[ovirt-users] Re: [External] : Re: Unable Access VM console VNC

[Marcos Sungaila via Users]

When enabling or disabling VNC encryption, a host reinstallation will be 
required to have it properly changed.

Marcos

-Original Message-
From: Ankit Sharma  
Sent: Thursday, May 23, 2024 3:11 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: Unable Access VM console VNC

Hi Deepak,

Thanks for your time for answering :).

I have already done that but still not succeeded. The error is host_ip:5900 
request timeout while trying to access vm console. i have also checked 
disabling firewalls and am able to do telnet on 5900.

Thanks,
AS
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[ovirt-users] Re: [External] : Importing VMs from CentOS 8 Streams to Oracle 8.9 oVirt (QXL issues)

[Marcos Sungaila via Users]

Hi Gilboa,

The spice protocol has been deprecated by Red Hat for over 3 years. It may 
still be available in CentOS or RHEL versions but not in OL.
It cannot be enabled.

Marcos

From: Gilboa Davara 
Sent: Thursday, May 16, 2024 9:07 AM
To: oVirt Users 
Subject: [External] : [ovirt-users] Importing VMs from CentOS 8 Streams to 
Oracle 8.9 oVirt (QXL issues)

Hello all,

I'm evaluating switching our existing oVirt clusters to Oracle Linux 8 oVirt 
4.5.
It seems that Oracle has completely disabled QXL/Spice (leaving only VGA and 
Cirrus) on their oVirt fork (1).
I'm trying to import a VM from an existing oVirt data storage into an Oracle 
cluster, but I'm getting
'VAR__ACTION__IMPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_ILLEGAL_VM_DISPLAY_TYPE_IS_NOT_SUPPORTED_BY_OS'
 error.
Comparing the spice-related packages in Oracle and CentOS based oVirt 
installation, I see no changes.

Two questions:
1. Can I somehow enable QXL support in Oracle oVirt?
2. Assuming I can't, can I somehow editing the VM configuration without 
mounting in a temporary CentOS based cluster, editing the configuration and 
reimporting it into Oracle?

Thanks,
Gilboa

1) 
https://forums.oracle.com/ords/apexds/post/olvm-ol8-spice-support-completely-missing-how-to-enable-8796
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[ovirt-users] Re: [External] : Ovirt Host Machine Use Case

[Marcos Sungaila via Users]

Hi Muhesh,

All open ports will be listed in the /var/log/vdsm/vdsm.log file in the KVM 
host the VM is running. There you can find what may happened to your instance 
to change ports.

Marcos

-Original Message-
From: Muhesh Kumar  
Sent: Monday, May 13, 2024 8:56 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Ovirt Host Machine Use Case

Hi Everyone,
Initially, In ovirt host machine qemu-kvm is running in 
5901,5902,5903,5904,5906 and 5907. But suddenly, It has now running with 
additional ports 5900 and 5905. Can anyone know why this kind of ports ovirt is 
newly adding without any actions taking in machines. I Didn't restart any 
services in host machines.
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[ovirt-users] Re: [External] : Can't create shared disk after upgrade to 4.5.4

[Marcos Sungaila via Users]

The option Enable Incremental Backup must not be enabled when creating a Shared 
Virtual Disk.

Marcos

-Original Message-
From: mahenderjosh...@gmail.com  
Sent: Thursday, April 18, 2024 11:15 AM
To: users@ovirt.org
Subject: [ovirt-users] Re: [External] : Can't create shared disk after upgrade 
to 4.5.4

Hi, 

I have also faced the same issue. can anyone suggest the appropriate solution 
for this one.
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[ovirt-users] Re: [External] : NFS Share file to mount in ovIrt

[Marcos Sungaila via Users]

Hi De Lee,

The directory shared by NFS must be owned by the vdsm user (UID 36) and the kvm 
group (GID 36) with 0755 permission.
Also, the share configuration must allow your KVM hosts to connect to it, like:

/share-directoryIP-ADDRESS-OR-HOSTNAME(rw)
OTHER-IP-ADDRESS-OR-HOSTNAME(rw)

You can add other options if you want. Then restart the nfs service or reload 
the exports and test again.
After that, try manually mounting the NFS share on your KVM host to confirm it 
works.

Marcos

-Original Message-
From: De Lee  
Sent: Wednesday, April 10, 2024 6:36 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] NFS Share file to mount in ovIrt

Hi 

I was trying to add the new NFS share path in the ovirt node. But unforunately 
it doesn' work for me.Try to mount the nfs via ovirt manager but fails with 
following error message

Error while executing action Add Storage Connection: Permission settings on the 
specified path do not allow access to the storage.
Verify permission settings on the specified storage path.

tried with troubleshooting document but it doesn't work

[root@ov02 contrib]# python3 nfs-check.py 10.34.95.5:/TESTNAS01 Current 
hostname: ov02 - IP addr 10.34.95.42 Trying to /bin/mount -t nfs 
10.34.95.5:/TESTNAS01...
return = 32 error b'mount.nfs: access denied by server while mounting 
10.34.95.5:/TESTNAS01'
0 drwxr-xr-x.3 vdsm kvm17 Apr  9 06:12 exports

[root@ov01 /]# /usr/bin/sudo -n /bin/mount -t nfs -o 
soft,nosharecache,timeo=600,retrans=6,nfsvers=3 10.34.95.5:/TESTNAS01 
/exports/nfs/
mount.nfs: access denied by server while mounting 10.34.95.5:/TESTNAS01 
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[ovirt-users] Re: [External] : Deploying the self-hosted engine failed

[Marcos Sungaila via Users]

Hi,

It is hard to say anything from the output snippet you sent.
You should have sent the VM resources (mem, cpu, disk, nics), the distro and 
version you are using, the command used to start the deployment, all input 
provided, and the whole output. Please use a service like pastebin.com if you 
will share the whole output.

Marcos

-Original Message-
From: sat...@tracthai.com  
Sent: Thursday, April 11, 2024 12:30 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Deploying the self-hosted engine failed

i found error while deploy engine v.4.5.5 on environment VMware 8.0 nested

[ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "argument 
'path' is of type  and we were unable to convert to path: 
'None' is not a string and conversion is not allowed"} [ ERROR ] Failed to 
execute stage 'Clean up': Failed executing ansible-playbook [ INFO  ] 
Generating answer file 
'/var/lib/ovirt-hosted-engine-setup/answers/answers-2024040411.conf'
[ INFO  ] Stage: Pre-termination
[ INFO  ] Stage: Termination
[ ERROR ] Hosted Engine deployment failed
  Log file is located at 
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20240404115531-z0k05n.log

=

log in 
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20240404115531-z0k05n.log

ERROR otopi.plugins.gr_he_common.core.misc misc._terminate:167 Hosted Engine 
deployment failed

Please help resolve this issue
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[ovirt-users] Re: [External] : Re: Keycloak SSO integration

[Marcos Sungaila via Users]

Unfortunately, Keycloak is not fully integrated into oVirt, other than the main 
authentication will not work.
Scripts from the ovirt-sdk4, virt-v2v commands, API access, and others still 
rely on the AAA authentication mechanism.

Marcos

-Original Message-
From: luc.lalo...@polymtl.ca  
Sent: Saturday, April 6, 2024 9:23 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: Keycloak SSO integration

Unfortunately, I chose the 'Keycloak' option during the setup instead.   So 
using using ovirt-engine-extension-aaa-ldap-setup is not an option.

In the documentation, they say that 'ovirt-engine-extension-aaa-ldap-setup' is 
being deprecated...  I regret not using it anyway.   Documentation is missing 
on how to configure Keycloak (RedHat SSO).

Thank You.
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[ovirt-users] Re: [External] : Re: Keycloak SSO integration

[Marcos Sungaila via Users]

You can try this

https://blogs.ovirt.org/wp-content/uploads/2021/09/04-Prerequisites-and-Troubleshooting-an-oVirt-External-Authentication-Provider-%E2%80%93-Marcos-Sungiala.pdf

Marcos

-Original Message-
From: luc.lalo...@polymtl.ca  
Sent: Saturday, April 6, 2024 8:34 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: Keycloak SSO integration

People must not be using Keycloak (Redhat SSO).Anyone have experience 
integrating LDAP users in Ovirt? 
The documentation on the Ovirt site is very scant on the subject.For the 
moment I'm only able to use admin@ovirt.
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[ovirt-users] Re: [External] : Re: Ovirt Hyperconverged

[Marcos Sungaila via Users]

Hi Ricardo,

When searching for SHE deployment errors, grep for error and failed:

grep -i -e error -e failed 
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20240415201836-r0gt54.log

If you have the logs available, try again, will be easier to find the cause.

Marcos

-Original Message-
From: Ricardo OT  
Sent: Monday, April 15, 2024 4:21 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: Ovirt Hyperconverged

Hi,
I have recently tried to install the hosted engine on a node recently installed 
with Rocky Linux 8.9 with glusterfs and with the nightly oVirt master snapshot 
repository, and I have also tried to do the same with the Oracle distribution 
and I have not been able to get the installation of the hosted engine to work. 
Before this worked. Now I have only managed to install the engine as 
standalone. Does anyone know what could be the reason?

