[ovirt-users] Re: EqualLogic SAN controller switchover

[Daniel Rix]

I run ovirt in my homelab, and have an Equallogic PS6000.

I did this the other week, and it took about 8 to 10 minutes for the VMs 
to start coming back. I run my engine off of the SAN, and it had some 
trouble coming back because ovirt was in a lease lock situation.


The engine VMs did pause, but the switchover took too long and it killed 
it. The other HA VMs were just killed and restarted after the storage 
issue. It did sort itself out, but the equallogic took its time to do 
the controller switchover.



On 2/27/2020 11:55 AM, Chris Adams wrote:

Once upon a time, Strahil Nikolov  said:

Do you have  an idea  how long will it take  ?

No, it has been years and years since I had to do a switchover on an
EqualLogic (they mostly just run).  I know I've read of others using
EqualLogic's for oVirt, so I'm hoping for someone who's experienced a
switchover...


Keep in mind that in case  the domain is declared  unavailable  (reached  a  
threshold , which I doesn't know)  ,  all VMs using it will be paused and oVirt 
 will try to recover them once the storage is back available.

Right - with the hosted engine on the SAN, I am also curious how that is
impacted (how will the engine HA tooling handle a pause).

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[ovirt-users] Re: Ovirt API and CLI

[Yedidyah Bar David]

Hi all,

On Fri, Feb 28, 2020 at 9:36 PM Eugène Ngontang  wrote:
>
> AHAH Dereck, thx for googling,
>
> I knew I could google it, that's not an expert stuff, nevertheless as you 
> seemed to be aware of the SDK subject I was wondering if you have links you 
> find yourself useful (even from google), so that I can dive into them.

I'll partially repeat what I wrote before, but include links, just to make sure:

I highly encourage you (and everyone) to have a look at:

https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk/examples

https://github.com/oVirt/ovirt-ansible/tree/master/examples

>
> Thx.
> Eugène NG
>
> Le ven. 28 févr. 2020 à 19:54, Derek Atkins  a écrit :
>>
>> Hi,
>>
>> It took me about 5 seconds to google for "ovirt sdk4" and the first link
>> is:  https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk
>>
>> NB: I am not an ovirt dev (nor am I a python programmer, although I do
>> play one on TV sometimes ;-).
>>
>> -derek
>>
>> On Fri, February 28, 2020 1:12 pm, Eugène Ngontang wrote:
>> > Yes I know ovirt-shell.
>> >
>> > But if the Interface (API) is well exposed, we could ourself code add-hoc
>> > client to interact with, as we know how it's defined and structured.
>> >
>> > Please do you have useful links about those SDK4 and others API/CLI
>> > related
>> > stuff?
>> >
>> > Regards,
>> > Eugène NG
>> >
>> > Le ven. 28 févr. 2020 à 16:50, Derek Atkins  a écrit :
>> >
>> >> Yes.  The devs call it "SDK4", which has been around for a few releases
>> >> now.
>> >> The CLI, however, uses SDK3, which was removed from Ovirt 4.4.
>> >> Search for "ovirt-shell".
>> >>
>> >> -derek
>> >>
>> >> On Fri, February 28, 2020 10:47 am, Eugène Ngontang wrote:
>> >> > @Derek,
>> >> >
>> >> > You're talking about a client the should up-port, but before having a
>> >> > client, my question is is there a documented API (server) to interact
>> >> with
>> >> > through that client?
>> >> >
>> >> > Eugene NG
>> >> >
>> >> > Le jeu. 27 févr. 2020 à 14:57, Derek Atkins  a écrit
>> >> :
>> >> >
>> >> >> Eugene,
>> >> >>
>> >> >> On Thu, February 27, 2020 4:53 am, Eugène Ngontang wrote:
>> >> >> > Yes Ansible ovirt_vms module is useful, I use it for
>> >> >> > provisioning/deployment, but once my VM created, I'd like to
>> >> >> > administrate/interact with them, I don't think I should write
>> >> >> playbooks
>> >> >> > for
>> >> >> > that.
>> >> >> >
>> >> >> > But I'll find a solution.
>> >> >>
>> >> >> I am in a similar boat as you.  I wrote some management scripts
>> >> around
>> >> >> ovirt-shell when I first started using ovirt (4.0), in order to mimic
>> >> >> some
>> >> >> vmware-server features that I needed.  I run a single-host
>> >> hosted-engine
>> >> >> environment, so when the system boots up (e.g. from a power failure)
>> >> I
>> >> >> wanted all my VMs to auto-start, and to start in the correct order.
>> >> I
>> >> >> can't use the ovirt power management utilities because it's only a
>> >> >> single
>> >> >> host.  So I wrote a relatively small script around ovirt-shell that
>> >> >> would
>> >> >> do the following:
>> >> >>
>> >> >> 1) Wait for the engine to respond
>> >> >> 2) Wait for the storage to come online
>> >> >> 3) Start my VMs, with appropriate order and delay between
>> >> >>(e.g., ensure my DNS server and KDC come up before other VMs)
>> >> >>
>> >> >> I know that SOME of these features are now in Ovirt (and I think they
>> >> >> are
>> >> >> even in 4.4), but my understanding is that they only return the
>> >> system
>> >> >> to
>> >> >> previous state and wont auto-start a VM that was cleanly shut down.
>> >> >> Also
>> >> >> the ordering is, IIUC, somewhat course (low/medium/high).
>> >> >>
>> >> >> At this point I plan to delay my deployment of 4.4 or beyond because
>> >> >> what
>> >> >> I have in 4.3 is working (still), and frankly I have no interest in
>> >> >> learning Ansible or Python just to replace what should be a
>> >> relatively
>> >> >> simple script.
>> >> >>
>> >> >> I honestly find it very sad that the developers wont up-port
>> >> >> ovirt-client
>> >> >> to SDK4.  If SDK4 is "so good" vs SDK3 then I don't see why it would
>> >> be
>> >> >> hard to do that.  And if it IS that hard to do, then how do they
>> >> expect
>> >> >> us
>> >> >> to use it?

