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any configuration when clients can't directly access oVirt cluster?
by yam yam 09 Aug '21

09 Aug '21

Hello, Under my environment, clients must go through a proxy to reach the oVirt cluster(physical nodes), so that I applied DNAT rules for engine and VM IPs to clients. but there were still some issues like VNC console(+browser) don't work, and I'm not sure other features work well. so, I'm wondering whether there is any oVirt configuration or some guides for such case using the proxy. Thanks,

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ISO Upload in in Paused by System Status
by louisb＠ameritech.net 09 Aug '21

09 Aug '21

I'm attempting to upload an ISO that is approximately 9GB in size. I've succssfullly started th upload process via the oVirt Management Console/Disk. The upload started however, it now has a status of "Paused by System". My storage type is set to NFS Data. Is something happing the back ground that contributing to the "Paused by System"? I have mor the 84TB of space available so I don't think it is a space issue. Is there something that I need to do? At this time I'm going to wait and see if it moves forward on its own. Please provide me with any help or direction. Thanks

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adding new host failed with error "CPU does not match the Cluster CPU Type"
by jimod4＠yahoo.com 09 Aug '21

09 Aug '21

i get the below error when i try to add a new kvm host to the cluster. I know that the cpu is a haswell, Intel E5-2640 v3. if i run "virsh capabilities" it returns <model>Haswell-noTSX-IBRS</model>. My KVM server is redhat 8.4 fully patched today on an DL-360 Gen9. oVirt is at 4.4.7.7-1.el8. i have tried many diffent CPU settings for the cluster and none of them work. this is new oVirt install. ERROR: "The host CPU does not match the Cluster CPU Type and is running in a degraded mode. It is missing the following CPU flags: vmx, model_Haswell-noTSX, nx. Please update the host CPU microcode or change the Cluster CPU Type." MIRCOCODE: root@kvm09 ~]# dmesg | grep 'microcode' [ 0.000000] microcode: microcode updated early to revision 0x46, date = 2021-01-27 [ 1.625108] microcode: sig=0x306f2, pf=0x1, revision=0x46 [ 1.625753] microcode: Microcode Update Driver: v2.2.

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Adding new host to a cluster and stuck at "Detect if host is a prebuilt image".
by fauzuwan.nazri93＠gmail.com 08 Aug '21

08 Aug '21

Hello everyone, I try to add a host to a new cluster and during provisioning the event showed "Detect if host is a prebuilt image." and it just stuck there forever. Version: ovirt-node-ng-image-update-placeholder-4.4.7.1-1.el8.noarch Actual results: Host provisioning stuck at "Detect if host is a prebuilt image." Expected results: Provisioning successful. By checking the ovirt host deployment playbook logs, I can't found any useful output. Below is the last output form the logs. 2021-08-06 19:25:12 MYT - TASK [ovirt-host-deploy-facts : Detect if host is a prebuilt image] ************ 2021-08-06 19:25:12 MYT - ok: [ovirth02.zyzyx.virtnet] 2021-08-06 19:25:12 MYT - { "status" : "OK", "msg" : "", "data" : { "uuid" : "a7b74be9-30ab-4ca4-b2b6-e7af6b86bb6c", "counter" : 24, "stdout" : "ok: [ovirth02.zyzyx.virtnet]", "start_line" : 22, "end_line" : 23, "runner_ident" : "f155ccc8-f6a8-11eb-94c2-00e04cf8ff45", "event" : "runner_on_ok", "pid" : 1549383, "created" : "2021-08-06T11:25:10.333884", "parent_uuid" : "00e04cf8-ff45-b99d-863c-000000000182", "event_data" : { "playbook" : "ovirt-host-deploy.yml", "playbook_uuid" : "c1e368bf-e183-47c0-b6f5-377114c20eab", "play" : "all", "play_uuid" : "00e04cf8-ff45-b99d-863c-000000000007", "play_pattern" : "all", "task" : "Detect if host is a prebuilt image", "task_uuid" : "00e04cf8-ff45-b99d-863c-000000000182", "task_action" : "set_fact", "task_args" : "", "task_path" : "/usr/share/ovirt-engine/ansible-runner-service-project/project/roles/ovirt-host-deploy-facts/tasks/host-os.yml:26", "role" : "ovirt-host-deploy-facts", "host" : "ovirth02.zyzyx.virtnet", "remote_addr" : "ovirth02.zyzyx.virtnet", "res" : { "changed" : false, "ansible_facts" : { "node_host" : true }, "_ansible_no_log" : false }, "start" : "2021-08-06T11:25:10.254355", "end" : "2021-08-06T11:25:10.333550", "duration" : 0.079195, "event_loop" : null, "uuid" : "a7b74be9-30ab-4ca4-b2b6-e7af6b86bb6c" } } } 2021-08-06 19:25:12 MYT - TASK [ovirt-host-deploy-facts : Reset configuration of advanced virtualization module] *** 2021-08-06 19:25:12 MYT - TASK [ovirt-host-deploy-facts : Find relevant advanced virtualization module version] *** 2021-08-06 19:25:12 MYT - TASK [ovirt-host-deploy-facts : Enable advanced virtualization module] ********* 2021-08-06 19:25:12 MYT - TASK [ovirt-host-deploy-facts : Ensure Python3 is installed for CentOS/RHEL8 hosts] *** Thank You.