:(

greep -i error 
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20240415201836-r0gt54.log
-bash: greep: no se encontró la orden
[root@host-01 ~]# grep -i error 
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20240415201836-r0gt54.log
2024-04-15 20:18:36,751+0200 DEBUG otopi.context context.dumpEnvironment:775 
ENV BASE/error=bool:'False'
2024-04-15 20:18:37,219+0200 DEBUG otopi.context context.dumpEnvironment:775 
ENV BASE/error=bool:'False'
errorlevel = 3
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54291
socket.gaierror: [Errno -2] Nombre o servicio desconocido
2024-04-15 20:21:25,754+0200 DEBUG otopi.context context.dumpEnvironment:775 
ENV BASE/error=bool:'False'
2024-04-15 20:24:45,966+0200 DEBUG 
otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 
{'changed': False, 'stdout': '', 'stderr': "error: Falló al obtener la red 
'default'\nerror: No se ha encontrado la red: No existe una red que coincida 
con el nombre 'default'", 'rc': 1, 'cmd': ['virsh', 'net-undefine', 'default'], 
'start': '2024-04-15 20:24:45.653112', 'end': '2024-04-15 20:24:45.737169', 
'delta': '0:00:00.084057', 'msg': 'non-zero return code', 'invocation': 
{'module_args': {'_raw_params': 'virsh net-undefine default', '_uses_shell': 
False, 'warn': False, 'stdin_add_newline': True, 'strip_empty_ends': True, 
'argv': None, 'chdir': None, 'executable': None, 'creates': None, 'removes': 
None, 'stdin': None}}, 'stdout_lines': [], 'stderr_lines': ["error: Falló al 
obtener la red 'default'", "error: No se ha encontrado la red: No existe una 
red que coincida con el nombre 'default'"], '_ansible_no_log': None}
2024-04-15 20:24:46,067+0200 DEBUG 
otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 
ignored: [localhost]: FAILED! => {"changed": false, "cmd": ["virsh", 
"net-undefine", "default"], "delta": "0:00:00.084057", "end": "2024-04-15 
20:24:45.737169", "msg": "non-zero return code", "rc": 1, "start": "2024-04-15 
20:24:45.653112", "stderr": "error: Falló al obtener la red 'default'\nerror: 
No se ha encontrado la red: No existe una red que coincida con el nombre 
'default'", "stderr_lines": ["error: Falló al obtener la red 'default'", 
"error: No se ha encontrado la red: No existe una red que coincida con el 
nombre 'default'"], "stdout": "", "stdout_lines": []}
2024-04-15 20:24:50,986+0200 DEBUG 
otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 
{'changed': False, 'stdout': '', 'stderr': "error: Falló al identificarse la 
red default como autoiniciable\nerror: Falló al crear enlace simbólico 
'/etc/libvirt/qemu/networks/autostart/default.xml' en 
'/etc/libvirt/qemu/networks/default.xml': El fichero ya existe", 'rc': 1, 
'cmd': ['virsh', 'net-autostart', 'default'], 'start': '2024-04-15 
20:24:49.654500', 'end': '2024-04-15 20:24:50.741081', 'delta': 
'0:00:01.086581', 'msg': 'non-zero return code', 'invocation': {'module_args': 
{'_raw_params': 'virsh net-autostart default', '_uses_shell': False, 'warn': 
False, 'stdin_add_newline': True, 'strip_empty_ends': True, 'argv': None, 
'chdir': None, 'executable': None, 'creates': None, 'removes': None, 'stdin': 
None}}, 'stdout_lines': [], 'stderr_lines': ['error: Falló al identificarse la 
red default como autoiniciable', "error: Falló al crear enlace simbólico 
'/etc/libvirt/qemu/networks/autostart/default.xml' en 
'/etc/libvirt/qemu/networks/default.xml': El fichero ya existe"], 
'_ansible_no_log': None}
2024-04-15 20:24:51,087+0200 DEBUG 
otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 
ignored: [localhost]: FAILED! => {"changed": false, "cmd": ["virsh", 
"net-autostart", "default"], "delta": "0:00:01.086581", "end": "2024-04-15 
20:24:50.741081", "msg": "non-zero return code", "rc": 1, "start": "2024-04-15 
20:24:49.654500", "stderr": "error: Falló al identificarse la red default como 
autoiniciable\nerror: Falló al crear enlace simbólico 
'/etc/libvirt/qemu/networks/autostart/default.xml' en 
'/etc/libvirt/qemu/networks/default.xml': El 

[ovirt-users] Re: [External] : Can't create shared disk after upgrade to 4.5.4

[Marcos Sungaila via Users]

Hi Igor,

When creating a virtual disk, in 4.5 (oVirt & OLVM), the "New Virtual Disk" 
dialog brings the "Enable Incremental Backup" automatically checked.
The "Shareable" and "Enable Incremental Backup" options can not be set 
simultaneously.
To create a shareable virtual disk, click the "Shareable" option and unclick  
the "Enable Incremental Backup" option.

Marcos

-Original Message-
From: Igor Filipovic via Users  
Sent: Sunday, March 31, 2024 3:08 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Can't create shared disk after upgrade to 
4.5.4

Hi,
In my lab I'm using OLVM ( I know ... it's not original oVirt but it is based 
on it ). I was using 4.4.10, and after upgrade to 4.5.4 I'm no longer able to 
create shared disks, on any storage domain (nfs or fc). When I was on previous 
release I was able to create and use shared disks (required for cluster 
systems), but after upgrade when I try to create shared disk (preallocated) I'm 
getting an error saying : Error while executing action: Cannot add Virtual 
Disk. Disk's volume format is not supported for shareable disk.
In engine log I can see only this :
2024-03-31 20:04:28,997+02 WARN  
[org.ovirt.engine.core.bll.storage.disk.AddDiskCommand] (default task-37) 
[b8bc1831-260a-4253-b6fe-e0c81a6f81b6] Validation of action 'AddDisk' failed 
for user admin@internal-authz. Reasons: 
VAR__ACTION__ADD,VAR__TYPE__DISK,SHAREABLE_DISK_IS_NOT_SUPPORTED_BY_VOLUME_FORMAT

Does anyone have idea what could be the reason or how to solve this?
Thanks in advance and best regards
Igor
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[ovirt-users] Re: [External] : Singe host installation

[Marcos Sungaila via Users]

If you are not planning to have a second KVM host in the future, I should use a 
stand-alone KVM host managed by the Cockpit web UI.

Marcos

-Original Message-
From: Jakov Sosic  
Sent: Friday, April 5, 2024 7:50 AM
To: users 
Subject: [External] : [ovirt-users] Singe host installation

Hi guys,

I want to run oVirt on a single host, is that possible?


Running external engine is a possibility.


Thanks,

Jakov
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[ovirt-users] Re: [External] : How to Add Centos9 KVM Host to oVirt engine?

[Marcos Sungaila]

Hi,

You cannot run the ovirt-engine service on a KVM host. The server must act as a 
hypervisor (KVM host) or the Engine server, not both at the same time. I 
understand you are running a lab using VMs. Create two VMs, one for the KVM 
host and another for the Engine application.

Regards,
Marcos

-Original Message-
From: i...@tlivesupport.com  
Sent: Thursday, March 21, 2024 9:51 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] How to Add Centos9 KVM Host to oVirt engine?

Hello Team

I have installed KVM and oVirt in Same VM (Centos9) i am trying add Host with 
IP. After adding i am getting message like Status Non-operational.
When i create VM I am getting message like " Not available when no Data Center 
is up."

Please advise what is missing?

Please provide me steps to add KVM into oVirt Enginee 
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[ovirt-users] Re: [External] : Understanding Preallocation (Actual) Size of a thin DIsk

[Marcos Sungaila]

Hi Shafi,

Creating a thin provisioned disk using a block Storage Domain will allocate 
512MB of disk space. I don’t have the values for a file-based Storage Domain.
In a regular VM operation, the disk is increased when it reaches 80% (dev team, 
correct me if I’m wrong) of the allocated space used. This does not impact the 
VM operation, and disks are increased as needed with no VM downtime.
If you try to test this disk size-increasing functionality using tools like dd, 
you will fail because it does not behave like a normal VM operation.

Regards,
Marcos

From: Shafi Mohammed 
Sent: Friday, March 22, 2024 3:53 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Understanding Preallocation (Actual) Size 
of a thin DIsk

HI ,

I need to know about the Pre allocation size of a thin disk while creating a 
disk in a storage domain .

Can we change the  actual size (allocated Size ) after disk creation .Can 
anyone can enlighten me on how it will increase when the size of the disk 
exceeds the allocated limit ?

If I try to write to the disk from the hypervisor , the write gets failed after 
the allocated size whereas if i create a thick disk i am able to write till the 
disk capacity



Regards
Shafi
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[ovirt-users] Re: [External] : Create Vm without Storage Domain

[Marcos Sungaila]

Hi Shafi,

A Storage Domain in oVirt is like a Storage Pool in a stand-alone KVM host.
To create a virtual disk on a stand-alone KVM host, a storage pool must exist 
where you create the virtual disk. The same for oVirt, to upload or to create a 
virtual disk, a Storage Domain must exist.
After uploading the disk to the Storage Domain, you can attach it to a VM.

Marcos

From: Shafi Mohammed 
Sent: Wednesday, March 20, 2024 3:50 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Create Vm without Storage Domain

Hi Team ,

I am new to Ovirt and  have been using KVM off late . I use libvirt (virt or 
virsh commands) to create and manage Vms .
I have a pretty basic doubt in OVirt . I was trying to migrate a VM from my KVM 
host .I copied my .qcow2 virtual disk to the ovirt host.

I am able to create a Vm after uploading the disk to a new storage domain and 
create a VM with the storage domain.

Can I create a VM without using a storage domain ( By directly attaching the 
copied .qcow2 disk ) to the Vm

Regards
Shafi
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[ovirt-users] Re: [External] : The table in the database is too large

[Marcos Sungaila]

Just run the DB vacuum scripts:
/usr/share/ovirt-engine/bin/engine-vacuum.sh -a -f -v
/usr/share/ovirt-engine-dwh/bin/dwh-vacuum.sh -a -f -v

You may want to change options, check its help descriptions.

Marcos

-Original Message-
From: ziyi Liu  
Sent: Wednesday, March 13, 2024 5:22 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] The table in the database is too large

numa_node 6.39GB
vds_interface_statistics 3.08GB
vm_statistics 2.64GB
vds_statistics 1.72GB
vm_interface_statistics 1.54GB
audit_log 1.44GB
disk_image_dynamic 1.22GB
vm_dynamic 1GB
These tables basically have more than 200 rows, how should I reduce the data?
I have 111 hosts and 175 virtual machines 
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[ovirt-users] Re: [External] : Unable to upload image to disk - due to a network error

[Marcos Sungaila]

Hi Alan,

Some comments before the solution.

> This message is related to network not to certificate because it is installed 
> otherwise it cannot even started to upload.
Even if the certificate is not installed, the upload will start, and the 
initial phase will go through but will fall into a paused state soon.

You can use the Engine server or a KVM host to upload the ISO image or prepare 
a Linux box with all the required packages to upload ISO images to a Data 
Storage Domain.

I'm using OLVM, but the steps are the same for oVirt on CentOS or other 
distros. Here are the instructions:

How to upload an ISO image through the command line in OLVM 4.5

- Install the python3-ovirt-engine-sdk4 and ovirt-imageio-client rpm packages. 
Both packages are installed by default on all OLVM hosts (KVM and Engine 
servers).

- Download the OLVM CA Public Key, saving it to the /root home directory or any 
other place you want. You can use the /etc/pki/ovirt-engine/ca if running on 
the Engine server.pem file:

curl -k -L 
'http:///ovirt-engine/services/pki-resource?resource=ca-certificate=X509-PEM-CA'
 -o /root/ca-.pem

- Create the config file ~/.config/ovirt.conf with the following content:

mkdir ~/.config

cat << EOF > ~/.config/ovirt.conf
[OLVM-PROFILE]
engine_url = https://
username = 
password = 
cafile = 
EOF

Notes: 
. You can change the OLVM-PROFILE name to something meaningful for your 
environment like prod-engine or olvmdashboard or any other thing you like.
. The user must have the domain in it, for example: admin@internal or the AD 
domain if using external authentication.
. You can use the /usr/share/doc/python3-ovirt-engine-sdk4/examples/ovirt.conf 
example file to add other configuration options to this file.

- Prerequisites:

  - Current scripts from the python3-ovirt-engine-sdk4 rpm package still search 
for the python command. Configure the python command using alternatives:
  [root@host1 ~]# alternatives --set python /usr/bin/python3

Confirm this configuration works by running the python command: 
  [root@host1 ~]# python
  Python 3.6.8 (default, Nov 10 2022, 12:32:59)
  [GCC 8.5.0 20210514 (Red Hat 8.5.0-15.0.1)] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  >>>

  - OLVM 4.4 installed, up and running with at least one Data Storage Domain 
already configured.
  - Already downloaded ISO image file name: OracleLinux-R9-U0-x86_64-dvd.iso
  - Existing Storage Domain: vms  <-- use your Data Storage name in the 
following command

- Uploading the ISO image to the existing Storage Domain:

[root@host1 ~]# 
/usr/share/doc/python3-ovirt-engine-sdk4/examples/upload_disk.py \
  -c  \
  --disk-format raw \
  --sd-name  \
  OracleLinux-R9-U0-x86_64-dvd.iso

Marcos

-Original Message-
From: Alan Aguinaga  
Sent: Wednesday, February 7, 2024 5:42 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Unable to upload image to disk - due to a 
network error

Hi. Is there a way to send an ISO to self hosted server? 

