September 2019 - Users - oVirt List Archives

Re: Any real experiences with nested virtualisation?
by Strahil 05 Sep '19

05 Sep '19

I guess you want to do something like this one : http://www.chrisj.cloud/?q=node/8 As Ovirt is upstream of RHV , I believe that RDO and Ovirt have almost the same integration as in the post. Still,such setup requires a lot of knowledge about KVM, oVirt and OpenStack. Best Regards, Strahil NikolovOn Sep 4, 2019 21:36, thomas(a)hoberg.net wrote: > > First, it's a scenario the oVirt team seem to actually embrace themselves. > > I believe I have seen that type of deployment mentioned either in one of the forward looking blog posts or Red Hat summit videos. > > And then it simply makes a lot of sense to have those crucial management VMs that control the swarm of resources in a cloud run under a fault-tolerant VM management environment such as oVirt. > > As for nested virtualization, I can only provide some negative experience with oVirt. > > I've done nested virtualization with VMware, running ESX on VMWare Workstation and then some VMs underneath that ESX successfully. > > When I tried to do the same with oVirt, running an oVirt hyperconverged cluster as VMs on VMware workstation, I got reasonably far, but then every VM I tried to launch nested would just stop right at boot. > > It first happened with the hosted-engine, as that tries to start as a VM, but it happened more obviously when I tried to migrate VMs (just a plain Fedora 30 in this case) from a physical compute node running oVirt nodeOS to a virtualized compute node, running the same current oVirt nodeOS image on VMware Workstation (Windows 2016 host, if that matters). > > The machine would start the live-migration properly and then just freeze and stay frozen until I migrated it back or indeed to any other non-virtualized node. > > I haven't as yet tried to do that with nested KVM, which I believe might actually work: But it's on my things to test, so I'll report back, once I get around it. > > Actually I am wondering, a) how deep this nesting would be allowed to go and b) if the 'leaf' nodes at the last nesting level should actually have nesting support activated in their kernel parameters... > > Any insight here would be well appreciated. > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/6YDBQGIXUWTDB…

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Any real experiences with nested virtualisation?
by tonyppe＠gmail.com 04 Sep '19

04 Sep '19

I have ovirt 4.3.5 and Openstack hosts. There are 2 x openstack compute and 2 x ovirt hosts with hosted manager. I think i can simplify the management of this if I were to virtualise the openstack compute nodes as VMs on ovirt. I wanted to reach out here to gauge any other users experiences with it if at all. From the research I have done it looks like from the VM perspective, migration must not be allowed. Any info / comments / feedback appreciated. Regards,

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Re: Cannot Increase Hosted Engine VM Memory
by Dionysis K 04 Sep '19

04 Sep '19

Now i noticed another strange i deactivated the memory balloon option from the VM hosted engine and tried to update the values again with the same memory it still keeps the value of memory size at 5120 while the value of physical memory guaranteed it changed to what we desire at the 8192 value and then the error appears again in the vm engine i ckecked the engine log file it shows the same errors! is there are other logfile locations that can give us any clues ?

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Re: Cannot Increase Hosted Engine VM Memory
by Douglas Duckworth 04 Sep '19