That's not the point. I was not part of the decision to drop ovirt-shell, but
think it made sense. If you need to do complex stuff with it, you practically
spend time on learning a new language, which is oVirt-specific, and so won't
be useful for you for anything else you might do in the future. If you instead
spend time on learning either python or ansible, you learn languages that are
useful for other things you might want to automate. I think both of them suite
very well the "sysadmin sometimes playing a developer" role.

(I played that role myself for ~ 15 years, before joining Red Hat as a "real"
developer, so speak from experience...)

If you miss ovirt-shell itself (I guess mainly because for very 

[ovirt-users] Re: Windows deployment

[Mathieu Simon]

Hi

> If someone had Red Hat signed drivers from Red Hat Virtualization it may 
> work, other wise I think it's a futile effort.
Hmm, though I don't think Red Hat will particularly like it, but when
it comes to just the drivers, not the full ISO with the RHV/oVirt
guest agents there might be a way.
You can get a free developer subscription of RHEL (8) and then
download the virtio-win package. These contain WHQL drivers with a
valid signature.

I haven't had the ability to test it but I've checked the signature. I
hope that this helps you a bit.

Regards
Mathieu
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[ovirt-users] Re: subnets

[eevans]

When I attach a vnic to  a vm and try to start it I get the following message:

 

*   Cannot run VM. There is no host that satisfies current scheduling 
constraints. See below for details:
*   The host kvm04 did not satisfy internal filter Network because there 
are no free virtual functions which are suitable for virtual nic(s) nic3. A 
virtual function is considered as suitable if the VF's configuration of its 
physical function contains the virtual nic's network/network label.
*   The host kvm02 did not satisfy internal filter Network because there 
are no free virtual functions which are suitable for virtual nic(s) nic3. A 
virtual function is considered as suitable if the VF's configuration of its 
physical function contains the virtual nic's network/network label.
*   The host kvm01 did not satisfy internal filter VmToHostsAffinityGroups 
because it did not match positive affinity rules .

I am new to ovirt and never had an issue with kvm hypervisor.

 

Eric Evans

Digital Data Services LLC.

304.660.9080



 

From: Alex K  
Sent: Saturday, February 29, 2020 2:48 PM
To: eev...@digitaldatatechs.com
Cc: users 
Subject: [ovirt-users] Re: subnets

 

 

On Sat, Feb 29, 2020, 18:38 mailto:eev...@digitaldatatechs.com> > wrote:

I have a network in place with several subnets, one for iscsi and one for 
virtual pbx and VoIP phones. I use the iscsi in Ovirt, but I cannot get Ovirt 
to recognize and use the physical vlan 3 network for phones. If I add it and 
the subnet, Ovirt will make give it an IP, but it's an isolated network with no 
connectivity to the other vm's or the Internet. 