Because I 've been searching for help and a lot of people complaining about it. 

1 - What is the way to send ISOs to oVirt? Are there a command line tool to 
send ISOs to my server? 
"The ISO Uploader tool has been deprecated. Red Hat recommends uploading ISO 
images to the data domain with the Administration Portal or with the REST API. 
See Section 11.8.1, “Uploading Images to a Data Storage Domain” for details."
https://urldefense.com/v3/__https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/sect-the_iso_uploader_tool__;!!ACWV5N9M2RV99hQ!JlAxn0-R_8KpdDSHPtteie5onFH5Mu8-3r1OTfpCcpeMYqQpiWo5BUll65FndaWOHto4twNm-bxyhXuUxQRasyN5$
 

2 - ISO sending from portal worked for a smaller image. It could be done for OL 
7.9 with 4 GB. But I am trying to upload OL 8.9 ISO with 13.5 GB and it is not 
finishing. It is not resuming. It started to upload. I have a configured 
certificate installed and ok tested connection. 

I got this error: "Unable to upload image to disk 
a72b0da4-1bbb-453c-b846-701eef9761f6 due to a network error. Ensure 
ovirt-engine's CA certificate is registered as a trusted CA in the browser. The 
certificate can be fetched from" 
It started but not finished: "Sent 1732 of 12812 MB" 

This message is related to network not to certificate because it is installed 
otherwise it cannot even started to upload. 

Are there a user-friendly way to upload a ISO to a server using any command 
line tool? Latter versions I can send a ISO to a storage pool and it appears in 
server. Now I read it is impossible. Does it impossible by now? 

My is  4.4.10.7-1.0.25.el8. I am using NFS share and self hosted engine. 




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[ovirt-users] Re: [External] : Re: can hosted engine deploy use local repository mirrors instead of internet ones?

[Marcos Sungaila]

Hi Cam,

The dnsmasq service running on the KVM host manages the IP assignment during 
the first deployment phase.
How did you deploy your KVM host? Which configurations have you done on it 
before running the hosted-engine --deploy?
Also, what is your full hosted-engine deployment command?

Marcos

-Original Message-
From: iuco...@gmail.com  
Sent: Tuesday, January 23, 2024 12:49 PM
To: users@ovirt.org
Subject: [ovirt-users] Re: [External] : Re: can hosted engine deploy use local 
repository mirrors instead of internet ones?

Thanks very for the reply Marcos. I tried another deployment, just to see if 
"wait for the host to be up" would time out, and I saw a couple of errors in 
the log:

From the ovirt-hosted-engine-setup-ansible-final_clean log, it mentions that 
the VM IP is undefined:

2024-01-23 12:50:19,554+ DEBUG 
otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 
{'msg': "The task includes an option with an undefined variable. The error was: 
'local_vm_ip' is undefined. 'local_vm_ip' is undefined\n\nThe error appears to 
be in 
'/usr/share/ansible/collections/ansible_collections/ovirt/ovirt/roles/hosted_engine_setup/tasks/sync_on_engine_machine.yml':
 line 2, column 3, but may\nbe elsewhere in the file depending on the exact 
syntax problem.\n\nThe offending line appears to be:\n\n---\n- name: Set the 
name for add_host\n  ^ here\n", '_ansible_no_log': False}

In the ovirt-hosted-engine-setuplog, it mentions not being able to get the 
storage pool: 

2024-01-23 12:50:35,787+ DEBUG 
otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 
{'changed': True, 'stdout': '', 'stderr': "error: failed to get pool 
'localvmvy8whst5'\nerror: Storage pool not found: no storage pool with matching 
name 'localvmvy8whst5'", 'rc': 1, 'cmd': ['virsh', '-c', 
'qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf', 
'pool-destroy', 'localvmvy8whst5'], 'start': '2024-01-23 12:50:35.558666', 
'end': '2024-01-23 12:50:35.611808', 'delta': '0:00:00.053142', 'msg': 
'non-zero return code', 'invocation': {'module_args': {'_raw_params': 'virsh -c 
qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf pool-destroy 
localvmvy8whst5', '_uses_shell': False, 'stdin_add_newline': True, 
'strip_empty_ends': True, 'argv': None, 'chdir': None, 'executable': None, 
'creates': None, 'removes': None, 'stdin': None}}, 'stdout_lines': [], 
'stderr_lines': ["error: failed to get pool 'localvmvy8whst5'", "error: Storage 
pool not fou
 nd: no storage pool with matching name 'localvmvy8whst5'"], '_ansible_no_log': 
None}

I set the IP to the one I have assigned in DNS, but when I attach to the 
console of the VM (which is still running, though the disk image has been 
deleted) via virsh, it shows me a completely different IP: In hosted-engine 
--deploy, I set a 10.0.0.x address, however, it shows a 192.168.1.x address on 
the VM. Do I need to set this somewhere else, e.g., with 
'--ansible-extra-vars=he_ipv4_subnet_prefix='? 

As for the storage pool, is that for later VM deployment? The deploy script did 
not ask me for a storage location. If I need to specify this, where do I do 
this? 

Thanks again for any help,

Kind regards,

Cam

PS: is there a simple way to have the answers saved so I don't have to keep 
running through all the questions every time I try a deployment 
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[ovirt-users] Re: [External] : Re: can hosted engine deploy use local repository mirrors instead of internet ones?

[Marcos Sungaila]

The he_offline_deployment on oVirt does not check for package updates. If you 
install all the packages in advance, you can use this option.

Marcos

-Original Message-
From: iuco...@gmail.com  
Sent: Monday, January 22, 2024 4:19 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: can hosted engine deploy use local 
repository mirrors instead of internet ones?

I managed to get the firewall opened, and it progressed from there, but got 
stuck at "Wait for the host to be up". I found a suggestion of setting 
'--ansible-extra-vars=he_offline_deployment=true', but then it just failed at 
an earlier point in the deployment process. 
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[ovirt-users] Re: [External] : gluster on iSCSI devices in ovirt environment

[Marcos Sungaila]

I’m not sure if I correctly understood your intention, you want to use 2 nodes 
for a 3 node deployment, is that what you want to do?

The replica 3 arbiter 1 means you need 3 nodes, 2 nodes will have data, and 1 
node will have the checksum only (the arbiter).

On oVirt, 3 nodes is mandatory as minimum.

Marcos

From: p...@email.cz 
Sent: Wednesday, January 17, 2024 6:58 PM
To: users 
Subject: [External] : [ovirt-users] gluster on iSCSI devices in ovirt 
environment

hello dears,
can anybody explain  me HOWTO realize 2 nodes + aribiter gluster  from two 
(three)  locations on block iSCSI devices ?

Something like this:
gluster volume create  TEST replica 3 arbiter 1  < location-three-host3 - 
/dev/sda5 e.g. >  - ALL applied on multinode ovirt cluster

thx a lot for any help

regs.
Pa.
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[ovirt-users] Re: [External] : Migrating from a self hosted engine to standalone

[Marcos Sungaila]

Hi,

If you want to upgrade from 4.3 to 4.4, keeping the SHE deployment, you can use 
the steps outlined in the 
https://www.oracle.com/a/ocom/docs/olvm44/olvm-4.4-admin-guide.pdf, chapter 5. 
It describes the process for OLVM but is the same for oVirt.

Marcos

-Original Message-
From: red...@intheoutback.com  
Sent: Tuesday, January 9, 2024 7:15 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Migrating from a self hosted engine to 
standalone

Hi, I am in the process of moving our oVirt environment from a self hosted 
engine to a standalone engine on it's own HW. I have Googled and found a 
procedure for standalone > self hosted, but not the other way around. 

My current situation is that I have 5 locations running oVirt 4.3 with 3 to 4 
hypervisors and iSCSI storage backend, with a self hosted engine. All these 
locations are operational and short a downtime is acceptable if a must, losing 
a VM is NOT good.
I also have 1 oVirt environment 4.3 with 2 hypervisors and iSCSI backend that 
is my QA/Test.
All my networks are on internal networks with no outside world connections.

Most importantly, we are also looking at upgrading from 4.3 to 4.4

I have not found any straightforward way to migrate from self hosted to 
standalone.

My current plan is to do the following.
1) Create a new 4.4 standalone engine
2) Remove one hypervisor from the 4.3 cluster
3) Kickstart the hypervisor to RHEL 8.8 and configure ready for oVirt 4.4
4) Add the new host to the standalone engine.
5) Shutdown and export a number of VMs in the oVirt 4.3 and import them in to 
the new oVirt 4.4.
6) Repeat steps 2 > 5 until the everything is moved over.

Just wanting to get your expert opinions on this method or is there a much 
quicker easier method that will not risk the chances of losing the cluster/VMs 
or an extended outage.
Since we need to upgrade anyway from 4.3 to 4.4 I thought this the better 
method that upgrading the operational clusters.

Thanks
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[ovirt-users] Re: [External] : Re: Error: Host is not up, please check logs, perhaps also on the engine machine

[Marcos Sungaila]

Hi

Let me try something.

You sent some messages, but all of them needed more information.
You can send as many e-mails as you need, but it will help if you provide 
enough information to help us help you.

You didn’t say which OS version you use to deploy the hosted engine. Which 
oVirt version are you using?
The log you sent is the ansible log, not the deployment log. It should be 
better to send both if you want.
Also, a simple search for failed in your log shows your installation is missing 
some packages.

Regards
Marcos

From: Андрей Ваник 
Sent: Friday, March 17, 2023 9:39 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: Error: Host is not up, please check 
logs, perhaps also on the engine machine

I see errors in the Ovirt Engine VM.
In attach.

пт, 17 мар. 2023 г. в 12:37, Андрей Ваник 
mailto:stay...@gmail.com>>:
Hello,

We are trying to deploy ovirt hosted environment, but we are facing an error:
Host is not up, please check logs, perhaps also on the engine machine

Screenshots in attachment.

Please help.
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[ovirt-users] Re: [External] : Configure HA.

[Marcos Sungaila]

Please take a look at my previous reply.

> It’s possible have VM’s in HA.  Because when I does this test, I see this 
> issue.
> 
> “Highly Available VM  failed. It will be restarted automatically.”

The issue is trying to manage the hardware using the power management interface.
If you need to power off or reboot a KVM host, use the Management button in the 
Engine portal.
All HA configured VM will be restarted in another available KVM host.

Marcos
 
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[ovirt-users] Re: [External] : Configure HA.

[Marcos Sungaila]

Hi Anthony,

It is not an issue. This is the expected behavior. 
Using any Power Management interface to shut down or reboot the hardware will 
crash any running VM and be identified as a hardware outage.
The VMs instances recovery process in such a scenario is to boot the instance 
since all of them have crashed.
The only task that triggers a VM live migration is to put the host into 
Maintenance mode.

