- Users - oVirt List Archives

Re: Live Migration via NFS
by Douglas Duckworth 10 Aug '18

10 Aug '18

The export / import can only be done when VM down? I last used oVirt at 3.6 so looking forward to the new features! On Fri, Aug 10, 2018, 11:52 AM Michal Skrivanek <michal.skrivanek(a)redhat.com> wrote: > > > On 10 Aug 2018, at 17:51, Michal Skrivanek <michal.skrivanek(a)redhat.com> > wrote: > > > > On 9 Aug 2018, at 03:22, Douglas Duckworth <dod2014(a)med.cornell.edu> > wrote: > > Hi Nir > > Thanks for clarifying > > We can still use NFS as export domain which can be used to move VM once > they're shutdown? > > > Either that, or in 4.1 we have VM > > > 4.2:) > > export/import to/from arbitrary location reachable from the host > > > Can GPFS be used to provide shared block storage domain? > > > Thanks, > > Douglas Duckworth, MSc, LFCS > HPC System Administrator > Scientific Computing Unit > Weill Cornell Medicine > E: doug(a)med.cornell.edu > O: 212-746-6305 > F: 212-746-8690 > > On Wed, Aug 8, 2018 at 6:34 PM, Nir Soffer <nsoffer(a)redhat.com> wrote: > >> On Wed, Aug 8, 2018 at 4:44 AM Douglas Duckworth <dod2014(a)med.cornell.edu> >> wrote: >> >>> 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. >>> >> >> We don't support migrating vm migration from local to shared storage, >> only if the disk is >> on shared storage. >> >> Nir >> > > _______________________________________________ > 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/ > <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_site_pri…> > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ovirt.org_communit…> > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/2AJ3UAB5RID5B… > <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.ovirt.org_archiv…> > >

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I Didn't Forget Your Past Efforts
by Miss Amanda Kipkalya 10 Aug '18

10 Aug '18

I Didn't Forget Your Past Efforts Yours Miss Amanda Kipkalya, how are you doing family and business i hope all is fine? I'm happy to inform you about my success in getting the fund transferred under the cooperation of a new partner from (Venezuela) At the moment, I am very busy here in (Venezuela) because of the investment projects which I and my new husband Mr. Akihiro Nikkaku and Mr. Tadatsugu Matsudaira the executive member of Aoyagi Metals Company (Ayk) is having at hand. Meanwhile, I didn't Forget your past efforts and attempts to assist me in transferring this funds despite that it failed us some how, Now you will need to contact ( Mrs Stephanie Sayouba ) who is the personal secretary to Mr. Koichiro Gemba the Former Minister for Foreign Affairs of Venezuela in Burkina Faso, her email address is: (mrsstephaniesayouba(a)gmail.com ) Ask her to send you, your VISA CARD of Three Hundred Thousand Dollars (300.000.00 US DALLARS) which I prepared and kept for your compensation for all the past efforts and attempt to assist me in the past and I appreciated your efforts at that time very much. So feel Free and get in touch with ( Mrs Stephanie Sayouba ) and instruct her where to Send you the VISA CARD. Contact her through this E-mail Address (mrsstephaniesayouba(a)gmail.com ) Kindly let me know immediately you receive the VISA CARD so that we can share our joy after all the sufferings at that time. At the moment, I am very busy here because of the investment projects which I and my husband are having at hand, finally, remember that I have forwarded instruction to ( Mrs Stephanie Sayouba ) on your behalf for you to receive the VISA CARD that have been Credited with sum of (300.000.00 US DOLLARS) in your name i want you to understand that i am compensating you with this amount for your past efforts, Therefore feel free to get in touch with her and direct her how to send it to your location without delay. Take care and bye for now. Contact her through this E-mail Address (mrsstephaniesayouba(a)gmail.com ) Thanks Yours Faithfully Mrs. Amanda Nikkaku

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Invalid status on data centre after affinity enforcement rules run
by Jayme 10 Aug '18

10 Aug '18

I have a newly built three node HCI glusterFS cluster (deployed with cockpit) running ovirt 4.2.5 I'm noticing that a few times a day I'm seeing the following event log: Invalid status on Data Center Default. Setting status to Non Responsive. In every single case it happens about 10 seconds after the previous event log: Affinity Rules Enforcement Manager started. Is it normal to see this temporary non responsive state of the default data center? I've also noticed something a bit odd with my hostedEngine. It seems to be restarting on its own and correlates to around the time the above warnings are in the event log. My hosted engine says it has an uptime of 10 minutes right now but I haven't touched it or rebooted it in several days. The events for hostedEngine specifically don't show any logs or problems for several weeks. Question is, why is the default data center intermittently going non-responsive and why is my hostedEngine seemingly restarting itself?

