April 2019 - Users - oVirt List Archives

Gluster and few iSCSI Datastores in one Data Center
by toslavik＠yandex.ru 24 Apr '19

24 Apr '19

I decided to add another cluster to the existing data center (Enable Virt Service + Enable Gluster Service). Three nodes. But after installing the nodes (without errors) Ovirt Engine loses them cyclically. From the logs you can see that this happens when you try to interrogate the connected block devices. These block devices are LVM for VM. I use several Datastores submitted via iSCSI. About 2000 virtual machines and more than 2300 LVMs. All in the neighbor cluster (one data center). Logs in https://drive.google.com/open?id=1ja7Usxx5YCFDgjD2X51z9tzn_ycPoC2g Why is this happening and what can be done in this case?

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ovirt with kvm stand alone
by igalvarez＠gmail.com 24 Apr '19

24 Apr '19

I have 3 KVM stand alone servers with no external storage. My question is, can I add these 3 KVM servers to ovirt without impact on VMs already running on KVM side? Thanks.

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Re: 4.3.x upgrade and issues with OVN
by Weber, Charles (NIH/NIA/IRP) [E] 24 Apr '19

24 Apr '19

Configuration with versions Next email will have log files. 2 sites First site: Bayview 4 nodes BL460 gen9 with 4 x 10G nics Node 1-3 have not been changed since 4.3.2 upgrade. These nodes have the network sync issue and cannot migrate VMs. OS Version: RHEL - 7 - 6.1810.2.el7.centos OS Description: CentOS Linux 7 (Core) Kernel Version: 3.10.0 - 957.10.1.el7.x86_64 KVM Version: 2.12.0 - 18.el7_6.3.1 LIBVIRT Version: libvirt-4.5.0-10.el7_6.6 VDSM Version: vdsm-4.30.11-1.el7 SPICE Version: 0.14.0 - 6.el7_6.1 CEPH Version: librbd1-10.2.5-4.el7 Open vSwitch Version: openvswitch-2.10.1-3.el7 Kernel Features: PTI: 1, IBRS: 0, RETP: 1 VNC Encryption: Disabled I evacuated node 4 and did update to 4.3.3, still had issues so tried ISO OVNode install. It does not have network sync issue. However I cannot upgrade all the nodes without scheduling cluster downtime. OS Version: RHEL - 7 - 6.1810.2.el7.centos OS Description: oVirt Node 4.3.3.1 Kernel Version: 3.10.0 - 957.10.1.el7.x86_64 KVM Version: 2.12.0 - 18.el7_6.3.1 LIBVIRT Version: libvirt-4.5.0-10.el7_6.6 VDSM Version: vdsm-4.30.13-1.el7 SPICE Version: 0.14.0 - 6.el7_6.1 CEPH Version: librbd1-10.2.5-4.el7 Open vSwitch Version: openvswitch-2.10.1-3.el7 Kernel Features: PTI: 1, IBRS: 0, RETP: 1, SSBD: 3 VNC Encryption: Disabled 1 engine, DL360g10. 4.3.3.5-1.el7 CentOS 7 patched up to today Storage: Dell Unity ISCSI What I see in the engine is that the first 3 nodes all have the public network listed as out of sync with the DC. I can migrate form node 4 to the other 3 nodes but cannot migrate off the other 3 nodes. I also cannot sync the network on the other three nodes. There have been no recent network changes. After the 4.3.3 upgrade I initially found some curious OVN errors in the logfile on nodes 3 and 4. Nodes 1 and 2 do not have these errors. However the engine did have 2 extra OVN ports defined. ovs-vsctl show be10cd3d-85fe-4985-9635-f447bfbc5e25 Bridge br-int fail_mode: secure Port "ovn-877214-0" Interface "ovn-877214-0" type: geneve options: {csum="true", key=flow, remote_ip="137.187.160.14"} error: "could not add network device ovn-877214-0 to ofproto (File exists)" Port "ovn-48e040-0" Interface "ovn-48e040-0" type: geneve options: {csum="true", key=flow, remote_ip="137.187.160.18"} Port "ovn-d6eaa1-0" Interface "ovn-d6eaa1-0" type: geneve options: {csum="true", key=flow, remote_ip="137.187.160.13"} error: "could not add network device ovn-d6eaa1-0 to ofproto (File exists)" Port br-int Interface br-int type: internal Port "ovn-f0f789-0" Interface "ovn-f0f789-0" type: geneve options: {csum="true", key=flow, remote_ip="137.187.160.13"} Second site:Harbor I upgraded to 4.3.2 and stopped any upgrades until I could deal with the migration and restarting VDSMD issues. Nodes are 3 supermicro 1U with 2x10G nics All 3 nodes are the same and from the 4.3.2 update. OS Version: RHEL - 7 - 6.1810.2.el7.centos OS Description: CentOS Linux 7 (Core) Kernel Version: 3.10.0 - 957.10.1.el7.x86_64 KVM Version: 2.12.0 - 18.el7_6.3.1 LIBVIRT Version: libvirt-4.5.0-10.el7_6.6 VDSM Version: vdsm-4.30.11-1.el7 SPICE Version: 0.14.0 - 6.el7_6.1 GlusterFS Version: [N/A] CEPH Version: librbd1-10.2.5-4.el7 Open vSwitch Version: openvswitch-2.10.1-3.el7 Kernel Features: PTI: 1, IBRS: 0, RETP: 1 VNC Encryption: Disabled 1 engine DL360 g10 with 2x10G nics running 4.3.2.1-1.el7 Storage: Dell Unity ISCSI The only issue with Harbor site while running 4.3.2 is that when I migrate a node it never finishes in the engine until I restart VDSMD on the original host. It did not exhibit this issue with 4.2.x

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Undeploy oVirt Metrics Store
by toslavik＠yandex.ru 23 Apr '19

23 Apr '19

Deployed MetricStore on the engine and hosts as per the instructions. But using some time I realized that for me the functionality is redundant, enough data collected by DWH. https://www.ovirt.org/develop/release-management/features/metrics/metrics-s… Is there an instruction on how undeploy oVirt MetricStore?

