September 2020 - Users - oVirt List Archives

Upgrading self-Hosted engine from 4.3 to oVirt 4.4
by Adam Xu 22 Sep '20

22 Sep '20

Hi ovirt I just try to upgrade a self-Hosted engine from 4.3.10 to 4.4.1.4. I followed the step in the document: https://www.ovirt.org/documentation/upgrade_guide/#SHE_Upgrading_from_4-3 the old 4.3 env has a FC storage as engine storage domain and I have created a new FC storage vv for the new storage domain to be used in the next steps. I backup the old 4.3 env and prepare a total new host to restore the env. in charter 4.4 step 8, it said: "During the deployment you need to provide a new storage domain. The deployment script renames the 4.3 storage domain and retains its data." it does rename the old storage domain. but it didn't let me choose a new storage domain during the deployment. So the new enigne just deployed in the new host's local storage and can not move to the FC storage domain. Can anyone tell me what the problem is? Thanks -- Adam Xu

2 13

AAA Extension mapping could not be found
by dominique.deschenes＠gcgenicom.com 21 Sep '20

21 Sep '20

I tried to use AAA mapping. but I have this message Sep 21, 2020 2:12:05 PM org.ovirt.engine.exttool.aaa.AAAServiceImpl run INFO: Iteration: 0 Sep 21, 2020 2:12:05 PM org.ovirt.engine.exttool.core.ExtensionsToolExecutor main SEVERE: Extension mapping could not be found Sep 21, 2020 2:12:05 PM org.ovirt.engine.exttool.core.ExtensionsToolExecutor main FINE: Exception: org.ovirt.engine.core.extensions.mgr.ConfigurationException: Extension mapping could not be found at org.ovirt.engine.core.extensions-manager//org.ovirt.engine.core.extensions.mgr.ExtensionsManager.getExtensionByName(ExtensionsManager.java:286) at org.ovirt.engine.core.extensions-tool//org.ovirt.engine.exttool.aaa.AAAServiceImpl$AAAProfile.<init>(AAAServiceImpl.java:846) at org.ovirt.engine.core.extensions-tool//org.ovirt.engine.exttool.aaa.AAAServiceImpl$Action.lambda$static$3(AAAServiceImpl.java:154) at org.ovirt.engine.core.extensions-tool//org.ovirt.engine.exttool.aaa.AAAServiceImpl$Action.execute(AAAServiceImpl.java:417) at org.ovirt.engine.core.extensions-tool//org.ovirt.engine.exttool.aaa.AAAServiceImpl.run(AAAServiceImpl.java:686) at org.ovirt.engine.core.extensions-tool//org.ovirt.engine.exttool.core.ExtensionsToolExecutor.main(ExtensionsToolExecutor.java:121) at org.jboss.modules.Module.run(Module.java:352) at org.jboss.modules.Module.run(Module.java:320) at org.jboss.modules.Main.main(Main.java:593) it's like it can't find for my mapping.properties file I followed the Howto on this page. https://www.ovirt.org/develop/release-management/features/infra/aaa_faq.html Here my config : tail /etc/ovirt-engine/extensions.d/local.lan-authn.properties ovirt.engine.aaa.authn.authz.plugin ovirt.engine.extension.name = local.lan-authn ovirt.engine.extension.bindings.method = jbossmodule ovirt.engine.extension.binding.jbossmodule.module = org.ovirt.engine.extension.aaa.ldap ovirt.engine.extension.binding.jbossmodule.class = org.ovirt.engine.extension.aaa.ldap.AuthnExtension ovirt.engine.extension.provides = org.ovirt.engine.api.extensions.aaa.Authn ovirt.engine.aaa.authn.profile.name = local.lan ovirt.engine.aaa.authn.authz.plugin = local.lan ovirt.engine.aaa.authn.mapping.plugin = mapping config.profile.file.1 = ../aaa/local.lan.properties tail /etc/ovirt-engine/extensions.d/mapping.properties ovirt.engine.extension.name = mapping ovirt.engine.extension.bindings.method = jbossmodule ovirt.engine.extension.binding.jbossmodule.module = org.ovirt.engine-extensions.aaa.misc ovirt.engine.extension.binding.jbossmodule.class = org.ovirt.engineextensions.aaa.misc.mapping.MappingExtension ovirt.engine.extension.provides = org.ovirt.engine.api.extensions.aaa.Mapping config.mapUser.type = regex config.mapUser.regex.pattern = ^(?<user>[^@]*)$ config.mapUser.regex.replacement = ${user}(a)domain.com config.mapUser.regex.mustMatch = false

2 1

New install
by info＠worldhostess.com 21 Sep '20

21 Sep '20

I have an issue with new installation. The server name is changing all the time and it keep disconnecting me. Plus it is impossible to log in as admin. The install went through without any issues, but it seems something is wrong. Server: engine01.xxxx.com Log in with your server user account. Server: node01.xxxx.com Log in with your server user account.

