[ovirt-users] Which option is best for storage?

[geoff]

Hi,

Which is the preferred option for connecting oVirt VM farm to SAN/NAS?

NFS (10G), iSCSI (10G) or FC (8G)?

We are confused, some people say iSCSI is preferred and others say NFS performs 
the better than iSCSI, but FC is most expensive but performs the best 
overall

Would value expert opinion.

Cheers
Geoff 
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[ovirt-users] About ovirt guest agent for Linux 6 and 5

[jingjie . jiang]

Hi, 
What the ovirt guest agent packages should be used for Linux 6 and 5?
I found one for Linux 6 at 
http://rpmfind.net/linux/epel/6/x86_64/Packages/o/ovirt-guest-agent-1.0.13-2.el6.noarch.rpm.
What about https://resources.ovirt.org/? Any guest agent package for Linux 6 
and 5 over there?

Thanks,
Jingjie
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[ovirt-users] Replacing Export Domain by Data Domain

[tehnic]

Hello all,

because using an export domain is deprecated i deleted my export domain and use 
now a data domain instead. I used the export domain for complete image backups 
of my production virtual machines. By using now a data domain its even more 
comfortable because i can clone a snapshot directly on my backup data domain.

But there is a (small?) inconvenience:
I cannot "unregister" the cloned snapshot and i dont want to see them all the 
time in the "Virtual Machines" list. For the moment i use a bookmark in the 
"Vms:" filter. After detaching the domain the VMs are away, reattaching brings 
them back for possible "Import VM".

Is there a possibility to set the cloned VM directly to this "unregistered" 
state without detaching and reattaching the complete domain?

Best regards,
Robert
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[ovirt-users] ISCSI Domain & LVM

[tehnic]

Hello all,

i have a question regarding this note in ovirt storage documentation:

**Important:** If you are using block storage and you intend to deploy virtual 
machines on raw devices or direct LUNs and to manage them with the Logical 
Volume Manager, you must create a filter to hide the guest logical volumes. 
This will prevent guest logical volumes from being activated when the host is 
booted, a situation that could lead to stale logical volumes and cause data 
corruption.

What does "you must create a filter to hide the guest logical volumes" exactly 
mean?
I assume i have to set some filter in lvm.conf on all ovirt hosts, but im not 
sure about what to filter?

What i already saw is that after creating the ISCSI domain and 
cloning/moving/creating virtual machines on it there are new PVs and LVs 
visible on the ovirt hosts having an object UUID in the name (output from "pvs" 
and "lvs" commands).
Is this expected behavior or do i have to filter exactly this ones by allowing 
only local disks to be scanned for PVs/LVs?
Or do i have to setup filter to allow only local disks + ISCSI disks (in my 
case /dev/sd?) to be scanned for PVs/LVs?

I noticed too that after detaching and removing the ISCSI domain i still have 
UUID PVs. They all show up with "input/output error" in the output of "pvs" and 
stay there until i reboot the ovirt hosts.

On my ISCSI target system i already set the correct lvm filters so that 
"targetcli" is happy after reboot.

Thank you!

Happy new year,
Robert
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[ovirt-users] Information about un-imported VMs. Delete Request.

[Jacob Green]

I have a Fiber Channel domain, it works, there are some VMs in the 
VM import tab of the domain that I want to remove, I cannot import them, 
because they technically already exsist with a duplicate VMID. Is there 
a way to do this?


Alternatively if I cannot delete the data related the the imports, I 
want to remove the disks attached to these un-imported VM's to free up 
space on my Fiber Channel, is there a way to reliably identify which LVM 
id's belong to those un-imported VMs?



Thank you.


--
Jacob Green

Systems Admin

American Alloy Steel

713-300-5690
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[ovirt-users] Re: novnc in the virtual machine console

[Greg Sheremeta]

On Thu, Jan 3, 2019 at 4:08 AM Michal Skrivanek 
wrote:

>
>
> > On 3 Jan 2019, at 08:34, xil...@126.com wrote:
> >
> > Hello everyone,
> > When I was using novnc in the virtual machine console, I could not see
> the virtual machine content after opening it. Always prompt:
> > Can't connect to websocket proxy server wss://engine.test.com:6100.
> Please check that:
> >websocket proxy service is running,
> >firewalls are properly set,
> >websocket proxy certificate is trusted by your browser. Default CA
> certificate.
> > But my engine websocket agent is running normally, now I do not know the
> reason, please help me check whether there is the same problem
>
> Hi,
> so you checked the first item. Good. Also check that address is
> resolvable/reachable from your client. Also note the other two suggestions:
>   firewalls are properly set,
>   websocket proxy certificate is trusted by your browser. Default CA
> certificate.
>

This might help:
https://ovirt.org/documentation/intro-vm-portal/What_is_the_VM_Portal.html#installing-the-ca-certificate


>
>
> Thanks,
> michal
>
> > Thank you very much !
> > Cheers,
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-- 

GREG SHEREMETA

SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX

Red Hat NA



gsher...@redhat.comIRC: gshereme

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[ovirt-users] Re: VM Portal is currently having some issues

[Greg Sheremeta]

Hi!

