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Upgrade from 4.3.5 to 4.3.10 HE Host issue
by Vrgotic, Marko 03 Mar '21

03 Mar '21

Hi oVirt, Yesterday I upgraded one of my oVIrt platform from 4.3.5 to 4.3.10. Platform has 10Hosts with 3Hosts as Hosts for HA. Before upgrade, all three Hosts were acknowledged Hosts for HE (little happy crown). Pre upgrade: Host1 – HE available host Host2 – HE current host Host3 – HE available host Upgraded first HE to 4.3.10, than started with HE Hosts – post upgrade of Host2, the crown disappeared and did not show up. This happens sometimes, and I usually reinstall the host, than execute HE UNDEPLOY and DEPLOY, which fixes the state. However, this time, after such actions, the server is still not an acknowledged HE host – no crown. However, if I try to remove it, oVIrt says that looks like HE is deploy on it and need to be removed, but command “hosted-engine –vm-status” says you must deploy first. I removed the Host, reinstalled the OS on it, deployed it again as new, synced all networks, than deploy once more with HE Deploy, still same issue. Any suggestions? ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic(a)activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message.

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Multipath flapping with SAS via FCP
by Benoit Chatelain 02 Mar '21

02 Mar '21

Hi, I have some troubles with multipath. When I add SAS disk over FCP as Storage Domain via oVirt WebUI, The first link as active, but the second is stuck as failed. Volum disk is provided from Dell Compellent via FCP, and disk is transported in SAS. multipath is flapping in all hypervisor from the same domain disk: [root@isildur-adm ~]# tail -f /var/log/messages Feb 25 11:48:21 isildur-adm kernel: device-mapper: multipath: 253:3: Failing path 8:32. Feb 25 11:48:24 isildur-adm multipathd[659460]: 36000d31003d5c2000000000000000010: sdc - tur checker reports path is up Feb 25 11:48:24 isildur-adm multipathd[659460]: 8:32: reinstated Feb 25 11:48:24 isildur-adm multipathd[659460]: 36000d31003d5c2000000000000000010: remaining active paths: 2 Feb 25 11:48:24 isildur-adm kernel: device-mapper: multipath: 253:3: Reinstating path 8:32. Feb 25 11:48:24 isildur-adm kernel: sd 1:0:1:2: alua: port group f01c state S non-preferred supports toluSNA Feb 25 11:48:24 isildur-adm kernel: sd 1:0:1:2: alua: port group f01c state S non-preferred supports toluSNA Feb 25 11:48:24 isildur-adm kernel: device-mapper: multipath: 253:3: Failing path 8:32. Feb 25 11:48:25 isildur-adm multipathd[659460]: sdc: mark as failed Feb 25 11:48:25 isildur-adm multipathd[659460]: 36000d31003d5c2000000000000000010: remaining active paths: 1 --- [root@isildur-adm ~]# multipath -ll 36000d31003d5c2000000000000000010 dm-3 COMPELNT,Compellent Vol size=1.5T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw `-+- policy='service-time 0' prio=25 status=active |- 1:0:0:2 sdb 8:16 active ready running `- 1:0:1:2 sdc 8:32 failed ready running --- VDSM generate multipath.conf like this ( I have remove commented lines for read confort ) : [root@isildur-adm ~]# cat /etc/multipath.conf # VDSM REVISION 2.0 # This file is managed by vdsm. defaults { polling_interval 5 no_path_retry 16 user_friendly_names no flush_on_last_del yes fast_io_fail_tmo 5 dev_loss_tmo 30 max_fds 4096 } blacklist { protocol "(scsi:adt|scsi:sbp)" } no_path_retry 16 } Have you some idea why this link is flapping on my two hypervisor? Thanks a lot in advance. - Benoit Chatelain

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How to enable nested virtualization
by miguel.garcia＠toshibagcs.com 02 Mar '21

02 Mar '21

Hi all, We are trying to run virtual box in a vm that is running over ovirt platform. I had followed the instruction to enable nested virtualization on host as described in this document https://ostechnix.com/how-to-enable-nested-virtualization-in-kvm-in-linux/ However I was not able to enable nested virtualization to the vm since nothing is listed from virsh console. Also tryed to edit vm configuration lookig up for "cpu mode" or "copy cpu configuration as host" Also from oVirt admin portal I had enabled host for nested virtualization through Compute > Host > selected Host > edit > Kernel Nested virtualization checked. But the host still returns: $ cat /sys/module/kvm_intel/parameters/nested N

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kvm host becomes non operational after breaking a bonding interface
by LS CHENG 02 Mar '21