Regards,
Marcos

-Original Message-
From: Anthony Bustillos Gonzalez  
Sent: Thursday, February 23, 2023 1:01 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Configure HA.

Configure HA.

hello team, 

I'm working to create a cluster, I've 2 host with the same spectifications. I'm 
using ISCSI to conect 2 host to my storage.

Today everithing it's okay... but i have this issue.


Test.

When i migrated a vm to other Hosts this working.

when change the host active a maintance, the ovirt move de the vm's a other 
hosts.

Issue.

when turn off the host with idrac... the VM's in the host change the status 
active to unknow, then the hypervisor move the vms a other hosts but the vms 
are rebooted

any idea?
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[ovirt-users] Re: [External] : Migration failed due to an Error: Fatal error during migration

[Marcos Sungaila]

HI Anthony,

You need previous lines from the logs to identify the failure cause.
Sending only the final error message will not help to help you.
Inspect your logs and check the lines before this error.

Marcos

-Original Message-
From: Anthony Bustillos Gonzalez  
Sent: Thursday, February 9, 2023 3:07 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Migration failed due to an Error: Fatal 
error during migration

Hello, 

I have this issue, when I tried to migrate one VM to another host.

"Migration failed due to an Error: Fatal error during migration "

OS: VERSION=Oracle Linux "8.7"
Qemu: KVM 6.1.1

log 

2023-02-09 11:50:38,991-06 ERROR 
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] 
(EE-ManagedThreadFactory-engine-Thread-264062) [757bd45d] EVENT_ID: 
VM_MIGRATION_TO_SERVER_FAILED(120), Migration failed due to an Error: Fatal 
error during migration (VM: Coopavg-BDDESA01, Source: Coopavg-Moscow, 
Destination: Coopavg-Berlin).
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[ovirt-users] Re: [External] : Turn on my host

[Marcos Sungaila]

Hi Anthony,

I suppose you tried to turn the KVM host off using the Engine portal.
If using a direct ssh connection to the KVM host and issuing the "systemctl 
poweroff" or "reboot" commands, the Engine application will detect the reboot 
as a hardware failure.
In this scenario, the Engine cannot migrate instances to another KVM host.
To power down or reboot a KVM host, at first put it into Maintenance mode using 
the Engine portal.
Then you can power off or reboot the host using the Engine or through command 
line.

Regards,
Marcos

-Original Message-
From: Anthony Bustillos Gonzalez  
Sent: Saturday, February 11, 2023 12:06 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] Turn on my host

Hello,

I have a Cluster with two host, when i tried to turn off the host the VM's 
reboot the OS.  I need migrate the VMS in HA... how i cand do this ?
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[ovirt-users] Re: [External] : oVirt Installation in ESXi 7

[Marcos Sungaila]

Hi Mike,

I assume you are building a lab since using VMs to install a Virtualization 
Solution will not offer the minimum performance desired for the solution.
As a lab, I recommend you to use two VMs, one for the Engine installing it as a 
stand-alone Engine and the second to act as an hypervisor. Remember to 
configure nested virtualization for this VM on VMware.
When you get more familiar with oVirt, you can move to physical servers where 
installing the Self-Hosted-Engine will be easier.

Regards,
Marcos 

-Original Message-
From: mikejhatha...@gmail.com  
Sent: Tuesday, January 31, 2023 2:49 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] oVirt Installation in ESXi 7

Hi Folks,

Am a complete newbie with oVirt and am researching how to install in an ESXi 
server, the idea is to create a VM that runs the oVirt host and hosted engine 
with a virtual NFS server, I found the following but am not able to get the 
hoste engine VM to deploy, I am not seeing anything leaping out at me from the 
log file and was hoping that others may have experiences they can share?

https://urldefense.com/v3/__https://jorgedelacruz.uk/2021/07/26/ovirt-detailed-guide-on-how-to-deploy-and-configure-ovirt-on-top-of-vmware-vsphere-7-x/__;!!ACWV5N9M2RV99hQ!PFqx5RTGrChYWBxwz3lOBVVcCvAJPW4EvwF65q9BJDFBBQctrJQwyqnJcUZgZBNaWOP-9hLH40eNmXRMTPuioKc_T1M$
 

am also using 

https://urldefense.com/v3/__https://www.ovirt.org/documentation/installing_ovirt_as_a_self-hosted_engine_using_the_command_line/*Installing_the_self-hosted_engine_deployment_host_SHE_cli_deploy__;Iw!!ACWV5N9M2RV99hQ!PFqx5RTGrChYWBxwz3lOBVVcCvAJPW4EvwF65q9BJDFBBQctrJQwyqnJcUZgZBNaWOP-9hLH40eNmXRMTPuimSPSpv0$
 

TIA 

Mike
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[ovirt-users] Re: CPU Shares

[Marcos Sungaila]

Hi Nick,

Setting CPU Shares only changes how the instance works. It does not affect the 
current workload unless the instance is under pressure.
For example, if you are running an RDBMS, you may see a performance improvement 
when normalizing the database or generating a monthly report. Even that, the 
improvement may be minimum.
Do not expect a sensible performance improvement for normal operation.
Performance tuning is not magic. You will often perform many configurations to 
see a 1%, maybe 2% gain.

Regards,
Marcos

From: Nick --- 
Sent: Wednesday, February 1, 2023 9:59 AM
To: users@ovirt.org
Subject: [External] : [ovirt-users] CPU Shares

Hello,

I would like some help understanding CPU shares. We have several VMs which are 
CPU pinned due to licensing. We would like to favor one VM since it is our 
application VM over the other VMs which it is pinned with. Would I set the CPU 
share on the one that needs to priority to high or low?

In the documentation I see the following:

Specify CPU Shares. Possible options are Low, Medium, High, Custom, and 
Disabled. Virtual machines set to High receive twice as many shares as Medium, 
and virtual machines set to Medium receive twice as many shares as virtual 
machines set to Low. Disabled instructs VDSM to use an older algorithm for 
determining share dispensation; usually the number of shares dispensed under 
these conditions is 1020.

I currently have it set to high and I believe it is doing the opposite of what 
I want it to do as the CPU steal percentage appears to be 10-15% over the other 
VMs which show no CPU steal and are set to low. I'd like to confirm if I have 
this setup correctly or not.

Thanks,
Nick
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[ovirt-users] Re: [External] : oVirt Engine Web Console

[Marcos Sungaila]

Hi Mike,

The Engine dashboard is available on port 80/TCP redirecting to 443/TCP. VMs 
console access will be using port 6100/TCP.
From your description, you have the oVirt installed on a different LAN segment 
using VLANs. Can you check for any restrictions like firewall rules between 
your desktop and the oVirt VLAN?
Also, you can check for the required network ports at 
https://www.ovirt.org/documentation/installing_ovirt_as_a_standalone_manager_with_remote_databases/#RHV-manager-firewall-requirements_SM_remoteDB_deploy.

Regards,
Marcos

-Original Message-
From: mikejhatha...@gmail.com  
Sent: Wednesday, February 1, 2023 4:46 PM
To: users@ovirt.org
Subject: [External] : [ovirt-users] oVirt Engine Web Console

Hi Everyone,

Newbie here.

Ive managed to get an oVirt host and Engine installed, what I am not able to do 
is access the engine web console, is there a particular port I need to use?? 

Also, I am can only ping and access the engine host via SSH from hosts on the 
same VLan, the default GW is set correctly on the engine VM, not sure what is 
going on?

TIA

Mike
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[ovirt-users] Re: [External] : Re: Self-hosted-engine timeout and recovering time

[Marcos Sungaila]

Hi Did,

Thanks for your comments.
Yes, I do have redundancy for network and storage connections.
I`m testing a catastrophic scenario of losing all communication from a host and 
having a crashed host on which the SHE runs.
I intend to understand what to expect from running VMs and the Engine 
application. 
As you said, all VMs running on other hosts keep running without impacting them.
I will try to collect more information from the logs and understand the 
reference codes and constants you mentioned.
Thanks again for your help.

Marcos Sungaila

-Original Message-
From: Yedidyah Bar David  
Sent: Wednesday, September 21, 2022 2:46 AM
To: Marcos Sungaila 
Cc: users@ovirt.org
Subject: [External] : Re: [ovirt-users] Self-hosted-engine timeout and 
recovering time

On Wed, Sep 21, 2022 at 12:22 AM Marcos Sungaila  
wrote:
>
> Hi all,
>
> I have a cluster running the 4.4.10 release with 6 KVM hosts and 
> Self-Hosted-Engine.

What storage?

> I'm testing some network outage scenarios, and I faced strange behavior.

I suppose you have redundancy in your network.

It's important to clarify (for yourself, mainly) what exactly you test, what's 
important, what's expected, etc.

> After disconnecting the KVM hosts hosting the SHE, there was a long timeout 
> until switching the Self-Hosted-Engine to another host as expected.

I suggest studying the ha-agent logs, /var/log/ovirt-hosted-engine-ha/agent.log.

Much of the relevant code is in ovirt_hosted_engine_ha/agent/states.py
(in the git repo, or under /usr/lib/python3.6/site-packages/ on your machine).

> Also, there took a relatively long time to take over the HA VMs from the 
> failing server.

That's a separate issue, about which I personally know very little.
You might want to start a separate thread about it.

I do know, though, that if you keep the storage connected, the host might be 
able to keep updating VM leases on the storage. See e.g.:

https://urldefense.com/v3/__https://www.ovirt.org/develop/release-management/features/storage/vm-leases.html__;!!ACWV5N9M2RV99hQ!KF3i9SPDHIMQrdvgAH0oYZq2WWUuuJh_n-h9jSrpeG1Ppvek5ZamgKXusC2ixiZhSUmqaL8MCljMw1zY$
  

I didn't check the admin guide, but I suppose it has some material about HA VMs.

> Is there a configuration where I can reduce the SHE timeout to make this 
> recover process faster?

IIRC there is nothing user-configurable.

You can see most relevant constants in
ovirt_hosted_engine_ha/agent/constants.py{,.in}.
Nothing stops you from changing them, but please note that this is somewhat 
risky, and I strongly suggest to do very careful testing with your new 
settings. It might make sense to try to methodically go through all the 
possible state changes in the above state machine.

The general assumption is that network and storage, for critical setups, are 
redundant, and that the engine itself is not considered critical, in the sense 
that if it's dead, all your VMs are still alive. And also, that it's more 
important to not corrupt VM disk images (e.g. by starting the VM concurrently 
on two hosts) than to keep the VM alive.

Best regards,
--
Didi

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[ovirt-users] Self-hosted-engine timeout and recovering time

[Marcos Sungaila]

Hi all,

I have a cluster running the 4.4.10 release with 6 KVM hosts and 
Self-Hosted-Engine.
I'm testing some network outage scenarios, and I faced strange behavior. 
After disconnecting the KVM hosts hosting the SHE, there was a long timeout 
until switching the Self-Hosted-Engine to another host as expected.
Also, there took a relatively long time to take over the HA VMs from the 
failing server.
Is there a configuration where I can reduce the SHE timeout to make this 
recover process faster?

