you will need downtime because the VM's processor model will change, even though the VM's processor is only showing the family. Another thing that can happen is that you change the family and the host becomes non-operational in the cluster, so you would have to test that at least. But you can roll back to the original cluster family. I have done this in the past and as far as I remember, the only thing that causes a warning on the VM is that it is running on a different cluster, that's all. Please correct me if I'm wrong. Cheers! Em qui., 23 de jan. de 2025 às 02:13, Daniel Martins via Users < users(a)ovirt.org> escreveu: > Hi There, > > > > Please may you assist me with the below? > > > > I need to remove an oVirt host within a cluster that is using CPU Type > Intel Westmere IBRS SSBD Family. Once the host is removed i need to change > the CPU type to Intel Broadwell which the remaining hosts Use. > > > > So my question is will there need to be down time on the Virtual machines > to change this? > > > > Regards, > > > > > > > > > > > > > > > _______________________________________________ > 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/IEJW5M6KUHWW5… > -- Att, Jorge Visentini +55 55 98432-9868

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Edit/Change MAC Address Pools
by milad.norouzi1370＠gmail.com 31 Jan '25

31 Jan '25

According to this link: https://www.ovirt.org/documentation/administration_guide/index.html#sect-MA…, we can edit the MAC address pool. Question: If I edit the MAC address pool, what effect will it have on the existing VMs' MAC addresses? Is there any mention in the documentation or elsewhere that indicates this change could be harmful to current configurations?

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oVirt does not get keycloak groups
by Christian Fischer 31 Jan '25

31 Jan '25

Hi everyone. I have setup a oVirt Installation with Keycloak for a PoC-Evaluation but i'm actually struggling with Keycloak Groups sync to oVirt. I Added Active Directory Users and also a Group Mapper for LDAP Groups -> in Keycloak i see all Users and also that they belong to Groups but the Group-Membership is not populated to oVirt back. As a result i can't grant Permissions groupwise - only per user. For the initial group-sync i ticked the Option "Drop non-existing groups during sync" which also deleted the ovirt-administrator group. Maybe this is the main Problem here. I created this group again and unchecked this option but it still does not sync the groups. What do you recommend? Purge the system and do a clean install or is there another easy fix out there? Thanks, have a nice weekend. Greetings Christian

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Questions and Suggestions for oVirt
by Daniel Gurgel 30 Jan '25

30 Jan '25

With the new leadership of the project, most users who admire and support oVirt would like to know the roadmap and future plans. From my perspective, I understand that Red Hat discontinued its support purely for financial reasons. Therefore, this is probably one of the key areas where oVirt needs to strengthen. Wouldn't it be worth seeking support and collaboration with Veeam and Oracle, given its "OLVM"? Especially considering that, after the VMware/Broadcom licensing changes, Oracle has been aggressively offering OLVM to customers as a migration alternative. A positive development was Veeam Backup & Replication recently adding support for OLVM. This has increased interest in the solution, but there are still limitations, such as migration/backup/restore between different hypervisors (interestingly, this feature is available for Proxmox/KVM, which uses similar technology). These are some of the main questions from customers: 1. When will it be updated to Enterprise Linux 9 or 10? 2. What support will be available for new technologies? 3. How about a change in the Engine/Manager, allowing VMs to be managed even when the Engine is unavailable! (Sorry, but this is one of oVirt's biggest bottlenecks, and inevitably, comparisons with VMware/VCenter arise.) 4. Support for VM migration between Datacenters should also be carefully considered. **Note**: The oVirt website needs to be more user-friendly for general users. I also suggest a fundraising campaign—I would be happy to contribute, and I believe the entire user base would as well!

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Re: [EXT]Re: Re: [SOLVED] Re: Re: How to re-enroll (or renew) host certificates for a single-host hosted-engine deployment?
by Cosmin Cioranu 29 Jan '25