1 0

i cannot access to ovirt-engine with this error"sun.security.validator.validatorexception: pkix path validation failed: java.security.cert.certpathvalidatorexception: timestamp check failed
by momokch＠yahoo.com.hk 21 Sep '20

21 Sep '20

hello everyone, I apologize for asking what is probably a very basic question. when i login to my ovirt-engine webpage, the page show "sun.security.validator.validatorexception: pkix path validation failed: java.security.cert.certpathvalidatorexception: timestamp check failed" does anyone face it before and how to solve it the site is normal before which error message is just show near a month Yours Sincerely, school it

3 3

routing policy problem in ovirt 4.4
by g.vasilopoulos＠uoc.gr 19 Sep '20

19 Sep '20

Hello I created a cluster of ovirt 4.4 with 5 servers, I have a diferent gateway, ovirtmgmt and display network. In 4.4 routing is managed from network manager. Network manager seems to "forget" and recreate the route each time. So I cannot connect to the virtual machines console unless I run a ping for about a minute on the display network ip of the hypervisor, so network manager "wakes up" and "recreates" the route. I use this work around but it is not something that a user can do. What is the proper way to do this ? Thank you

3 3

OVirt HCI Setup Wizard - Drive specification Ignored
by Jeremey Wise 19 Sep '20

19 Sep '20

Greetings: 3 x servers each server has 1 x 512GB ssd 2 x 1TB SSD JBOD Goal: use HCI disk setup wizard to deploy initial structure Each server has disk scanning in as different /dev/sd# and so trying to use more clear /dev/mapper/<disk ID> As such I set this per table below: # Select each server and set each drive <<<<<<<<<<Double Check drive device ID as they do NOT match up per host # I transitioned to /dev/mapper object to avoid unclearness of /dev/sd# thor /dev/sdc /dev/mapper/Samsung_SSD_850_PRO_512GB_S250NXAGA15787L odin /dev/sdb /dev/mapper/Micron_1100_MTFDDAV512TBN_17401F699137 medusa /dev/sdb /dev/mapper/SAMSUNG_SSD_PM851_mSATA_512GB_S1EWNYAF609306 # Note that drives need to be completely clear of any partition or file system [root@thor /]# gdisk /dev/sdc GPT fdisk (gdisk) version 1.0.3 Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Command (? for help): x Expert command (? for help): z About to wipe out GPT on /dev/sdc. Proceed? (Y/N): y GPT data structures destroyed! You may now partition the disk using fdisk or other utilities. Blank out MBR? (Y/N): y [image: image.png] [image: image.png] But deployment fails with Error: <snip> TASK [gluster.infra/roles/backend_setup : Filter none-existing devices] ******** task path: /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/get_vg_groupings.yml:38 ok: [thorst.penguinpages.local] => {"ansible_facts": {"gluster_volumes_by_groupname": {}}, "changed": false} ok: [odinst.penguinpages.local] => {"ansible_facts": {"gluster_volumes_by_groupname": {}}, "changed": false} ok: [medusast.penguinpages.local] => {"ansible_facts": {"gluster_volumes_by_groupname": {}}, "changed": false} TASK [gluster.infra/roles/backend_setup : Make sure thick pvs exists in volume group] *** task path: /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/thick_lv_create.yml:37 TASK [gluster.infra/roles/backend_setup : update LVM fact's] ******************* task path: /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/thick_lv_create.yml:83 skipping: [thorst.penguinpages.local] => {"changed": false, "skip_reason": "Conditional result was False"} skipping: [odinst.penguinpages.local] => {"changed": false, "skip_reason": "Conditional result was False"} skipping: [medusast.penguinpages.local] => {"changed": false, "skip_reason": "Conditional result was False"} TASK [gluster.infra/roles/backend_setup : Create thick logical volume] ********* task path: /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/thick_lv_create.yml:90 failed: [medusast.penguinpages.local] (item={'vgname': ' gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L', 'lvname': 'gluster_lv_engine', 'size': '1000G'}) => {"ansible_index_var": "index", "ansible_loop_var": "item", "changed": false, "err": " Volume group \"gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L\" not found.\n Cannot process volume group gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L\n", "index": 0, "item": {"lvname": "gluster_lv_engine", "size": "1000G", "vgname": "gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L"}, "msg": "Volume group gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L does not exist.", "rc": 5} changed: [thorst.penguinpages.local] => (item={'vgname': ' gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L', 'lvname': 'gluster_lv_engine', 'size': '1000G'}) => {"ansible_index_var": "index", "ansible_loop_var": "item", "changed": true, "index": 0, "item": {"lvname": "gluster_lv_engine", "size": "1000G", "vgname": "gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L"}, "msg": ""} failed: [odinst.penguinpages.local] (item={'vgname': 'gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L', 'lvname': 'gluster_lv_engine', 'size': '1000G'}) => {"ansible_index_var": "index", "ansible_loop_var": "item", "changed": false, "err": " Volume group \"gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L\" not found.\n Cannot process volume group gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L\n", "index": 0, "item": {"lvname": "gluster_lv_engine", "size": "1000G", "vgname": "gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L"}, "msg": "Volume group gluster_vg_Samsung_SSD_850_PRO_512GB_S250NXAGA15787L does not exist.", "rc": 5} NO MORE HOSTS LEFT ************************************************************* NO MORE HOSTS LEFT ************************************************************* PLAY RECAP ********************************************************************* medusast.penguinpages.local : ok=23 changed=5 unreachable=0 failed=1 skipped=34 rescued=0 ignored=0 odinst.penguinpages.local : ok=23 changed=5 unreachable=0 failed=1 skipped=34 rescued=0 ignored=0 thorst.penguinpages.local : ok=30 changed=9 unreachable=0 failed=0 skipped=29 rescued=0 ignored=0 Please check /var/log/cockpit/ovirt-dashboard/gluster-deployment.log for more informations. ############ Why is oVirt ignoring when I set (and double check explicite device call for deployment? Attached is the ansible file it creates and then one I had to edit to correct what wizard should have built it as. -- p <jeremey.wise(a)gmail.com>enguinpages