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Re: Issues post-upgrade from 4.2.8 to 4.3.2
by Vrgotic, Marko 23 Apr '19

23 Apr '19

Hey Shani, Thank you for the reply. This morning I have tried to re-provision HA Hosts. Managed successfully with HA host 2 and 3, about to do it with HA Host 1. If that goes well, I will repeat the exercises with Migration and Hosts updates to see if the issue is gone or still present. Upon those, I intend to provide full step-by-step of the Upgrade Procedure and after with what was done. Thank you for the patience. Marko Vrgotic From: Shani Leviim <sleviim(a)redhat.com> Date: Sunday, 21 April 2019 at 09:44 To: "Vrgotic, Marko" <M.Vrgotic(a)activevideo.com> Subject: Re: [ovirt-users] Issues post-upgrade from 4.2.8 to 4.3.2 Hi Marko, I've noticed that the timestamp of the error from your engine.log is one hour delayed of the one from your ui log. Is this one intentioned? Also, can you please attach a screenshot? Thanks Regards, Shani Leviim On Sun, Apr 21, 2019 at 10:12 AM Vrgotic, Marko <M.Vrgotic(a)activevideo.com<mailto:M.Vrgotic@activevideo.com>> wrote: Dear oVirt team, We have 3 Hosts HA Cluster with SHE engine. Storage is NetApp. Recently we have executed an upgrade from 4.2.8 to 4.3.2. Since then we are seeing strange behavior when trying to put Hosts to Maintenance or manually Migrate VMs between Hosts. The most repeated WARN/ERROR I am observing is following: The UI is constantly throwing an exception when trying to put HA host to maintenance or increase the SPM level. The repeated log line from engine.log I see, with regards or failing to migrate all hosts is: 2019-04-18 13:05:30,760Z WARN [org.ovirt.engine.core.bll.MigrateVmCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-83) [63d33dd1] Validation of action 'MigrateVm' failed for user SYSTEM. Reasons: VAR__ACTION__MIGRATE,VAR__TYPE__VM,SCHEDULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-02,$filterName Memory,$availableMem 3824,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-01,$filterName Memory,$availableMem 0,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,SCHEDULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-02,$filterName Memory,$availableMem 3824,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-01,$filterName Memory,$availableMem 0,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL But there is more than enough. Also from UI.log: 2019-04-18 14:05:09,007Z ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-114) [] Permutation name: 0D2DB7A91B469CC36C64386E5632FAC5 2019-04-18 14:05:09,007Z ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-114) [] Uncaught exception: com.google.gwt.event.shared.Umbrell aException: Exception caught: (TypeError) : oab(...) is null at java.lang.Throwable.Throwable(Throwable.java:70) [rt.jar:1.8.0_201] at java.lang.RuntimeException.RuntimeException(RuntimeException.java:32) [rt.jar:1.8.0_201] at com.google.web.bindery.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:64) [gwt-servlet.jar:] at com.google.gwt.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:25) [gwt-servlet.jar:] at com.google.gwt.event.shared.HandlerManager.$fireEvent(HandlerManager.java:117) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.$fireEvent(Widget.java:127) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:127) [gwt-servlet.jar:] at com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:110) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.$onBrowserEvent(Widget.java:163) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:163) [gwt-servlet.jar:] at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1415) [gwt-servlet.jar:] at com.google.gwt.user.client.impl.DOMImplStandard.dispatchEvent(DOMImplStandard.java:312) [gwt-servlet.jar:] at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:] at Unknown.Su/<(https://ovirt-staging-engine.avinity.tv/ovirt-engine/webadmin/?locale=en_US… line 9 > scriptElement) at Unknown.anonymous(Unknown) Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError) : oab(...) is null at org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterGuideModel.$onAddHost(ClusterGuideModel.java:533) at org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterGuideModel.executeCommand(ClusterGuideModel.java:617) at org.ovirt.engine.ui.uicommonweb.UICommand.$execute(UICommand.java:163) at org.ovirt.engine.ui.common.presenter.AbstractModelBoundPopupPresenterWidget.$lambda$4(AbstractModelBoundPopupPresenterWidget.java:306) at org.ovirt.engine.ui.common.presenter.AbstractModelBoundPopupPresenterWidget$lambda$4$Type.onClick(AbstractModelBoundPopupPresenterWidget.java:306) at com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:55) [gwt-servlet.jar:] at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:76) [gwt-servlet.jar:] at com.google.web.bindery.event.shared.SimpleEventBus.$doFire(SimpleEventBus.java:173) [gwt-servlet.jar:] ... 12 more Can you give me some advice on how to proceed? This started happening since upgrade. Kindly awaiting your reply, Marko Vrgotic _______________________________________________ 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/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/7SVM3XWFREH3W…

