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Live Migration via NFS
by Douglas Duckworth 09 Aug '18

09 Aug '18

Hi I haven't used oVirt in several years so wanted to ask how live migration may have changed. Can NFS facilitate live migration in cluster of two hosts each which have NFS mounted? The hosts would have local attached storage which would be the original location of VMs.

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Can ping external IPs from VM, but can't curl/resolve DNS (DNS records are set properly)
by sagnik.sasmal2309＠gmail.com 08 Aug '18

08 Aug '18

The title says most of it. I'm using Hetzner (host). Possibly some firewall / filter messing up. vNIC Profiles: https://i.imgur.com/Kf8X8TZ.png

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python error in syslog of all hosts in new HCI default build
by Jayme 08 Aug '18

08 Aug '18

Recently built a three host HCI with oVirt node 4.2.5. I am seeing the following error in each hosts syslog often. What does it mean and how can it be corrected? vdsm[3470]: ERROR Internal server error#012Traceback (most recent call last):#012 File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 606, in _handle_request#012 res = method(**params)#012 File "/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 197, in _dynamicMethod#012 result = fn(*methodArgs)#012 File "/usr/lib/python2.7/site-packages/vdsm/gluster/apiwrapper.py", line 91, in vdoVolumeList#012 return self._gluster.vdoVolumeList()#012 File "/usr/lib/python2.7/site-packages/vdsm/gluster/api.py", line 90, in wrapper#012 rv = func(*args, **kwargs)#012 File "/usr/lib/python2.7/site-packages/vdsm/gluster/api.py", line 818, in vdoVolumeList#012 status = self.svdsmProxy.glusterVdoVolumeList()#012 File "/usr/lib/python2.7/site-packages/vdsm/common/supervdsm.py", line 55, in __call__#012 return callMethod()#012 File "/usr/lib/python2.7/site-packages/vdsm/common/supervdsm.py", line 53, in <lambda>#012 **kwargs)#012 File "<string>", line 2, in glusterVdoVolumeList#012 File "/usr/lib64/python2.7/multiprocessing/managers.py", line 773, in _callmethod#012 raise convert_to_error(kind, result)#012AttributeError: 'str' object has no attribute 'iteritems'

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oVirt 4.2.6 + GlusterFS
by radu＠radu.cat 08 Aug '18

08 Aug '18

Hello, I have 24 HP DL360 G7 all with 64G RAM and 1TB SAS disks. What I want to archive is to use all the nodes with ovirt (one will be for the controller + iso domain) and use GluterFS in the same nodes for the storage domain. Idk if anyone tried it before, but I want it to replace my actual "standalone" production hypervisors schema. Thanks in advance

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Fwd: Upgraded to 4.2
by nreaction 08 Aug '18

08 Aug '18

I recently updated to 4.2 and when I restarted ovirt it started shutting down all my guests on host servers, how can I disable ovirt not to do that?

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Failed to hot-plug disk
by Punaatua PK 08 Aug '18

08 Aug '18

Hello, I have a problem when i tried to hotplug a disk to a VM. Here is the situation. We use a VM (let's call this backupVM) which is responsible of doing our VM backup by : - Making a snapshot of the VM we want to backup - Attach the snapshot disk - Make the copy using DD - Unplug the snapshot disk and then delete snapshot. For some reason that i don't know, for certain VM, the backupVM cannot hot plug the snapshot disk. I'm using ovirt 4.2.4 Here is what is see in engine.log 2018-08-04 19:52:30,496-10 ERROR [org.ovirt.engine.core.bll.storage.disk.AttachDiskToVmCommand] (default task-61) [361eca85-ca85-4e23-b292-cd8303a1a86d] Command 'org.ovirt.engine.core.bll.storage.disk.AttachDiskToVmCommand' failed: EngineException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to HotPlugDiskVDS, error = internal error: unable to execute QEMU command 'device_add': Failed to get shared "write" lock, code = 45 (Failed with error FailedToPlugDisk and code 45) Here is the vdsm.log 2018-08-04 19:51:38,512-1000 INFO (jsonrpc/5) [virt.vm] (vmId='78ef239f-3cb3-4eef-921f-f989724009ef') Hotplug disk xml: <?xml version='1.0' encoding='utf-8'?> <disk address="" device="disk" snapshot="no" type="file"> <source file="/var/lib/vdsm/transient/225ec856-d661-4374-bb7d-8ea7168fe5f2-b641bb09-325a-4932-a9af-32c907e4a381.D52Nkj" /> <target bus="virtio" dev="vdg" /> <serial>c312a0c3-8c58-472f-99ad-cfbabb42337d</serial> <driver cache="writethrough" error_policy="stop" io="threads" name="qemu" type="qcow2" /> </disk> (vm:3859) 2018-08-04 19:51:38,672-1000 ERROR (jsonrpc/5) [virt.vm] (vmId='78ef239f-3cb3-4eef-921f-f989724009ef') Hotplug failed (vm:3867) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 3865, in hotplugDisk self._dom.attachDevice(driveXml) File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 98, in f ret = attr(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 130, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 92, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 570, in attachDevice if ret == -1: raise libvirtError ('virDomainAttachDevice() failed', dom=self) libvirtError: internal error: unable to execute QEMU command 'device_add': Failed to get shared "write" lock here is libvirtd log in /var/log/messages libvirtd: 2018-08-05 05:51:38.637+0000: 4967: error : qemuMonitorJSONCheckError:389 : internal error: unable to execute QEMU command 'device_add': Failed to get shared "write" lock Do you guys have any idea of what going on ? How can i check this lock ?