3 5

New oVirt Install - Host Engine Deployment Fails
by mblanton＠vnet.net 18 Sep '20

18 Sep '20

I am attempting a new oVirt install. I have two nodes installed (with oVirt Node 4.4). I have NFS shared storage for the hosted engine. Both nodes are Dell quad core Xeon CPUs with 32GB of RAM. Both have been hypervisors before, XCP-NG and Proxmox. However I'm very interested to learn oVirt now. The hosted engine deployment (through cockpit) fails during the "Finish" stage. I do see the initial files created on the NFS storage. [ INFO ] TASK [ovirt.hosted_engine_setup : Convert CPU model name] [ ERROR ] fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute ''\n\nThe error appears to be in '/usr/share/ansible/roles/ovirt.hosted_engine_setup/tasks/create_target_vm/01_create_target_hosted_engine_vm.yml': line 105, column 16, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n# - debug: var=server_cpu_dict\n ^ here\n\nThere appears to be both 'k=v' shorthand syntax and YAML in this task. Only one syntax may be used.\n"} 2020-09-13 17:39:56,507+0000 ERROR ansible failed { "ansible_host": "localhost", "ansible_playbook": "/usr/share/ovirt-hosted-engine-setup/ansible/trigger_role.yml", "ansible_result": { "_ansible_no_log": false, "msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute '' \n\nThe error appears to be in '/usr/share/ansible/roles/ovirt.hosted_engine_setup/tasks/create_target_vm/01_create_targ et_hosted_engine_vm.yml': line 105, column 16, but may\nbe elsewhere in the file depending on the exact syntax problem.\ n\nThe offending line appears to be:\n\n# - debug: var=server_cpu_dict\n ^ here\n\nThere appears to be bo th 'k=v' shorthand syntax and YAML in this task. Only one syntax may be used.\n" }, "ansible_task": "Convert CPU model name", "ansible_type": "task", "status": "FAILED", "task_duration": 1 } I can see the host engine is created and running locally on the node. I can event SSH into the HostedEngineLocal instance. [root@ovirt-node01]# virsh --readonly list Id Name State ----------------------------------- 1 HostedEngineLocal running Looking at the "Convert CPU model name" task: https://github.com/oVirt/ovirt-ansible-hosted-engine-setup/blob/master/task… set_fact: cluster_cpu_model: "{{ server_cpu_dict[cluster_cpu.type] }}" server_cpu_dict is good, I can find that in the logs, cluster_cpu is undefined. But this is normal correct? The Cluster CPU type is "undefined" until the first host is added to the cluster. The error makes it seems that server_cpu_dict and not cluster_cpu.type is the problem. I'm not sure this is really the problem, but that is the only undefined variable I can find. Any advice or recommendation is appreciated -Thanks in advance

5 8

Re: Random hosts disconnects
by Artur Socha 18 Sep '20

18 Sep '20

Hi Anton, I am not sure if changing this value would fix the issue. Defaults are pretty high. For example vdsHeartbeatInSeconds=30seconds, vdsTimeout=180seconds, vdsConnectionTimeout=20seconds. Do you still have relevant logs from the affected hosts: * /var/logs/vdsm/vdsm.log* * /var/logs/vdsm/supervdsm.log* Please look for any jsonrpc errors ie. write/read errors or (connection) timeouts. Storage related warnings/errors might also be relevant. Plus system logs if possible: *journalctl -f /usr/share/vdsm/vdsmd* *journalctl -f /usr/sbin/libvirtd* In order to get system logs from particular time period please combine it with the following example using -S -U options: *journalctl -S "2020-01-12 07:00:00" -U "2020-01-12 07:15:00" * I haven't a clue what to look there for besides any warnings/errors or anything else that seems .... unusual. Artur On Thu, Sep 17, 2020 at 8:09 AM Anton Louw via Users <users(a)ovirt.org> wrote: > > > Hi Everybody, > > > > Did some digging around, and saw a few things regarding “vdsHeartbeatInSeconds” > > I had a look at the properties file located at /etc/ovirt-engine/engine-config/engine-config.properties, and do not see an entry for “vdsHeartbeatInSeconds.type=Integer”. > > Seeing as these data centers are geographically split, could the “vdsHeartbeatInSeconds” potentially be the issue? Is it safe to increase this value after I add “vdsHeartbeatInSeconds.type=Integer” into my engine-config.properties file? > > > > Thanks > > > > *Anton Louw* > *Cloud Engineer: Storage and Virtualization* at *Vox* > ------------------------------ > *T:* 087 805 0000 | *D:* 087 805 1572 > *M:* N/A > *E:* anton.louw(a)voxtelecom.co.za > *A:* Rutherford Estate, 1 Scott Street, Waverley, Johannesburg > www.vox.co.za > > [image: F] <https://www.facebook.com/voxtelecomZA> > [image: T] <https://www.twitter.com/voxtelecom> > [image: I] <https://www.instagram.com/voxtelecomza/> > [image: L] <https://www.linkedin.com/company/voxtelecom> > [image: Y] <https://www.youtube.com/user/VoxTelecom> > > *From:* Anton Louw via Users <users(a)ovirt.org> > *Sent:* 16 September 2020 09:01 > *To:* users(a)ovirt.org > *Subject:* [ovirt-users] Random hosts disconnects > > > > > > Hi All, > > > > I have a strange issue in my oVirt environment. I currently have a > standalone manager which is running in VMware. In my oVirt environment, I > have two Data Centers. The manager is currently sitting on the same subnet > as DC1. Randomly, hosts in DC2 will say “Not Responding” and then 2 seconds > later, the hosts will activate again. > > > > The strange thing is, when the manager was sitting on the same subnet as > DC2, hosts in DC1 will randomly say “Not Responding” > > > > I have tried going through the logs, but I cannot see anything out of the > ordinary regarding why the hosts would drop connection. I have attached the > engine.log for anybody that would like to do a spot check. > > > > Thanks > > > > *Anton Louw* > > *Cloud Engineer: Storage and Virtualization* at *Vox* > ------------------------------ > > *T:* 087 805 0000 | *D:* 087 805 1572 > *M:* N/A > *E:* anton.louw(a)voxtelecom.co.za > *A:* Rutherford Estate, 1 Scott Street, Waverley, Johannesburg > www.vox.co.za > > > > [image: F] <https://www.facebook.com/voxtelecomZA> > > > > [image: T] <https://www.twitter.com/voxtelecom> > > > > [image: I] <https://www.instagram.com/voxtelecomza> > > > > [image: L] <https://www.linkedin.com/company/voxtelecom> > > > > [image: Y] <https://www.youtube.com/user/VoxTelecom> > > > > > > [image: #VoxBrand] > <https://www.vox.co.za/fibre/fibre-to-the-home/?prod=HOME> > > > *Disclaimer* > > The contents of this email are confidential to the sender and the intended > recipient. Unless the contents are clearly and entirely of a personal > nature, they are subject to copyright in favour of the holding company of > the Vox group of companies. Any recipient who receives this email in error > should immediately report the error to the sender and permanently delete > this email from all storage devices. > > This email has been scanned for viruses and malware, and may have been > automatically archived by *Mimecast Ltd*, an innovator in Software as a > Service (SaaS) for business. Providing a *safer* and *more useful* place > for your human generated data. Specializing in; Security, archiving and > compliance. To find out more Click Here > <https://www.voxtelecom.co.za/security/mimecast/?prod=Enterprise>. > > > > _______________________________________________ > 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/EJL246IPBGEHI… > -- Artur Socha Senior Software Engineer, RHV Red Hat