04 Sep '19

Yes, I do. Gold crown indeed. It's the "HostedEngine" as seen attached! Thanks, Douglas Duckworth, MSc, LFCS HPC System Administrator Scientific Computing Unit<https://scu.med.cornell.edu> Weill Cornell Medicine 1300 York Avenue New York, NY 10065 E: doug(a)med.cornell.edu<mailto:doug@med.cornell.edu> O: 212-746-6305 F: 212-746-8690 On Wed, Jan 23, 2019 at 12:02 PM Simone Tiraboschi <stirabos(a)redhat.com<mailto:stirabos@redhat.com>> wrote: On Wed, Jan 23, 2019 at 5:51 PM Douglas Duckworth <dod2014(a)med.cornell.edu<mailto:dod2014@med.cornell.edu>> wrote: Hi Simone Can I get help with this issue? Still cannot increase memory for Hosted Engine. From the logs it seams that the engine is trying to hotplug memory to the engine VM which is something it should not happen. The engine should simply update engine VM configuration in the OVF_STORE and require a reboot of the engine VM. Quick question, in the VM panel do you see a gold crown symbol on the Engine VM? Thanks, Douglas Duckworth, MSc, LFCS HPC System Administrator Scientific Computing Unit<https://scu.med.cornell.edu> Weill Cornell Medicine 1300 York Avenue New York, NY 10065 E: doug(a)med.cornell.edu<mailto:doug@med.cornell.edu> O: 212-746-6305 F: 212-746-8690 On Thu, Jan 17, 2019 at 8:08 AM Douglas Duckworth <dod2014(a)med.cornell.edu<mailto:dod2014@med.cornell.edu>> wrote: Sure, they're attached. In "first attempt" the error seems to be: 2019-01-17 07:49:24,795-05 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-29) [680f82b3-7612-4d91-afdc-43937aa298a2] EVENT_ID: FAILED_HOT_SET_MEMORY_NOT_DIVIDABLE(2,048), Failed to hot plug memory to VM HostedEngine. Amount of added memory (4000MiB) is not dividable by 256MiB. Followed by: 2019-01-17 07:49:24,814-05 WARN [org.ovirt.engine.core.bll.UpdateRngDeviceCommand] (default task-29) [26f5f3ed] Validation of action 'UpdateRngDevice' failed for user admin@internal-authz. Reasons: ACTION_TYPE_FAILED_VM_IS_RUNNING 2019-01-17 07:49:24,815-05 ERROR [org.ovirt.engine.core.bll.UpdateVmCommand] (default task-29) [26f5f3ed] Updating RNG device of VM HostedEngine (adf14389-1563-4b1a-9af6-4b40370a825b) failed. Old RNG device = VmRngDevice:{id='VmDeviceId:{deviceId='6435b2b5-163c-4f0c-934e-7994da60dc89', vmId='adf14389-1563-4b1a-9af6-4b40370a825b'}', device='virtio', type='RNG', specParams='[source=urandom]', address='', managed='true', plugged='true', readOnly='false', deviceAlias='', customProperties='null', snapshotId='null', logicalName='null', hostDevice='null'}. New RNG device = VmRngDevice:{id='VmDeviceId:{deviceId='6435b2b5-163c-4f0c-934e-7994da60dc89', vmId='adf14389-1563-4b1a-9af6-4b40370a825b'}', device='virtio', type='RNG', specParams='[source=urandom]', address='', managed='true', plugged='true', readOnly='false', deviceAlias='', customProperties='null', snapshotId='null', logicalName='null', hostDevice='null'}. In "second attempt" I used values that are dividable by 256 MiB so that's no longer present. Though same error: 2019-01-17 07:56:59,795-05 INFO [org.ovirt.engine.core.vdsbroker.SetAmountOfMemoryVDSCommand] (default task-22) [7059a48f] START, SetAmountOfMemoryVDSCommand(HostName = ovirt-hv1.med.cornell.edu<http://ovirt-hv1.med.cornell.edu>, Params:{hostId='cdd5ffda-95c7-4ffa-ae40-be66f1d15c30', vmId='adf14389-1563-4b1a-9af6-4b40370a825b', memoryDevice='VmDevice:{id='VmDeviceId:{deviceId='7f7d97cc-c273-4033-af53-bc9033ea3abe', vmId='adf14389-1563-4b1a-9af6-4b40370a825b'}', device='memory', type='MEMORY', specParams='[node=0, size=2048]', address='', managed='true', plugged='true', readOnly='false', deviceAlias='', customProperties='null', snapshotId='null', logicalName='null', hostDevice='null'}', minAllocatedMem='6144'}), log id: 50873daa 2019-01-17 07:56:59,855-05 INFO [org.ovirt.engine.core.vdsbroker.SetAmountOfMemoryVDSCommand] (default