[ovirt-users] [ANN] oVirt Engine 4.3.6 async update is now available

2019-10-07 Thread Sandro Bonazzola 
The oVirt Team has just released a new version of ovirt-engine package that
fixes a few high severity bugs:
 - [BZ 1755869 ] ovirt-engine throws
an exception when trying to access VMs which have snapshots from
unsupported compatibility levels
 - [BZ 1757782 ] Deleting a Single
snapshot disk live merge 'REDUCE_IMAGE' step fails with NPE and snapshot
disk remains in illegal state
 - [BZ 1758052 ] Create VM rollback
fails with NPE leaving VM locked - Exception in invoking callback of
command AddVmFromTemplate- Exception:
javax.ejb.EJBTransactionRolledbackException

We recommend to update ovirt-engine in order to avoid these issues.

Thanks,

-- 

Sandro Bonazzola

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA 

sbona...@redhat.com
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[ovirt-users] Re: Thin pool best proctices

2019-10-07 Thread Oliver Riesener 
Hi Jeremy,
thanks for sharing your experience here.

I am not a lvmthin expert, but in the past the
**fstrim** command works fine for my needs.

See "Using fstrim to increase free space in a thin pool LV“
- http://man7.org/linux/man-pages/man7/lvmthin.7.html 


Best regards, Oliver
  

> Am 07.10.2019 um 21:32 schrieb jeremy_tourvi...@hotmail.com:
> 
> After a week of downtime from a thin pool that had 100% full metadata I 
> decided to rebuild my single node.  My post was formerly titled: Ovirt 4.2.7 
> won't start and drops to emergency console.  I have backups of nearly all my 
> VMs and I am working on importing them.  I went from version 4.2.7.1 to 
> 4.3.6.  I am comfortable with LVM but I am new to administering thin pool 
> LVM.  I am asking myself what can I do to avoid this headache in the future?  
> What practical steps should I take?
> -Regular backups
> -Monitoring
> -Proper configuration
> 
> It's the last one that is the most difficult for me.  You don't know what you 
> don't know Can anyone share tips and advice?
> 
> I learned that /etc/LVM has backups.  It should be part of the backup 
> strategy.  I now know that thin pools have a special metadata volume that 
> should be monitored for disk space.
> 
> At the time I built the system I used the gedploy gluster config file.  I had 
> assumed the values in there were "safe".  As I found out the hard way, 
> reality proved otherwise.  I was reading elsewhere about allowing the thin 
> volume to grow 20% as needed but no real mention of how to do that or a good 
> example.  As I understand it, the config to make that happen exists in 
> lvm.conf.  Is that right?
> 
> Have there been any changes in Ansible GlusterFS setup  since 4.2.7 to choose 
> different "safe" values with newer versions?  
> 
> I hope my comments won't be taken as critical by any Dev Team members 
> regarding Ansible.  My sole intent for this post is so I learn what to do 
> better/right next time.  I do have most of my VMs and the few I lost are not 
> critical.  It was lucky that I learned a hard lesson the easy way.
> 
> Thanks for your input!
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[ovirt-users] Thin pool best proctices

2019-10-07 Thread jeremy_tourville 
After a week of downtime from a thin pool that had 100% full metadata I decided 
to rebuild my single node.  My post was formerly titled: Ovirt 4.2.7 won't 
start and drops to emergency console.  I have backups of nearly all my VMs and 
I am working on importing them.  I went from version 4.2.7.1 to 4.3.6.  I am 
comfortable with LVM but I am new to administering thin pool LVM.  I am asking 
myself what can I do to avoid this headache in the future?  What practical 
steps should I take?
-Regular backups
-Monitoring
-Proper configuration

It's the last one that is the most difficult for me.  You don't know what you 
don't know Can anyone share tips and advice?

I learned that /etc/LVM has backups.  It should be part of the backup strategy. 
 I now know that thin pools have a special metadata volume that should be 
monitored for disk space.

At the time I built the system I used the gedploy gluster config file.  I had 
assumed the values in there were "safe".  As I found out the hard way, reality 
proved otherwise.  I was reading elsewhere about allowing the thin volume to 
grow 20% as needed but no real mention of how to do that or a good example.  As 
I understand it, the config to make that happen exists in lvm.conf.  Is that 
right?

