[ovirt-users] Re: How to test incremental backup

[Nir Soffer]

On Wed, Oct 31, 2018 at 12:29 PM Gianluca Cecchi 
wrote:

> Hello,
> based on this:
>
> https://ovirt.org/develop/release-management/features/storage/incremental-backup/
>

This page has significant changes in review, see:

diff:
https://github.com/oVirt/ovirt-site/pull/1777/commits/bc51f4a7867d9c7e3797da6da1d19e111cd2ff67

html:
https://github.com/oVirt/ovirt-site/blob/bc51f4a7867d9c7e3797da6da1d19e111cd2ff67/source/develop/release-management/features/storage/incremental-backup.html.md

how can I made an initial test run?
> Which version of hypervisor?
> Am I forced to test with RHEL 7.6 beta right now, or are there
> ovirt-node-ng master images available with the features?
> Which version of oVirt to use to try?
>

There is nothing to try yet.

The feature is still in design stage, and the underlying libvirt APIs are
in review and not available
even in libvirt upstream code.

The only think you can do is build libvirt with the current patches from:
https://repo.or.cz/libvirt/ericb.git

Then you can use Eric Blake presentation from KVM Forum 2018 (last week) to
test some flows:
https://events.linuxfoundation.org/wp-content/uploads/2017/12/Eric-Blake_2018-libvirt-incremental-backup.pdf

Nir
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[ovirt-users] Re: Networking - How to pass all vlan (trunk) to a guest VM?

[Edward Haas]

Yes, not setting any VLAN on a network implies all packets will pass on to
that network from the nic it is configured on.
Please share your host `ip addr` , `brctl show` and the name of the network
you configured.
Do you see relevant packets on the host nic?

Thanks,
Edy.

On Thu, Nov 1, 2018 at 5:29 PM Petr Horacek  wrote:

> Hello,
>
> you are right, with "Enable VLAN tagging" VMs should be connected to the
> network via a trunk.
>
> It should work, right Edward?
>
> Regards,
> Petr
>
> 2018-10-31 20:14 GMT+01:00 Jonathan Greg :
>
>> Hi,
>>
>> I didn't find the documentation about it... How I can pass all the vlan
>> (trunk) to a guest VM (without SR-IOV)?
>>
>> My switch is configured to trunk all vlans.
>> I do have configured a logical network with the "Enable VLAN tagging" box
>> uncheck and assign it to a VM. My understanding with this setting is that
>> tagged and untagged packet should be forwarded to the VM guest.
>> Unfortunately it doesn't work at all, if I run a tcpdump on the VM nic
>> attached to this logical network, I don't see anything... I would really
>> like to run a virtual router or firewall on my setup without having to
>> shutdown my VM and having attach a new vnic each time I want to add a new
>> vlan.
>>
>> Any idea?
>>
>> Jonathan
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>>
>
>
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[ovirt-users] Re: Networking - How to pass all vlan (trunk) to a guest VM?

[Petr Horacek]

Hello,

you are right, with "Enable VLAN tagging" VMs should be connected to the
network via a trunk.

It should work, right Edward?

Regards,
Petr

2018-10-31 20:14 GMT+01:00 Jonathan Greg :

> Hi,
>
> I didn't find the documentation about it... How I can pass all the vlan
> (trunk) to a guest VM (without SR-IOV)?
>
> My switch is configured to trunk all vlans.
> I do have configured a logical network with the "Enable VLAN tagging" box
> uncheck and assign it to a VM. My understanding with this setting is that
> tagged and untagged packet should be forwarded to the VM guest.
> Unfortunately it doesn't work at all, if I run a tcpdump on the VM nic
> attached to this logical network, I don't see anything... I would really
> like to run a virtual router or firewall on my setup without having to
> shutdown my VM and having attach a new vnic each time I want to add a new
> vlan.
>
> Any idea?
>
> Jonathan
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>
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[ovirt-users] Best Practice for Controller Backup

[David Johnson]

Is there a best practice for configuring a secondary ovirt engine to take
over in case of engine failure?

