December 2021 - Users - oVirt List Archives

NFS Synology NAS (DSM 7)
by Maton, Brett 08 Mar '22

08 Mar '22

Hi List, I can't get oVirt 4.4.8.5-1.el8 (running on oVirt Node hosts) to connect to an NFS share on a Synology NAS. I gave up trying to get the hosted engine deployed and put that on an iscsi volume instead... The directory being exported from NAS is owned by vdsm / kvm (36:36) perms I've tried: 0750 0755 0777 Tried auto / v3 / v4_0 As others have mentioned regarding NFS, if I connect manually from the host with mount nas.mydomain.com:/volume1/ov_nas It connects and works just fine. If I try to add the share as a domain in oVirt I get Operation Cancelled Error while executing action Add Storage Connection: Permission settings on the specified path do not allow access to the storage. Verify permission settings on the specified storage path. When tailing /var/log/messages on When tailing /var/log/messages on the oVirt host, I see this message appear (I changed the domain name for this post so the dots might be transcoded in reality): Aug 27 17:36:07 ov001 systemd[1]: rhev-data\x2dcenter-mnt-nas.mydomain.com:_volume1_ov__nas.mount: Succeeded. The NAS is running the 'new' DSM 7, /etc/exports looks like this: /volume1/ov_nas x.x.x.x(rw,async,no_root_squash,anonuid=36,anongid=36) (reloaded with exportfs -ra) Any suggestions appreciated. Regards, Brett

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VM hanging at sustained high throughput
by David Johnson 07 Mar '22

07 Mar '22

Hi ovirt gurus, This is an interesting issue, one I never expected to have. When I push high volumes of writes to my NAS, I will cause VM's to go into a paused state. I'm looking at this from a number of angles, including upgrades on the NAS appliance. I can reproduce this problem at will running a centos 7.9 VM on Ovirt 4.5. *Questions:* 1. Is my analysis of the failure (below) reasonable/correct? 2. What am I looking for to validate this? 3. Is there a configuration that I can set to make it a little more robust while I acquire the hardware to improve the NAS? *Reproduction:* Standard test of file write speed: [root@cen-79-pgsql-01 ~]# dd if=/dev/zero of=./test bs=512k count=4096 oflag=direct 4096+0 records in 4096+0 records out 2147483648 bytes (2.1 GB) copied, 1.68431 s, 1.3 GB/s Give it more data [root@cen-79-pgsql-01 ~]# dd if=/dev/zero of=./test bs=512k count=12228 oflag=direct 12228+0 records in 12228+0 records out 6410993664 bytes (6.4 GB) copied, 7.22078 s, 888 MB/s The odds are about 50/50 that 6 GB will kill the VM, but 100% when I hit 8 GB. *Analysis:* What I think appears to be happening is that the intent cache on the NAS is on an SSD, and my VM's are pushing data about three times as fast as the SSD can handle. When the SSD gets queued up beyond a certain point, the NAS (which places reliability over speed) says "Whoah Nellie!", and the VM chokes. *David Johnson*

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Unable to migrate VMs to a newly upgraded Ovirt node host
by Giulio Casella 25 Feb '22

25 Feb '22

Hi guys, I just faced a problem after updating a host. I cannot migrate VM to updated host. Here's the error I see trying to migrate a VM to that host. Dec 16 10:13:11 host01.ovn.di.unimi.it systemd[1]: Starting Network Manager Script Dispatcher Service... Dec 16 10:13:11 host01.ovn.di.unimi.it libvirtd[5667]: Unable to read from monitor: Connection reset by peer Dec 16 10:13:11 host01.ovn.di.unimi.it libvirtd[5667]: internal error: qemu unexpectedly closed the monitor: 2021-12-16T10:13:00.447480Z qemu-kvm: -numa node,nodeid=0,cpus=0-15,mem=8192: warning: Parameter -numa node,mem is deprecated, use -numa node,memdev instead 2021-12-16T10:13:11.158057Z qemu-kvm: Failed to load pckbd:kbd 2021-12-16T10:13:11.158114Z qemu-kvm: error while loading state for instance 0x0 of device 'pckbd' 2021-12-16T10:13:11.158744Z qemu-kvm: load of migration failed: No such file or directory Dec 16 10:13:11 host01.ovn.xx.xxxxx.it kvm[35663]: 0 guests now active Instead I can start VM on that host, and migrate away VM from that host. Rolling back to ovirt-node-ng-4.4.9.1-0.20211207.0+1 via host console restores full functionality. The affected version is ovirt-node-ng-4.4.9.3-0.20211215.0+1 (and also previous one, I don't remember precisely, it was another async release). Any ideas? TIA, gc

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Deploy ovirt-csi in the kubernetes cluster
by ssarang520＠gmail.com 10 Feb '22

10 Feb '22

Hi, I want to deploy ovirt-csi in the kubernetes cluster. But the guide only has how to deploy to openshift. How can I deploy the ovirt-csi in the kubernetes cluster? Is there any way to do that?