task-22) [7059a48f] FINISH, SetAmountOfMemoryVDSCommand, log id: 50873daa 2019-01-17 07:56:59,862-05 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-22) [7059a48f] EVENT_ID: HOT_SET_MEMORY(2,039), Hotset memory: changed the amount of memory on VM HostedEngine from 4096 to 4096 2019-01-17 07:56:59,881-05 WARN [org.ovirt.engine.core.bll.UpdateRngDeviceCommand] (default task-22) [28fd4c82] Validation of action 'UpdateRngDevice' failed for user admin@internal-authz. Reasons: ACTION_TYPE_FAILED_VM_IS_RUNNING 2019-01-17 07:56:59,882-05 ERROR [org.ovirt.engine.core.bll.UpdateVmCommand] (default task-22) [28fd4c82] Updating RNG device of VM HostedEngine (adf14389-1563-4b1a-9af6-4b40370a825b) failed. Old RNG device = VmRngDevice:{id='VmDeviceId:{deviceId='6435b2b5-163c-4f0c-934e-7994da60dc89', vmId='adf14389-1563-4b1a-9af6-4b40370a825b'}', device='virtio', type='RNG', specParams='[source=urandom]', address='', managed='true', plugged='true', readOnly='false', deviceAlias='', customProperties='null', snapshotId='null', logicalName='null', hostDevice='null'}. New RNG device = VmRngDevice:{id='VmDeviceId:{deviceId='6435b2b5-163c-4f0c-934e-7994da60dc89', vmId='adf14389-1563-4b1a-9af6-4b40370a825b'}', device='virtio', type='RNG', specParams='[source=urandom]', address='', managed='true', plugged='true', readOnly='false', deviceAlias='', customProperties='null', snapshotId='null', logicalName='null', hostDevice='null'}. This message repeats throughout engine.log: 2019-01-17 07:55:43,270-05 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engineScheduled-Thread-89) [] EVENT_ID: VM_MEMORY_UNDER_GUARANTEED_VALUE(148), VM HostedEngine on host ovirt-hv1.med.cornell.edu<http://ovirt-hv1.med.cornell.edu> was guaranteed 8192 MB but currently has 4224 MB As you can see attached the host has plenty of memory. Thank you Simone! Thanks, Douglas Duckworth, MSc, LFCS HPC System Administrator Scientific Computing Unit<https://scu.med.cornell.edu> Weill Cornell Medicine 1300 York Avenue New York, NY 10065 E: doug(a)med.cornell.edu<mailto:doug@med.cornell.edu> O: 212-746-6305 F: 212-746-8690 On Thu, Jan 17, 2019 at 5:09 AM Simone Tiraboschi <stirabos(a)redhat.com<mailto:stirabos@redhat.com>> wrote: On Wed, Jan 16, 2019 at 8:22 PM Douglas Duckworth <dod2014(a)med.cornell.edu<mailto:dod2014@med.cornell.edu>> wrote: Sorry for accidental send. Anyway I try to increase physical memory however it won't go above 4096MB. The hypervisor has 64GB. Do I need to modify this value with Hosted Engine offline? No, it's not required. Can you please attach your engine.log for the relevant time frame? Thanks, Douglas Duckworth, MSc, LFCS HPC System Administrator Scientific Computing Unit<https://scu.med.cornell.edu> Weill Cornell Medicine 1300 York Avenue New York, NY 10065 E: doug(a)med.cornell.edu<mailto:doug@med.cornell.edu> O: 212-746-6305 F: 212-746-8690 On Wed, Jan 16, 2019 at 1:58 PM Douglas Duckworth <dod2014(a)med.cornell.edu<mailto:dod2014@med.cornell.edu>> wrote: Hello I am trying to increase Hosted Engine physical memory above 4GB Thanks, Douglas Duckworth, MSc, LFCS HPC System Administrator Scientific Computing Unit<https://scu.med.cornell.edu> Weill Cornell Medicine 1300 York Avenue New York, NY 10065 E: doug(a)med.cornell.edu<mailto:doug@med.cornell.edu> O: 212-746-6305 F: 212-746-8690 _______________________________________________ Users mailing list -- users(a)ovirt.org<mailto:users@ovirt.org> To unsubscribe send an email to users-leave(a)ovirt.org<mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/site/privacy-policy/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_site_pri…> oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_communit…> List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/WGSXQVVPJJ2CR…<https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.ovirt.org_archiv…>