Regards, 
Marcos Sungaila
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[ovirt-users] Re: [External] : Importing KVMs and QCOW

[Marcos Sungaila]

Hi Abe,

You can upload the disk to the desired store domain and attach it to the guest 
you create. I do it regularly.
I upload the qcow2 image to the storage domain and attach it to the VM using 
the web interface.
Also, you upload the KVM guest disk as a template. 

Regards,
Marcos

-Original Message-
From: Abe E  
Sent: sexta-feira, 4 de março de 2022 15:10
To: users@ovirt.org
Subject: [External] : [ovirt-users] Importing KVMs and QCOW

Hey Everyone

So one thing that hasnt been clear for me is method for importing KVMs and QCOW 
images to ovirt.
I have had some success with importing some VMs in KVM format by building a VM 
of same size and then replacing the image file based on its disk ID.

My issue so far has been with some premade qcow and sometimes KVMs dont 
successfully work with the above method. Is it not possible to simply upload to 
the disk page in the GUI and attach it to the VM, what am I doing wrong here?

Thanks in advance
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[ovirt-users] Re: [External] : Does memory ballooning works if memory overcommit is disabled in the cluster

[Marcos Sungaila]

Hi Sohail,

Memory ballooning is enabled by checking the "Enable Memory Balloon 
Optimization" checkbox, which can keep VMs' performance.
If left unchecked, any pressure on host memory may trigger swap usage inside 
VMs.
You can leave it unchecked if you have more memory than assigned to all VMs.
Consider that memory ballooning and KSM are only used when a host reaches a 
certain amount of memory use. They are designed to keep your hosts' and VMs' 
performance, avoiding bottlenecks.
Even not setting an optimization policy (overcommit) for Servers or Desktops, 
enabling Memory Ballooning and KSM can keep your environment performance at its 
best.

Regards,
Marcos

-Original Message-
From: sohail_akht...@hotmail.com  
Sent: quinta-feira, 3 de março de 2022 09:34
To: users@ovirt.org
Subject: [External] : [ovirt-users] Does memory ballooning works if memory 
overcommit is disabled in the cluster

Hi All,

We have one ovirt 4.4 environment running. In Cluster Optimization settings we 
have checked  "None - Disable memory overcommit" Option in Memory Optimization. 
But Memory Balloon check box option is enabled. My understanding is that 
Ballooning only works when memory overcommit is enabled. If it is true then 
this check box should be disabled when we are not overcommitting memory. Or 
Still memory ballooning works even if we disabled memory overcommit. According 
to below link ballooning works when memory overcommit is enabled.

https://urldefense.com/v3/__https://lists.ovirt.org/pipermail/users/2017-October/084675.html__;!!ACWV5N9M2RV99hQ!btUtC1gE0b4bMk2jxdEm7z2A3ZElALd5bIiE6ssHaNJIljGQPS87bMindU3fWrU0Pfk$
 

Please let me know if any further information is required.

Many thanks. 

Regards
Sohail
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[ovirt-users] Re: [External] : Unrecoverable NMI error on HP Gen8 hosts.

[Marcos Sungaila]

Hi Diggy,

I'm not sure if it's an oVirt issue, but it can be a network or firewall issue. 
Did you test the connection between oVirt hosts and the iLO interfaces?
Simple tests like ping to ensure one host can reach others iLO interfaces and 
ipmitool to ensure you can connect to the management interfaces?

Marcos

-Original Message-
From: Diggy Mc  
Sent: quinta-feira, 30 de dezembro de 2021 15:02
To: users@ovirt.org
Subject: [External] : [ovirt-users] Unrecoverable NMI error on HP Gen8 hosts.


I have oVirt Node v4.4.8.3 running on several HP ProLiant Gen8 servers.  I 
receive the following error under certain circumstances:
"An Unrecoverable System Error (NMI) has occurred (iLO application watchdog 
timeout NMI, Service Information: 0x002B, 0x)"

When a host starts taking a load (but nowhere near a threshold), I encounter 
the above iLO-logged error and the host locks-up.  I have had to grossly 
under-utilize my hosts to avoid this problem.  I'm hoping for a better fix or 
work-around.

I've had the same problem beginning with my oVirt 4.3.x hosts, so it isn't 
oVirt version specific.

The little information I could find on the error wasn't helpful.  Red Hat 
acknowledges the issue, but limited to shutdown/reboot operations; not during 
"normal" operations.

Anyone else experienced this problem?  How did you fix it or work around it?  
I'd like to better utilize my servers if possible.

In advance, thank you to anyone and everyone who offers help.
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[ovirt-users] Re: Virt-sysprep --update --network

[Marcos Sungaila]

Hi Nathanaël,

With virt-sysprep, it is possible to install a package, update your template, 
activate a network connection, have SELinux relabel your system, and change 
other options.
Also is highly recommended to boot your template to ensure every last-minute 
change is working fine.
Before sealing the template, people use it to make all changes (update, package 
installation, user creation, network connections activation, etc…).
On the other hand, you can modify those options with virt-sysprep and launch an 
instance based on the template to validate your changes.
It is up to you to decide how to prepare your VM to seal/template it.

Regards,
Marcos

From: Nathanaël Blanchet 
Sent: segunda-feira, 15 de novembro de 2021 17:19
To: users@ovirt.org
Subject: [External] : [ovirt-users] Virt-sysprep --update --network

Hello,
As It is currently possible to seal a VM when templating with Sysprep, is it 
possible to extend virt-sysprep with other options as "--update --network" to 
update a qcow2 image with any hook?
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[ovirt-users] Re: [External] : about the password of the engine host and worker KVM hosts

[Marcos Sungaila]

Hi Tommy,

Yes, you can change root password on all hosts with no problem.
Your cluster will keep working fine.

Regards

Marcos

From: Tommy Sway 
Sent: sexta-feira, 17 de setembro de 2021 06:12
To: users@ovirt.org
Subject: [External] : [ovirt-users] about the password of the engine host and 
worker KVM hosts

I have successfully installed and deployed OLVM, where the Engine uses a 
separate physical server and the virtual machines work on other worker servers.
Due to the company's internal security policy, I now need to change the root 
user password for all servers. Is that ok?
Will cluster running be affected?

Thanks!


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[ovirt-users] Re: Time Drift Issues

[Marcos Sungaila]

Hi Nur,

Yes, oVirt Node comes with an NTP client installed and started. You need to 
configure the servers it will use as external sources.
Yes, it will be preserved in a host upgrade.

Regards,

Marcos

From: Nur Imam Febrianto 
Sent: quarta-feira, 8 de setembro de 2021 08:09
To: Marcos Sungaila ; oVirt Users 
Subject: [External] : RE: Time Drift Issues

Hi Marcos,

Want to clarify one thing. If I'm using and oVirt Node based host (not EL Linux 
Based), does it already configured with ntp client or can I just configure any 
ntp client on the host ? If I just configure ntp client on the host either 
chronyc or ntpd, will it persist after upgrading the node ?

Thanks before.

Regards,
Nur Imam Febrianto

Sent from 
Mail<https://urldefense.com/v3/__https:/go.microsoft.com/fwlink/?LinkId=550986__;!!ACWV5N9M2RV99hQ!c2QrTQKBLCmKD7CymaMmV6DWIZhqoIX0a0_SuoptGaTU73TPr6NPtmUYLSdspQjAarA$>
 for Windows

From: Marcos Sungaila<mailto:marcos.sunga...@oracle.com>
Sent: Tuesday, 07 September 2021 20:54
To: Nur Imam Febrianto<mailto:nur_i...@outlook.com>; oVirt 
Users<mailto:users@ovirt.org>
Subject: RE: Time Drift Issues

Hi Nur,

ntpd has a 300sec limit for synchronization. If you want a more flexible NTP 
client, use chronyd.
If you prefer to use ntpd, you should have ntpdate as a boot client and ntpd as 
a runtime client.
When the server boots, the ntpdate client will sync time no matter the 
difference. As a boot client, it runs only once and exits. Then the ntpd 
service starts, and keep your server clock in sync with an external source.
On distributions like CentOS and similar, ntpdate reads the external time 
sources configuration from ntpd.conf. You should need booth packages and 
services installed and enabled:
I prefer chronyd since it does not need any extra service or procedure to keep 
clock synchronization.

Regards,
Marcos

From: Nur Imam Febrianto mailto:nur_i...@outlook.com>>
Sent: terça-feira, 7 de setembro de 2021 01:08
To: oVirt Users mailto:users@ovirt.org>>
Subject: [External] : [ovirt-users] Time Drift Issues

Hi All,

Recently I got an warning in our cluster about time drift :
Host x has time-drift of 672 seconds while maximum configured value is 300 
seconds.

What should I do to address this issue ? Should I reconfigure / configure ntp 
client on all host ?

Thanks before.

Regards,
Nur Imam Febrianto

Sent from 
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 for Windows


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[ovirt-users] Re: [External] : Re: Poor gluster performances over 10Gbps network

[Marcos Sungaila]

Hi Mathieu,

Using dd for disk performance tests is not recommended. Besides needing oflag 
and iflag options, dd will perform a sequential write what is not a real 
scenario,
To evaluate your servers, use fio or bonnie++ for performance tests.
These applications will play a more realistic scenario to validate your 
environment.

Regards,

Marcos

From: Staniforth, Paul 
Sent: quarta-feira, 8 de setembro de 2021 08:17
To: Mathieu Valois ; users 
Subject: [External] : [ovirt-users] Re: Poor gluster performances over 10Gbps 
network



Hi Mathieu,
   with a linux VM using dd without the oflag=sync will 
mean it's using disk bufffers, hence the faster thoughput at the beginning 
until the buffers are full.


Regards,
   Paul S.




From: Mathieu Valois mailto:mval...@teicee.com>>
Sent: 08 September 2021 11:56
To: Staniforth, Paul 
mailto:p.stanifo...@leedsbeckett.ac.uk>>; 
users mailto:users@ovirt.org>>
Subject: Re: [ovirt-users] Poor gluster performances over 10Gbps network


Caution External Mail: Do not click any links or open any attachments unless 
you trust the sender and know that the content is safe.

Hi Paul,

thank you for your answer.

Indeed I did a `dd` inside a VM to measure the Gluster disk performance. I've 
also tried `dd` on an hypervisor writing into one of the replicated gluster 
bricks, which gives good performances (similar to logical volume ones).


Le 08/09/2021 à 12:51, Staniforth, Paul a écrit :

Hi Mathieu,
How are you measuring the Gluster disk performance?
also using dd you should use the

oflag=dsync

to avoid buffer caching.


Regards,

Paul S

From: Mathieu Valois 
Sent: 08 September 2021 10:12
To: users 
Subject: [ovirt-users] Poor gluster performances over 10Gbps network


Caution External Mail: Do not click any links or open any attachments unless 
you trust the sender and know that the content is safe.

Sorry for double post but I don't know if this mail has been received.

Hello everyone,

I know this issue was already treated on this mailing list. However none of the 
proposed solutions is satisfying me.