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Re: Migrate HE between ISCSI storages
by Strahil 23 Apr '19

23 Apr '19

Hi, I think you can go to the disk section in UI and migrate the disk from 1 storage domain to another. Best Regards, Strahil Nikolov

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Is there a way to tell whether a permission set for a VM is inherited using REST API?
by Anton E 23 Apr '19

23 Apr '19

Hi everyone! My question is in the subject for the most part. I'm trying to backup a vm parameters, including the linked attributes, namely the permissions. But I don't want the inherited permissions to be included into the backup, I only need the attributes specific to the vm. It looks like there is no difference between the inherited and the vm-specific permissions in the output from /ovirt-engine/api/vms/<vm-id>/permissions service. What is the best way to distinguish the specific permissions from the inherited ones? It seems I can follow the link to the particular permission and see whether the vm attribute is set on it and it points to the VM I need, but that would require numerous REST requests to be done. Is there a more elegant way? Maybe I can somehow filter the output of /ovirt-engine/api/vms/<vm-id>/permissions to only include the required info? Thanks in advance. Best regards, Anton.

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oVirt 4.3.3 gluster option cluster.choose-local added to 'Optimize for Virt Store'
by Strahil Nikolov 22 Apr '19

22 Apr '19

Hello Community, can someone tell me why the option cluster.choose-local was added to "Optimize for Virt Store" ?Testing my cluster after the patching showed reduced performance , due to relying constantly on network instead of using local NVME brick.I have checked my older volumes and they did not have that option. Is there any benefit to not use the local brick ?Any issues to reset that option and use local brick for reading ? Best Regards,Strahil Nikolov

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Re: Is there a way to tell whether a permission set for a VM is inherited using REST API?
by Tentaclius 22 Apr '19

22 Apr '19

Hi Shani, I'm aware of this attribute, but my understanding is it only applies for a vm to template or template to vm operations. I don't see how it can be used in order to get the list of vm-specific permissions for an existing VM. Could you please provide an example of that? Thanks and regards, Anton. On Mon, Apr 22, 2019 at 2:22 PM Shani Leviim <sleviim(a)redhat.com> wrote: > Hi Anton, > In that case, how about using this one: > http://ovirt.github.io/ovirt-engine-api-model/master/#services/vms/methods/… > > > *Regards,* > > *Shani Leviim* > > > On Mon, Apr 22, 2019 at 1:35 PM Tentaclius <tentaclius(a)gmail.com> wrote: > >> Hi Shani, >> >> thanks for your reply. >> >> My question is not about assigning permissions, but rather about querying >> permissions assigned to a given VM. >> I need to get a list of permissions, assigned to the VM without the >> permissions this VM inherits from parent objects. Unluckily for me the >> /ovirt-engine/api/vms/<vm-id>/permissions service returns the list >> containing both VM-specific and inherited permissions, which cannot be >> distinguished. >> >> Thanks and regards, >> Anton. >> >> On Mon, Apr 22, 2019 at 1:29 PM Shani Leviim <sleviim(a)redhat.com> wrote: >> >>> Hi Anton, >>> You can assign permissions to the VM by using the following syntax: >>> >>> POST /ovirt-engine/api/vms/ yyy/permissions >>> >>> <permission> >>> <role> >>> <name> username</name> >>> </role> >>> <user id=" xxx"/> >>> </permission> >>> >>> For further information, you can visit here: >>> http://ovirt.github.io/ovirt-engine-api-model/master/#services/assigned_per… >>> >>> Hope it helps! >>> >>> >>> *Regards,* >>> >>> *Shani Leviim* >>> >>> >>> On Mon, Apr 22, 2019 at 1:04 PM Anton E <tentaclius(a)gmail.com> wrote: >>> >>>> Hi everyone! >>>> >>>> My question is in the subject for the most part. >>>> I'm trying to backup a vm parameters, including the linked attributes, >>>> namely the permissions. But I don't want the inherited permissions to be >>>> included into the backup, I only need the attributes specific to the vm. It >>>> looks like there is no difference between the inherited and the vm-specific >>>> permissions in the output from /ovirt-engine/api/vms/<vm-id>/permissions >>>> service. >>>> >>>> What is the best way to distinguish the specific permissions from the >>>> inherited ones? It seems I can follow the link to the particular permission >>>> and see whether the vm attribute is set on it and it points to the VM I >>>> need, but that would require numerous REST requests to be done. Is there a >>>> more elegant way? Maybe I can somehow filter the output of >>>> /ovirt-engine/api/vms/<vm-id>/permissions to only include the required info? >>>> >>>> Thanks in advance. >>>> >>>> Best regards, >>>> Anton. >>>> _______________________________________________ >>>> 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/AVHAC4SSJWVYY… >>>> >>>

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Import of VMs failing - 0% progress on qemu-img
by Callum Smith 22 Apr '19

22 Apr '19

Dear All, We've exported some VMs from our old oVirt infrastructure and want to import them into the new one, but qemu-img appears to be failing. We have mounted an export domain populated from the old oVirt in the new hosted engine and are using the GUI to import the VM. Manually running the command sits at 16% CPU, 0% network usage and no progress. It appears to lock the NFS mount and ls and lsof both hang. sudo -u vdsm /usr/bin/qemu-img convert -p -t none -T none -f raw <path to source> -O raw <path to dest> Conversely a simple cp will work (ruling out file permissions errors): sudo -u vddm cp <path to source> <path to test> What might we be doing wrong? Regards, Callum -- Callum Smith Research Computing Core Wellcome Trust Centre for Human Genetics University of Oxford e. callum(a)well.ox.ac.uk<mailto:callum@well.ox.ac.uk>