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Host needs to be reinstalled after configuring power management
by Andrew DeMaria 02 Feb '22

02 Feb '22

Hi, I am running ovirt 4.3 and have found the following action item immediately after configuring power management for a host: Host needs to be reinstalled as important configuration changes were applied on it. The thing is - I've just freshly installed this host and it seems strange that I need to reinstall it. Is there a better way to install a host and configure power management without having to reinstall it after? Thanks, Andrew

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Cinderlib RBD ceph template issues
by Sketch 01 Feb '22

01 Feb '22

This is on oVirt 4.4.8, engine on CS8, hosts on C8, cluster and DC are both set to 4.6. With a newly configured cinderlib/ceph RBD setup. I can create new VM images, and copy existing VM images, but I can't copy existing template images to RBD. When I do, I try, I get this error in cinderlib.log (see below), which sounds like the disk already exists there, but it definitely does not. This leaves me unable to create new VMs on RBD, only migrate existing VM disks. 2021-09-01 04:31:05,881 - cinder.volume.driver - INFO - Driver hasn't implemented _init_vendor_properties() 2021-09-01 04:31:05,882 - cinderlib-client - INFO - Creating volume '0e8b9aca-1eb1-4837-ac9e-cb3d8f4c1676', with size '500' GB [5c5d0a6b] 2021-09-01 04:31:05,943 - cinderlib-client - ERROR - Failure occurred when trying to run command 'create_volume': Entity '<class 'cinder.db.sqlalchemy.models.Volume'>' has no property 'glance_metadata' [5c5d0a6b] 2021-09-01 04:31:05,944 - cinder - CRITICAL - Unhandled error Traceback (most recent call last): File "/usr/lib/python3.6/site-packages/cinderlib/objects.py", line 455, in create self._raise_with_resource() File "/usr/lib/python3.6/site-packages/cinderlib/objects.py", line 222, in _raise_with_resource six.reraise(*exc_info) File "/usr/lib/python3.6/site-packages/six.py", line 703, in reraise raise value File "/usr/lib/python3.6/site-packages/cinderlib/objects.py", line 448, in create model_update = self.backend.driver.create_volume(self._ovo) File "/usr/lib/python3.6/site-packages/cinder/volume/drivers/rbd.py", line 986, in create_volume features=client.features) File "/usr/lib/python3.6/site-packages/eventlet/tpool.py", line 190, in doit result = proxy_call(self._autowrap, f, *args, **kwargs) File "/usr/lib/python3.6/site-packages/eventlet/tpool.py", line 148, in proxy_call rv = execute(f, *args, **kwargs) File "/usr/lib/python3.6/site-packages/eventlet/tpool.py", line 129, in execute six.reraise(c, e, tb) File "/usr/lib/python3.6/site-packages/six.py", line 703, in reraise raise value File "/usr/lib/python3.6/site-packages/eventlet/tpool.py", line 83, in tworker rv = meth(*args, **kwargs) File "rbd.pyx", line 629, in rbd.RBD.create rbd.ImageExists: [errno 17] RBD image already exists (error creating image) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/base.py", line 399, in _entity_descriptor return getattr(entity, key) AttributeError: type object 'Volume' has no attribute 'glance_metadata' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "./cinderlib-client.py", line 170, in main args.command(args) File "./cinderlib-client.py", line 208, in create_volume backend.create_volume(int(args.size), id=args.volume_id) File "/usr/lib/python3.6/site-packages/cinderlib/cinderlib.py", line 175, in create_volume vol.create() File "/usr/lib/python3.6/site-packages/cinderlib/objects.py", line 457, in create self.save() File "/usr/lib/python3.6/site-packages/cinderlib/objects.py", line 628, in save self.persistence.set_volume(self) File "/usr/lib/python3.6/site-packages/cinderlib/persistence/dbms.py", line 254, in set_volume self.db.volume_update(objects.CONTEXT, volume.id, changed) File "/usr/lib/python3.6/site-packages/cinder/db/sqlalchemy/api.py", line 236, in wrapper return f(*args, **kwargs) File "/usr/lib/python3.6/site-packages/cinder/db/sqlalchemy/api.py", line 184, in wrapper return f(*args, **kwargs) File "/usr/lib/python3.6/site-packages/cinder/db/sqlalchemy/api.py", line 2570, in volume_update result = query.filter_by(id=volume_id).update(values) File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/query.py", line 3818, in update update_op.exec_() File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1670, in exec_ self._do_pre_synchronize() File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1743, in _do_pre_synchronize self._additional_evaluators(evaluator_compiler) File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1912, in _additional_evaluators values = self._resolved_values_keys_as_propnames File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1831, in _resolved_values_keys_as_propnames for k, v in self._resolved_values: File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1818, in _resolved_values desc = _entity_descriptor(self.mapper, k) File "/usr/lib64/python3.6/site-packages/sqlalchemy/orm/base.py", line 402, in _entity_descriptor "Entity '%s' has no property '%s'" % (description, key) sqlalchemy.exc.InvalidRequestError: Entity '<class 'cinder.db.sqlalchemy.models.Volume'>' has no property 'glance_metadata' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "./cinderlib-client.py", line 390, in <module> sys.exit(main(sys.argv[1:])) File "./cinderlib-client.py", line 176, in main sys.stderr.write(traceback.format_exc(e)) File "/usr/lib64/python3.6/traceback.py", line 167, in format_exc return "".join(format_exception(*sys.exc_info(), limit=limit, chain=chain)) File "/usr/lib64/python3.6/traceback.py", line 121, in format_exception type(value), value, tb, limit=limit).format(chain=chain)) File "/usr/lib64/python3.6/traceback.py", line 498, in __init__ _seen=_seen) File "/usr/lib64/python3.6/traceback.py", line 498, in __init__ _seen=_seen) File "/usr/lib64/python3.6/traceback.py", line 509, in __init__ capture_locals=capture_locals) File "/usr/lib64/python3.6/traceback.py", line 338, in extract if limit >= 0: TypeError: '>=' not supported between instances of 'InvalidRequestError' and 'int'