2 1

Bad volume specification
by Facundo Garat 18 Sep '20

18 Sep '20

Hi all, I'm having some issues with one VM. The VM won't start and it's showing problems with the virtual disks so I started the VM without any disks and trying to hot adding the disk and that's fail too. The servers are connected thru FC, all the other VMs are working fine. Any ideas?. Thanks!! PS: The engine.log is showing this: 2020-09-15 20:10:37,926-03 INFO [org.ovirt.engine.core.bll.storage.disk.HotPlugDiskToVmCommand] (default task-168) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Lock Acquired to object 'EngineLock:{exclusiveLocks='[f5bd2e15-a1ab-4724-883a-988b4dc7985b=DISK]', sharedLocks='[71db02c2-df29-4552-8a7e-cb8bb429a2ac=VM]'}' 2020-09-15 20:10:38,082-03 INFO [org.ovirt.engine.core.bll.storage.disk.HotPlugDiskToVmCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Running command: HotPlugDiskToVmCommand internal: false. Entities affected : ID: 71db02c2-df29-4552-8a7e-cb8bb429a2ac Type: VMAction group CONFIGURE_VM_STORAGE with role type USER 2020-09-15 20:10:38,117-03 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] START, HotPlugDiskVDSCommand(HostName = nodo2, HotPlugDiskVDSParameters:{hostId='1c24c269-76c3-468d-a7ce-d0332beb7aef', vmId='71db02c2-df29-4552-8a7e-cb8bb429a2ac', diskId='f5bd2e15-a1ab-4724-883a-988b4dc7985b', addressMap='null'}), log id: f57ee9e 2020-09-15 20:10:38,125-03 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Disk hot-plug: <?xml version="1.0" encoding="UTF-8"?><hotplug> <devices> <disk snapshot="no" type="block" device="disk"> <target dev="vda" bus="virtio"/> <source dev="/rhev/data-center/mnt/blockSD/55327311-e47c-46b5-b168-258c5924757b/images/f5bd2e15-a1ab-4724-883a-988b4dc7985b/bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f"> <seclabel model="dac" type="none" relabel="no"/> </source> <driver name="qemu" io="native" type="qcow2" error_policy="stop" cache="none"/> <alias name="ua-f5bd2e15-a1ab-4724-883a-988b4dc7985b"/> <serial>f5bd2e15-a1ab-4724-883a-988b4dc7985b</serial> </disk> </devices> <metadata xmlns:ovirt-vm="http://ovirt.org/vm/1.0"> <ovirt-vm:vm> <ovirt-vm:device devtype="disk" name="vda"> <ovirt-vm:poolID>00000001-0001-0001-0001-000000000311</ovirt-vm:poolID> <ovirt-vm:volumeID>bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f</ovirt-vm:volumeID> <ovirt-vm:imageID>f5bd2e15-a1ab-4724-883a-988b4dc7985b</ovirt-vm:imageID> <ovirt-vm:domainID>55327311-e47c-46b5-b168-258c5924757b</ovirt-vm:domainID> </ovirt-vm:device> </ovirt-vm:vm> </metadata> </hotplug> 2020-09-15 20:10:38,289-03 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Failed in 'HotPlugDiskVDS' method 2020-09-15 20:10:38,295-03 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] EVENT_ID: VDS_BROKER_COMMAND_FAILURE(10,802), VDSM nodo2 command HotPlugDiskVDS failed: General Exception: ("Bad volume specification {'device': 'disk', 'type': 'disk', 'diskType': 'block', 'specParams': {}, 'alias': 'ua-f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'domainID': '55327311-e47c-46b5-b168-258c5924757b', 'imageID': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'poolID': '00000001-0001-0001-0001-000000000311', 'volumeID': 'bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'path': '/rhev/data-center/mnt/blockSD/55327311-e47c-46b5-b168-258c5924757b/images/f5bd2e15-a1ab-4724-883a-988b4dc7985b/bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'discard': False, 'format': 'cow', 'propagateErrors': 'off', 'cache': 'none', 'iface': 'virtio', 'name': 'vda', 'serial': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'index': 0}",) 2020-09-15 20:10:38,295-03 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Command 'org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand' return value 'StatusOnlyReturn [status=Status [code=100, message=General Exception: ("Bad volume specification {'device': 'disk', 'type': 'disk', 'diskType': 'block', 'specParams': {}, 'alias': 'ua-f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'domainID': '55327311-e47c-46b5-b168-258c5924757b', 'imageID': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'poolID': '00000001-0001-0001-0001-000000000311', 'volumeID': 'bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'path': '/rhev/data-center/mnt/blockSD/55327311-e47c-46b5-b168-258c5924757b/images/f5bd2e15-a1ab-4724-883a-988b4dc7985b/bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'discard': False, 