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Can't create pool after update to 4.3.3
by kiv＠intercom.pro 22 Apr '19

22 Apr '19

Hi all. After update my oVirt to 4.3.3 i can't create new pool. I make new template and trying to create new pool - but can't select any template, selection field is empty. I have this error: Uncaught exception occurred. Please try reloading the page. Details: Exception caught: undefined Please have your administrator check the UI logs

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4.3.x upgrade and issues with OVN
by Charles Weber 22 Apr '19

22 Apr '19

Hi everyone, We have had a pair of Ovirt clusters at work, starting with the 3.x. I replaced last year with 4.x cluster on new machines. 4.2 worked great, but when I upgraded to 4.3.2 and now .3 I immediately ran into host networking issues resulting in hung or unable totally to migrate VMs. Configuration notes: 1. I use commercial star.x.x.x SSL cert on engine installed per Ovirt.org instructions 2. I have 2 untagged NICs assigned to ovirtmgmt and Public, both on the same IP range network. I also have another set of VLANs tagged on various NICs. 1 cluster uses HP blades with lots of NICs, the other uses supermicro 1Us with only 2 NICs. 3. I upgraded both engines and hosts to 4.3.2 from 4.2.8. I started seeing hung migrations cleared by restarting vdsm. 4. All computers involved run current CentOS 7.6 5. Both clusters use iscsi on dedicated tagged storage VLAN, seems fine. 6. I upgraded 1 engine and 1 host to 4.3.3 and things got worse. I have not updated any hosts or the second engine since. 7. The 4 hosts on the 4.3.3 engine now have out of sync error that refuses to clear for my Public network. 8. 2 OV 4.3.2 nodes had the following errors with 2 ovn ports. Here is example, perhaps related to the genev_sys_6081 error. ovn-d6eaa1-0: attempting to add tunnel port with same config as port 'ovn-f0f789-0' (::->137.187.160.13 ovn-877214-0: attempting to add tunnel port with same config as port 'ovn-483528-0' 9. I deleted and uninstalled all ovirt related rpms on one node, then did clean node install using latest 4.3 release. Same errors. 10. I downloaded latest node iso, installed on same host, upgraded to to 4.3.3.1 node and joined cluster. The node installation has no errors and can migrate to my other hosts. All networks are in sync. The migration hangs. Restarting VDSMD clears the hung migration. 11. None of the other hosts can migrate VMs to the new node. Here are excerpts from 3.2 node on 3.3 engine log file. Apr 17, 2019, 2:43:04 PM Check for available updates on host BRCVN3 was completed successfully with message 'ovirt-host, cockpit-ovirt-dashboard, vdsm-client, ovirt-release43, ovirt-host, ovirt-hosted-engine-setup, vdsm-api, vdsm-jsonrpc, ovirt-ansible-hosted-engine-setup, ovirt-host-dependencies and 12 others. To see all packages check engine.log.'. oVirt Apr 17, 2019, 2:43:04 PM Host BRCVN3 has available updates: ovirt-host, cockpit-ovirt-dashboard, vdsm-client, ovirt-release43, ovirt-host, ovirt-hosted-engine-setup, vdsm-api, vdsm-jsonrpc, ovirt-ansible-hosted-engine-setup, ovirt-host-dependencies and 12 others. To see all packages check engine.log.. oVirt Apr 17, 2019, 2:27:39 PM Host BRCVN3's following network(s) are not synchronized with their Logical Network configuration: Public. oVirt Apr 16, 2019, 5:53:05 PM Failed to sync all host BRCVN3 networks c1ba631c-7be5-4be0-abbb-a37b6bb7d26d oVirt Apr 16, 2019, 5:53:05 PM (1/1): Failed to apply changes on host BRCVN3. (User: admin@internal-authz) 455a260f oVirt Apr 16, 2019, 5:53:05 PM VDSM BRCVN3 command HostSetupNetworksVDS failed: Bridge Public has interfaces set([u'vnet19', u'vnet12', u'vnet10', u'vnet11', u'vnet16', u'vnet17', u'vnet14', u'vnet15', u'vnet0', u'vnet2', u'vnet3', u'vnet4', u'vnet7', u'vnet8', u'vnet9']) connected oVirt Apr 16, 2019, 5:52:59 PM (1/1): Applying network's changes on host BRCVN3. (User: admin@internal-authz) 455a260f oVirt Apr 16, 2019, 5:32:07 PM Check for available updates on host BRCVN3 was completed successfully with message 'no updates found.'. oVirt Apr 16, 2019, 5:16:40 PM Host BRCVN3's following network(s) are not synchronized with their Logical Network configuration: Public. oVirt Apr 16, 2019, 3:33:36 PM Migration failed (VM: Hwebdev, Source: BRCVN3, Destination: BRCVN4). bd21f294-0170-47d1-845e-c64c52abbab4 oVirt Apr 16, 2019, 3:33:36 PM Migration started (VM: Hwebdev, Source: BRCVN3, Destination: BRCVN4, User: admin@internal-authz). bd21f294-0170-47d1-845e-c64c52abbab4 oVirt Apr 16, 2019, 2:49:36 PM Migration failed (VM: Hwebdev, Source: BRCVN3, Destination: BRCVN4). 7c04f7a6-8f88-4c64-99f9-e621724fc7ff oVirt Apr 16, 2019, 2:49:36 PM Migration started (VM: Hwebdev, Source: BRCVN3, Destination: BRCVN4, User: admin@internal-authz). 7c04f7a6-8f88-4c64-99f9-e621724fc7ff oVirt Apr 16, 2019, 2:22:03 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 2:11:02 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 2:10:02 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 2:05:46 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 2:03:16 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 2:02:16 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 2:00:16 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 1:59:01 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 1:57:31 PM VDSM BRCVN3 command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '[Errno 19] genev_sys_6081 is not present in the system'} oVirt Apr 16, 2019, 1:57:05 PM