You will need to attach a vm to a network in order the vm to have access to the 
specific network. This should be straightforward from web gui.

I have read several topics on this but I can't get it to work properly.
Any help would be appreciated.
Thanks.
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[ovirt-users] Re: subnets

[eevans]

I have all 3 hosts attached through physical nics to the vlan. When I attach a 
vm, it is isolated…cannot ping anything and doesn’t use the dchp server for the 
network.

 

Eric Evans

Digital Data Services LLC.

304.660.9080



 

From: Alex K  
Sent: Saturday, February 29, 2020 2:48 PM
To: eev...@digitaldatatechs.com
Cc: users 
Subject: Re: [ovirt-users] subnets

 

 

On Sat, Feb 29, 2020, 18:38 mailto:eev...@digitaldatatechs.com> > wrote:

I have a network in place with several subnets, one for iscsi and one for 
virtual pbx and VoIP phones. I use the iscsi in Ovirt, but I cannot get Ovirt 
to recognize and use the physical vlan 3 network for phones. If I add it and 
the subnet, Ovirt will make give it an IP, but it's an isolated network with no 
connectivity to the other vm's or the Internet. 

You will need to attach a vm to a network in order the vm to have access to the 
specific network. This should be straightforward from web gui.

I have read several topics on this but I can't get it to work properly.
Any help would be appreciated.
Thanks.
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[ovirt-users] Re: subnets

[Alex K]

On Sat, Feb 29, 2020, 18:38  wrote:

> I have a network in place with several subnets, one for iscsi and one for
> virtual pbx and VoIP phones. I use the iscsi in Ovirt, but I cannot get
> Ovirt to recognize and use the physical vlan 3 network for phones. If I add
> it and the subnet, Ovirt will make give it an IP, but it's an isolated
> network with no connectivity to the other vm's or the Internet.
>
You will need to attach a vm to a network in order the vm to have access to
the specific network. This should be straightforward from web gui.

> I have read several topics on this but I can't get it to work properly.
> Any help would be appreciated.
> Thanks.
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[ovirt-users] subnets

[eevans]

I have a network in place with several subnets, one for iscsi and one for 
virtual pbx and VoIP phones. I use the iscsi in Ovirt, but I cannot get Ovirt 
to recognize and use the physical vlan 3 network for phones. If I add it and 
the subnet, Ovirt will make give it an IP, but it's an isolated network with no 
connectivity to the other vm's or the Internet. 
I have read several topics on this but I can't get it to work properly.
Any help would be appreciated.
Thanks.
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[ovirt-users] Re: Windows deployment

[eevans]

I tried to bare metal provision Server 2016 into an ovirt vm. After much 
research I learned sine the ovirt drivers are not WHQL Windows Deployment 
Server will not use them. It gets an IP from the pxe boot and gets to a point 
that says starting setup, then I get the error. I loaded Server 2016, resealed 
with sysprep and created a template. I think this will be the easiest solution 
going forward.
Inside WDS I can load the drivers for the install.
I think this is futile unless I can get signed drivers from ovirt and that's 
not a possibility.
If someone had Red Hat signed drivers from Red Hat Virtualization it may work, 
other wise I think it's a futile effort.
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[ovirt-users] Re: Hyperconverged setup questions

[Jayme]

I think you may be misinterpreting hci. Even though the hosts are used for
storage it’s still not technically local storage as the hosts are acting as
clients and are mounting the gluster storage.. so storage is still over
network.

You can get better gluster performance if you switch To libgfapi however
it’s not a default option and has some known issues. I also read in a it
report recently that redhat doesn’t plan to implement it because the
performance improvements aren’t great, although many ovirt users on this
group seem to have seen a performance boost after switching to libgfapi.

If io performance is your main concern I’m not sure if gluster is the
answer. There are likely some others on this group who have more real world
experience with various environments and could give you more comparisons.