'format': 'cow', 'propagateErrors': 'off', 'cache': 'none', 'iface': 'virtio', 'name': 'vda', 'serial': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'index': 0}",)]]' 2020-09-15 20:10:38,295-03 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] HostName = nodo2 2020-09-15 20:10:38,295-03 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Command 'HotPlugDiskVDSCommand(HostName = nodo2, HotPlugDiskVDSParameters:{hostId='1c24c269-76c3-468d-a7ce-d0332beb7aef', vmId='71db02c2-df29-4552-8a7e-cb8bb429a2ac', diskId='f5bd2e15-a1ab-4724-883a-988b4dc7985b', addressMap='null'})' execution failed: VDSGenericException: VDSErrorException: Failed to HotPlugDiskVDS, error = General Exception: ("Bad volume specification {'device': 'disk', 'type': 'disk', 'diskType': 'block', 'specParams': {}, 'alias': 'ua-f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'domainID': '55327311-e47c-46b5-b168-258c5924757b', 'imageID': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'poolID': '00000001-0001-0001-0001-000000000311', 'volumeID': 'bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'path': '/rhev/data-center/mnt/blockSD/55327311-e47c-46b5-b168-258c5924757b/images/f5bd2e15-a1ab-4724-883a-988b4dc7985b/bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'discard': False, 'format': 'cow', 'propagateErrors': 'off', 'cache': 'none', 'iface': 'virtio', 'name': 'vda', 'serial': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'index': 0}",), code = 100 2020-09-15 20:10:38,296-03 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HotPlugDiskVDSCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] FINISH, HotPlugDiskVDSCommand, return: , log id: f57ee9e 2020-09-15 20:10:38,296-03 ERROR [org.ovirt.engine.core.bll.storage.disk.HotPlugDiskToVmCommand] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] Command 'org.ovirt.engine.core.bll.storage.disk.HotPlugDiskToVmCommand' failed: EngineException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to HotPlugDiskVDS, error = General Exception: ("Bad volume specification {'device': 'disk', 'type': 'disk', 'diskType': 'block', 'specParams': {}, 'alias': 'ua-f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'domainID': '55327311-e47c-46b5-b168-258c5924757b', 'imageID': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'poolID': '00000001-0001-0001-0001-000000000311', 'volumeID': 'bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'path': '/rhev/data-center/mnt/blockSD/55327311-e47c-46b5-b168-258c5924757b/images/f5bd2e15-a1ab-4724-883a-988b4dc7985b/bd714f21-8eed-43ee-a2d4-3d2ef1ee4c3f', 'discard': False, 'format': 'cow', 'propagateErrors': 'off', 'cache': 'none', 'iface': 'virtio', 'name': 'vda', 'serial': 'f5bd2e15-a1ab-4724-883a-988b4dc7985b', 'index': 0}",), code = 100 (Failed with error GeneralException and code 100) 2020-09-15 20:10:38,307-03 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engine-Thread-36528) [dd72c8e8-cdbe-470f-8e32-b3d14b96f37a] EVENT_ID: USER_FAILED_HOTPLUG_DISK(2,001), Failed to plug disk owncloud_Disk0 to VM owncloud (User: admin@internal-authz).

4 9

Low Performance (KVM Vs VMware Hypervisor) When running multi-process application
by Rav Ya 17 Sep '20

17 Sep '20

Hello Everyone, Please advice. Any help will be highly appreciated. Thank you in advance. Test Setup: 1. oVirt Centos 7.8 Virtulization Host 2. Guest VM Centos 7.8 (Mutiqueue enabled 6 vCPUs with 6 Rx Tx Queues) 3. The vCPUs are configured for host pass through (Pinned CPU). The Guest VM runs the application in userspace. The Application consists of the parent process that reads packets in raw socket mode from the interface and forwards then to child processes (~vCPUs) via IPC (shared memory – pipes). *The performance (throughput / CPU utilization) that I get with KVM is half of what I get with VMware.* Any thoughts on the below observations? Any suggestions? - KVM Guest VMs degraded performance when running multi-process applications. - High FUTEX time (Seen on the Guest VM when passing traffic). - *High SY: *System CPU time spent in kernel space (Seen on both Hypervisor and the Guest VMs only when running my application.) -Rav Ya

3 6

[ANN] oVirt 4.4.3 First Release Candidate is now available for testing
by Lev Veyde 17 Sep '20