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Re: Help with 4.3.3 re-setup
by Strahil 22 Apr '19

22 Apr '19

Hi Michael, I know how you feel abiut VDO. I wass in the same boat until I starrted using systemd's mount units.Since then I do not have any issues. For now try the following: Boot 1 host via rescue dvd , chroot into the system and install the vdo and kvdo packages (maybe reinstall is more correct) . Once then, try to run the vdo service (still in chroot) and try to make it work. Then, just rebuild the initramfs (dracut -f -k kernel-version) and reboot. Check if your VDO, bricks and Gluster are operational again. If yes, do the other nodes. Once done - run 'gluster volume heal my-volume full' (replace my-volume with actual name). This will force gluster to sync all bricks. P.S.: Now, I'm using gluster snapshot for recovery between engine upgrades (HostedEngine is stopped while makking the snapahot). Best Regards, Strahil NikolovOn Apr 21, 2019 20:44, michael(a)wanderingmad.com wrote: > > I updated my ovirt from 4.3.2 to 4.3.3 and everything went bad, my gluster volumes were constantly dropping out and getting unsynced and everything was just running slower than molasses. So I thought I would reload the hosts from ovirt node to Centos and re-do the storage, thinking that may help. I tried using centos, but I was never able to add centos hosts back to the ovirt engine due to a gluster error in the logs, so I went and downloaded ovirt node 4.3.3, and now after spending an hour reloading all the servers with ovirt node, One of the nodes I can't access the cockpit on, and the other two have broken VDO modules, the modules are installed but don't exist in the kernel, and when I removed the module, I lost all network configuration, and when I re-installed it, I get a scriptlet error on compilation and there is still a missing VDO module. This is now the 3rd time i've hit this VDO issue and i'm really frustrated right now, should I just go back to 4.3.2? I just redownloa > ded the latest 4.3.3 ISO today. > _______________________________________________ > 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/QA2SMYRZCXQYR…

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Help with 4.3.3 re-setup
by michael＠wanderingmad.com 22 Apr '19

22 Apr '19

I updated my ovirt from 4.3.2 to 4.3.3 and everything went bad, my gluster volumes were constantly dropping out and getting unsynced and everything was just running slower than molasses. So I thought I would reload the hosts from ovirt node to Centos and re-do the storage, thinking that may help. I tried using centos, but I was never able to add centos hosts back to the ovirt engine due to a gluster error in the logs, so I went and downloaded ovirt node 4.3.3, and now after spending an hour reloading all the servers with ovirt node, One of the nodes I can't access the cockpit on, and the other two have broken VDO modules, the modules are installed but don't exist in the kernel, and when I removed the module, I lost all network configuration, and when I re-installed it, I get a scriptlet error on compilation and there is still a missing VDO module. This is now the 3rd time i've hit this VDO issue and i'm really frustrated right now, should I just go back to 4.3.2? I just redownloa ded the latest 4.3.3 ISO today.

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Issues post-upgrade from 4.2.8 to 4.3.2
by Vrgotic, Marko 21 Apr '19