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Import an exported VM using Ansible
by paolo＠airaldi.it 25 Jan '22

25 Jan '22

Hello everybody! I'm trying to automate a copy of a VM from one Datacenter to another using an Ansible.playbook. I'm able to: - Create a snapshot of the source VM - create a clone from the snapshot - remove the snapshot - attach an Export Domain - export the clone to the Export Domain - remove the clone - detach the Export domain from the source Datacenter and attach to the destination. Unfortunately I cannot find a module to: - import the VM from the Export Domain - delete the VM image from the Export Domain. Any hint on how to do that? Thanks in advance. Cheers. Paolo PS: if someone is interested I can share the playbook.

4 3

give cloud-init the VM name
by Luca Contessa 19 Jan '22

19 Jan '22

Hi list, I have an oVirt node 4.4.9 installation with hyperconverged structure, on which i've created a pool of Linux VM (CentOS Stream 8). I would like set as hostname the name of the VM + a static suffix appended at the end of the name (EXAMPLE: <VM name>.static.suffix ), is there a way to pass to cloud-init the name of the VM and do this via cloud-init? I've tried to look for something in oVirt and cloud-init documentation and found nothing. Thanks a lot to everybody for the help and have a nice day.

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did 4.3.9 reset bug https://bugzilla.redhat.com/show_bug.cgi?id=1590266
by kelley bryan 10 Jan '22

10 Jan '22

I am experiencing the error message in the ovirt-hosted-engine-setup-ansible-create_target_vm log {2020-05-06 14:15:30,024-0500 ERROR ansible failed {'status': 'FAILED', 'ansible_type': 'task', 'ansible_task': u"Fail if Engine IP is different from engine's he_fqdn resolved IP", 'ansible_result': u'type: <type \'dict\'>\nstr: {\'msg\': u"Engine VM IP address is while the engine\'s he_fqdn ovirt1-engine.kelleykars.org resolves to 192.168.122.2. If you are using DHCP, check your DHCP reservation configuration", \'changed\': False, \'_ansible_no_log\': False}', 'task_duration': 1, 'ansible_host': u'localhost', 'ansible_playbook': u'/usr/share/ovirt-hosted-engine-setup/ansible/trigger_role.yml'}}:Q! The bug 1590266 says it should report the engine VM IP address xxx.xxx.xxx.xxx while the Engines he_fqdn is xxxxxxxxx I need to see what it thins is wrong as both dig fqdn engine name and dig -x ip return the correct information. Now this bug looks like it may play but I don't see the failed rediness check in the this log https://access.redhat.com/solutions/4462431 or is it because the vm fails or dies or ???

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Help installing oVirt on single machine, without cockpit
by Cameronsplaze222＠gmail.com 10 Jan '22

10 Jan '22

I'm trying to install both the oVirt engine (so I have the API), and hypervisor on the same machine. I'm hoping I don't need cockpit, and I can write some custom scripts to manage oVirt through the API. I tried a couple ways, and both were blocked: # on CentOS 9 stream, installing oVirt engine: On a fresh CentOS install, tried following the directions [here](https://www.ovirt.org/documentation/installing_ovirt_as_a_standalone_…. They failed at step 3.2, when adding the modules (missing groups or modules). Tried skipping it, but step 3.3.2 failed when running `dnf install ovirt-engine`, package couldn't be found. The closest package I see is `ovirt-hosted-engine-setup-2.5.4-1.el9.noarch`. Is that what I want? # On oVirt node, installing engine: Couldn't get the networking working, even though I added it during the install process. Also tried wired connection, and no luck. Blocked early on, but read this was SUPER minimal anyway, so maybe this wasn't the right path. I'm just trying to have a working API, along side the hypervisor to run vm's, both on the same machine. I'm down to go a third way too, if anyone has any ideas. Thanks!

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