CPU reporting Intel Xeon E312xx (Sandy Bridge)
by LukeFlynn
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
7 years, 3 months
Fwd: PFSense VLAN Trunking
by LukeFlynn
---------- 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
>
>
7 years, 3 months
oVirt HA behavior
by Alex K
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
7 years, 3 months
Update compute nodes to CentOS 7.4?
by Eduardo Mayoral
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
7 years, 3 months
oVirt console without disconnecting user
by Alex K
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
7 years, 3 months
PFSense VLAN Trunking
by LukeFlynn
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
7 years, 3 months
gluster replica volumes with different data usage
by Alex K
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
7 years, 3 months
