September 2017 - Users - oVirt List Archives

CPU reporting Intel Xeon E312xx (Sandy Bridge)
by LukeFlynn 18 Sep '17

18 Sep '17

I'm new to ovirt and I'm wondering if this affects performance, or if it is just a layer of abstraction given to the VM? I was able to get correct CPU reporting by ticking "pass-through host CPU" but I'm not sure if this is a necessary thing to do. I assume it's just an abstraction thing for live migration or something of the sort, could someone shed some light? Thanks, Luke

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Fwd: PFSense VLAN Trunking
by LukeFlynn 18 Sep '17

18 Sep '17

---------- Forwarded message ---------- From: LukeFlynn <lukehflynn(a)gmail.com> Date: Mon, Sep 18, 2017 at 5:15 PM Subject: Re: [ovirt-users] PFSense VLAN Trunking To: FERNANDO FREDIANI <fernando.frediani(a)upx.com> Good news, I found a way to trunk vlans! I couldn't get it working with native linux bridges, instead I opted to migrate my ovirt cluster to use OpenVSwitch instead (which is what XenServer is using among others). The default behavior of untagged OVS networks is to trunk all, so I simply had to create an untagged network on the same interface (or bond) as the tagged network and pass the untagged to pfsense. This didn't work with native bridging, but works as expected with OVS. Good news is that network throughput is great, I'm able to get full gigabit speeds! Just make sure you disable tx offloading in the PFSense web gui. There are a couple of gotchas when switching a cluster to OVS: 1.) It doesn't appear to be fully automated just yet (support is experimental) 2.) You must manually enable and start the openvswitch.service 3.) I had to manually tear down all of the network configuration VDSM did, and basically set the host networking up from scratch in the web UI after moving the cluster to OVS. Hope this helps some folks! Luke On Mon, Sep 18, 2017 at 8:26 AM, FERNANDO FREDIANI < fernando.frediani(a)upx.com> wrote: > I also wanted to know this which is pretty useful for these scenario. > Great question ! > > Fernando Frediani > > On 17/09/2017 23:33, LukeFlynn wrote: > > Hello, > > I'm wondering if there is a way to trunk all VLANs to a PFSense VM similar > to using the "4095" tag in ESXi. I've tried using an untagged interface on > the same bond to no avail. > > > > > Anyone have any ideas? Perhaps it's a problem with the virtio drivers and > not the network setup itself? > > Thanks, > > Luke > > > _______________________________________________ > Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users > > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >

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oVirt HA behavior
by Alex K 18 Sep '17

18 Sep '17

Hi All, I have the following issue with the HA behavior of oVirt 4.1 and need to check with you if there is any work around from your experience. I have 3 servers (A, B, C) with hosted engine in self hosted setup on top gluster with replica 3 + 1 arbiter. All good except one point: The hosts have been configured with power management using IPMI (server iLO). If I disconnect power from one host (say C) (or disconnect all network cables of the host) the two other hosts go to a loop where they try to verify the status of the host C by issuing power management commands to the host C. Since power of host is off the server iLO does not respond on the network and the power management of host C fails, leaving the VMs that were running on the host C in an unknown state and they are never restarted to the other hosts. Is there any fencing option to change this behavior so as if both available hosts fail to do power management of the unresponsive host to decide that the host is down and to restart the VMs of that host to the other available hosts. I could also add additional power management through UPS to avoid this issue but this is not currently an option and I am interested to see if this behavior can be tweaked. Thanx, Alex

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ovirt-node-ng-installer vs. ovirt-node-ng-installer-ovirt
by gabriel_skupien＠o2.pl 18 Sep '17

18 Sep '17

I will appreciate if somebody explains me the difference between ovirt-node-ng-installer and ovirt-node-ng-installer-ovirt IOS files?