Here is my situation : I've got 3 hyperconverged gluster ovirt nodes, with 6 
network interfaces, bounded in bunches of 2 (management, VMs and gluster). The 
gluster network is on a dedicated bound where the 2 interfaces are directly 
connected to the 2 other ovirt nodes. Gluster is apparently using it :

# gluster volume status vmstore
Status of volume: vmstore
Gluster process TCP Port  RDMA Port  Online  Pid
--
Brick gluster-ov1:/gluster_bricks
/vmstore/vmstore49152 0  Y   3019
Brick gluster-ov2:/gluster_bricks
/vmstore/vmstore49152 0  Y   3009
Brick gluster-ov3:/gluster_bricks
/vmstore/vmstore

where 'gluster-ov{1,2,3}' are domain names referencing nodes in the gluster 
network. This networks has 10Gbps capabilities :

# iperf3 -c gluster-ov3
Connecting to host gluster-ov3, port 5201
[  5] local 10.20.0.50 port 46220 connected to 10.20.0.51 port 5201
[ ID] Interval   Transfer Bitrate Retr  Cwnd
[  5]   0.00-1.00   sec  1.16 GBytes  9.92 Gbits/sec   17900 KBytes
[  5]   1.00-2.00   sec  1.15 GBytes  9.90 Gbits/sec0900 KBytes
[  5]   2.00-3.00   sec  1.15 GBytes  9.90 Gbits/sec4996 KBytes
[  5]   3.00-4.00   sec  1.15 GBytes  9.90 Gbits/sec1996 KBytes
[  5]   4.00-5.00   sec  1.15 GBytes  9.89 Gbits/sec0996 KBytes
[  5]   5.00-6.00   sec  1.15 GBytes  9.90 Gbits/sec0996 KBytes
[  5]   6.00-7.00   sec  1.15 GBytes  9.90 Gbits/sec0996 KBytes
[  5]   7.00-8.00   sec  1.15 GBytes  9.91 Gbits/sec0996 KBytes
[  5]   8.00-9.00   sec  1.15 GBytes  9.90 Gbits/sec0996 KBytes
[  5]   9.00-10.00  sec  1.15 GBytes  9.90 Gbits/sec0996 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval   Transfer Bitrate Retr
[  5]   0.00-10.00  sec  11.5 GBytes  9.90 Gbits/sec   22 sender
[  5]   0.00-10.04  sec  11.5 GBytes  9.86 Gbits/sec  receiver

iperf Done.

However, VMs stored on the vmstore gluster volume has poor write performances, 
oscillating between 100KBps and 30MBps. I almost always observe a write spike 
(180Mbps) at the beginning until around 500MB written, then it drastically 
falls at 10MBps, sometimes even less (100KBps). Hypervisors have 32 threads (2 
sockets, 8 cores per socket, 2 threads per core).

Here is the volume settings :

Volume Name: vmstore
Type: Replicate
Volume ID: XXX
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: gluster-ov1:/gluster_bricks/vmstore/vmstore
Brick2: 

[ovirt-users] Re: Time Drift Issues

[Marcos Sungaila]

Hi Nur,

ntpd has a 300sec limit for synchronization. If you want a more flexible NTP 
client, use chronyd.
If you prefer to use ntpd, you should have ntpdate as a boot client and ntpd as 
a runtime client.
When the server boots, the ntpdate client will sync time no matter the 
difference. As a boot client, it runs only once and exits. Then the ntpd 
service starts, and keep your server clock in sync with an external source.
On distributions like CentOS and similar, ntpdate reads the external time 
sources configuration from ntpd.conf. You should need booth packages and 
services installed and enabled:
I prefer chronyd since it does not need any extra service or procedure to keep 
clock synchronization.

Regards,
Marcos

From: Nur Imam Febrianto 
Sent: terça-feira, 7 de setembro de 2021 01:08
To: oVirt Users 
Subject: [External] : [ovirt-users] Time Drift Issues

Hi All,

Recently I got an warning in our cluster about time drift :
Host x has time-drift of 672 seconds while maximum configured value is 300 
seconds.

What should I do to address this issue ? Should I reconfigure / configure ntp 
client on all host ?

Thanks before.

Regards,
Nur Imam Febrianto

Sent from 
Mail
 for Windows

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[ovirt-users] Re: [External] : Fencing ilo4

[Marcos Sungaila]

Hi,

You can only use the test feature through the Administration Portal after 
having one KVM host up and running.
So, for the fence feature to work properly, your oVirt environment needs to 
have, at least, two hosts.
The correct procedure is:
- add kvm host1;
- add kvm host2 and configure its power management and test, if you wish;
- go back to kvm host1 and configure its power management and test.

The test fails with only one kvm host because the fence feature is designed to 
be executed by another host and the test simulates a real scenario.

Marcos

-Original Message-
From: branimirklar...@gmail.com  
Sent: sexta-feira, 27 de agosto de 2021 09:25
To: users@ovirt.org
Subject: [External] : [ovirt-users] Fencing ilo4

Hi 
This thread points to the same thing but there's no solution. 
https://urldefense.com/v3/__https://lists.ovirt.org/archives/list/users@ovirt.org/message/CGHM7K2DJH76MQSDYNBNXI4LXUU7IHHS/__;!!ACWV5N9M2RV99hQ!drPEJEJ_67IzvPn2Xax2Q1osALY0e7qhGEv2mWej1OvOeBNT3rgoIpf09g0buo2gm14$
 
I am seting up a new kvm environment. Oracle linux virtualization manager is 
up, kvm host prepared and I am trying to set up fencing with ilo4.

When adding via gui I get 
ERROR [org.ovirt.engine.core.bll.pm.FenceProxyLocator] (default task-12) 
[62fc5810-5d9a-4baf-b1a7-983da8d039fc] Can not run fence action on host 'kvm1', 
no suitable proxy host was found.
I left options blank but tried privlvl=operator,lanplus=on and nothing.


Test via cli works fine.
[root@kvm1 lib]# fence_ilo4 -a 192.168.9.98 -l Administrator -p ***-v -o status
2021-08-27 14:18:56,815 INFO: Executing: /usr/bin/ipmitool -I lanplus -H 
192.168.9.98 -p 623 -U Administrator -P [set] -L ADMINISTRATOR chassis power 
status
2021-08-27 14:18:56,982 DEBUG: 0 Chassis Power is on
Status: ON

Error message because of that.
Health check on Host kvm1 indicates that future attempts to Stop this host 
using Power-Management are expected to fail.

Can anyone help?
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[ovirt-users] Re: [External] : Re: about the hugepage setting of the KVM server

[Marcos Sungaila]

Hi Tommy,

I have no simple answer to your question since I did not need this before, but 
some questions may help us understand how it is currently working.
1st- Are you using an ovirt-node or an OS+vdsm as a hypervisor?
2nd- Did you enabled huge pages on the VM OS?
3rd- Did you check on the hypervisor OS if transparent hugepages (THP) is 
enabled? And if, after enabling/configuring hugepages in the VM, it is 
reporting hugepages are in use in the host?

Marcos

From: Tommy Sway 
Sent: quinta-feira, 26 de agosto de 2021 04:49
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: about the hugepage setting of the KVM 
server

Anyone can help me ?

From: users-boun...@ovirt.org 
mailto:users-boun...@ovirt.org>> On Behalf Of Tommy 
Sway
Sent: Thursday, August 26, 2021 12:27 AM
To: users@ovirt.org
Subject: [ovirt-users] about the hugepage setting of the KVM server

Hi:

I am running virtual machines on the KVM servers of oVirt env. The virtual 
machine is running  database, which needs to set the memory huge page on the 
OPERATING system of the virtual machine.
If I need to set the huge page on the VIRTUAL machine, do I also need to set 
huge page on the KVM physical machine? Or just on the virtual machine?

What best practices do you recommend?

Thank you very much!
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[ovirt-users] Re: [External] : Injecting VirtIO drivers : Query

[Marcos Sungaila]

Hi Kris,

The VirtIO drivers' injection is necessary to use high-performance devices like 
virtIO disks (virtio or virtio-SCSI) and virtio network interfaces.
If planning to use emulated devices, these drivers are not necessary.
In general, I do not import VMs to OpenStack. I prepare my specific OpenStack 
instances (Linux, Windows, and Solaris ) using a KVM host and installing virtio 
native drivers.
For migration, you can install the VirtIO drivers before exporting VMs or use 
this injection process.
Regarding importing a multi-disk instance into OpenStack, you may refer to 
glance documentation. But, as you are migrating a VM, I think this process will 
be an exception to importing disk by disk and adding it manually to your new 
OpenStack instance.

Marcos

From: KK CHN 
Sent: quarta-feira, 25 de agosto de 2021 07:15
To: users 
Subject: [External] : [ovirt-users] Injecting VirtIO drivers : Query

Hi,

I am in the process of importing  multi disk  Windows VMs from   HyperV   
environment to   my  OpenStack Setup( Ussuri version, glance and QEMU-KVM )

I am referring online documents as  in the trailing lines.   But Is this 
relevant to inject  VirtIO drivers to the Windows VMs ( as the articles date 
back to 2015) .Some where it  mentions when you perform P2V  migration its 
necessary.

Is this VirtIO injection is necessary in my case ?  I am exporting from HyperV 
and importing to OpenStack.

1. Kindly advise me the relevance of VirtIO injection and is it applicable to 
my requirements.

2. Is there any  uptodate reference materials link for performing Windows 
Multidisk VM importing to OpenStack(ussurin, glance and KVM) .  Or Am I doing 
an impossible thing by beat around the bush ?


These are the links which I referred but it too old :  So the relevance of the 
contents still applicable ?   ( Windows VMs are   Windows 2012 Server, 2008 and 
2003 which I need to import to OpenStack)

https://superuser.openstack.org/articles/how-to-migrate-from-vmware-and-hyper-v-to-openstack/

https://portal.nutanix.com/page/documents/kbs/details?targetId=kA00e00kAWeCAM

Kris
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[ovirt-users] Re: [External] : Re: what difference between the Cloud-Init Network Protocol options ?

[Marcos Sungaila]

Once the KVM host is part of an oVirt cluster, many interactions come from the 
VDSM service.
It would help if you used a different KVM host for this kind of procedure.

Marcos

-Original Message-
From: Tommy Sway  
Sent: terça-feira, 24 de agosto de 2021 14:10
To: Marcos Sungaila ; 'Liran Rotenberg' 

Cc: users@ovirt.org
Subject: [ovirt-users] Re: [External] : Re: what difference between the 
Cloud-Init Network Protocol options ?

If so, can I still run it on KVM Server fn the oVirt platform?
It seems that a lot of oVirt's configuration information is not stored in 
QUEMU's configuration file like ordinary KVM SERVER, but in the database. Does 
this still work?



-Original Message-
From: Marcos Sungaila 
Sent: Wednesday, August 25, 2021 12:55 AM
To: Liran Rotenberg ; Tommy Sway 
Cc: users@ovirt.org
Subject: RE: [External] : [ovirt-users] Re: what difference between the 
Cloud-Init Network Protocol options ?

One important thing, you run the virt-sysprep command on the KVM host 
indicating the VM name to seal, you do not run it inside a VM.
It is not like the sysprep command on a Windows machine.

