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Live migration fails
by Nick Vercampt 14 Apr '16

14 Apr '16

Dear Sirs I'm writing to ask a question about the live migration on my oVirt setup. I'm currently running oVirt 3.6 on a virtual test enviroment with 1 default cluster (2 hosts, CentOS 7) and 1 Gluster enabled cluster (with 2 virtual storage nodes, also CentOS7). My datacenter has a shared data and iso volume for the two hosts (both GlusterFS) Problem: When i try to migrate my VM (Tiny Linux) from host1 to host2 the operation fails. Question: What log should I check to find a more detailed error message or do you have an idea what the problem might be? Kind Regards Nick Vercampt

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RESTAPI and kerberos authentication
by Marcel Galke 14 Apr '16

14 Apr '16

Hello, I need to automatically create a list of all the VMs and the storage path to their disks in the data center for offline storage for desaster recovery. We have oVirt 3.6 and IPA 4.2.0. To achieve this my idea was to query the API using Kerberos authentication and a keytab. This could then run as cronjob. Using username and password is not an option. To configure oVirt for use with IPA I've run engine-manage-domains but the result is not exactly what I'm looking for (despite from the fact, that I can add direcotry users etc.). Next I tried the generic LDAP provider as per documentation https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualiza… It was quite easy to get Apache to authenticate against IPA, but I did not manage to access the API. Each try ended with an "HTTP/1.1 401 Unauthorized". At the moment Apache authentication appears first and then the RESTAPI auth dialog comes up. Some facts about my setup: oVirt Host: -OS: CentOS 6.7 -Engine Version: 3.6 IPA Host: -OS: CentOS 7.2 -IPA Version: 4.2.0 I might mix some things up. Please help me to find out how to achieve my goal. I can provide more information if required. Thanks a lot! Best regards Marcel

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Importing An Ubuntu Disk
by Charles Tassell 14 Apr '16

14 Apr '16

Hello, I was wondering if there is any way to import a disk image (qcow/qcow2) into an oVirt storage domain? I've tried v2v but it won't work because the image customization parts of it won't deal with Ubuntu, and I tried import-to-ovirt.pl but the disks it creates seem to be broken in some way that prevents them from booting when attached to a VM. I've seen some references to creating a pre-allocated disk of the same size and then using dd to overwrite the contents of it, but is there a better method? Or should I just import my existing VMs by booting off a system rescue CD and restoring backups over the network?

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VM has been paused due to no Storage space error.
by nicolas＠devels.es 14 Apr '16

14 Apr '16

Hi, We're running oVirt 3.6.4.1-1. Lately we're seeing a bunch of events like these: 2016-04-13 10:52:30,735 INFO [org.ovirt.engine.core.vdsbroker.VmAnalyzer] (DefaultQuartzScheduler_Worker-86) [60dea18f] VM 'f9cd282e-110a-4896-98d3-6d320662744d'(vm.domain.com) moved from 'Up' --> 'Paused' 2016-04-13 10:52:30,815 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-86) [60dea18f] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM vm.domain.com has been paused. 2016-04-13 10:52:30,898 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-86) [60dea18f] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM vm.domain.com has been paused due to no Storage space error. 2016-04-13 10:52:52,320 WARN [org.ovirt.engine.core.vdsbroker.irsbroker.IrsProxyData] (org.ovirt.thread.pool-8-thread-38) [] domain '5de4a000-a9c4-489c-8eee-10368647c413:iscsi01' in problem. vds: 'host6.domain.com' 2016-04-13 10:52:55,183 INFO [org.ovirt.engine.core.vdsbroker.VmAnalyzer] (DefaultQuartzScheduler_Worker-70) [3da0f3d4] VM 'f9cd282e-110a-4896-98d3-6d320662744d'(vm.domain.com) moved from 'Paused' --> 'Up' 2016-04-13 10:52:55,318 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-70) [3da0f3d4] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM vm.domain.com has recovered from paused back to up. The storage domain is far from being full, though (400+ G available right now). Could this be related to this other issue [1]? If not, how could I debug what's going on? Thanks. [1]: https://www.mail-archive.com/users@ovirt.org/msg32079.html