Thank you

Regards,
David Johnson
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[ovirt-users] Significant increase in memory consumption after upgrade.

[Abhishek Sahni]

Hello Team,

I have noticed that agent and broker are continuously failing after upgrade
and found a similar bug which is denoting the same errors.

I have attached the logs and screenshot over the same bug,

- https://bugzilla.redhat.com/show_bug.cgi?id=1639997

Can someone please help me with this? TIA

-- 
Thanks,

Abhishek Sahni
Computer Centre
IISER Bhopal
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[ovirt-users] Re: No data after update

[Yedidyah Bar David]

Hi,

On Mon, Oct 29, 2018 at 10:02 AM, Sandro Bonazzola  wrote:
>
>
>
> Il giorno sab 27 ott 2018 alle ore 20:13  ha 
> scritto:
>>
>> Hi all!
>>
>> Let me explain this step by step. Today I found out that certificates on 
>> engine expired (oVirt 3.3.1). I had trouble renewing them. After some 
>> investigation I found out that since version 3.5.4 certificates are renewed 
>> with engine-setup. All was ok when I updated (version by version) to version 
>> 3.5 (certs still not updated) but since my engine was running on FC19 I had 
>> to update to FC20 to continue update to desired version 3.5.4.
>
>
> Hi, please note oVirt 3.3 gone end of life as of March 27, 2014. I understand 
> upgrading is not easy for production sites, but for all oVirt users, I really 
> encourage you to upgrade to next point release not later than one month from 
> its GA. It really become difficult to assist you once more time passes and 
> other underlying subsystems receives updates which are not supported by the 
> obsoleted release.
>
>
>>
>> Fedora updated, yum updated engine-setup.
>
>
> Did you update postgresql database?
> Please review upgrade steps at 
> https://bugzilla.redhat.com/show_bug.cgi?id=1131828
>
>>
>> After engine-setup (certificates were updated!) I could login to oVirt 
>> webadmin, but... All data gone! No data center, no hosts, no VMs... It's all 
>> blank. Like I installed it from scratch.
>> I used psql to check and data is in database. So what could be wrong?
>>
>> Help, please help!
>
>
> Didi, Douglas, can you please help here?

Can you please check/share the setup (upgrade) logs, from
/var/log/ovirt-engine/setup ?
Also the engine's log in /var/log/ovirt-engine/engine.log .
It might give us a clue.

Best regards,
-- 
Didi
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[ovirt-users] oVirt deployment with GlusterFS with replica 3 arbiter 1

[hunter86_bg]

Hello community,

I am planing to deploy a lab with oVirt and I would like to know if the design 
in my mind has any flaws.
Current plan is to deploy oVirt on 2 workstations with 24GB of RAM and 8 
threads each while the  3rd machine will be a VM in a public Cloud and will be 
used for GlusterFS arbiter.

Is it a problem if the arbiter is a  vanilla CentOS 7 . I am affraid that oVirt 
will require all GlusterFS nodes to be also oVirt Hosts, but the VM will lack 
the necessary resources and I would like to not use that 3rd system.
Is this idea possible ?

Thanks for reading this confusing post and I hope I managed to explain my idea.

Best Regards,
Strahil 
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[ovirt-users] Re: Involuntary emergency upgrade from 4.1 to 4.2

[Yedidyah Bar David]

On Thu, Nov 1, 2018 at 6:13 AM David Johnson 
wrote:

> The saga has ended and all is well.
>
> When I stopped all of the active VM's, the storage domains came back to
> normal and came online. At that point I had to delete the VM's that had
> been running unmanaged on the hosts, then I could import all of the objects
> from he storage domain into the data center. the only thing I lost was a
> bitnami redmine VM that had been installed from an OVA. This was no major
> loss, since I backed it up at the beginning of this adventure.
>
> In retrospect, the biggest issues I had were:
> * being overly cautious because I didn't know which operations were
> destructive, and
> * finding the right actions in the GUI when I decided to take the plunge.
>
> Thank you all for your generous assistance.
>

Glad to hear that, thanks for the report!