29 Jan '25

I have checked the solution and it works, apart from the console feature of the virtual machine. In my case, once a got control over the host, migrated all the vms and then Maintenance and then Enroll Certificate. So: an updated version ``` set -x ## Make the script echo everything out, so if it fails you know where set -e ## Make the script STOP on any error set my_date="$(date +"%Y%m%d%H%M%S")" # Backup the existing CA files /bin/cp -p /etc/pki/ovirt-engine/private/ca.pem /etc/pki/ovirt-engine/private/ca.pem.$my_date /bin/cp -p /etc/pki/ovirt-engine/ca.pem{,.$my_date} /bin/mv /etc/pki/ovirt-engine/certs/ca.der{,.$my_date} # Sign the key openssl x509 -signkey /etc/pki/ovirt-engine/private/ca.pem -in /etc/pki/ovirt-engine/ca.pem -out /etc/pki/ovirt-engine/ca.pem.new -days 3650 -sha256 openssl x509 -in /etc/pki/ovirt-engine/ca.pem.new -text > /etc/pki/ovirt-engine/ca.pem.new.full # Put the files into place /bin/mv -f /etc/pki/ovirt-engine/ca.pem.new.full /etc/pki/ovirt-engine/ca.pem /bin/cp -p /etc/pki/ovirt-engine/ca.pem.new /etc/pki/ovirt-engine/certs/ca.der ``` Now you need to copy the new CA file over to the host: Source: ENGINE `/etc/pki/ovirt-engine/ca.pem` Dest: HOST `/tmp/new-ca.pem` ########### On the oVirt Host ########### # Create a CSR using the information from the existing certificate and the existing key: openssl x509 -x509toreq -in /etc/pki/libvirt/clientcert.pem -out /tmp/HOST.csr -signkey /etc/pki/libvirt/private/clientkey.pem Now you need to copy the new CA file over to the host: Source: HOST `/tmp/HOST.csr` Dest: ENGINE `/etc/pki/ovirt-engine/requests/full.hostname.com.req` ########### On the ENGINE HOST ########### # Now sign it: /usr/share/ovirt-engine/bin/pki-enroll-request.sh --name=full.hostname.com # NB -- adding --san results in an error: --san=host.na.me (So no Subject Alternate Names) Now you need to copy the new Certificate file over to the host: Source: ENGINE /etc/pki/ovirt-engine/certs/full.hostname.com.cer Dest: HOST /tmp/new-cert.pem ########### On the oVirt Host ########### (see bellow the written script) #!/bin/bash #set -x set -e mydate="$(date +"%Y%m%d%H%M%S")" echo "[.] reference ${mydate}" for x in /tmp/new-ca.pem /tmp/new-cert.pem ; do echo -n "[.] checking $x" if [ ! -e "$x" ]; then echo "[not found]" exit else echo "[found]" fi done for x in /etc/pki/libvirt/clientcert.pem /etc/pki/vdsm/certs/vdsmcert.pem /etc/pki/vdsm/libvirt-migrate/server-cert.pem /etc/pki/vdsm/libvirt-spice/server-cert.pem /etc/pki/vdsm/libvirt-vnc/server-cert.pem; do echo -n "copying $x to ${x}.${mydate}" /bin/mv -n $x ${x}.${mydate} echo "[done]"; echo -n "[.] copying /tmp/new-cert.pem to $x" /bin/cp /tmp/new-cert.pem ${x} echo "[done]" echo -n "[.] setting permissions to $x 644 root:kvm" chmod 644 ${x} chown root:kvm ${x} echo "[done]" done for x in /etc/pki/vdsm/libvirt-migrate/ca-cert.pem /etc/pki/vdsm/certs/cacert.pem /etc/pki/vdsm/libvirt-vnc/ca-cert.pem /etc/pki/vdsm/libvirt-spice/ca-cert.pem /etc/pki/CA/cacert.pem; do echo -n "copying $x to ${x}.${mydate}" /bin/mv -n $x ${x}.${mydate} echo "[done]" echo -n "[.] copying /tmp/new-ca.pem to $x" /bin/cp /tmp/new-ca.pem ${x} echo "[done]"; echo -n "[.] setting permissions to $x 644 root:kvm" chmod 644 ${x} chown root:kvm ${x} echo "[done]" done for x in /etc/pki/vdsm/keys/vdsmkey.pem; do echo -n "copying $x to ${x}.${mydate}" /bin/mv -n $x ${x}.${mydate} echo "[done]" echo -n "[.] copying /etc/pki/libvirt/private/clientkey.pem to $x" /bin/cp /etc/pki/libvirt/private/clientkey.pem ${x} echo "[done]"; echo -n "[.] setting permissions to $x 644 root:kvm" chmod 644 ${x} chown root:kvm ${x} echo "[done]" done echo "[.] Checks " openssl x509 -in /etc/pki/libvirt/clientcert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/certs/cacert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/certs/vdsmcert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/libvirt-migrate/ca-cert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/libvirt-migrate/client-cert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/libvirt-migrate/server-cert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/libvirt-spice/ca-cert.pem -noout -dates openssl x509 -in /etc/pki/vdsm/libvirt-spice/server-cert.pem -noout -dates ```` Note: I whould backup the entire pki folder on both node and engine.

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snapshot solution: Existing snapshots that were taken after this one will be erased.
by dhanaraj.ramesh＠yahoo.com 29 Jan '25

29 Jan '25

Hi Team, when I want to commit the older snapshots I'm getting warning stating " Existing snapshots that were taken after this one will be erased.". is there any way we can retain the latest snapshots as is in the chain? I knew cloning and template export options are there to secure that latest snapshot data but these are will consume additional space in storage and take time.

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Re: [External] : Re: Unable to migrate vm with 4 (500g) disks from vmware to ovirt.
by dushyantk.sun＠gmail.com 24 Jan '25

24 Jan '25

Hi Marcos and Simon, Provided document was helpful. Thank you.

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Re: [External] : Re: Unable to migrate vm with 4 (500g) disks from vmware to ovirt.
by dushyantk.sun＠gmail.com 23 Jan '25

23 Jan '25

Currently linux vm which i am trying to migrate has 4 (500GB) disk. All disks on same datastore. It is iscsi datastore. Do we have any configuration where we can enabled verbose mode while migration is going on to see what is happening as currently unable to identify failure. Also is there any limitation if vms with multiple disk is not possible to migrate?

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Unable to migrate vm with 4 (500g) disks from vmware to ovirt.
by dushyantk.sun＠gmail.com 23 Jan '25

23 Jan '25

I have vm with multiple disk attached to it. While migrating vm from vmware to ovirt, it started but gets failed after 5-6 hours. However vms with single disk migrated successfully. Following ovirt UI to migrate vm. Please let me know if any one come across such scenario

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