Information should be in the browser console. F12 > Console, or
Shift-Ctrl-I, Console
Is there a red stack trace?
If so, paste that along with maybe 20 or so lines above, for context.

Best wishes,
Greg


On Thu, Jan 3, 2019 at 9:02 AM Arnaud DEBEC  wrote:

> Hi,
> When opening the web-ui with the admin@internal user, I get the message
> "Sorry, VM Portal is currently having some issues".
> Back to the admin portal > Events, nothing has been logged. Nothing in
> /var/log/ovirt-engine/ui.log, server.log or engine.log either.
> Any suggestion?
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-- 

GREG SHEREMETA

SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX

Red Hat NA



gsher...@redhat.comIRC: gshereme

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[ovirt-users] VM Portal is currently having some issues

[Arnaud DEBEC]

Hi,
When opening the web-ui with the admin@internal user, I get the message "Sorry, 
VM Portal is currently having some issues".
Back to the admin portal > Events, nothing has been logged. Nothing in 
/var/log/ovirt-engine/ui.log, server.log or engine.log either.
Any suggestion?
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[ovirt-users] Re: Problem with SAN FC and Ovirt 4.2

[Arsène Gschwind]

could you share the output of both command?

On Thu, 2019-01-03 at 07:02 -0300, Sebastian Antunez N. wrote:
Hello
I see with multipath -ll and lsbls but not show the LUN

Regards

Sebas

El jue., 3 ene. 2019 a las 3:57, Arsène Gschwind 
(mailto:arsene.gschw...@unibas.ch>>) escribió:
Hi,

Do you see the LUNs on the Hypervisor using lsblk or multipath -ll ?

rgds,
Arsene
On Wed, 2019-01-02 at 18:25 +, Sebastian Antunez N. wrote:

Hello Guys


I install 6 host with Ovirt 4.2 connected via FC to Brocade 300 switch and HP 
EVA P2000 Storage.


Zoning was performed on each SAN switch and when creating a Virtual Disk with 3 
LUN, but adding the Storage in OVIRT does not see any LUN. The OVIRT nodes were 
restarted, the Engine but still does not see the LUNs


I have searched for information on how to resolve this issue but I have not had 
any information.


I will appreciate your help in this regard as I have not been able to resolve 
the issue.


Thanks to all

Regards


Sebastian

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[ovirt-users] Re: oVirt Node 4.2.5.1 vm stuck on "Powering Down"

[Yedidyah Bar David]

Thanks for the report! :-)

On Wed, Jan 2, 2019 at 4:47 PM maoz zadok  wrote:
>
> Host restart resolve the issue!
>
>
> On Wed, Jan 2, 2019 at 11:50 AM maoz zadok  wrote:
>>
>> Thank you  Didi for the fast reply!
>> The problem was before the restore from backup (that was the reason that I 
>> reboot the engine and the engine didn't come up, I dug a bigger hole :-( ),
>> HA is not marked.  but The VM was trying to migrate from kvm7 to kvm5 before 
>> the engine crashed.
>> I don't see the qemu process on any of the hosts.
>> "vdsm-client Host getVMList fullStatus=True" show the machine uuid only on 
>> one (kvm5)
>>
>> I'll try restarting the host (kvm5), let's see if it helps.
>>
>>
>>
>>
>>
>> On Wed, Jan 2, 2019 at 11:07 AM Yedidyah Bar David  wrote:
>>>
>>> On Wed, Jan 2, 2019 at 10:51 AM maoz zadok  wrote:
>>> >
>>> > Hello,
>>> > vm  stuck (on two hosts)
>>> > I have MySQL VM guest that was stuck in a way that "kill -9" to the MySQL 
>>> > server pid did nothing.
>>> > from the shell I execute "init 0", this did not shut down the VM.
>>> >
>>> > from the ovirt-engine I'm trying to power off the machine, and it is not 
>>> > doing anything.
>>> > the event shows:
>>> >>
>>> >> VDSM kvm5 command DestroyVDS failed: Virtual machine destroy error
>>> >
>>> > and:
>>> >>
>>> >> Failed to power off VM mysql-production (Host: kvm5, User: 
>>> >> admin@internal-authz).
>>> >
>>> >
>>> > Note,  when I list the VM s on the hosts view, I see that that same VM is 
>>> > on two hosts (kvm7 and kvm5).
>>> > It looks like the VM is stuck on two hosts, in the status "Powering Down"
>>> >
>>> > any ideas?
>>>
>>> No idea about this specific problem and how to solve it.
>>>
>>> Is this on the same system you restored from backup? Is this VM marked
>>> as HA (highly-available)? Did it move to a different host since you
>>> took the backup you now restored?
>>>
>>> If all are 'yes', then it's likely that the engine tried to start it
>>> (because it's HA) before it noticed that it's already running on
>>> another host (a fact that it could not know, if it was different from
>>> what's in the restored database). Sadly, this very likely leads to
>>> corruption. See also:
>>>
>>> https://bugzilla.redhat.com/1441322
>>>
>>> Since I do not see 'Resetting HA VM status' in the restore logs you posted,
>>> it might be a different issue, but perhaps similar.
>>>
>>> If indeed you see two qemu processes on the hosts, I'd try to kill -9
>>> both of them.
>>>
>>> Adding Arik.
>>>
>>> Good luck,
>>>
>>>
>>> > Thank you
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>>>
>>>
>>>
>>> --
>>> Didi