21 Apr '19

Dear oVirt team, We have 3 Hosts HA Cluster with SHE engine. Storage is NetApp. Recently we have executed an upgrade from 4.2.8 to 4.3.2. Since then we are seeing strange behavior when trying to put Hosts to Maintenance or manually Migrate VMs between Hosts. The most repeated WARN/ERROR I am observing is following: The UI is constantly throwing an exception when trying to put HA host to maintenance or increase the SPM level. The repeated log line from engine.log I see, with regards or failing to migrate all hosts is: 2019-04-18 13:05:30,760Z WARN [org.ovirt.engine.core.bll.MigrateVmCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-83) [63d33dd1] Validation of action 'MigrateVm' failed for user SYSTEM. Reasons: VAR__ACTION__MIGRATE,VAR__TYPE__VM,SCHEDULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-02,$filterName Memory,$availableMem 3824,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-01,$filterName Memory,$availableMem 0,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,SCHEDULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-02,$filterName Memory,$availableMem 3824,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-01,$filterName Memory,$availableMem 0,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL But there is more than enough. Also from UI.log: 2019-04-18 14:05:09,007Z ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-114) [] Permutation name: 0D2DB7A91B469CC36C64386E5632FAC5 2019-04-18 14:05:09,007Z ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-114) [] Uncaught exception: com.google.gwt.event.shared.Umbrell aException: Exception caught: (TypeError) : oab(...) is null at java.lang.Throwable.Throwable(Throwable.java:70) [rt.jar:1.8.0_201] at java.lang.RuntimeException.RuntimeException(RuntimeException.java:32) [rt.jar:1.8.0_201] at com.google.web.bindery.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:64) [gwt-servlet.jar:] at com.google.gwt.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:25) [gwt-servlet.jar:] at com.google.gwt.event.shared.HandlerManager.$fireEvent(HandlerManager.java:117) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.$fireEvent(Widget.java:127) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:127) [gwt-servlet.jar:] at com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:110) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.$onBrowserEvent(Widget.java:163) [gwt-servlet.jar:] at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:163) [gwt-servlet.jar:] at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1415) [gwt-servlet.jar:] at com.google.gwt.user.client.impl.DOMImplStandard.dispatchEvent(DOMImplStandard.java:312) [gwt-servlet.jar:] at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:] at Unknown.Su/<(https://ovirt-staging-engine.avinity.tv/ovirt-engine/webadmin/?locale=en_US… line 9 > scriptElement) at Unknown.anonymous(Unknown) Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError) : oab(...) is null at org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterGuideModel.$onAddHost(ClusterGuideModel.java:533) at org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterGuideModel.executeCommand(ClusterGuideModel.java:617) at org.ovirt.engine.ui.uicommonweb.UICommand.$execute(UICommand.java:163) at org.ovirt.engine.ui.common.presenter.AbstractModelBoundPopupPresenterWidget.$lambda$4(AbstractModelBoundPopupPresenterWidget.java:306) at org.ovirt.engine.ui.common.presenter.AbstractModelBoundPopupPresenterWidget$lambda$4$Type.onClick(AbstractModelBoundPopupPresenterWidget.java:306) at com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:55) [gwt-servlet.jar:] at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:76) [gwt-servlet.jar:] at com.google.web.bindery.event.shared.SimpleEventBus.$doFire(SimpleEventBus.java:173) [gwt-servlet.jar:] ... 12 more Can you give me some advice on how to proceed? This started happening since upgrade. Kindly awaiting your reply, Marko Vrgotic

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VM Snapshots not erasable and not bootable
by Jonathan Baecker 21 Apr '19

21 Apr '19

Hello, I make automatically backups of my VMs and last night there was making some new one. But somehow ovirt could not delete the snapshots anymore, in the log it show that it tried the hole day to delete them but they had to wait until the merge command was done. In the evening the host was totally crashed and started again. Now I can not delete the snapshots manually and I can also not start the VMs anymore. In the web interface I get the message: VM timetrack is down with error. Exit message: Bad volume specification {'address': {'bus': '0', 'controller': '0', 'type': 'drive', 'target': '0', 'unit': '0'}, 'serial': 'fd3b80fd-49ad-44ac-9efd-1328300582cd', 'index': 0, 'iface': 'scsi', 'apparentsize': '1572864', 'specParams': {}, 'cache': 'none', 'imageID': 'fd3b80fd-49ad-44ac-9efd-1328300582cd', 'truesize': '229888', 'type': 'disk', 'domainID': '9c3f06cf-7475-448e-819b-f4f52fa7d782', 'reqsize': '0', 'format': 'cow', 'poolID': '59ef3a18-002f-02d1-0220-000000000124', 'device': 'disk', 'path': '/rhev/data-center/59ef3a18-002f-02d1-0220-000000000124/9c3f06cf-7475-448e-819b-f4f52fa7d782/images/fd3b80fd-49ad-44ac-9efd-1328300582cd/47c0f42e-8bda-4e3f-8337-870899238788', 'propagateErrors': 'off', 'name': 'sda', 'bootOrder': '1', 'volumeID': '47c0f42e-8bda-4e3f-8337-870899238788', 'diskType': 'file', 'alias': 'ua-fd3b80fd-49ad-44ac-9efd-1328300582cd', 'discard': False}. When I check the path permission is correct and there are also files in it. Is there any ways to fix that? Or to prevent this issue in the future? In the attachment I send also the engine.log Regards Jonathan

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Re: Ovirt gluster arbiter within hosted VM
by Strahil 20 Apr '19

20 Apr '19

With GlusterD2 , you can use thin arbiter - which can be deployed in the cloud. Do not try to setup regular arbiter far away from the data bicks or yoir performance will be awful. Best Regards, Strahil NikolovOn Apr 19, 2019 13:28, Alex K <rightkicktech(a)gmail.com> wrote: > > > > On Fri, Apr 19, 2019 at 1:14 PM Scott Worthington <scott.c.worthington(a)gmail.com> wrote: >> >> And where, magically, is that node's storage going to live? > > In the disk of the VM. Let me know if I need to clarify further. >> >> >> You can't fake a proper setup of gluster. > > Not trying to fake it. Trying to find a solution with the available options. >> >> >> On Fri, Apr 19, 2019, 5:00 AM Alex K <rightkicktech(a)gmail.com> wrote: >>> >>> Hi all, >>> >>> I have a two node hyper-converged setup which are causing me split-brains when network issues are encountered. Since I cannot add a third hardware node, I was thinking to add a dedicated guest VM hosted in same hyper-converged cluster which would do the arbiter for the volumes. >>> >>> What do you think about this setup in regards to stability and performance? >>> I am running ovirt 4.2. >>> >>> Thanx, >>> Alex >>> _______________________________________________ >>> 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/LTDOAMBKVE5BP…

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Re: Ovirt gluster arbiter within hosted VM
by Strahil 20 Apr '19