17 Sep '20

oVirt 4.4.3 First Release Candidate is now available for testing The oVirt Project is pleased to announce the availability of oVirt 4.4.3 First Release Candidate for testing, as of September 17th, 2020. This update is the third in a series of stabilization updates to the 4.4 series. Important notes before you try it Please note this is a pre-release build. The oVirt Project makes no guarantees as to its suitability or usefulness. This pre-release must not be used in production. Installation instructions For installation instructions and additional information please refer to: https://ovirt.org/documentation/ This release is available now on x86_64 architecture for: * Red Hat Enterprise Linux 8.2 or newer * CentOS Linux (or similar) 8.2 or newer This release supports Hypervisor Hosts on x86_64 and ppc64le architectures for: * Red Hat Enterprise Linux 8.2 or newer * CentOS Linux (or similar) 8.2 or newer * oVirt Node 4.4 based on CentOS Linux 8.2 (available for x86_64 only) See the release notes [1] for installation instructions and a list of new features and bugs fixed. Notes: - oVirt Appliance is already available for CentOS Linux 8 - oVirt Node NG will be available soon for CentOS Linux 8 Additional Resources: * Read more about the oVirt 4.4.3 release highlights: http://www.ovirt.org/release/4.4.3/ * Get more oVirt project updates on Twitter: https://twitter.com/ovirt * Check out the latest project news on the oVirt blog: http://www.ovirt.org/blog/ [1] http://www.ovirt.org/release/4.4.3/ [2] http://resources.ovirt.org/pub/ovirt-4.4-pre/iso/ -- Lev Veyde Senior Software Engineer, RHCE | RHCVA | MCITP Red Hat Israel <https://www.redhat.com> lev(a)redhat.com | lveyde(a)redhat.com <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>

1 0

UPN suffix and my SAM account do not have the sames domains
by dominique.deschenes＠gcgenicom.com 17 Sep '20

17 Sep '20

I have a SSO authentication question. In my Active Directory, my UPN suffix login and my SAM account do not have the sames domains. Example : UPN : dominique.test(a)abc.com Sam account : domtest(a)local.lan On the VM portal, I am able to connect with dominique.test(a)abc.com but not with domtest(a)local.lan (I have the following message:server_error: Cannot resolve principal 'domtest(a)local.lan' If I connect to the VM PORTAL with dominique.test(a)abc.com, when I click on "RDP Console" to get the link, the login of the RDP is dominique.test(a)local.lan. So I have to manually change the login to dominique.test(a)abc.com. Is it possible to use the Sam account domtes(a)local.lan instead of the UPN ? if not, is it possible to adjust the consol.rdp configuration and include the domain abc.com instead of local.lan ? In research I found this, but I don't have access. How to authenticate with Active directory when UPN suffix and Forest Name are different using AAA LDAP extension - Red Hat C https://access.redhat.com/solutions/2332561 Thank you

1 0

Re: Random hosts disconnects
by Anton Louw 17 Sep '20

17 Sep '20

Hi Everybody, Did some digging around, and saw a few things regarding “vdsHeartbeatInSeconds” I had a look at the properties file located at /etc/ovirt-engine/engine-config/engine-config.properties, and do not see an entry for “vdsHeartbeatInSeconds.type=Integer”. Seeing as these data centers are geographically split, could the “vdsHeartbeatInSeconds” potentially be the issue? Is it safe to increase this value after I add “vdsHeartbeatInSeconds.type=Integer” into my engine-config.properties file? Thanks Anton Louw Cloud Engineer: Storage and Virtualization ______________________________________ D: 087 805 1572 | M: N/A A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg anton.louw(a)voxtelecom.co.za www.vox.co.za From: Anton Louw via Users <users(a)ovirt.org> Sent: 16 September 2020 09:01 To: users(a)ovirt.org Subject: [ovirt-users] Random hosts disconnects Hi All, I have a strange issue in my oVirt environment. I currently have a standalone manager which is running in VMware. In my oVirt environment, I have two Data Centers. The manager is currently sitting on the same subnet as DC1. Randomly, hosts in DC2 will say “Not Responding” and then 2 seconds later, the hosts will activate again. The strange thing is, when the manager was sitting on the same subnet as DC2, hosts in DC1 will randomly say “Not Responding” I have tried going through the logs, but I cannot see anything out of the ordinary regarding why the hosts would drop connection. I have attached the engine.log for anybody that would like to do a spot check. Thanks Anton Louw Cloud Engineer: Storage and Virtualization at Vox ________________________________ T: 087 805 0000 | D: 087 805 1572 M: N/A E: anton.louw(a)voxtelecom.co.za<mailto:anton.louw@voxtelecom.co.za> A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg www.vox.co.za<http://www.vox.co.za> [F]<https://www.facebook.com/voxtelecomZA> [T]<https://www.twitter.com/voxtelecom> [I]<https://www.instagram.com/voxtelecomza> [L]<https://www.linkedin.com/company/voxtelecom> [Y]<https://www.youtube.com/user/VoxTelecom> [#VoxBrand]<https://www.vox.co.za/fibre/fibre-to-the-home/?prod=HOME> Disclaimer The contents of this email are confidential to the sender and the intended recipient. Unless the contents are clearly and entirely of a personal nature, they are subject to copyright in favour of the holding company of the Vox group of companies. Any recipient who receives this email in error should immediately report the error to the sender and permanently delete this email from all storage devices. This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here<https://www.voxtelecom.co.za/security/mimecast/?prod=Enterprise>.