-- 
Didi
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[ovirt-users] Re: GlusterFS Storage - Size limited at 2 GB

[v . levet]

Hi,

thanks for helping.

Here gluster vol info: 

Volume Name: GlusterVol
Type: Distributed-Replicate
Volume ID: 22ea3d7d-4435-423a-a06c-504fa9b36ada
Status: Started
Snapshot Count: 0
Number of Bricks: 2 x 4 = 8
Transport-type: tcp
Bricks:
Brick1: 172.31.100.150:/home/admin/ovirt_3/data
Brick2: 172.31.100.151:/home/admin/ovirt_3/data
Brick3: 172.31.100.152:/home/admin/ovirt_3/data
Brick4: 172.31.100.153:/home/admin/ovirt_3/data
Brick5: 172.31.100.154:/home/admin/ovirt_3/data
Brick6: 172.31.100.155:/home/admin/ovirt_3/data
Brick7: 172.31.100.156:/home/admin/ovirt_3/data
Brick8: 172.31.100.157:/home/admin/ovirt_3/data
Options Reconfigured:
features.quota-deem-statfs: on
features.inode-quota: on
features.quota: on
cluster.min-free-inodes: 6%
diagnostics.count-fop-hits: on
diagnostics.latency-measurement: on
network.ping-timeout: 30
cluster.granular-entry-heal: enable
performance.strict-o-direct: on
storage.owner-gid: 36
storage.owner-uid: 36
features.shard: on
cluster.shd-wait-qlength: 1
cluster.shd-max-threads: 8
cluster.locking-scheme: granular
cluster.data-self-heal-algorithm: full
cluster.server-quorum-type: server
cluster.quorum-type: auto
cluster.eager-lock: enable
network.remote-dio: off
performance.low-prio-threads: 32
performance.io-cache: off
performance.read-ahead: off
performance.quick-read: off
auth.allow: *
user.cifs: off
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: off
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[ovirt-users] Re: novnc in the virtual machine console

[Michal Skrivanek]

> On 3 Jan 2019, at 08:34, xil...@126.com wrote:
> 
> Hello everyone,
> When I was using novnc in the virtual machine console, I could not see the 
> virtual machine content after opening it. Always prompt:
> Can't connect to websocket proxy server wss://engine.test.com:6100. Please 
> check that:
>websocket proxy service is running,
>firewalls are properly set,
>websocket proxy certificate is trusted by your browser. Default CA 
> certificate.
> But my engine websocket agent is running normally, now I do not know the 
> reason, please help me check whether there is the same problem

Hi,
so you checked the first item. Good. Also check that address is 
resolvable/reachable from your client. Also note the other two suggestions:
  firewalls are properly set,
  websocket proxy certificate is trusted by your browser. Default CA 
certificate.


Thanks,
michal

> Thank you very much ! 
> Cheers,
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[ovirt-users] Re: Vm console direct connection

[Gianluca Cecchi]

On Thu, Jan 3, 2019 at 8:32 AM Leo David  wrote:

> Thank you very much !
> I will have a look at the python script,  it might do the job as you are
> saying, Greg.
> I've seen this: https://ovirtclient.com/   and it seems to be exactly
> what I need ( especially for running on PI ), but I assume it is a
> commercial solution...
> Maybe wrapping and running the script on PI would make it somehow similar.
> Not sure about the features like vms list, media mount, vm power control,
> usb redirection, how will work...
> It would really be a nice thing to have the thin client running on a
> raspberry pi.
>
> Leo
>
>
In an older post in late 2016 there was a similar question.
See:
https://lists.ovirt.org/pipermail/users/2016-October/077158.html
and replies (also in November)

One of the replies pointed to this github project:
https://github.com/nkovacne/ovirt-desktop-client//

At that time I tested it a bit and seemed working good. It seems it has not
been updated since January 2017
Among the replies there was also the note about User Portal replacement
through web-ui that now is reality, although still based on web browsing
functionality.

Gianluca
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