20 Apr '19

As long as the VM is not hosted by those 2 hyperconverged nodes - there should be no problem. Another option is a small machine with a single SSD. I'm using Lenovo Tiny M-series as an arbiter. Best Regards, Strahil NikolovOn Apr 19, 2019 12:59, Alex K <rightkicktech(a)gmail.com> wrote: > > Hi all, > > I have a two node hyper-converged setup which are causing me split-brains when network issues are encountered. Since I cannot add a third hardware node, I was thinking to add a dedicated guest VM hosted in same hyper-converged cluster which would do the arbiter for the volumes. > > What do you think about this setup in regards to stability and performance? > I am running ovirt 4.2. > > Thanx, > Alex

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Replica 3 distribute-replicated - data placement and fault tolerance
by Leo David 20 Apr '19

20 Apr '19

Hello Everyone, I did some fio performance tests on a particular vm and I have noticed things that I do not understand regarding how data is placed along the bricks. I am sure this is a lack of knowledge, but I would really appreciate any help in understanding this, I did a bit of research on the internet, but just could't find something relevant. I have one replica 3 distributed-replicated arbitrated volume, across 18 bricks ( 9 nodes, 2 jbods per node ). The volume was created as: node1 - brick1, node-2, brick1,.....node9-brick1, node1 - brick2, node-2, brick2,.....node9-brick2 As far as i've understood, under the hood there are sets of 3 times replicated data ( subvolumes ) which are assigned to the first 3 bricks, next set of replicated data to the next set of 3 bricks, and so on.. Now, I have this testing vm runign one node one. When I've started the fio test, i've noticed incresed gluster traffic from node 1 to node2,4 and 5 So I assumed that the vm disk is data resides on a subvolume allocated to bricks from these hosts. Then I have migrated the vm on node 2, and did the same test. Now the increased treffic is generated from node2 to node1, 4, and 5.. What I do not understand is: - why gluster client ( ovirt host ) is sending data to 3 bricks if the volume is arbitrated - shouldn't it send only to 2 of them ? - why are there 4 brick implicated in this subvolume - what would it be the fault tolerance level in this setup ,ie: how many hosts can I take down and still having the volume serving IO requests; can they be random ? I am sorry for my lack of knowledge, I am just trying to understand what is happening so I can deploy a decent proper setup of an hci environment. Thank you, Leo -- Best regards, Leo David

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Re: Ovirt gluster arbiter within hosted VM
by Alex K 19 Apr '19

19 Apr '19

On Fri, Apr 19, 2019 at 1:14 PM Scott Worthington < scott.c.worthington(a)gmail.com> wrote: > And where, magically, is that node's storage going to live? > In the disk of the VM. Let me know if I need to clarify further. > > You can't fake a proper setup of gluster. > Not trying to fake it. Trying to find a solution with the available options. > > On Fri, Apr 19, 2019, 5:00 AM Alex K <rightkicktech(a)gmail.com> wrote: > >> Hi all, >> >> I have a two node hyper-converged setup which are causing me split-brains >> when network issues are encountered. Since I cannot add a third hardware >> node, I was thinking to add a dedicated guest VM hosted in same >> hyper-converged cluster which would do the arbiter for the volumes. >> >> What do you think about this setup in regards to stability and >> performance? >> I am running ovirt 4.2. >> >> Thanx, >> Alex >> _______________________________________________ >> 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/LTDOAMBKVE5BP… >> >

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Ovirt gluster arbiter within hosted VM
by Alex K 19 Apr '19

19 Apr '19

Hi all, I have a two node hyper-converged setup which are causing me split-brains when network issues are encountered. Since I cannot add a third hardware node, I was thinking to add a dedicated guest VM hosted in same hyper-converged cluster which would do the arbiter for the volumes. What do you think about this setup in regards to stability and performance? I am running ovirt 4.2. Thanx, Alex

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Ovirt-engine self hostd
by Dennis Perfors 19 Apr '19

19 Apr '19

Hi, We have build Ovirt-engine self hosted. We have created 2 vlans 1 services and 1 student. This works good. Services vlan 192.168.60.0/24 gateway ip 192.168.60.1 on this card Student vlan 192.168.10.0/24 gateway ip 192.168.10.1 on this network card Everything seems to be oke, but the probem is on the vlan. On the node 192.168.60.3, there is no internet connection when we do yum update -y But there is no internet connection on the host. I cant do yum update -y or do anything else. Here more information: ^Chttp://mirror.cj2.nl/centos/7.6.1810/extras/x86_64/repodata/repomd.xml: [Errno 14] curl#56 - "Callback aborted" Trying other mirror. ^Chttp://mirror.sitbv.nl/centos/7.6.1810/extras/x86_64/repodata/repomd.xml: [Errno 14] curl#56 - "Callback aborted" Trying other mirror. http://mirror.serverius.net/centos/7.6.1810/extras/x86_64/repodata/repomd.x…: [Errno 14] curl#7 - "Failed to connect to 2a03:3f40:1::15: Network is unreachable" [root@bastion ~]# ping nu.nl PING nu.nl (52.85.140.48) 56(84) bytes of data. 64 bytes from server-52-85-140-48.man50.r.cloudfront.net (52.85.140.48): icmp_seq=1 ttl=241 time=12.8 ms ^C [root@bastion ~]# ping alibabia.com PING alibabia.com (137.175.26.243) 56(84) bytes of data. 64 bytes from 137.175.26.243 (137.175.26.243): icmp_seq=1 ttl=115 time=144 ms 64 bytes from 137.175.26.243 (137.175.26.243): icmp_seq=2 ttl=115 time=144 ms ^C ipv4.method: manual ipv4.dns: 1.1.1.1 ipv4.dns-search: -- ipv4.dns-options: "" ipv4.dns-priority: 0 ipv4.addresses: 192.168.60.3/24 ipv4.gateway: 192.168.60.1 ipv4.routes: -- ipv4.route-metric: -1 ipv4.route-table: 0 (unspec) ipv4.ignore-auto-routes: no ipv4.ignore-auto-dns: no public (active) target: default icmp-block-inversion: no interfaces: ovirtmgmt sources: services: ssh dhcpv6-client ovirt-postgres ovirt-https ovn-central-firewall-service ovirt-fence-kdump-listener ovirt-imageio-proxy ovirt-websocket-proxy ovirt-http ovirt-vmconsole-proxy ovirt-provider-ovn https http cockpit libvirt-tls snmp vdsm ovirt-imageio ovirt-vmconsole ports: 9986/tcp 22/tcp 6081/udp 6100/tcp protocols: masquerade: yes forward-ports: port=1337:proto=tcp:toport=22:toaddr=192.168.60.3 port=80:proto=tcp:toport=80:toaddr=192.168.60.5 source-ports: icmp-blocks: rich rules: rule family="ipv4" source address="0.0.0.0/24" accept [root@athena ~]# Portfowarding also works to the host 192.168.60.3. so that is no poiint. But only traffic from the insidehost to outside is not working. Thanks