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Update compute nodes to CentOS 7.4?
by Eduardo Mayoral 18 Sep '17

18 Sep '17

Now that CentOS 7.4 is out, I am wondering if I can just "yum update" my compute nodes. Has anyone already done so? Any issues found? -- Eduardo Mayoral Jimeno (emayoral(a)arsys.es) Administrador de sistemas. Departamento de Plataformas. Arsys internet. +34 941 620 145 ext. 5153

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oVirt console without disconnecting user
by Alex K 18 Sep '17

18 Sep '17

Hi All, When I get console of a Windows VM (Windows 10 x64bit) I am requested to authenticate and then the user is disconnected (though not logged out as the apps of the user are still open). I have tested this with QXL/SPICE and VGA/VNC console mode. Is there any mode at oVirt console to get console window at VM of user and in the same time allow the user to continue the session while me observing the user session, similar as when connecting with VNC? Thanx, Alex

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PFSense VLAN Trunking
by LukeFlynn 18 Sep '17

18 Sep '17

Hello, I'm wondering if there is a way to trunk all VLANs to a PFSense VM similar to using the "4095" tag in ESXi. I've tried using an untagged interface on the same bond to no avail. Anyone have any ideas? Perhaps it's a problem with the virtio drivers and not the network setup itself? Thanks, Luke

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[ANN] oVirt 4.1.6 Release is now available
by Sandro Bonazzola 18 Sep '17

18 Sep '17

The oVirt Project is pleased to announce the availability of oVirt 4.1.6 release, as of September 18th, 2017 This update is the sixth in a series of stabilization updates to the 4.1 series. 4.1.6 brings 23 enhancements and 100 bugfixes, including 53 high or urgent severity fixes, on top of oVirt 4.1 series Starting from 4.1.5 oVirt supports libgfapi [5]. Using libgfapi provides a real performance boost for ovirt when using GlusterFS . Due to a known issue [6], using this will break live storage migration. This is expected to be fixed soon. If you do not use live storage migration you can give it a try. Use [7] for more details on how to enable it. This release is available now for: * Red Hat Enterprise Linux 7.4 or later * CentOS Linux (or similar) 7.4 or later This release supports Hypervisor Hosts running: * Red Hat Enterprise Linux 7.4 or later * CentOS Linux (or similar) 7.4 or later * oVirt Node 4.1 See the release notes[3] for installation / upgrade instructions and a list of new features and bugs fixed. Notes: - oVirt Appliance is already available - oVirt Live and oVirt Node are not yet available, waiting for CentOS to publish qemu-kvm-ev 2.9.0 before composing ISOs based on CentOS 7.4. Will be published in [4] when ready. Additional Resources: * Read more about the oVirt 4.1.6 release highlights: http://www.ovirt.org/release/4.1.6/ * 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] https://www.ovirt.org/community/ [2] https://bugzilla.redhat.com/enter_bug.cgi?classification=oVirt [3] http://www.ovirt.org/release/4.1.6/ [4] http://resources.ovirt.org/pub/ovirt-4.1/iso/ [5] http://staged-gluster-docs.readthedocs.io/en/release3.7.0beta1/Features/lib… [6] https://bugzilla.redhat.com/show_bug.cgi?id=1306562 [7] http://www.ovirt.org/develop/release-management/features/storage/glusterfs-… -- SANDRO BONAZZOLA ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D Red Hat EMEA <https://www.redhat.com/> <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>

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Ovirt overview presentation
by Piotr Kliczewski 18 Sep '17

18 Sep '17

All, I am going to give a presentation about ovirt [1]. It will be an introductory (entry level) presentation and looking for some information. Has anyone some slides or info that I could/should present? So far I got a presentation from Yaniv B. [2] Thanks in advance, Piotr [1] https://jesien.org/2017/en/agenda/ [2] https://www.slideshare.net/bronhaim/fossasia-16-ovirt-overview

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gluster replica volumes with different data usage
by Alex K 18 Sep '17

18 Sep '17

Hi all, I have replica 3 with 1 arbiter. When checking the gluster volume bricks they are reported as using different space, as per attached. How come they use different space? One would expect to use exactly the same space since they are replica. Thanx, Alex

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