1 0

Ovirt legacy migration policy is missing
by ovirtand-cnj342＠yahoo.com 16 Sep '20

16 Sep '20

Hello, We have many cases of failed migrations, and reducing the load on the respective VMs made migration possible. Using "Suspend workload when needed" did not help either with the migrations, which only worked when stopping services on the VMs, thus reducing load. I was therefore trying to tweak the migration downtime setting. The suggested way of doing this is by using the Legacy migration policy. That being said, I am unable to find the Legacy migration policy in the VM Host tab, nor in the cluster's "Migration policy" tab. I cannot find any mention of it being left out of our current version (4.3.6.1) - moreover, the setting "Use custom migration downtime" (only available when using the Legacy migration policy) does exist in the interface - but I cannot find the Legacy policy itself. The only policies present are Minimal downtime (default for cluster), Post-copy migration and Suspend workload when needed. Is there a way to make the Legacy migration policy available if it's missing? Thanks! Best regards, Andy PS. Setting DefaultMaximumMigrationDowntime=20000 as default did not have any effect, presumably because the system uses one of the 3 pre-defined policies and ignores the "default"

1 0

Low Performance (KVM Vs VMware Hypervisor) When running multi-process application
by Ravin Ya 16 Sep '20

16 Sep '20

Hello Everyone, Please advice. Any help will be highly appreciated. Thank you in advance. Test Setup: oVirt Centos 7.8 Virtulization Host Guest VM Centos 7.8 (Mutiqueue enabled 6 vCPUs with 6 Rx Tx Queues) The vCPUs are configured for host pass through (Pinned CPU). The Guest VM runs the application in userspace. The Application consists of the parent process that reads packets in raw socket mode from the interface and forwards then to child processes (~vCPUs) via IPC (shared memory – pipes). The performance (throughput / CPU utilization) that I get with KVM is half of what I get with VMware. Any thoughts on the below observations? Any suggestions? KVM Guest VMs degraded performance when running multi-process applications. High FUTEX time (Seen on the Guest VM when passing traffic). High SY: System CPU time spent in kernel space (Seen on both Hypervisor and the Guest VMs only when running my application.) -Rav Ya

2 1

cpu QoS doesn't work
by pub.virtualization＠gmail.com 16 Sep '20

16 Sep '20

Hello, I set cpu QoS as 10 and applied it to VM on oVirt 4.2, but it doesn't seem to work. compared to VM without QoS, there wasn't any difference in cpu usage. Also, there wasn't any <period>...</period> or <quota>...</quota> field related to QoS in libvirt file. is it right result?? Thanks,

2 1

Unable to create a node in oVirt 4.0
by Rodrigo G. López 16 Sep '20

16 Sep '20

Hi there, We are trying to setup a node in the same machine where we are running the engine, and noticed that the vdsmd service fails because the supervdsmd daemon can't authenticate against libvirtd afaict. The error is the following on supervdsmd: daemonAdapter[17803]: libvirt: XML-RPC error : authentication failed: authentication failed ... and in libvirtd: Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.410+0000: 17775: error : virNetSocketReadWire:1806 : End of file while reading data: Input/output error Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.612+0000: 17776: error : virNetSASLSessionListMechanisms:393 : internal error: cannot list SASL mechanisms -4 (SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757) Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.612+0000: 17776: error : remoteDispatchAuthSaslInit:3440 : authentication failed: authentication failed Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.612+0000: 17775: error : virNetSocketReadWire:1806 : End of file while reading data: Input/output error Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.814+0000: 17778: error : virNetSASLSessionListMechanisms:393 : internal error: cannot list SASL mechanisms -4 (SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757) Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.814+0000: 17778: error : remoteDispatchAuthSaslInit:3440 : authentication failed: authentication failed Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15 07:34:18.815+0000: 17775: error : virNetSocketReadWire:1806 : End of file while reading data: Input/output error Sep 15 03:34:19 ovirt-test libvirtd[17775]: 2020-09-15 07:34:19.017+0000: 17780: error : virNetSASLSessionListMechanisms:393 : internal error: cannot list SASL mechanisms -4 (SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757) Sep 15 03:34:19 ovirt-test libvirtd[17775]: 2020-09-15 07:34:19.017+0000: 17780: error : remoteDispatchAuthSaslInit:3440 : authentication failed: authentication failed Sep 15 03:34:19 ovirt-test libvirtd[17775]: 2020-09-15 07:34:19.020+0000: 17775: error : virNetSocketReadWire:1806 : End of file while reading data: Input/output error Is there any way to work around that? We have working infra on top of 4.0 in CentOS 7 systems, and we would like to replicate the exact same environment for availability purposes, in case anything bad happened. Best regards, -rodri

3 4

Removal of deprecated init-scripts (network-scripts)
by Ales Musil 16 Sep '20

16 Sep '20

Hello, network-scripts for host networking were deprecated since oVirt 4.4. It will be removed completely in the 4.4.3 release. There is no action required for setups that did not change the configuration to use network-scripts backend (net_nmstate_enabled = false). Users that did disable nmstate should redeploy all affected hosts before 4.4.3. Also can you please tell us what was the reason to use network-scripts, if that is the case? Thank you. Best regards, Ales Musil -- Ales Musil Software Engineer - RHV Network Red Hat EMEA <https://www.redhat.com> amusil(a)redhat.com IM: amusil <https://red.ht/sig>

1 0

Random hosts disconnects
by Anton Louw 16 Sep '20

16 Sep '20

Hi All, I have a strange issue in my oVirt environment. I currently have a standalone manager which is running in VMware. In my oVirt environment, I have two Data Centers. The manager is currently sitting on the same subnet as DC1. Randomly, hosts in DC2 will say "Not Responding" and then 2 seconds later, the hosts will activate again. The strange thing is, when the manager was sitting on the same subnet as DC2, hosts in DC1 will randomly say "Not Responding" I have tried going through the logs, but I cannot see anything out of the ordinary regarding why the hosts would drop connection. I have attached the engine.log for anybody that would like to do a spot check. Thanks Anton Louw Cloud Engineer: Storage and Virtualization ______________________________________ D: 087 805 1572 | M: N/A A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg anton.louw(a)voxtelecom.co.za www.vox.co.za