Have there been any changes in Ansible GlusterFS setup  since 4.2.7 to choose 
different "safe" values with newer versions?  

I hope my comments won't be taken as critical by any Dev Team members regarding 
Ansible.  My sole intent for this post is so I learn what to do better/right 
next time.  I do have most of my VMs and the few I lost are not critical.  It 
was lucky that I learned a hard lesson the easy way.

Thanks for your input!
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[ovirt-users] Re: Problem with logical network

2019-10-07 Thread Alex Irmel Oviedo Solis 
OVIRT Version: 4.2.7.5-1.el7




ovs-vsctl show output:

21c14833-c5cb-460c-8985-bef8543f889b

    ovs_version: "2.9.0"



ovs-vsctl list open output:

_uuid   : 21c14833-c5cb-460c-8985-bef8543f889b

bridges : []

cur_cfg : 1

datapath_types  : [netdev, system]

db_version  : "7.15.1"

external_ids    : {hostname="virt00.gorecusco.net", ovn-bridge-mappings="", 
rundir="/var/run/openvswitch", system-id="becb5073-42fc-4058-8238-23d718fff433"}

iface_types : [geneve, gre, internal, lisp, patch, stt, system, tap, 
vxlan]

manager_options : []

next_cfg    : 1

other_config    : {}

ovs_version : "2.9.0"

ssl : []

statistics  : {}

system_type : centos

system_version  : "7"





 En lun, 07 oct 2019 08:57:39 -0500 Miguel Duarte de Mora Barroso 
 escribió 



On Sat, Oct 5, 2019 at 7:15 AM Strahil  wrote: 
> 
> Can you check your hosts and especially their networks. 
> If any network is not OK (out of sync), you can fix it from the UI. 
> 
> Best Regards, 
> Strahil Nikolov 
> 
> On Oct 4, 2019 23:47, Alex Irmel Oviedo Solis  
> wrote: 
> 
> Hello, I'm trying to run a vm with two ethernet interfaces, one of them 
> attached to ovirmnt and the other attached to a logical network named 
> internal_servers and got this error: 
 
Which ovirt version ? 
 
> 
> "VM is down with error. Exit message: can not get MTU interface in 'br-int': 
> No such device2 
 
This error sounds related to ovn provider networks (it uses an 
internal OVS bridge, called br-int). Is this 'internal_servers' 
network a network 'created on external provider' ? 
 
If so, I think somehow OVN was not properly configured; please tell us 
the configuration state in one of your hosts - the output of: 
 - ovs-vsctl show 
 - ovs-vsctl list Open 
 
> 
> Then I created the bridge manually but I get the following error: 
> 
> "VM is down with error. Exit message: Hook Error: ('',)." 
> 
> Please help me. 
> 
> Best Regards 
> 
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[ovirt-users] Re: oVirt Software after upgrade

2019-10-07 Thread Sandro Bonazzola 
Il giorno lun 30 set 2019 alle ore 16:11 Rick A  ha
scritto:

> I'm wondering why after upgrading our hosts, when viewing the host
> details, it's still showing the OS Description as 4.3.3.1. We are using the
> oVirt Node. Shouldn't the OS Description show the version we just upgraded
> to? I do the upgrade using the web UI.
>

Hi, did you reboot the node after the update?


>
> Thanks
>
>
> OS Version: RHEL - 7 - 6.1810.2.el7.centos
> OS Description: oVirt Node 4.3.3.1
>  <--
> Kernel Version: 3.10.0 - 957.10.1.el7.x86_64
> KVM Version: 2.12.0 - 18.el7_6.3.1
> LIBVIRT Version: libvirt-4.5.0-10.el7_6.6
> VDSM Version: vdsm-4.30.13-1.el7
> SPICE Version: 0.14.0 - 6.el7_6.1
> GlusterFS Version: glusterfs-5.5-1.el7
> CEPH Version: librbd1-10.2.5-4.el7
> Open vSwitch Version: openvswitch-2.10.1-3.el7
> Kernel Features: PTI: 1, IBRS: 1, RETP: 0, SSBD: 3
> VNC Encryption: Disabled
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-- 