02 Mar '21

Hi I have created a couple of bonding interfaces in the administrator portal, due to some miss configuration I had to break the bond interfaces, what I observe is that after breaking the bonding interfaces the KVM host becomes non operational and it stays in such state unless I add the bonding interfaces back. Anyone have observed this behaviour? Thanks

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2 Node oVirt Cluster
by justin.lamp96＠gmail.com 01 Mar '21

01 Mar '21

Hey there, I tried using oVirt for some time now and like to convert my main Proxmox Cluster (2 Nodes + RPI for Quorum) to oVirt. But I obvioulsy need three servers to do HA. Now I am asking myself: can't I just use the PI as an arbiter node for the Selfhosted-Engine on gluster? I tried running the playbook already, but it's always failing and even if the gluster deployment would go through, it would most likely fail aftwards, right? Before I waste too much energy and time into that, does anyone of you guys use a 2 node cluster? And no I can't add another node (energy + space + money)! Also I know with doing that I'm totally on my own etcetera Thanks!

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oVirt4.1 add host error. can i upgrade from 4.1 to 4.4? without updating sequentially 4.1-4.2-4.3-4.4
by grig.4n＠gmail.com 01 Mar '21

01 Mar '21

HI! There is an oVirt 4.1 self-hosted engine cluster of two hosts and a storage connected via iscsi. When trying to add another host, it gives an error: "ERROR otopi.context context._executeMethod:151 Failed to execute stage 'Setup validation': Cannot locate vdsm package, possible cause is incorrect channels". Older hosts on Centos 7.5.1804, last on Centos 7.9.2009. Is it possible to go from 4.1 to 4.4 using the third host as the main one for the transfer?

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Cant add vm network with vlan to bonded interface
by murat.celebi＠dbpro.com.tr 01 Mar '21

01 Mar '21

Hello, I am new to ovirt and try to migrate my companies vmware infra to ovirt. The Engine setup went fine without any problems. These are the steps which I am doing and having problems. 1. Prepare the KVM host by installing the RPM's. 2. Add the kvm host to the engine. Everything is working fine at this point. 3. I am creating a new Network for vm usage named VLAN10. And I am tagging the network with vlan id 10. 4. I am bonding two 25Gb/s interface's with balance-xor mode with the name bond1. 5. When I add the network VLAN10 to the bond1 interface I cant see the logical network assigned to the bond. After this step I am not able to delete the bond since I am getting errors when I try to delete the bond. Any help would be greatly appreciated. Thank you

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Re: oVirt Engine increase RAM and CPU
by Strahil Nikolov 28 Feb '21

28 Feb '21

I think that I got such case before (4.2) and the only way I managed to update the HE VM was to set the OVF update interval to 1 min and wait for an hour to pass. Best Regards,Strahil Nikolov

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Right Glusterfs Config on HA Server
by Marcel d'Heureuse 28 Feb '21

28 Feb '21

Hi Guys or Girls, I have a problem in a productive system. We use three Servers which have a Raid 5 with four Harddrives SATA 8 TB 7200 rpms. The Systems are interconnected for glusterfs with 1 GB/s. The Network Load between all three servers are between 5 and 8 % of the network. The Glusterfs has a separate VLAN which compltete isolated from other networks. Find attached a small drawing. On that server we rum as HA and there are 8 VMs installed. Most of the VMs working well but if there is high load on the system some of the VM can't write the Data in a "good" speed on the disks. The Glusterfs is configured as Replica on the Raid5 disk which is as Jbob in Glusterfs defiend. If i take a look on the iostats i can see that the Harddisk have round 50 open connections some of the glusterfs and a lot of the vms. In side the VMs i can see long iowaiting times from 300 up to 600 ms. With is on case of a Posgresql database very long. Should we configure the Raid5 controller out that the controller only should 4 disks with 8 TB and Glusterfs should connect directly to the /dev/sd[b-e]? What do you think? Will SSD HDD will help on performance but the same config with Raid5 and Jbod could be the bigger problem. Thanks Marcel

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oVirt Node install with Foreman VG issue
by simon＠justconnect.ie 28 Feb '21

28 Feb '21

Hi All, I have a server with a RAID1 disk for sda and RAID 5 disk for sdb. Following default install, prior to Cockpit Gluster and Engine wizards there is only a single Volume Group which doesn’t allow me to continue. If I manually configure the install and deselect sdb it gives other issues with multipath but at least I can resolve those. Is there a specific kickstart confuguration that should be used? Kind Regards Shimme

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