Best regards,


> Regards,
> David Johnson
>
>
> On Tue, Oct 30, 2018 at 10:29 PM David Johnson <
> djohn...@maxistechnology.com> wrote:
>
>> Host 1 is now back in "normal" mode. It was stuck in preparing for
>> maintenance because the VM's were not fully under the control of the
>> cluster. Once I powered off the VM's it finished what it was doing,
>> rebooted, and is now properly part of the cluster.
>>
>> However, the main data domain is still in "Maintenance" state, and I
>> can't find any way to make it "Active". My ISO partition is also inactive,
>> with no visible way to make it "Active".
>>
>> Regards,
>> David Johnson
>> Director of Development, Maxis Technology
>> 844.696.2947 ext 702 (o)  |  479.531.3590 (c)
>> djohn...@maxistechnology.com
>>
>>
>> [image: Maxis Techncology] 
>> www.maxistechnology.com
>>
>>
>> *stay connected *
>>
>>
>> On Tue, Oct 30, 2018 at 4:22 PM David Johnson <
>> djohn...@maxistechnology.com> wrote:
>>
>>> Hi everyone, and thank you again for all of your help.
>>>
>>> Here is the latest update in the never ending story.
>>>
>>> I worked through NFS woes on my san, configured a throwaway storage
>>> domain to bootstrap the system, and have reconnected the storage domains.
>>>
>>> The main data domain is in "Maintenance" state
>>> Host 1 is in "Preparing for Maintenance" state with SPM = "normal",
>>> Host 2 is in "Up" state with SPM = "SPM",
>>>
>>> I think the next step is to get host 1 either fully into or out of
>>> maintenance mode, and the storage domain out of maintenance mode.
>>>
>>> Regards,
>>> David Johnson
>>> Director of Development, Maxis Technology
>>> 844.696.2947 ext 702 (o)  |  479.531.3590 (c)
>>> djohn...@maxistechnology.com
>>>
>>>
>>> [image: Maxis Techncology] 
>>> www.maxistechnology.com
>>>
>>>
>>> *stay connected *
>>>
>>>
>>> On Mon, Oct 29, 2018 at 10:10 PM Nathan Lager 
>>> wrote:
>>>
 The cluster will need a default storage domain before you can import
 your existing domain. That much I do remember.  What's causing your error I
 don't know. What sort of storage are you working with?

 On Mon, Oct 29, 2018, 6:04 PM David Johnson <
 djohn...@maxistechnology.com> wrote:

> Thank you everyone for all of your help. Here is where things stand
> now:
>
> I gave up trying to recover from backup. I wasn't able to mount the
> OVA. Since this is a test rack, I looked at the amount of time I've sunk
> into it already (about the same as it took to build from scratch the first
> time around) and decided that it was worthwhile to risk starting from
> scratch rather than become an overnight bit bashing Ovirt guru.
>
> I installed the 4.2 controller, upgraded the hosts to 4.2, and then
> added the two hosts to the default data center.  At this point, all of the
> running JVM's were visible to the controller, but the vm's do not appear 
> to
> be managed by the controller. I can't migrate them from one host to the
> other, for example.
>
> As near as I can tell,  the next crucial step is to import the
> existing storage domains.
>
> There is no visible way to import an existing storage domain to an
> uninitialized data center (uninitialized data centers are not available to
> the Import Domain button)), so I created a new share on the SAN for a
> bootstrap domain, and am unable to connect to it. The error message given
> by OVirt is "Error while executing action Add Storage Connection:
> Problem while trying to mount target", which is not really information.
>
> Is there a command line tool for importing the existing storage
> domains that will not choke on an uninitialized data center?
>
> Thank you in advance,
>
> On Mon, Oct 29, 2018 at 7:14 AM David Johnson <
> djohn...@maxistechnology.com> wrote:
>
>> Thank you for your generous help.
>>
>> 4.1 wouldn't install because a number of dependencies were pointing
>> to dea