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Educational use case question
by Michael Hall 14 Apr '16

14 Apr '16

Hi I am teaching IT subjects in TAFE (a kind of post-secondary technical college) in Australia. We are currently looking for a virtualisation platform that will allow students to install and manage VMs via web interface. VMware is being proposed but I am trying to get KVM and the RedHat ecosystem in the lab as much as possible. I have reasonable experience with running virt manager on CentOS 7, but oVirt is new. I have it installed and running OK but am not sure how to proceed with configuration. I basically want to run a single physical server which will be the KVM host, the ISO and data store, and the home of oVirt engine ... in other words a complete oVirt-managed KVM virtualisation platform running on one physical machine (32GB RAM). It will only ever need to run a handful of VMs with little or no real data or load. Is this possible/feasible? If possible/feasible, where should oVirt engine go ... on the host itself, or into a VM guest? The web interface is what is making oVirt an attractive option at this stage, as students will be working from Windows clients on a corporate network. Do VM GUI display well in the browser? Thanks for any advice Mike Hall

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Re: [ovirt-users] Ovirt VM to kvm image
by Nathanaël Blanchet 14 Apr '16

14 Apr '16

This is a multi-part message in MIME format. --------------030203070900070908050609 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On any host of the cluster, you will find the export domain mount point=20 under /rhev/data-center/mnt/MOUNT Then, you can apply a succession of grep command to find the ids you=20 need form $MOUNT, for example * find the vm: ID=3D$(grep $VMNAME -r master/vms/ | awk -F "/" '{ print $3 }') // gives the vm id * find the disk id : DISK=3Dgrep 'fileRef=3D"' master/vms/$ID | awk -F ' ' '{print $5}' | = awk -F \" '{print $2}' // gives the disk id * Copy the image anywhere you want. rsync -av images/DISK mount_point:/$VMNAME.img Note, you can do the same directly on any file system storage domain=20 based, but be careful that the vm is down before. If you want to do the same with a block storage domain, you may use dd=20 instead of rsync. Le 13/04/2016 16:27, Budur Nagaraju a =C3=A9crit : > > I have exported VM to export domain,may I know the tools to or=20 > commands to convert ? > > On Apr 13, 2016 7:53 PM, "Nathana=C3=ABl Blanchet" <blanchet(a)abes.fr=20 > <mailto:blanchet@abes.fr>> wrote: > > Yes it is doable by searching relative ids on the storage, but the > simpliest way to do such a thing is exporting your vm via the > export domain, then the disk will be in raw format on the nfs > share. Finally, you may manually redefine your vm properties to > libvirt/kvm. > > Le 13/04/2016 14:00, Budur Nagaraju a =C3=A9crit : >> >> Hi >> >> Is there anyways to convert ovirt VM to kvm .IMG VM ? >> >> Thanks, >> Nagaraju >> >> >> >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org <mailto:Users@ovirt.org> >> http://lists.ovirt.org/mailman/listinfo/users > > --=20 > Nathana=C3=ABl Blanchet > > Supervision r=C3=A9seau > P=C3=B4le Infrastrutures Informatiques > 227 avenue Professeur-Jean-Louis-Viala > 34193 MONTPELLIER CEDEX 5 =09 > T=C3=A9l. 33 (0)4 67 54 84 55 > Fax 33 (0)4 67 54 84 14 > blanchet(a)abes.fr <mailto:blanchet@abes.fr> =20 > --=20 Nathana=C3=ABl Blanchet Supervision r=C3=A9seau P=C3=B4le Infrastrutures Informatiques 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 =09 T=C3=A9l. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 blanchet(a)abes.fr --------------030203070900070908050609 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html> <head> <meta content=3D"text/html; charset=3Dutf-8" http-equiv=3D"Content-Ty= pe"> </head> <body text=3D"#000000" bgcolor=3D"#FFFFFF"> On any host of the cluster, you will find the export domain mount point under /rhev/data-center/mnt/MOUNT<br> Then, you can apply a succession of grep command to find the ids you need form $MOUNT, for example<br> <ul> <li>find the vm:<br> ID=3D$(grep $VMNAME -r master/vms/ | awk -F "/" '{ print $3 }') /= / gives the vm id</li> <li>find the disk id :<br> DISK=3Dgrep 'fileRef=3D"' master/vms/$ID | awk -F ' ' '{print $5}= ' | awk -F \" '{print $2}' // gives the disk id<br> </li> <li>Copy the image anywhere you want.<br> rsync -av images/DISK mount_point:/$VMNAME.img</li> </ul> <p>Note, you can do the same directly on any file system storage domain based, but be careful that the vm is down before.<br> If you want to do the same with a block storage domain, you may use dd instead of rsync.<br> </p> <br> <br> <br> <br> <div class=3D"moz-cite-prefix">Le 13/04/2016 16:27, Budur Nagaraju a =C3=A9crit=C2=A0:<br> </div> <blockquote cite=3D"mid:CAHNF9Q8M2Gh+QMdCyauYUJvEk8fzUBuuvXqp1xVmLwxhz7Xiag@mail.gmai= l.com" type=3D"cite"> <p dir=3D"ltr">I have exported VM to export domain,may I know the tools to or commands to convert ?</p> <div class=3D"gmail_quote">On Apr 13, 2016 7:53 PM, "Nathana=C3=ABl Blanchet" <<a moz-do-not-send=3D"true" href=3D"mailto:blanchet@abes.fr">blanchet(a)abes.fr</a>> wrote= :<br type=3D"attribution"> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div text=3D"#000000" bgcolor=3D"#FFFFFF"> Yes it is doable by searching relative ids on the storage, but the simpliest way to do such a thing is exporting your vm via the export domain, then the disk will be in raw format on the nfs share. Finally, you may manually redefine your vm properties=C2=A0 to libvirt/kvm.<br> <br> <div>Le 13/04/2016 14:00, Budur Nagaraju a =C3=A9crit=C2=A0:<= br> </div> <blockquote type=3D"cite"> <p dir=3D"ltr">Hi </p> <p dir=3D"ltr">Is there anyways to convert ovirt VM to kvm .IMG VM ?</p> <p dir=3D"ltr">Thanks,<br> Nagaraju</p> <br> <fieldset></fieldset> <br> <pre>_______________________________________________ Users mailing list <a moz-do-not-send=3D"true" href=3D"mailto:Users@ovirt.org" target=3D"_bl= ank">Users(a)ovirt.org</a> <a moz-do-not-send=3D"true" href=3D"http://lists.ovirt.org/mailman/listin= fo/users" target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/users= </a> </pre> </blockquote> <br> <pre cols=3D"72">--=20 Nathana=C3=ABl Blanchet Supervision r=C3=A9seau P=C3=B4le Infrastrutures Informatiques 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 =09 T=C3=A9l. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 <a moz-do-not-send=3D"true" href=3D"mailto:blanchet@abes.fr" target=3D"_b= lank">blanchet(a)abes.fr</a> </pre> </div> </blockquote> </div> </blockquote> <br> <pre class=3D"moz-signature" cols=3D"72">--=20 Nathana=C3=ABl Blanchet Supervision r=C3=A9seau P=C3=B4le Infrastrutures Informatiques 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 =09 T=C3=A9l. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:blanchet@abes.fr">bl= anchet(a)abes.fr</a> </pre> </body> </html> --------------030203070900070908050609--

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Re: [ovirt-users] stalls during live Merge Centos 7 / qemu 2.3
by Pavel Gashev 13 Apr '16