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Rebrandind Problems
by siovelrm＠gmail.com 19 Apr '19

19 Apr '19

hello I made a rebranding of my ovirt 4.3.2, but something went wrong and I saved it from the original incorrectly without realizing it. Please I need the original "ovirt.brand" and "ovirt" directories when ovirt 4.3.2 is installed. Where can I get them to be able to restore them? Greetings

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Re: Expand existing gluster storage in ovirt 4.2/4.3
by Strahil 19 Apr '19

19 Apr '19

Recently , it was discussed in the mailing lists and dev mentioned that distributed replicated volumes are not officially supported, but some users use them. Even if not supported, it still should work without issues.If you think not to go this way, you can create a new 3 node cluster which will be fully suppported. Otherwise, if you go towards replicated distributed volumes , you just need to provide another set of 3 bricks and once added you can rebalance in order to distribute the files accross the sets. Here is an old thread that describes it for replica 2 volume types: https://lists.gluster.org/pipermail/gluster-users/2011-February/006599.html I guess I have confused you with my last e-mail, but that was not intentionable. Best Regards, Strahil NikolovOn Apr 17, 2019 17:13, adrianquintero(a)gmail.com wrote: > > Hi Strahil, > I had a 3 node Hyperconverged setup and added 3 new nodes to the cluster for a total of 6 servers. I am now taking advantage of more compute power, however the gluster storage part is what gets me. > > Current Hyperconverged setup: > - host1.mydomain.com > Bricks: > engine > data1 > vmstore1 > - host2.mydomain.com > Bricks: > engine > data1 > vmstore1 > - host3.mydomain.com > Bricks: > engine > data1 > vmstore1 > > - host4.mydomain.com > Bricks: > > - host5.mydomain.com > Bricks: > > - host6.mydomain.com > Bricks: > > > As you can see from the above, the original first 3 servers are the only ones that contain the gluster storage bricks, so storage redundancy is not set across all 6 nodes. I think it is a lack of understanding from my end on how ovirt and gluster integrate with one another so have a few questions: > > How would I go about achieving storage redundancy across all nodes? > Do I need to configure gluster volumes manually through the OS CLI? > If I configure the fail storage scenario manually will oVirt know about it? > > Again I know that the bricks must be added in sets of 3 and per the first 3 nodes my gluster setup looks like this (all done by hyperconverged seup in ovirt): > engine volume: host1:brick1, host2:brick1, host3:brick1 > data1 volume: host1:brick2, host2:brick2, host3:brick2 > vmstore1 volume: host1:brick3, host2:brick3, host3:brick3 > > So after adding the 3 new servers I dont know if I need to do something similar to the example in https://medium.com/@tumballi/scale-your-gluster-cluster-1-node-at-a-time-62…, if I do a similar change will oVirt know about it? will it be able to handle it as hyperconverged? > > As I mentioned before I normally see 3 node hyperconverged setup examples with gluster but have not found one for 6, 9 or 12 node cluster. > > Thanks again. > _______________________________________________ > 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/U5T7TCSP4HFB2…

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Ovirt Host Replacement/Rebuild
by Jim Kusznir 18 Apr '19

18 Apr '19

Hi all: I had an unplanned power outage (generator failed to start, power failure lasted 3 min longer than UPS batteries). One node didn't survive the unplanned power outage. By that, I mean it kernel panic's on boot, and I haven't been able to capture the KP or the first part of it (just the end), and so I don't truely know what the root cause is. I have validated the hardware is just fine, so its got to be an OS corruption. Based on this, I was thinking that perhaps the easiest way to recover would simply be to delete the host from the cluster, reformat and reinstall this host, and then add it back to the cluster as a new host. Is this in fact a good idea? Are there any references to how to do this (the detailed steps so I don't mess it up)? My cluster is (was) a 3 node hyperconverged cluster with gluster used for the management node. I also have a gluster share for VMs, but I use an NFS share from a NAS for that (which I will ask about in another post). Thanks for the help! --Jim

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