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iSCSI Multipath/multiple gateways
by dan.poltawski＠tnp.net.uk 04 Sep '19

04 Sep '19

My iSCSI target (ceph-based) has multiple gateways, I’d like to ensure my hosted storage is aware of these such that each gateway can be rebooted for maintance without impacting service. What is the appropriate way to configure this so that each host knows of the multipath configuration? I do not have multiple network paths, just multiple gateways on the same network, so I think the multipath UI tool isn’t the way to do this. Any help/docs pointers appreciated. Regards, Dan

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the virtual machine crushed and I cant shutdown the vm successfully
by zhouhao＠vip.friendtimes.net 04 Sep '19

04 Sep '19

Dear ovirt developers: The trouble bothered me for a long time;Some times my vm will crush and I cant shutdown it,I had to reboot the ovirt-node to slove it; the vm's error below The ovirt-node's error below The vm's threading on the ovirt-node, the IO ratio is 100% and the vm's process change to defunct I can not kill it,every time I had to shutdown the ovirt-node on the engine website ,the vm's status always in the way to shutdown ,even if I wait for it for hours; It either failed or is shutting down and the "power off" cant shutdown the vm too. ---------------------------------------------------------------- The other infomation about my ovirt-node node-version： node hardware zhouhao(a)vip.friendtimes.net

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the virtual machine crushed and I cant shutdown the vm successfully
by zhouhao＠vip.friendtimes.net 04 Sep '19

04 Sep '19

Dear ovirt developers: The trouble bothered me for a long time;Some times my vm will crush and I cant shutdown it,I had to reboot the ovirt-node to slove it; the vm's error below The ovirt-node's error below The vm's threading on the ovirt-node, the IO ratio is 100% and the vm's process change to defunct I can not kill it,every time I had to shutdown the ovirt-node on the engine website ,the vm's status always in the way to shutdown ,even if I wait for it for hours; It either failed or is shutting down and the "power off" cant shutdown the vm too. ---------------------------------------------------------------- The other infomation about my ovirt-node node-version： node hardware zhouhao(a)vip.friendtimes.net

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the virtual machine crushed and I cant shutdown the vm successfully
by zhouhao＠vip.friendtimes.net 04 Sep '19

04 Sep '19

Dear ovirt developers: The trouble bothered me for a long time;Some times my vm will crush and I cant shutdown it,I had to reboot the ovirt-node to slove it; the vm's error below The ovirt-node's error below The vm's threading on the ovirt-node, the IO ratio is 100% and the vm's process change to defunct I can not kill it,every time I had to shutdown the ovirt-node on the engine website ,the vm's status always in the way to shutdown ,even if I wait for it for hours; It either failed or is shutting down and the "power off" cant shutdown the vm too. ---------------------------------------------------------------- The other infomation about my ovirt-node node-version： node hardware zhouhao(a)vip.friendtimes.net

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iSCSI Multipath/multiple gateways
by Dan Poltawski 03 Sep '19

03 Sep '19

My iSCSI target (ceph-based) has multiple gateways, I’d like to ensure my hosted storage is aware of these such that each gateway can be rebooted for maintance without impacting service. What is the appropriate way to configure this so that each host knows of the multipath configuration? I do not have multiple network paths, just multiple gateways on the same network, so I think the multipath UI tool isn’t the way to do this. Any help/docs pointers appreciated. Regards, Dan ________________________________ The Networking People (TNP) Limited. Registered office: Network House, Caton Rd, Lancaster, LA1 3PE. Registered in England & Wales with company number: 07667393 This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.

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engine.log flooded with "Field 'foo' can not be updated when status is 'Up'"
by Matthias Leopold 02 Sep '19

02 Sep '19

Hi, I updated my production oVirt environment from 4.3.3 to 4.3.5 today. Everything went fine so far, but there's one annoying phenomenon: When I log into the "Administration Portal" and request the VM list ("/ovirt-engine/webadmin/?locale=en_US#vms") engine.log is flooded with lines like WARN [org.ovirt.engine.core.utils.ObjectIdentityChecker] (default task-10618) [54d8c375-aa72-42f8-876e-8777d9d1a08a] Field 'balloonEnabled' can not be updated when status is 'Up' "Field", task and UUID vary and the flood stops after a while. Also listing or trying to edit other entities seems to trigger this "storm" or loop over and over again to a point that log file size is becoming an issue and interface is becoming sluggish. I can also see that CPU usage of engine java process goes up. When I log out everything is quiet and "VM Portal" is not affected at all. I have seen lines like that before and know that they are usually OK (when changing VM properties), but these logs used to be linked to singular events. I suspect that the present behaviour might be linked to VMs that have "Pending Virtual Machine changes", which are in most cases "Custom Compatibility Version" changes that still stem from the upgrade to Cluster Version 4.3. I can't be sure and I can't resolve all these pending changes now, but these should not be causing such annoying behaviour in the first place. I resorted to setting engine log level to "ERROR" right now to at least stop the log file from growing, but this not a solution. I can still see CPU load going up when using the interface. I very much hope that someone can explain whats happening and tell me how to resolve this. thanks a lot Matthias

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