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MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA 

sbona...@redhat.com
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[ovirt-users] Re: Problem with logical network

2019-10-07 Thread Miguel Duarte de Mora Barroso 
On Sat, Oct 5, 2019 at 7:15 AM Strahil  wrote:
>
> Can you check your hosts and especially their networks.
> If any network is not OK (out of sync), you can fix it from the UI.
>
> Best Regards,
> Strahil Nikolov
>
> On Oct 4, 2019 23:47, Alex Irmel Oviedo Solis  wrote:
>
> Hello, I'm trying to run a vm with two ethernet interfaces, one of them 
> attached to ovirmnt and the other attached to a logical network named 
> internal_servers and got this error:

Which ovirt version ?

>
> "VM is down with error. Exit message: can not get MTU interface in 'br-int': 
> No such device2

This error sounds related to ovn provider networks (it uses an
internal OVS bridge, called br-int). Is this 'internal_servers'
network a network 'created on external provider' ?

If so, I think somehow OVN was not properly configured; please tell us
the configuration state in one of your hosts - the output of:
  - ovs-vsctl show
  - ovs-vsctl list Open

>
> Then I created the bridge manually but I get the following error:
>
> "VM is down with error. Exit message: Hook Error: ('',)."
>
> Please help me.
>
> Best Regards
>
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[ovirt-users] Re: Trying to add a LUN to a host and use that, instead of Gluster, as the datastore for my VM's.

2019-10-07 Thread TomK 

Allright.

So I followed this and configured local storage.  It had some default 
names that I changed.  It would have been either the default name, or 
one I choose.  In either case it would be a different name then the 
Gluster storage domain the host was a part of anyway.


Once the process completed for both hosts, I noticed the Gluster volume 
storage domain was offline and the gluster volume was gone.  I can't 
seem to add that back in anymore.  I get:


"Error while executing action DisconnectStorageServerConnection: Error 
storage server disconnection"


Guessing I can't have local storage in addition to Gluster on the same 
hosts and available for VM's?


Reason why I need that is that Gluster is slow but provides redundancy 
and live migration.  But I also wanted direct storage for VM's requiring 
faster IO.  So here's my scenario:


host01
/dev/sda OS
/dev/sdb 4TB (For Gluster)
/dev/sdc 4TB (For Local Storage)

host02
/dev/sda OS
/dev/sdb 4TB (For Gluster)
/dev/sdc 4TB (For Local Storage)

I would like to have:

1) GlusterFS volume available to oVirt via the two /dev/sdb drives in 
both physical hosts.
2) Two locally attached LUN's, each separate and local to that physical 
host.


Is this possible?

Cheers,
TK

On 10/6/2019 12:38 AM, Strahil wrote:

Hi Tom,

Have you checked 
https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/sect-preparing_and_adding_local_storage
 ?

Best Regards,
Strahil NikolovOn Oct 6, 2019 06:26, TomK  wrote:


Hey All,

I've added a 4TB LUN to my physical storage and now I want to use that,
instead of GlusterFS as my datastore for VM's on that physical.  How do
I do this?

I've tried a number of options, including adding LUN's but appears I can
only add them to VM's directly but not use them as my datastores instead
of GlusterFS.

--
Thx,
TK.
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--
Thx,
TK.
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[ovirt-users] Re: Managed Block Storage/Ceph: Experiences from Catastrophic Hardware failure

2019-10-07 Thread Benny Zlotnik 
We support it as part of the cinderlib integration (Managed Block
Storage), each rbd device is represented as single ovirt disk when
used.
The integration is still in tech preview and still has a long way to
go, but any early feedback is highly appreciated