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VirtIO in new upgraded 4.2.5 for FreeBSD is very poor (could not use)
by Paul.LKW 08 Aug '18

08 Aug '18

Dear All: I just upgraded my oVIrt-4.2.4 to 4.2.5 and nightmare begin, FreeBSD VMs hangs once the VM's VirtIO harddisk is some loading (eg. extracting a big tar ball, portsnap extract, etc.), I tried to create a VMs using back the IDE do not has any problem but got slow IO performance once using VirtIO it will hang as it like. I also tried to create another VMs with VirtIO-SCSI it seems the hang problem no occur but I got the oVirt-Host loading over 40 when VM harddisk have some little job, so conclusion is if you guys will using FreeBSD as guest please do not upgrade at the moment. In fact I feel every time the new version always have problem and causing user to nightmare. BR, Paul.LKW

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Space in entity names (VM and Network) in oVirt
by Hari Prasanth Loganathan 08 Aug '18

08 Aug '18

Hi Team, I have VM's and Network's in oVirt with space in the name. How can I perform an exact search for the following name *Name1*: Aug X X *Name2*: Aug X X X 1) I try to search with space in the name, It is not working. https://172.30.60.42/ovirt-engine/api/networks?search=name%3DAug X X It is not returning any result. 2) I try to search with encoded value for space in the name, It is not working. (encoded value for space is %20) https://172.30.60.42/ovirt-engine/api/networks?search=name%3DAug%20X%20X 3) I try to search like below with '*' for space and end up getting both the values in response, https://172.30.60.42/ovirt-engine/api/networks?search=name%3DAug*X so what is the correct way to search the name with space ? Thanks, Hari -- DISCLAIMER - *MSysTechnologies LLC* This email message, contents and its attachments may contain confidential, proprietary or legally privileged information and is intended solely for the use of the individual or entity to whom it is actually intended. If you have erroneously received this message, please permanently delete it immediately and notify the sender. If you are not the intended recipient of the email message,you are notified strictly not to disseminate,distribute or copy this e-mail.E-mail transmission cannot be guaranteed to be secure or error-free as Information could be intercepted, corrupted, lost, destroyed, incomplete or contain viruses and MSysTechnologies LLC accepts no liability for the contents and integrity of this mail or for any damage caused by the limitations of the e-mail transmission.

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Re: Update to 4.2.5, Cant start VMs
by Vincent Royer 08 Aug '18

08 Aug '18

Indeed the Storage domains are via NFS served by Windows Server 2016. the workaround says "use NFSV3", I'm afraid this will break my existing installation. For now, all my VMs are running on one host that is still on 4.2.0. On Tue, Aug 7, 2018 at 2:35 PM Stefano Bovina <bovy89(a)gmail.com> wrote: > I don't know if this fit with your environment, but take a look (See > attachment). > > 2018-08-06 6:02 GMT+02:00 Vincent Royer <vincent(a)epicenergy.ca>: > >> I updated the engine, and one of my nodes to 4.2.5. I'm attempting to >> re-start the VMs that were pinned to it, and migrate another VM to it so >> that I can update my other node. >> >> When I try to start the VMs that were pinned to the host, I get: >> >> VM Tuning3 is down with error. Exit message: XML error: Multiple 'scsi' >>> controllers with index '0'. >> >> >> To fix this I tried to detach the disk and re-attach it, no luck. >> >> When I try to migrate a running VM to this host, I get: >> >> Host Letty has network interface which exceeded the defined threshold >>> [95%] (bond0: transmit rate[0%], receive rate [97%]) >> >> >> The host I'm migrating FROM gets a similar error, and the VM does not >> migrate. I tried the different migration policies without any luck. >> >> I did successfully migrate the Hosted Engine to the new host, no errors. >> >> Thanks for any advice! >> >> Vincent >> >> >> _______________________________________________ >> 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/V2EAQ2MRN77DS… >> >> >

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Update to 4.2.5, Cant start VMs
by Vincent Royer 07 Aug '18

07 Aug '18

I updated the engine, and one of my nodes to 4.2.5. I'm attempting to re-start the VMs that were pinned to it, and migrate another VM to it so that I can update my other node. When I try to start the VMs that were pinned to the host, I get: VM Tuning3 is down with error. Exit message: XML error: Multiple 'scsi' > controllers with index '0'. To fix this I tried to detach the disk and re-attach it, no luck. When I try to migrate a running VM to this host, I get: Host Letty has network interface which exceeded the defined threshold [95%] > (bond0: transmit rate[0%], receive rate [97%]) The host I'm migrating FROM gets a similar error, and the VM does not migrate. I tried the different migration policies without any luck. I did successfully migrate the Hosted Engine to the new host, no errors. Thanks for any advice! Vincent

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