On Sat, Feb 29, 2020 at 8:22 AM Vrgotic, Marko 
wrote:

> Hi Strahil , Leo and Jayme,
>
>
>
> This thread is getting more and more useful, great.
>
>
>
> Atm, I have 15 nodes cluster with shared Storage from Netapp. The storage
> network is (NFS4.1) on 20GB LACP, separated from control.
>
> Performance is generally great, except in several test cases when using
> "send next data after write confirm". This situation does not care about
> speed of network, kernel buffers or any other buffers, but only about
> storage server speed, and then we hit the speed issue.
>
>
>
> The main reason why I am asking for HCI, is to get as close as possible to
> Local Storage speed with multiple hosts in same cluster.
>
> The idea is to add HCI to current setup, as second cluster, utilizing CPU
> RAM and LocalStorage of joined nodes.
>
> --Is this actually a direction which will get me to the wanted result, or
> am I misunderstanding purpose of HCI?
>
>
>
> I understand that the HCI with SHE requires replica2+arbiter or replica3,
> but that is not my situation. I wish only to add HCI for reasons above.
>
> --Do I need the distributed-replicated in that case, or I can simply use
> distributed (if still supported) setup?
>
>
>
> Jayme, I do have resources to set this up in a staged environment, and I
> will be happy to share the info, but first I need to find out if I am at
> all moving in right direction.
>
>
>
> Kindly awaiting your reply.
>
>
>
>
>
> -
>
> kind regards/met vriendelijke groeten
>
> Marko Vrgotic
>
> Sr. System Engineer @ System Administration
>
>
>
> ActiveVideo
>
> e: m.vrgo...@activevideo.com
>
> w: www.activevideo.com 
>
> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217
> WJ Hilversum, The Netherlands. The information contained in this message
> may be legally privileged and confidential. It is intended to be read only
> by the individual or entity to whom it is addressed or by their designee.
> If the reader of this message is not the intended recipient, you are on
> notice that any distribution of this message, in any form, is strictly
> prohibited.  If you have received this message in error, please immediately
> notify the sender and/or ActiveVideo Networks, LLC by telephone at +1
> 408.931.9200 and delete or destroy any copy of this message.
>
>
>
>
>
> On 29/02/2020, 11:53, "Strahil Nikolov"  wrote:
>
>
>
> On February 29, 2020 11:19:30 AM GMT+02:00, Jayme 
> wrote:
>
> >I currently have a three host hci in rep 3 (no arbiter). 10gbe network
>
> >and
>
> >ssds making up the bricks. I’ve wondered what the result of adding
>
> >three
>
> >more nodes to expand hci would be. Is there an overall storage
>
> >performance
>
> >increase when gluster is expanded like this?
>
> >
>
> >On Sat, Feb 29, 2020 at 4:26 AM Leo David  wrote:
>
> >
>
> >> Hi,
>
> >> As a first setup, you can go with a 3 nodes HCI and having the data
>
> >volume
>
> >> in a replica 3 setup.
>
> >> Afterwards, if you want to expand HCI ( compute and storage too) you
>
> >can
>
> >> add sets of 3  nodes, and the data volume will automatically become
>
> >> replicated-distributed. Safely, you can add sets of 3 nodes up to 12
>
> >nodes
>
> >> per HCI.
>
> >> You can also add "compute only nodes" and not extending storage too.
>
> >This
>
> >> can be done by adding nodes one by one.
>
> >> As an example, I have an implementation where are 3 hyperconverged
>
> >nodes,
>
> >> they form a replica 3 volume, and later i have added the 4th node to
>
> >the
>
> >> cluster which only adds ram and cpu, whilts consuming storage from
>
> >the
>
> >> existing 3 nodes based volume.
>
> >> Hope this helps.
>
> >> Cheers,
>
> >>
>
> >> Leo
>
> >>
>
> >>
>
> >> On Fri, Feb 28, 2020, 15:25 Vrgotic, Marko
>
> >
>
> >> wrote:
>
> >>
>
> >>> Hi Strahil,
>
> >>>
>
> >>>
>
> >>>
>
> >>> I circled back on your reply while ago regarding oVirt
>
> >Hyperconverged and
>
> >>> more than 3 nodes in cluster:
>
> >>>

[ovirt-users] Re: Hyperconverged setup questions

[Vrgotic, Marko]

Hi Strahil , Leo and Jayme,



This thread is getting more and more useful, great.



Atm, I have 15 nodes cluster with shared Storage from Netapp. The storage 
network is (NFS4.1) on 20GB LACP, separated from control.

Performance is generally great, except in several test cases when using "send 
next data after write confirm". This situation does not care about speed of 
network, kernel buffers or any other buffers, but only about storage server 
speed, and then we hit the speed issue.



The main reason why I am asking for HCI, is to get as close as possible to 
Local Storage speed with multiple hosts in same cluster.

The idea is to add HCI to current setup, as second cluster, utilizing CPU RAM 
and LocalStorage of joined nodes.

--Is this actually a direction which will get me to the wanted result, or am I 
misunderstanding purpose of HCI?