On Mon, Oct 7, 2019 at 2:20 PM Strahil  wrote:
>
> Hi Dan,
>
> As CEPH support is quite new, we need  DEV clarification.
>
> Hi Sandro,
>
> Who can help to clarify if Ovirt supports direct RBD LUNs presented on the 
> VMs?
> Are there any limitations in the current solution ?
>
> Best Regards,
> Strahil NikolovOn Oct 7, 2019 13:54, Dan Poltawski  
> wrote:
> >
> > On Mon, 2019-10-07 at 01:56 +0300, Strahil Nikolov wrote:
> > > I'm not very sure that you are supposed to use the CEPH by giving
> > > each VM direct access.
> > >
> > > Have you considered using an iSCSI gateway as an entry point for your
> > > storage domain ? This way oVirt will have no issues dealing with the
> > > rbd locks.
> > >
> > > Of course, oVirt might be able to deal with RBD locks , but that can
> > > be confirmed/denied by the devs.
> >
> > Thanks for your response - regarding the locks point, I realised later
> > that this was my own incorrect permissions given to the client. The
> > ceph client was detecting the broken locks when mounting the rbd device
> > and unable to blacklist it. I addressed this by swithcign to the
> > permissions 'profile rbd'.
> >
> > Regarding iSCSI, we are using this for the hosted engine. However, I am
> > attracted to the idea of managing block devices with individual rbd
> > devices to facilate individual block device level snapshotting and I
> > assume performance will be better.
> >
> > thanks,
> >
> > Dan
> >
> > 
> >
> > The Networking People (TNP) Limited. Registered office: Network House, 
> > Caton Rd, Lancaster, LA1 3PE. Registered in England & Wales with company 
> > number: 07667393
> >
> > This email and any files transmitted with it are confidential and intended 
> > solely for the use of the individual or entity to whom they are addressed. 
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[ovirt-users] Re: Managed Block Storage/Ceph: Experiences from Catastrophic Hardware failure

2019-10-07 Thread Strahil 
Hi Dan,

As CEPH support is quite new, we need  DEV clarification.

Hi Sandro,

Who can help to clarify if Ovirt supports direct RBD LUNs presented on the VMs?
Are there any limitations in the current solution ?

Best Regards,
Strahil NikolovOn Oct 7, 2019 13:54, Dan Poltawski  
wrote:
>
> On Mon, 2019-10-07 at 01:56 +0300, Strahil Nikolov wrote: 
> > I'm not very sure that you are supposed to use the CEPH by giving 
> > each VM direct access. 
> > 
> > Have you considered using an iSCSI gateway as an entry point for your 
> > storage domain ? This way oVirt will have no issues dealing with the 
> > rbd locks. 
> > 
> > Of course, oVirt might be able to deal with RBD locks , but that can 
> > be confirmed/denied by the devs. 
>
> Thanks for your response - regarding the locks point, I realised later 
> that this was my own incorrect permissions given to the client. The 
> ceph client was detecting the broken locks when mounting the rbd device 
> and unable to blacklist it. I addressed this by swithcign to the 
> permissions 'profile rbd'. 
>
> Regarding iSCSI, we are using this for the hosted engine. However, I am 
> attracted to the idea of managing block devices with individual rbd 
> devices to facilate individual block device level snapshotting and I 
> assume performance will be better. 
>
> thanks, 
>
> Dan 
>
>  
>
> The Networking People (TNP) Limited. Registered office: Network House, Caton 
> Rd, Lancaster, LA1 3PE. Registered in England & Wales with company number: 
> 07667393 
>
> This email and any files transmitted with it are confidential and intended 
> solely for the use of the individual or entity to whom they are addressed. If 
> you have received this email in error please notify the system manager. This 
> message contains confidential information and is intended only for the 
> individual named. If you are not the named addressee you should not 
> disseminate, distribute or copy this e-mail. Please notify the sender 
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> this e-mail from your system. If you are not the intended recipient you are 
> notified that disclosing, copying, distributing or taking any action in 
> reliance on the contents of this information is strictly prohibited. 
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[ovirt-users] Re: VDI

2019-10-07 Thread Leo David 
Thank you very much for the informations.
I'm am sorry for my lack of knowledge,  but the vGPU / vm graphical
performance part is a bit confusing for me at the moment.
As far as i've understood,  if some real decent graphical performance is
needed for the vms,  the only proper way is to install a grid supported gpu
card on the hypervisor,  and have the "slices" assigned to the vms.
A rough look show that this will add at least 4k - 5k dollars per node...
Just as a reference,  its only about "office type" vdi's that only do web
browsing and sometimes youtube videos / skype calls.
Any thoughts for a more less expensive way to achieve this ?

Again, thank you very much !