Marcos

-Original Message-
From: Liran Rotenberg 
Sent: terça-feira, 24 de agosto de 2021 12:56
To: Tommy Sway 
Cc: users@oVirt.org
Subject: [External] : [ovirt-users] Re: what difference between the Cloud-Init 
Network Protocol options ?

On Tue, Aug 24, 2021 at 7:36 AM Tommy Sway  wrote:
>
> Thank you very much!
>
>
>
> However, if you use virt-Sysprep, you need to use this tool to complete 
> template creation inside the VM to be created. Using oVirt's own template 
> encapsulation option, however, does not require you to log in to the VM to 
> run similar commands. It's just that using the Virt-Sysprep tool gives you 
> more autonomy and options to choose from, whereas oVirt's own template 
> encapsulation options are fixed and you can't personalize more options.
>
>
>
> Am I getting that right?
Yes, ovirt manages your environment and such does for you some of the 
operations to ease you from doing it manually.
When you create a template in ovirt you may or may not set the sealing option. 
In the bottom line it will run virt-sysprep with the parameters we thought are 
right.
Note the documentation in the thread, for windows OS you will need to do it 
manually.
>
>
>
>
>
>
>
> From: users-boun...@ovirt.org  On Behalf Of 
> Liran Rotenberg
> Sent: Monday, August 23, 2021 5:23 PM
> To: Tommy Sway 
> Cc: users@ovirt.org
> Subject: [ovirt-users] Re: what difference between the Cloud-Init Network 
> Protocol options ?
>
>
>
>
>
> On Sun, Aug 22, 2021 at 7:56 PM Tommy Sway  wrote:
> >
> > I have read the document you gave me, but can you list what specific 
> > information was deleted by the sealing action?
> Yes, it was more about how to do it.
>
> Here are some more detailed links:
> https://urldefense.com/v3/__https://www.ovirt.org/develop/release-mana
> gement/features/virt/virt-sysprep.html__;!!ACWV5N9M2RV99hQ!ftpwz3RmG6i
> sDe4U_lLChsyamYgXLauWNhglwbS9fr0p-walSmLU6F8JySXdze6OUMY$
>
>
>
> Our linux sealing uses virt-sysprep:
>
> https://urldefense.com/v3/__https://libguestfs.org/virt-sysprep.1.html
> __;!!ACWV5N9M2RV99hQ!ftpwz3RmG6isDe4U_lLChsyamYgXLauWNhglwbS9fr0p-walS
> mLU6F8JySXdosCfIz8$
>
>
>
> As for windows:
>
> https://urldefense.com/v3/__https://docs.microsoft.com/en-us/windows-h
> ardware/manufacture/desktop/sysprep--generalize--a-windows-installatio
> n__;!!ACWV5N9M2RV99hQ!ftpwz3RmG6isDe4U_lLChsyamYgXLauWNhglwbS9fr0p-wal
> SmLU6F8JySXdXvrseps$
> >
> >
> >
> > Thanks!
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > From: Liran Rotenberg 
> > Sent: Sunday, August 22, 2021 11:33 PM
> > To: Tommy Sway 
> > Cc: Eitan Raviv ; users@ovirt.org
> > Subject: Re: [ovirt-users] Re: what difference between the Cloud-Init 
> > Network Protocol options ?
> >
> >
> >
> >
> >
> > On Sun, Aug 22, 2021 at 5:54 PM Tommy Sway  wrote:
> > >
> > > I see. Can I just ask again, I've seen this option when you're referring 
> > > to sealed Linux, but I don't understand what it means? What is a sealed 
> > > Linux, and how is it different from a non-sealed Linux? Can you explain, 
> > > thank you!
> > >
> > Usually you make a template sealed and create multiple VMs from it. The 
> > sealing is clearing system specific details.
> > You may find this link handy for sealing:
> > https://urldefense.com/v3/__https://access.redhat.com/documentation/
> > en-us/red_hat_virtualization/4.4/html/virtual_machine_management_gui
> > de/chap-templates__;!!ACWV5N9M2RV99hQ!ftpwz3

[ovirt-users] Re: [External] : about the network name rules on CentOS/Redhat 8 and the cloud-init network interface name

[Marcos Sungaila]

You have two options:
- If installing the VM using a pxe environment/network server,  you can add 
this options as kernel_extra boot options at the Run Once install procedure.
- if installing the VM using an ISO image, edit the install menu entry and add 
this option at the end of line.

Marcos

-Original Message-
From: Tommy Sway  
Sent: terça-feira, 24 de agosto de 2021 11:34
To: Marcos Sungaila ; users@ovirt.org
Subject: [ovirt-users] Re: [External] : about the network name rules on 
CentOS/Redhat 8 and the cloud-init network interface name

Thank you!

But where to set in on oVirt Platform when I create the VM ?



-Original Message-
From: Marcos Sungaila 
Sent: Tuesday, August 24, 2021 9:10 PM
To: Tommy Sway ; users@ovirt.org
Subject: RE: [External] : [ovirt-users] about the network name rules on 
CentOS/Redhat 8 and the cloud-init network interface name

The naming convention is called BiosDevName and was introduced in kernel 
2.6.27. It is defined by the OS kernel you are using in the guest. It is not 
related to oVirt itself or the KVM host.
In my case, I install my VMs passing "biosdevname=0 net.ifnames=0" during the 
OS installation process, so all my VMs have ethX name style to make it easier 
to use cloud-init and other scripts.

Marcos

From: Tommy Sway 
Sent: terça-feira, 24 de agosto de 2021 05:57
To: users@ovirt.org
Subject: [External] : [ovirt-users] about the network name rules on 
CentOS/Redhat 8 and the cloud-init network interface name

Everybody is good!
As you all know, to use the client's network card name in cloud-init, you must 
fill in the exact name of the network card interface. 
This was easy in version 7 and before, which usually started with EN0. 

After version 8, however, the naming conventions for network cards changed a 
lot. In my own test environment, for example, I started with ENS3.
I'm not sure what naming convention it uses, which would make it impossible to 
specify nic information using cloud-init. 

Could you help me explain how to deal with this problem?
Thank you very much!

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[ovirt-users] Re: [External] : Re: what difference between the Cloud-Init Network Protocol options ?

[Marcos Sungaila]

One important thing, you run the virt-sysprep command on the KVM host 
indicating the VM name to seal, you do not run it inside a VM.
It is not like the sysprep command on a Windows machine.

Marcos

-Original Message-
From: Liran Rotenberg  
Sent: terça-feira, 24 de agosto de 2021 12:56
To: Tommy Sway 
Cc: users@oVirt.org
Subject: [External] : [ovirt-users] Re: what difference between the Cloud-Init 
Network Protocol options ?

On Tue, Aug 24, 2021 at 7:36 AM Tommy Sway  wrote:
>
> Thank you very much!
>
>
>
> However, if you use virt-Sysprep, you need to use this tool to complete 
> template creation inside the VM to be created. Using oVirt's own template 
> encapsulation option, however, does not require you to log in to the VM to 
> run similar commands. It's just that using the Virt-Sysprep tool gives you 
> more autonomy and options to choose from, whereas oVirt's own template 
> encapsulation options are fixed and you can't personalize more options.
>
>
>
> Am I getting that right?
Yes, ovirt manages your environment and such does for you some of the 
operations to ease you from doing it manually.
When you create a template in ovirt you may or may not set the sealing option. 
In the bottom line it will run virt-sysprep with the parameters we thought are 
right.
Note the documentation in the thread, for windows OS you will need to do it 
manually.
>
>
>
>
>
>
>
> From: users-boun...@ovirt.org  On Behalf Of 
> Liran Rotenberg
> Sent: Monday, August 23, 2021 5:23 PM
> To: Tommy Sway 
> Cc: users@ovirt.org
> Subject: [ovirt-users] Re: what difference between the Cloud-Init Network 
> Protocol options ?
>
>
>
>
>
> On Sun, Aug 22, 2021 at 7:56 PM Tommy Sway  wrote:
> >
> > I have read the document you gave me, but can you list what specific 
> > information was deleted by the sealing action?
> Yes, it was more about how to do it.
>
> Here are some more detailed links:
> https://urldefense.com/v3/__https://www.ovirt.org/develop/release-mana
> gement/features/virt/virt-sysprep.html__;!!ACWV5N9M2RV99hQ!ftpwz3RmG6i
> sDe4U_lLChsyamYgXLauWNhglwbS9fr0p-walSmLU6F8JySXdze6OUMY$
>
>
>
> Our linux sealing uses virt-sysprep:
>
> https://urldefense.com/v3/__https://libguestfs.org/virt-sysprep.1.html
> __;!!ACWV5N9M2RV99hQ!ftpwz3RmG6isDe4U_lLChsyamYgXLauWNhglwbS9fr0p-walS
> mLU6F8JySXdosCfIz8$
>
>
>
> As for windows:
>
> https://urldefense.com/v3/__https://docs.microsoft.com/en-us/windows-h
> ardware/manufacture/desktop/sysprep--generalize--a-windows-installatio
> n__;!!ACWV5N9M2RV99hQ!ftpwz3RmG6isDe4U_lLChsyamYgXLauWNhglwbS9fr0p-wal
> SmLU6F8JySXdXvrseps$
> >
> >
> >
> > Thanks!
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > From: Liran Rotenberg 
> > Sent: Sunday, August 22, 2021 11:33 PM
> > To: Tommy Sway 
> > Cc: Eitan Raviv ; users@ovirt.org
> > Subject: Re: [ovirt-users] Re: what difference between the Cloud-Init 
> > Network Protocol options ?
> >
> >
> >
> >
> >
> > On Sun, Aug 22, 2021 at 5:54 PM Tommy Sway  wrote:
> > >
> > > I see. Can I just ask again, I've seen this option when you're referring 
> > > to sealed Linux, but I don't understand what it means? What is a sealed 
> > > Linux, and how is it different from a non-sealed Linux? Can you explain, 
> > > thank you!
> > >
> > Usually you make a template sealed and create multiple VMs from it. The 
> > sealing is clearing system specific details.
> > You may find this link handy for sealing:
> > https://urldefense.com/v3/__https://access.redhat.com/documentation/
> > en-us/red_hat_virtualization/4.4/html/virtual_machine_management_gui
> > de/chap-templates__;!!ACWV5N9M2RV99hQ!ftpwz3RmG6isDe4U_lLChsyamYgXLa
> > uWNhglwbS9fr0p-walSmLU6F8JySXdFW1of34$
> > >
> > >
> > > -Original Message-
> > > From: Liran Rotenberg 
> > > Sent: Sunday, August 22, 2021 10:46 PM
> > > To: Tommy Sway 
> > > Cc: Eitan Raviv ; users@ovirt.org
> > > Subject: Re: [ovirt-users] Re: what difference between the Cloud-Init 
> > > Network Protocol options ?
> > >
> > > On Sun, Aug 22, 2021 at 2:05 PM Tommy Sway  wrote:
> > > >
> > > > What I want to know is if I use openstack metadata, do I need to 
> > > > configure any additional information related to openstack?  For 
> > > > example, do I need to set up an openstack node as an external provider 
> > > > to use cloud-init services based on it?
> > > >
> > > Not that I am aware of. It's just the protocol cloud-init will read the 
> > > network information provided.
> > > You can set it via API/UI. Or, to set it within the custom script.
> > > Bottom line you need:
> > > A VM with cloud-init installed, service is running and enabled.
> > > Set the configuration you wish to set.
> > > If it's a first boot (usually a sealed VM) you can run the VM as you wish.
> > > If it's not the first boot, you will need to set the configuration within 
> > > the Run-Once and run the VM as Run-Once.
> > >
> > > I hope it helps to your question,
> > > Liran
> > > >
> > > >
> > > >
> > > > -Original Message-
> > > > From: 

[ovirt-users] Re: [External] : Re: Backup to tape

[Marcos Sungaila]

Also Veeam announced oVirt support last May.
I did see anyone using or testing Veeam on OLVM or oVirt.