2 1

fencing and (virtual) power button pression reaction
by Gianluca Cecchi 07 Aug '21

07 Aug '21

Hello, in RHCS we have the fencing concept for targets very similar to the oVirt ones: avoid data corruption and also fast react to problematic hosts situations. The implementation is quite similar to the oVirt one, with several fencing agents sometimes common, like fence_ipmilan. In RHCS documentation there is a chapter describing how to configure hosts so that they don't react to power button pressure. This guarantees that failover is as fast as possible, and also that the same host to be fenced, could create more damages if it reacts and begins the shutdown procedure instead of simply powering off. See: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/ht… It seems to me that oVirt / RHV lack this feature. Inside oVirt NGN and also RHVH-H, the /etc/systemd/logind.conf file is not configured with an entry of type HandlePowerKey=ignore So in some cases of tests I'm doing, I see in its virtual console that the to-be-fenced host begins its OS shutdown flow when it detects the power button pressure. Typically after 2-3 seconds the system powers off and then on again, but I also saw about 10 seconds delays in one case. I have opened a case (number 03002278) for my RHV products, but I would also like to get your comments here if I'm wrong with my considerations. Gianluca

2 1

Architecture design docs
by Jesse Hu 07 Aug '21

07 Aug '21

Hi there, is there any any architecture design docs for oVirt (Engine & Node & VDSM) for neebee to learn? https://www.ovirt.org/Architecture gives 404. Thanks.

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Re: Install of RHV 4.4 failing - "Host is not up, please check logs, perhaps also on the engine machine"
by Brock Collins 07 Aug '21

07 Aug '21

Needed to add appropriate DNS entry / MAC for the VM It is a 192.168.2.122 typically* Sent from my iPhone

1 0

Data recovery from (now unused, but still mounted) Gluster Volume for a single VM
by David White 06 Aug '21

06 Aug '21

My hyperconverged cluster was running out of space. The reason for that is a good problem to have - I've grown more in the last 4 months than in the past 4-5 years combined. But the downside was, I had to go ahead and upgrade my storage, and it became urgent to do so. I began that process last week. I have 3 volumes: [root@cha2-storage dwhite]# gluster volume list data engine vmstore I did the following on all 3 of my volumes: 1) Converted cluster from Replica 3 to Replica 2, arbiter 1 - I did run into an issue where some VMs were paused, but I was able to poweroff and power on those VMs again with no issue 2) Ran the following on Host 2: # gluster volume remove-brick data replica 1 cha1-storage.mgt.my-domain.com:/gluster_bricks/data/data force # gluster volume remove-brick vmstore replica 1 cha1-storage.mgt.my-domain.com:/gluster_bricks/vmstore/vmstore force # gluster volume remove-brick engine replica 1 cha1-storage.mgt.my-domain.com:/gluster_bricks/engine/engine force (rebuilt the array & reboot the server -- when I rebooted, I commented out the original UUIDs from /etc/fstab for the gluster storage) # lvcreate -L 2157G --zero n -T gluster_vg_sdb/gluster_thinpool_gluster_vg_sdb # lvcreate -L 75G -n gluster_lv_engine gluster_vg_sdb # lvcreate -V 600G --thin -n gluster_lv_data gluster_vg_sdb/gluster_thinpool_gluster_vg_sdb # lvcreate -V 1536G --thin -n gluster_lv_vmstore gluster_vg_sdb/gluster_thinpool_gluster_vg_sdb # mkfs.xfs /dev/gluster_vg_sdb/gluster_lv_engine # mkfs.xfs /dev/gluster_vg_sdb/gluster_lv_data # mkfs.xfs /dev/gluster_vg_sdb/gluster_lv_vmstore At this point, I ran lsblk --fs to get the new UUIDs, and put them into /etc/fstab # mount -a # gluster volume add-brick engine replica 2 cha2-storage.mgt.my-domain.com:/gluster_bricks/engine/engine force # gluster volume add-brick vmstore replica 2 cha2-storage.mgt.my-domain.com:/gluster_bricks/vmstore/vmstore force # gluster volume add-brick data replica 2 cha2-storage.mgt.my-domain.com:/gluster_bricks/data/data force So far so good. 3) I was running critically low on disk space on the replica, so I:- Let the gluster volume heal - Then I removed the Host 1 bricks from the volumes When I removed the Host 1 bricks, I made sure that there were no additional healing tasks, then proceeded to do so:# gluster volume remove-brick data replica 1 cha1-storage.mgt.my-domain.com:/gluster_bricks/data/data force # gluster volume remove-brick vmstore replica 1 cha1-storage.mgt.my-domain.com:/gluster_bricks/vmstore/vmstore force At this point, I ran into problems. All of my VMs went into a Paused state, and I had to reboot all of them. All VMs came back online, but two VMs were corrupted. I wound up re-building them from scratch. Unfortunately, we lost a lot of data on 1 of the VMs, as I didn't realize backups were broken on that particular VM. Is there a way for me to go into those disks (that are still mounted to Host 1), examine the Gluster content, and somehow mount / recover the data from the VM that we lost? Sent with ProtonMail Secure Email.

4 9

non-critical request - Disk volume label - Web-ui
by Jorge Visentini 06 Aug '21

06 Aug '21

Hi everyone! Firstly, congratulations for the evolution of the oVirt 4.4.7. A *non-critical* request for a future version... if possible, add a label in disk volumes, in Web-ui. Thank you all! [image: image.png] -- Att, Jorge Visentini +55 55 98432-9868

1 0

Wondering a way to create a universal USB Live OS to connect to VM Portal
by eta.entropy＠gmail.com 06 Aug '21

06 Aug '21

Hi All, once oVirt Infrastracture has been setup, VMs created, assigned to users and they manage them through VM Portal, I'm wondering if there is an easy way to provide to end users a USB key that will just > plug into any computer or boot from it > connect to given VM Portal to manage assigned VMs > connect to given SPICE console to enter assigned VMs Just like a Linux Live USB with preconfigured service to be started and to connect to VM Portal or SPICE console Is there something already available to start from ? Is this something doable or am I dreaming ? Thanks for any input

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