On Sun, Oct 6, 2019 at 12:22 PM Alex McWhirter  wrote:

> We use customized versions of spice / kvm. Same versions ovirt ships with
> for compatibility reasons, with audio patches on the kvm side and spice
> patches for vp8 encoding the video streams. We've been meaning to make the
> repo for our custom patched versions public for a while, if you are
> interested i can accelerate that. Note, you also need patched versions of
> spice client if yours wasn't build with vp8 support, we have those too.
>
> On the experimental side we have another in-progress set of patches that
> enable h264 encoding in spice, hardware accelerated with AMD W5100's, but
> this requires a lot of new software to be installed and a new kernel,
> CentOS 8 should fix most of that, so we'll probably re-base and release on
> that when the time is right.
>
> The GPU's are not used for the guests at all, we only use them for the
> h264 encoding. AMD was picked to avoid proprietary drivers and stream
> limits. No RAM / SR-IOV needed, if you want 3d support you will be looking
> more for Nvidia-GRID.
>
>
> Anyways, with just the patched software installed and some custom
> settings, video playback is about 95% the quality of native, takes about
> 40mbit/s per client to stream it. Audio has the occasional stutter, but
> it's not bad.
>
>
> On 2019-10-06 05:09, Leo David wrote:
>
> Thank you for sharing the informations Alex, they are very helpfull. I am
> now able to get sound from the vms,  although performance is pretty poor
> even with "adjust for performance" setting in Win10. Cannot even talk
> about youtube video playing - freezing and crackling.
> Could you please be so kind to share the following infos:
> 1. Have you upgraded the "spice-server" installed on the hosts with a
>  newer version than 1.4.0 ? If so,  could you provide me how could I get
> these packages ?
> 2. What graphic card have you used for getting better graphic performance
> with the vms ? Im trying to understand what "accepted" card could I use
> with my 1U chassis servers...
> 3. Is it only needed to install the card and the platform will alocate
> physical video memory to "desktop" vms ? (  Will the card RAM
> be automatically shared across the desktop tyoe vms running on top  of the
> host ? )
> 4. Is it necesarilly to activate sr-iov in the hosts bios or any other
> platform configurations ?
>
> I am really sorry for asking too many things,  but im just trying to get
> these vdi vms working at least decent...
> Thank you so much !
>
> Leo
>
>
> -- Forwarded message -
> From: 
> Date: Tue, Sep 24, 2019 at 7:50 PM
> Subject: Re: [ovirt-users] Re: VDI
> To: Leo David 
>
>
> Audio should just work as long as the VM is of the desktop type.
>
> On Sep 24, 2019 6:50 AM, Leo David  wrote:
>
> Thank you Alex,
> When you say "gpu backed"  are you referring to sr-iov  to share same gpu
> to multiple vms ?
> Any thoughts regarding passing audio form the vm to the client ?
> Did you do any update of the spice-server on the hosts ?
>
> Thanks,
>
> Leo
>
> On Tue, Sep 24, 2019 at 12:01 PM  wrote:
>
> I believe a lot of the package updates in CentOS 8 will solve some of the
> issues.
>
> But for now we get around them by disabling all visual effects on our VMS.
> If you are gpu backing the VMS with something like Nvidia grid the issues
> are non existent, but for non gpu backed VMS currently disabling all the
> effects is a must.
>
> We deploy the changes via gpo directly to the registry, so they take
> effect on first VM boot.
>
> On Sep 24, 2019 2:03 AM, Leo David  wrote:
>
> Thank you Alex from my side as well, very usefull information. I am the
> middle of vdi implementation as well, and i'm having issues with the spice
> console since 4.2, and it seems that latest 4.3 is still having the
> problem.
> What am i confrunting is:
> - spice console is very slaggy and slow for Win10 vms ( not even talking
> about running videos..)
> - i can't find a way to get audio from the vm
> At the moment i am running 4.3, latest virt-viewer installed on the
> client, and latest qxl-dod driver installed on the vm.
> Any thoughts on solving video performance and audio redirection ?
> Thank you again,
>
> Leo
>
> On Mon, Sep 23, 2019, 22:53 Alex McWhirter  wrote:
>
> To achieve that all you need to do is creat