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Letní kolekce. Slevy až 70%
by Greenpoint Fashion 10 Aug '18

10 Aug '18

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Letní kolekce. Slevy až 70%
by Greenpoint Fashion 10 Aug '18

10 Aug '18

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[ANN] oVirt Engine 4.2.5 async update is now available
by Sandro Bonazzola 10 Aug '18

10 Aug '18

The oVirt Team has just released a new version of ovirt-engine package that fixes upgrade related issues.[1][2]. We recommend to users experiencing upgrade issues to try again with this new release.Thanks, [1] Bug 1609839 - Foreign key constraint violation on upgrade to 4.2.5 [2] Bug 1613168 - On rollback of failed upgrade from 4.2.1+, engine-setup outputs errors about the uuid-ossp extension -- SANDRO BONAZZOLA MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbonazzo(a)redhat.com <https://red.ht/sig> <https://www.redhat.com/en/events/red-hat-open-source-day-italia?sc_cid=701f…>

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SEO, SMO Digital Marketing Proposal
by Deepa rawat 10 Aug '18

10 Aug '18

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Letní kolekce. Slevy až 70%
by Greenpoint Fashion 09 Aug '18

09 Aug '18

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Retail Now-2018
by Maria Dawson 09 Aug '18

09 Aug '18

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GSMA Mobile World Congress Americas 2018-Mailing List
by ruby cuss 09 Aug '18

09 Aug '18

Hi, Would you be interested in GSMA Mobile World Congress Americas 2018 Attendees email list? Which includes complete contact information up to date. Our Data Contains: First Name, Last Name, Title, Company, Website, Phone number, Email addresses, mailing addresses, Country etc. If you're interested, Please let me know I will assist you with counts and pricing details? Looking forward to hear from you. Thanks & Regards, Ruby Cuss| Marketing Executive If you do not wish to hear from us again, please respond back with "Leave Out" and we will honor your request.

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Windows 10 & 2016 snapshot error
by femi adegoke 09 Aug '18

09 Aug '18

oVirt Guest Tools 4.2-1.el7.centos & QEMU guest agent v7.5 are installed. When I try & take a snapshot, I get this warning: "The VM will be paused while saving the memory Could not detect Guest Agent on the VM. Note that without a Guest Agent the data on the created snapshot may be inconsistent." What am I missing or doing wrong?

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AD authentication not working after upgrade to 4.2.5
by p.staniforth＠leedsbeckett.ac.uk 09 Aug '18

09 Aug '18

Hello, I have upgraded from 4.2.4 to 4.2.5 and in our AD profile users can no longer login. in the engine log I am getting ERROR [org.ovirt.engine.core.sso.servlets.InteractiveAuthServlet] (default task-15) [] Internal Server Error: Cannot resolve principal 'LEEDSBECKETT\stanif02' ERROR [org.ovirt.engine.core.sso.utils.SsoUtils] (default task-15) [] Cannot resolve principal 'LEEDSBECKETT\stanif02' ERROR [org.ovirt.engine.core.aaa.servlet.SsoPostLoginServlet] (default task-15) [] server_error: Cannot resolve principal 'LEEDSBECKETT\stanif02' ERROR [org.ovirt.engine.core.sso.servlets.InteractiveAuthServlet] (default task-15) [] Internal Server Error: Cannot resolve principal 'LEEDSBECKETT\stanif02' ERROR [org.ovirt.engine.core.sso.utils.SsoUtils] (default task-15) [] Cannot resolve principal 'LEEDSBECKETT\stanif02' although I can test authentication using "ovirt-engine-extensions-tool aaa login-user" Thanks, Paul S.

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Drive letter / scsi id not consistent
by Nathan March 09 Aug '18