I understand that the HCI with SHE requires replica2+arbiter or replica3, but 
that is not my situation. I wish only to add HCI for reasons above.

--Do I need the distributed-replicated in that case, or I can simply use 
distributed (if still supported) setup?



Jayme, I do have resources to set this up in a staged environment, and I will 
be happy to share the info, but first I need to find out if I am at all moving 
in right direction.



Kindly awaiting your reply.





-

kind regards/met vriendelijke groeten

Marko Vrgotic

Sr. System Engineer @ System Administration



ActiveVideo

e: m.vrgo...@activevideo.com

w: www.activevideo.com 

ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ 
Hilversum, The Netherlands. The information contained in this message may be 
legally privileged and confidential. It is intended to be read only by the 
individual or entity to whom it is addressed or by their designee. If the 
reader of this message is not the intended recipient, you are on notice that 
any distribution of this message, in any form, is strictly prohibited.  If you 
have received this message in error, please immediately notify the sender 
and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or 
destroy any copy of this message.





On 29/02/2020, 11:53, "Strahil Nikolov"  wrote:



On February 29, 2020 11:19:30 AM GMT+02:00, Jayme  wrote:

>I currently have a three host hci in rep 3 (no arbiter). 10gbe network

>and

>ssds making up the bricks. I’ve wondered what the result of adding

>three

>more nodes to expand hci would be. Is there an overall storage

>performance

>increase when gluster is expanded like this?

>

>On Sat, Feb 29, 2020 at 4:26 AM Leo David  wrote:

>

>> Hi,

>> As a first setup, you can go with a 3 nodes HCI and having the data

>volume

>> in a replica 3 setup.

>> Afterwards, if you want to expand HCI ( compute and storage too) you

>can

>> add sets of 3  nodes, and the data volume will automatically become

>> replicated-distributed. Safely, you can add sets of 3 nodes up to 12

>nodes

>> per HCI.

>> You can also add "compute only nodes" and not extending storage too.

>This

>> can be done by adding nodes one by one.

>> As an example, I have an implementation where are 3 hyperconverged

>nodes,

>> they form a replica 3 volume, and later i have added the 4th node to

>the

>> cluster which only adds ram and cpu, whilts consuming storage from

>the

>> existing 3 nodes based volume.

>> Hope this helps.

>> Cheers,

>>

>> Leo

>>

>>

>> On Fri, Feb 28, 2020, 15:25 Vrgotic, Marko

>

>> wrote:

>>

>>> Hi Strahil,

>>>

>>>

>>>

>>> I circled back on your reply while ago regarding oVirt

>Hyperconverged and

>>> more than 3 nodes in cluster:

>>>

>>>

>>>

>>> “Hi Marko, I guess  you can use distributed-replicated volumes  and

>>> oVirt  cluster with host triplets.”

>>>

>>> Initially I understood that its limited to 3Nodes max per HC

>cluster, but

>>> now reading documentation further

>>>


>https://www.ovirt.org/documentation/gluster-hyperconverged/chap-Maintenance_and_Upgrading_Resources.html

>>> that does not look like it.

>>>

>>>

>>>

>>> Would you be so kind to give me an example or clarify what you meant

>by “*you

>>> can use distributed-replicated volumes  and oVirt  cluster with host

>>> triplets.*” ?

>>>

>>>

>>>

>>> Kindly awaiting your reply.

>>>

>>>

>>>

>>>

>>>

>>> -

>>>

>>> kind regards/met vriendelijke groeten

>>>

>>>

>>>

>>> Marko Vrgotic

>>> ActiveVideo

>>>

>>>

>>>

>>>

>>>

>>>

>>>

>>> *From: *"Vrgotic, Marko" 

>>> *Date: *Friday, 11 October 2019 at 08:49

>>> *To: *Strahil 

>>> *Cc: *users 

>>> *Subject: 

[ovirt-users] Re: Hyperconverged setup questions

[Strahil Nikolov]