Marcos

-Original Message-
From: Tony Brian Albers  
Sent: terça-feira, 24 de agosto de 2021 05:50
To: dupar...@esrf.fr; users@ovirt.org
Subject: [External] : [ovirt-users] Re: Backup to tape

Hiya,

The API in oVirt engine actually supports creating snapshots etc. for backups. 
Check out github for scripts, i.e.:

https://urldefense.com/v3/__https://github.com/luisperezmarin/oVirtVMBackup__;!!ACWV5N9M2RV99hQ!aLktcN2ZyTyy0Qa70UDbLPzKdU3VKYHfL6zBVWy0NNo0M8tkjN1NVxSDMfDmLnboxA8$
 

And there are others.

There is also a commercial solution, Storware vProtect: 
https://urldefense.com/v3/__https://storware.eu/products/vprotect/__;!!ACWV5N9M2RV99hQ!aLktcN2ZyTyy0Qa70UDbLPzKdU3VKYHfL6zBVWy0NNo0M8tkjN1NVxSDMfDmRkqO_-g$
 

And as far as backup systems go, bareos(open source) is an ok solution, and it 
also support oVirt: 
https://urldefense.com/v3/__https://www.bareos.com/__;!!ACWV5N9M2RV99hQ!aLktcN2ZyTyy0Qa70UDbLPzKdU3VKYHfL6zBVWy0NNo0M8tkjN1NVxSDMfDmIqMmq8s$
 

HTH

/tony

dupar...@esrf.fr wrote:
> Hi,
> 
> Part of our Disaster Recovery Plan we do tape backup.
> 
> Our previous infrastructure was Oracle VM and VMs fisk were files (.img) we 
> could apply filters to our tar and backup to tape only required files.
> 
> Now preparing the migration to Oracle flavor of oVirt (OLVM).
> VMs disks are LVM partitions, within  an iSCSI LUNs.
> 
> I've tested "dd" to backup  the entire iSCSI LUN to the tape. Seems OK 
> ,providing the right block size we achieve reasonable performances.
> Though I don't quite see how to have that granular backup we had, in a simple 
> manner, which a goal too.
> 
> Although there is compression at the LTO level, the dd conv=sparse parameter 
> may speed-up things. To be tested.
> I'm just wondering if conv=sparse may breaks things at the LVM / qcow2 
> containers ?
> 
> 
> 
> 
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> 


--
Tony Albers - Systems Architect - Data Department, Royal Danish Library, Victor 
Albecks Vej 1, 8000 Aarhus C, Denmark
Tel: +45 2566 2383 - CVR/SE: 2898 8842 - EAN: 5798000792142 
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[ovirt-users] Re: [External] : about the network name rules on CentOS/Redhat 8 and the cloud-init network interface name

[Marcos Sungaila]

The naming convention is called BiosDevName and was introduced in kernel 
2.6.27. It is defined by the OS kernel you are using in the guest. It is not 
related to oVirt itself or the KVM host.
In my case, I install my VMs passing "biosdevname=0 net.ifnames=0" during the 
OS installation process, so all my VMs have ethX name style to make it easier 
to use cloud-init and other scripts.

Marcos

From: Tommy Sway  
Sent: terça-feira, 24 de agosto de 2021 05:57
To: users@ovirt.org
Subject: [External] : [ovirt-users] about the network name rules on 
CentOS/Redhat 8 and the cloud-init network interface name

Everybody is good!
As you all know, to use the client's network card name in cloud-init, you must 
fill in the exact name of the network card interface. 
This was easy in version 7 and before, which usually started with EN0. 

After version 8, however, the naming conventions for network cards changed a 
lot. In my own test environment, for example, I started with ENS3.
I'm not sure what naming convention it uses, which would make it impossible to 
specify nic information using cloud-init. 

Could you help me explain how to deal with this problem?
Thank you very much!
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[ovirt-users] Re: [External] : Re: Template for Ubuntu 18.04 Server Issues

[Marcos Sungaila]

Hi Miguel,

The virt-sysprep command seals a VM when building it on a standalone KVM host. 
Creating a template using the Make Template option in the VMs page 
automatically seals the VM during this process.
Anyway, in a standalone KVM host, gracefully shut down the VM and run the 
command as follows:

# virt-sysprep -d 

Regards,

Marcos

-Original Message-
From: Miguel Garcia  
Sent: segunda-feira, 23 de agosto de 2021 21:47
To: users@ovirt.org
Subject: [External] : [ovirt-users] Re: Template for Ubuntu 18.04 Server Issues

I have seen the same problem. Even confirmed that MAC address are different on 
VM's. I am using a DSHP server.

How do you use the virt-sysprep command? is executed from ovirt-master / vm? 
how do you select the template though?

I'm at the same point as you, not sure if this is expected behave or missing 
something.
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[ovirt-users] Re: [External] : Re: Is it possible to configure the wireless network card on the Linux host as the bridge to provide oVirt for use?

[Marcos Sungaila]

Tommy,

I remember I used the doc from Debian page as a starting point and adapted to 
Fedora.
I deactivated the NetworkManager on the WLAN interface and prepared many 
commands to add to rc.local.
I remember I had issues with routing when using NAT network (it was a KVM host 
only, not an oVirt instance) despite it woked fine with bridge connections.

I will look if I have a copy in my old backups. It was a long time ago.

Marcos

From: Tommy Sway 
Sent: segunda-feira, 23 de agosto de 2021 12:05
To: Marcos Sungaila ; 'wodel youchi' 

Cc: 'users' 
Subject: [ovirt-users] Re: [External] : Re: Is it possible to configure the 
wireless network card on the Linux host as the bridge to provide oVirt for use?

Thank you!

Could you give me some guide doc ?

Moreover, my use environment is only for testing functions and does not involve 
security issues. I just want to make full use of physical resources.




From: users-boun...@ovirt.org<mailto:users-boun...@ovirt.org> 
mailto:users-boun...@ovirt.org>> On Behalf Of Marcos 
Sungaila
Sent: Monday, August 23, 2021 9:13 PM
To: wodel youchi mailto:wodel.you...@gmail.com>>; Tommy 
Sway mailto:sz_cui...@163.com>>
Cc: users mailto:users@ovirt.org>>
Subject: [ovirt-users] Re: [External] : Re: Is it possible to configure the 
wireless network card on the Linux host as the bridge to provide oVirt for use?

Hi Tommy,

Two comments for your appreciation:

1st: Technically, it is possible. You can configure your wireless network as a 
bridge and use it as you wish. I did it in my laptop a long time ago to test 
KVM instances.
2nd: Taking security in focus, it is not a recommendation to use wireless cards 
in servers. Wireless connections can be easily attacked since there is no need 
for someone to have logical access to your server.

Regards,
Marcos

From: wodel youchi mailto:wodel.you...@gmail.com>>
Sent: domingo, 22 de agosto de 2021 07:13
To: Tommy Sway mailto:sz_cui...@163.com>>
Cc: users mailto:users@ovirt.org>>
Subject: [External] : [ovirt-users] Re: Is it possible to configure the 
wireless network card on the Linux host as the bridge to provide oVirt for use?

Hi,
In my little experience, no you can't, I tried that a while ago it didn't work, 
there is some old tutorial on Debian but it didn't work for me.
May be what you can do is share you wireless connexion with your wired 
connexion (where you can create your bridge). And play with the firewall to 
expose the ovirt webadmin-ui to your external network.

Regards.

Le dim. 22 août 2021 à 07:18, Tommy Sway 
mailto:sz_cui...@163.com>> a écrit :
Thanks!
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[ovirt-users] Re: [External] : Re: Is it possible to configure the wireless network card on the Linux host as the bridge to provide oVirt for use?

[Marcos Sungaila]

Hi Tommy,

Two comments for your appreciation:

1st: Technically, it is possible. You can configure your wireless network as a 
bridge and use it as you wish. I did it in my laptop a long time ago to test 
KVM instances.
2nd: Taking security in focus, it is not a recommendation to use wireless cards 
in servers. Wireless connections can be easily attacked since there is no need 
for someone to have logical access to your server.

Regards,
Marcos

From: wodel youchi 
Sent: domingo, 22 de agosto de 2021 07:13
To: Tommy Sway 
Cc: users 
Subject: [External] : [ovirt-users] Re: Is it possible to configure the 
wireless network card on the Linux host as the bridge to provide oVirt for use?

Hi,
In my little experience, no you can't, I tried that a while ago it didn't work, 
there is some old tutorial on Debian but it didn't work for me.
May be what you can do is share you wireless connexion with your wired 
connexion (where you can create your bridge). And play with the firewall to 
expose the ovirt webadmin-ui to your external network.

Regards.

Le dim. 22 août 2021 à 07:18, Tommy Sway 
mailto:sz_cui...@163.com>> a écrit :
Thanks!
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[ovirt-users] Re: [External] : Power management on Dell PowerEdge R320 and R520

[Marcos Sungaila]

Hi Pavel,

You can only test a fence device after having one active node at that cluster.
In other words, install/activate host1 and have it up and running.
Go to install host2 and configure Power Management for this host. Having host1 
already active it will be used to test host2 power management.
Go back to host1 and configure power management and test it too.

I know it looks weird but ovirt needs at least one active host to test power 
management of new hosts.

Marcos



De: Pavel Strzinek 
Enviado: sexta-feira, 14 de maio de 2021 04:59
Para: users@ovirt.org 
Assunto: [External] : [ovirt-users] Power management on Dell PowerEdge R320 and 
R520

Hello,
I am having trouble configuring fencing on these two servers with iDrac7 module 
from freshly installed oVirt 4.4.6. I tried drac5, drac7 and ipmilan modules 
and neither passes the test. I used ipmilan with option "lanplus=1", as noted 
in previous threads about idrac usage with oVirt/RHEV, but with no success. 
Also, I am successfully using ipmilan fencing from older oVirt 4.2 on several 
SuperMicro server nodes.

This is the error message in engine.log:
2021-05-14 09:28:41,185+02 ERROR 
[org.ovirt.engine.core.bll.pm.FenceProxyLocator] (default task-6) 
[12faf352-da4a-4b24-9ab9-af54559cecd1] Can not run fence action on host 
'onode1', no suitable proxy host was found.

I can successfully query the idrac module with ipmitool from command line on 
the node, using the same credentials.
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