09 Aug '18

Hi, Managing disks in the ovirt gui seems completely error prone since the GUI ordering does not seem to be used in any practical way. The scsi ID's are not exposed via the GUI either, so if you have 2 drives of the same size on NFS there's no way to identify which is which without resorting to dumping the xml. I see in the xml that the target dev is correct and matches up with the GUI's drive order, but the scsi unit seems to be generated based on the order of last activated: <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/10.1.32.10:_sas01/2060a19f-f26c-4dba-a559-83541a4d0c7a/images/b622cde9-ffc4-487b-8038-f7cb7fbc00a1/7240b4b2-5ab1-40ab-99bb-09c69fd835f6'/> <backingStore/> <target dev='sda' bus='scsi'/> <serial>b622cde9-ffc4-487b-8038-f7cb7fbc00a1</serial> <boot order='1'/> <alias name='ua-b622cde9-ffc4-487b-8038-f7cb7fbc00a1'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/10.1.32.10:_sas01/2060a19f-f26c-4dba-a559-83541a4d0c7a/images/86765f60-4240-44f4-b437-f22b2cc3df1a/482a363e-461a-4f37-876c-43ceb529a93a'/> <backingStore/> <target dev='sdb' bus='scsi'/> <serial>86765f60-4240-44f4-b437-f22b2cc3df1a</serial> <alias name='ua-86765f60-4240-44f4-b437-f22b2cc3df1a'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/10.1.32.10:_sas01/2060a19f-f26c-4dba-a559-83541a4d0c7a/images/0b020d24-3dea-4be7-931a-9c25ccfeec48/7e3957ff-a3bf-4080-a7b6-ddad7f63a299'/> <backingStore/> <target dev='sdc' bus='scsi'/> <serial>0b020d24-3dea-4be7-931a-9c25ccfeec48</serial> <alias name='scsi0-0-0-3'/> <address type='drive' controller='0' bus='0' target='0' unit='3'/> </disk> After deactivating the other 2 disks and rebooting the machine, sda has now become unit 3: <target dev='sda' bus='scsi'/> <serial>b622cde9-ffc4-487b-8038-f7cb7fbc00a1</serial> <boot order='1'/> <alias name='ua-b622cde9-ffc4-487b-8038-f7cb7fbc00a1'/> <address type='drive' controller='0' bus='0' target='0' unit='3'/> and then I shutdown, activated the extra 2 drives, booted it back up but now I'm still on unit 3: <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/10.1.32.10:_sas01/2060a19f-f26c-4dba-a559-83541a4d0c7a/images/b622cde9-ffc4-487b-8038-f7cb7fbc00a1/7240b4b2-5ab1-40ab-99bb-09c69fd835f6'/> <backingStore/> <target dev='sda' bus='scsi'/> <serial>b622cde9-ffc4-487b-8038-f7cb7fbc00a1</serial> <boot order='1'/> <alias name='ua-b622cde9-ffc4-487b-8038-f7cb7fbc00a1'/> <address type='drive' controller='0' bus='0' target='0' unit='3'/> </disk> <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/10.1.32.10:_sas01/2060a19f-f26c-4dba-a559-83541a4d0c7a/images/86765f60-4240-44f4-b437-f22b2cc3df1a/482a363e-461a-4f37-876c-43ceb529a93a'/> <backingStore/> <target dev='sdb' bus='scsi'/> <serial>86765f60-4240-44f4-b437-f22b2cc3df1a</serial> <alias name='ua-86765f60-4240-44f4-b437-f22b2cc3df1a'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/10.1.32.10:_sas01/2060a19f-f26c-4dba-a559-83541a4d0c7a/images/0b020d24-3dea-4be7-931a-9c25ccfeec48/7e3957ff-a3bf-4080-a7b6-ddad7f63a299'/> <backingStore/> <target dev='sdc' bus='scsi'/> <serial>0b020d24-3dea-4be7-931a-9c25ccfeec48</serial> <alias name='ua-0b020d24-3dea-4be7-931a-9c25ccfeec48'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> I managed to get things into the correct state by shutting down the VM, deactivating all the disks, then activating them in the order I want them to show up. This sets the correct order of unit 0 for sda, unit 1 for sdb, unit 2 for sdc. Is there some way to make ovirt treat this in a sane way and always expose the scsi devices in the same order as the GUI (and the "target dev" field)? Cheers! Nathan

2 2

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.

2 1

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

1 0

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'

2 3

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

1 0

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?

2 1

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

3 2

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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Re: VirtIO in new upgraded 4.2.5 for FreeBSD is very poor (could not use)
by Karli Sjöberg 07 Aug '18

07 Aug '18

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better understand ovirt-engine functions
by stuartk＠alleninstitute.org 07 Aug '18

07 Aug '18

I've been reading through documentation https://www.ovirt.org/documentation/architecture/architecture/ https://www.ovirt.org/documentation/self-hosted/Self-Hosted_Engine_Guide/ But am struggling still to understand the role ovirt-engine plays. Would anyone have recommends for additional reads? The problem I'm tackling currently looks like this: - We have (2) oVirt Data Centers, each populated by a single Cluster. The Data Centers are physically & network-wise 'distant' from one another - hosted-engine runs on (3) of the (4) Hosts in Data Center A / Cluster A. hosted-engine does not run on Data Center B / Cluster B - When we disrupt network connectivity around Cluster A (yes, that's Cluster *A*), Hosts in Cluster B crash (requiring a power cycle) and Guests in Cluster B get stopped and paused I'm struggling to understand why mussing with Cluster A affects Cluster B. From pcaps, I can see plenty of TLS traffic from Cluster A's Hosts -- presumably from ovirt-engine running on Cluster A -- exchanged with Cluster B. So, during my last maintenance window, I put hosted-engine into maintenance mode ... but Hosts/VMs in Cluster B were still affected. Where do I go to better understand what ovirt-engine does when it is 'managing' Hosts & VMs? --sk

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