On February 29, 2020 11:19:30 AM GMT+02:00, Jayme  wrote:
>I currently have a three host hci in rep 3 (no arbiter). 10gbe network
>and
>ssds making up the bricks. I’ve wondered what the result of adding
>three
>more nodes to expand hci would be. Is there an overall storage
>performance
>increase when gluster is expanded like this?
>
>On Sat, Feb 29, 2020 at 4:26 AM Leo David  wrote:
>
>> Hi,
>> As a first setup, you can go with a 3 nodes HCI and having the data
>volume
>> in a replica 3 setup.
>> Afterwards, if you want to expand HCI ( compute and storage too) you
>can
>> add sets of 3  nodes, and the data volume will automatically become
>> replicated-distributed. Safely, you can add sets of 3 nodes up to 12
>nodes
>> per HCI.
>> You can also add "compute only nodes" and not extending storage too.
>This
>> can be done by adding nodes one by one.
>> As an example, I have an implementation where are 3 hyperconverged
>nodes,
>> they form a replica 3 volume, and later i have added the 4th node to
>the
>> cluster which only adds ram and cpu, whilts consuming storage from
>the
>> existing 3 nodes based volume.
>> Hope this helps.
>> Cheers,
>>
>> Leo
>>
>>
>> On Fri, Feb 28, 2020, 15:25 Vrgotic, Marko
>
>> wrote:
>>
>>> Hi Strahil,
>>>
>>>
>>>
>>> I circled back on your reply while ago regarding oVirt
>Hyperconverged and
>>> more than 3 nodes in cluster:
>>>
>>>
>>>
>>> “Hi Marko, I guess  you can use distributed-replicated volumes  and
>>> oVirt  cluster with host triplets.”
>>>
>>> Initially I understood that its limited to 3Nodes max per HC
>cluster, but
>>> now reading documentation further
>>>
>https://www.ovirt.org/documentation/gluster-hyperconverged/chap-Maintenance_and_Upgrading_Resources.html
>>> that does not look like it.
>>>
>>>
>>>
>>> Would you be so kind to give me an example or clarify what you meant
>by “*you
>>> can use distributed-replicated volumes  and oVirt  cluster with host
>>> triplets.*” ?
>>>
>>>
>>>
>>> Kindly awaiting your reply.
>>>
>>>
>>>
>>>
>>>
>>> -
>>>
>>> kind regards/met vriendelijke groeten
>>>
>>>
>>>
>>> Marko Vrgotic
>>> ActiveVideo
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *From: *"Vrgotic, Marko" 
>>> *Date: *Friday, 11 October 2019 at 08:49
>>> *To: *Strahil 
>>> *Cc: *users 
>>> *Subject: *Re: [ovirt-users] Hyperconverged setup questions
>>>
>>>
>>>
>>> Hi Strahil,
>>>
>>>
>>>
>>> Thank you.
>>>
>>> One maybe stupid question, but significant to me:
>>>
>>> Considering i haven’t been playing before with hyperconverged setup
>in
>>> oVirt, is this something i can do from ui cockpit or does it require
>me
>>> first setup an Glusterfs on the Hosts before doing anything via
>oVirt API
>>> or Web interface?
>>>
>>>
>>>
>>> Kindly awaiting your reply.
>>>
>>>
>>>
>>> Marko
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>>
>>>
>>> On 11 Oct 2019, at 06:14, Strahil  wrote:
>>>
>>> Hi Marko,
>>>
>>> I guess  you can use distributed-replicated volumes  and oVirt 
>cluster
>>> with host triplets.
>>>
>>> Best Regards,
>>> Strahil Nikolov
>>>
>>> On Oct 10, 2019 15:30, "Vrgotic, Marko" 
>>> wrote:
>>>
>>> Dear oVirt,
>>>
>>>
>>>
>>> Is it possible to add oVirt 3Hosts/Gluster hyperconverged cluster to
>>> existing oVirt setup? I need this to achieve Local storage
>performance, but
>>> still have pool of Hypevisors available.
>>>
>>> Is it possible to have more than 3Hosts in Hyperconverged setup?
>>>
>>>
>>>
>>> I have currently 1Shared Cluster (NFS based storage, where also SHE
>is
>>> hosted) and 2Local Storage clusters.
>>>
>>>
>>>
>>> oVirt current version running is 4.3.4.
>>>
>>>
>>>
>>> Kindly awaiting your reply.
>>>
>>>
>>>
>>>
>>>
>>> — — —
>>> Met vriendelijke groet / Kind regards,
>>>
>>> *Marko Vrgotic*
>>>
>>> *ActiveVideo*
>>>
>>>
>>>
>>>
>>>
>>> ___
>>> Users mailing list -- users@ovirt.org
>>> To unsubscribe send an email to users-le...@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/UH2FDN57V2TOQXD36UQXVTVCTB37O4OE/
>>>
>> ___
>> Users mailing list -- users@ovirt.org
>> To unsubscribe send an email to users-le...@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/CJ5IAHCMNU3KSYUR3MCD2NNJTDEIHRNX/
>>

Hi Jayme,

As this is a distributed-replicated  (or maybe the term is the opposite  -  it 
doesn't matter) with shard option enabled - the VM disk will be spread on all 
bricks and I expect faster  reads and even a little bit faster  writes  (as  1  
shard can go to first replica set, while  another 1 can go to the second 
replica set).