1 0

Enable a cluster node to run the hosted engine
by rap＠isogmbh.de 16 Sep '20

16 Sep '20

Hi there, currently my team is evaluating oVirt and we're also testing several fail scenarios, backup and so on. One scenario was: - hyperconverged oVirt cluster with 3 nodes - self-hosted engine - simulate the break down of one of the nodes by power off - to replace it make a clean install of a new node and reintegrate it in the cluster Actually everything worked out fine. The new installed node and related bricks (vmstore, data, engine) were added to the existing Gluster storage and it was added to the oVirt cluster (as host). But there's one remaining problem: The new host doesn't have the grey crown, which means it's unable to run the hosted engine. How can I achieve that? I also found out that the ovirt-ha-agent and ovirt-ha-broker isn't started/enabled on that node. Reason is that the /etc/ovirt-hosted-engine/hosted-engine.conf doesn't exist. I guess this is not only a problem concerning the hosted engine, but also for HA VM's. Thank you for any advice and greetings, Marcus

3 7

Random hosts disconnects
by anton.louw＠voxtelecom.co.za 16 Sep '20

16 Sep '20

Hi All, I have a strange issue in my oVirt environment. I currently have a standalone manager which is running in VMware. In my oVirt environment, I have two Data Centers. The manager is currently sitting on the same subnet as DC1. Randomly, hosts in DC2 will say “Not Responding” and then 2 seconds later, the hosts will activate again. The strange thing is, when the manager was sitting on the same subnet as DC2, hosts in DC1 will randomly say “Not Responding” I have tried going through the logs, but I cannot see anything out of the ordinary regarding why the hosts would drop connection. I have attached the engine.log for anybody that would like to do a spot check. Thanks

1 0

Disconnected Server has closed the connection.
by info＠worldhostess.com 15 Sep '20

15 Sep '20

It seems that the installation is all done, but I have a problem. it takes very long to open the web pages, plus it disconnect all the time. it is impossible to do anything. I can ping the hostname as I set up a sub-domain for it. to be honest, I am new to this and it took me days to get to this point. I think there are some issues with my network settings. if there are any oVirt experts that can check my installation and give me advice about how to improve it, it will be greatly appreciated. I have done an "Installing oVirt as a self-hosted engine using the Cockpit web interface"

3 3

Gluster quorum issue on 3-node HCI with extra 5-nodes as compute and storage nodes
by thomas＠hoberg.net 15 Sep '20

15 Sep '20

Yes, I've also posted this on the Gluster Slack. But I am using Gluster mostly because it's part of oVirt HCI, so don't just send me away, please! Problem: GlusterD refusing to start due to quorum issues for volumes where it isn’t contributing any brick (I've had this before on a different farm, but there it was transitory. Now I have it in a more observable manner, that's why I open a new topic) In a test farm with recycled servers, I started running Gluster via oVirt 3node-HCI, because I got 3 machines originally. They were set up as group A in a 2:1 (replica:arbiter) oVirt HCI setup with 'engine', 'vmstore' and 'data' volumes, one brick on each node. I then got another five machines with hardware specs that were rather different to group A, so I set those up as group B to mostly act as compute nodes, but also to provide extra storage, mostly to be used externally as GlusterFS shares. It took a bit of fiddling with Ansible but I got these 5 nodes to serve two more Gluster volumes 'tape' and 'scratch' using dispersed bricks (4 disperse:1 redundancy), RAID5 in my mind. The two groups are in one Gluster, not because they serve bricks to the same volumes, but because oVirt doesn't like nodes to be in different Glusters (or actually, to already be in a Gluster when you add them as host node). But the two groups provide bricks to distinct volumes, there is no overlap. After setup things have been running fine for weeks, but now I needed to restart a machine from group B, which has ‘tape’ and ‘scratch’ bricks, but none from original oVirt ‘engine’, ‘vmstore’ and ‘data’ in group A. Yet the gluster daemon refuses to start, citing a loss of quorum for these three volumes, even if it has no bricks in them… which makes no sense to me. I am afraid the source of the issue is concept issues: I clearly don't really understand some design assumptions of Gluster. And I'm afraid the design assumptions of Gluster and of oVirt (even with HCI), are not as related as one might assume from the marketing materials on the oVirt home-page. But most of all I'd like to know: How do I fix this now? I can't heal 'tape' and 'scratch', which are growing ever more apart while the glusterd on this machine in group B refuses to come online for lack of a quorum on volumes where it is not contributing bricks.

3 2

What is the purpose of memory deflation in oVirt memory ballooning?
by pub.virtualization＠gmail.com 15 Sep '20

15 Sep '20

Hi, guys Why does momd(ballooning manager in oVirt) explicitly deflate the balloon when host gets plenty of memory? as far as I know, momd is supporting memory ballooning with setMemory API to inflate/deflate the balloon in guest and I've just checked the memory change in the guest after inflating the balloon. as expected, memory(total, free, available) in the guest was reduced just after inflating the balloon, but it was "automatically" restored to its initial memory after a few seconds. So, here I'm wondering why deflation is additionally required even though it can be restored automatically just after seconds. Thanks.

1 1

Posts not updating on lists.ovirt.org web site since September 10th?
by thomas＠hoberg.net 15 Sep '20

15 Sep '20

I can see new posts coming in via e-mail, but updates on the web sites have stopped and posts don't disappear?

2 1