13 Apr '16

Markus, So all CPU threads are blocked by the main loop. The main loop is busy draining IO requests from all drives while there are other block commit jobs active... It looks like currently QEMU just can't live merge more than one drive simultaneously without blocking VCPUs. As workaround you can delete disk snapshots one-by-one, and then delete disk-less VM snapshot. The Storage tab has Disk Snapshots sub tab where you can remove a specific snapshot of a specific disk. On 12/04/16 21:39, "Markus Stockhausen" <stockhausen(a)collogia.de> wrote: >> Von: Pavel Gashev [Pax(a)acronis.com] >> Gesendet: Dienstag, 12. April 2016 16:15 >> An: Markus Stockhausen; users >> Betreff: Re: [ovirt-users] stalls during live Merge Centos 7 / qemu 2.3 >> >> Markus, >> >> I saw similar issues. Looks like it's related to multidisk VMs under high disk load. No relations with guest OS. No relations with IO threads. >> >> >> I didn't debug it. Can you please show a backtrace of a thread in __lll_lock_wait ? > >Hi Pavel. > >thanks for your response. I dont even need high disk load to >reproduce the issue. Just a simple script that writes 8k blocks >every 0.5 secs. I added the required info to the BZ. > >https://bugzilla.redhat.com/show_bug.cgi?id=1319400 > >Markus > >> >> >> On 11/04/16 18:13, "users-bounces(a)ovirt.org on behalf of Markus Stockhausen" <users-bounces(a)ovirt.org on behalf of stockhausen(a)collogia.de> wrote: >> >> >Hi there, >> > >> >I'm getting slowly mad about our new Centos 7 cluster. Whenever >> >I start a live merge the machine completely freezes. It seems to be >> >independent of the Guest OS (tried SLES 11 SP3, SLES11 SP4 and >> >SLES12). I already opened BZ1319400 because I'm clueless. >> > >> >Doing the same in our Fedora 20 cluster (qemu 2.1.3) we only see >> >small hiccups of 1-3 seconds at the start of the live merge but no >> >complete stall. Its the same VM! >> > >> >Just to be sure that it is not a specific problem of our topology >> >or SLES I would like to receive some feedback of the list if anyone >> >observes similar lockups in their environment. >> > >> >Thanks in advance. >> > >> >Markus >> >

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Looking for Python-SDK documentation
by Frank Thommen 13 Apr '16

13 Apr '16

Dear all, I'm currently lost at finding any documentation about the Python SDK (http://www.ovirt.org/develop/release-management/features/infra/python-sdk/) like provided classes, functions etc.. There are some examples on the mentioned page, but I cannot find a complete documentation. Our oVirt server is running CentOS 7 with ovirt-engine-sdk-python installed. However there doesn't seem to exist an ovirt-engine-sdk-python-docs package and I couldn't find any appropriate link on the oVirt documentation pages (http://www.ovirt.org/documentation/) Any ideas, where the documentation is available? Cheers Frank

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Monitor your oVirt datacenter with Prometheus
by Roman Mohr 13 Apr '16

13 Apr '16

Hi, I created a blogpost on how to monitor your oVirt datacenter with Prometheus [1]. This way you get access to real time metrics and can use the powerful Prometheus query language, the Prometheus Alertmanager and visualization tools like Grafana. Tasks like finding hosts which are underutilized, finding VMs which are not behaving or even comparing resource usage profiles of whole cluster over days become only a matter of writing the right Prometheus query. Further you can use the Prometheus Alertmanager for alerting. An example which is also part of the post [1]: Visualizing the sum of the CPU usage of all VMs for ever host is as simple as sum(vm_cpu_user) by (host). To close the gap between oVirt Engine and Prometheus I had to create two services vdsm-prometheus (github[2], docker hub[3]) and ovirt-prometheus-bridge (github[4], copr[5]). An ansible role [6] to roll out vdsm-prometheus to all oVirt 3.5 or 3.6 hosts exists too. So make sure to checkout the post [1] and let me know if you find this useful. Best Regards, Roman [1] http://rmohr.github.io/virtualization/2016/04/12/monitor-your-ovirt-datacen… [2] https://github.com/rmohr/vdsm-prometheus [3] https://copr.fedorainfracloud.org/coprs/rfenkhuber/vdsm-prometheus/ [4] https://github.com/rmohr/ovirt-prometheus-bridge [5] https://hub.docker.com/r/rmohr/ovirt-prometheus-bridge/ [6] https://galaxy.ansible.com/rmohr/vdsm-prometheus/

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Ovirt VM to kvm image
by Budur Nagaraju 13 Apr '16

13 Apr '16

Hi Is there anyways to convert ovirt VM to kvm .IMG VM ? Thanks, Nagaraju

2 1