The  problem you can hit is that if a whole replica  set 

[ovirt-users] Re: Hyperconverged setup questions

[Jayme]

I currently have a three host hci in rep 3 (no arbiter). 10gbe network and
ssds making up the bricks. I’ve wondered what the result of adding three
more nodes to expand hci would be. Is there an overall storage performance
increase when gluster is expanded like this?

On Sat, Feb 29, 2020 at 4:26 AM Leo David  wrote:

> Hi,
> As a first setup, you can go with a 3 nodes HCI and having the data volume
> in a replica 3 setup.
> Afterwards, if you want to expand HCI ( compute and storage too) you can
> add sets of 3  nodes, and the data volume will automatically become
> replicated-distributed. Safely, you can add sets of 3 nodes up to 12 nodes
> per HCI.
> You can also add "compute only nodes" and not extending storage too. This
> can be done by adding nodes one by one.
> As an example, I have an implementation where are 3 hyperconverged nodes,
> they form a replica 3 volume, and later i have added the 4th node to the
> cluster which only adds ram and cpu, whilts consuming storage from the
> existing 3 nodes based volume.
> Hope this helps.
> Cheers,
>
> Leo
>
>
> On Fri, Feb 28, 2020, 15:25 Vrgotic, Marko 
> wrote:
>
>> Hi Strahil,
>>
>>
>>
>> I circled back on your reply while ago regarding oVirt Hyperconverged and
>> more than 3 nodes in cluster:
>>
>>
>>
>> “Hi Marko, I guess  you can use distributed-replicated volumes  and
>> oVirt  cluster with host triplets.”
>>
>> Initially I understood that its limited to 3Nodes max per HC cluster, but
>> now reading documentation further
>> https://www.ovirt.org/documentation/gluster-hyperconverged/chap-Maintenance_and_Upgrading_Resources.html
>> that does not look like it.
>>
>>
>>
>> Would you be so kind to give me an example or clarify what you meant by “*you
>> can use distributed-replicated volumes  and oVirt  cluster with host
>> triplets.*” ?
>>
>>
>>
>> Kindly awaiting your reply.
>>
>>
>>
>>
>>
>> -
>>
>> kind regards/met vriendelijke groeten
>>
>>
>>
>> Marko Vrgotic
>> ActiveVideo
>>
>>
>>
>>
>>
>>
>>
>> *From: *"Vrgotic, Marko" 
>> *Date: *Friday, 11 October 2019 at 08:49
>> *To: *Strahil 
>> *Cc: *users 
>> *Subject: *Re: [ovirt-users] Hyperconverged setup questions
>>
>>
>>
>> Hi Strahil,
>>
>>
>>
>> Thank you.
>>
>> One maybe stupid question, but significant to me:
>>
>> Considering i haven’t been playing before with hyperconverged setup in
>> oVirt, is this something i can do from ui cockpit or does it require me
>> first setup an Glusterfs on the Hosts before doing anything via oVirt API
>> or Web interface?
>>
>>
>>
>> Kindly awaiting your reply.
>>
>>
>>
>> Marko
>>
>>
>>
>> Sent from my iPhone
>>
>>
>>
>> On 11 Oct 2019, at 06:14, Strahil  wrote:
>>
>> Hi Marko,
>>
>> I guess  you can use distributed-replicated volumes  and oVirt  cluster
>> with host triplets.
>>
>> Best Regards,
>> Strahil Nikolov
>>
>> On Oct 10, 2019 15:30, "Vrgotic, Marko" 
>> wrote:
>>
>> Dear oVirt,
>>
>>
>>
>> Is it possible to add oVirt 3Hosts/Gluster hyperconverged cluster to
>> existing oVirt setup? I need this to achieve Local storage performance, but
>> still have pool of Hypevisors available.
>>
>> Is it possible to have more than 3Hosts in Hyperconverged setup?
>>
>>
>>
>> I have currently 1Shared Cluster (NFS based storage, where also SHE is
>> hosted) and 2Local Storage clusters.
>>
>>
>>
>> oVirt current version running is 4.3.4.
>>
>>
>>
>> Kindly awaiting your reply.
>>
>>
>>
>>
>>
>> — — —
>> Met vriendelijke groet / Kind regards,
>>
>> *Marko Vrgotic*
>>
>> *ActiveVideo*
>>
>>
>>
>>
>>
>> ___
>> Users mailing list -- users@ovirt.org
>> To unsubscribe send an email to users-le...@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/UH2FDN57V2TOQXD36UQXVTVCTB37O4OE/
>>
> ___
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> Privacy Statement: https://www.ovirt.org/site/privacy-policy/
> oVirt Code of Conduct:
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>
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[ovirt-users] Re: Hyperconverged setup questions

[Leo David]

Hi,
As a first setup, you can go with a 3 nodes HCI and having the data volume
in a replica 3 setup.
Afterwards, if you want to expand HCI ( compute and storage too) you can
add sets of 3  nodes, and the data volume will automatically become
replicated-distributed. Safely, you can add sets of 3 nodes up to 12 nodes
per HCI.
You can also add "compute only nodes" and not extending storage too. This
can be done by adding nodes one by one.
As an example, I have an implementation where are 3 hyperconverged nodes,
they form a replica 3 volume, and later i have added the 4th node to the
cluster which only adds ram and cpu, whilts consuming storage from the
existing 3 nodes based volume.
Hope this helps.
Cheers,

Leo


On Fri, Feb 28, 2020, 15:25 Vrgotic, Marko 
wrote:

> Hi Strahil,
>
>
>
> I circled back on your reply while ago regarding oVirt Hyperconverged and
> more than 3 nodes in cluster:
>
>
>
> “Hi Marko, I guess  you can use distributed-replicated volumes  and
> oVirt  cluster with host triplets.”
>
> Initially I understood that its limited to 3Nodes max per HC cluster, but
> now reading documentation further
> https://www.ovirt.org/documentation/gluster-hyperconverged/chap-Maintenance_and_Upgrading_Resources.html
> that does not look like it.
>
>
>
> Would you be so kind to give me an example or clarify what you meant by “*you
> can use distributed-replicated volumes  and oVirt  cluster with host
> triplets.*” ?
>
>
>
> Kindly awaiting your reply.
>
>
>
>
>
> -
>
> kind regards/met vriendelijke groeten
>
>
>
> Marko Vrgotic
> ActiveVideo
>
>
>
>
>
>
>
> *From: *"Vrgotic, Marko" 
> *Date: *Friday, 11 October 2019 at 08:49
> *To: *Strahil 
> *Cc: *users 
> *Subject: *Re: [ovirt-users] Hyperconverged setup questions
>
>
>
> Hi Strahil,
>
>
>
> Thank you.
>
> One maybe stupid question, but significant to me:
>
> Considering i haven’t been playing before with hyperconverged setup in
> oVirt, is this something i can do from ui cockpit or does it require me
> first setup an Glusterfs on the Hosts before doing anything via oVirt API
> or Web interface?
>
>
>
> Kindly awaiting your reply.
>
>
>
> Marko
>
>
>
> Sent from my iPhone
>
>
>
> On 11 Oct 2019, at 06:14, Strahil  wrote:
>
> Hi Marko,
>
> I guess  you can use distributed-replicated volumes  and oVirt  cluster
> with host triplets.
>
> Best Regards,
> Strahil Nikolov
>
> On Oct 10, 2019 15:30, "Vrgotic, Marko"  wrote:
>
> Dear oVirt,
>
>
>
> Is it possible to add oVirt 3Hosts/Gluster hyperconverged cluster to
> existing oVirt setup? I need this to achieve Local storage performance, but
> still have pool of Hypevisors available.
>
> Is it possible to have more than 3Hosts in Hyperconverged setup?
>
>
>
> I have currently 1Shared Cluster (NFS based storage, where also SHE is
> hosted) and 2Local Storage clusters.
>
>
>
> oVirt current version running is 4.3.4.
>
>
>
> Kindly awaiting your reply.
>
>
>
>
>
> — — —
> Met vriendelijke groet / Kind regards,
>
> *Marko Vrgotic*
>
> *ActiveVideo*
>
>
>
>
>
> ___
> Users mailing list -- users@ovirt.org
> To unsubscribe send an email to users-le...@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/UH2FDN57V2TOQXD36UQXVTVCTB37O4OE/
>
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