I have a setup as detailed below
- iSCSI Storage Domain
- Template with Thin QCOW2 disk
- Multiple VMs from Template with Thin disk
oVirt Node 4.4.4
When the VMs boots up it downloads some data to it and that leads to
increase in volume size.
I see that every few seconds the VM gets paused with
"VM X has been paused due to no Storage space error."
and then after few seconds
"VM X has recovered from paused back to up"
Sometimes after a many pause and recovery the VM dies with
"VM X is down with error. Exit message: Lost connection with qemu process."
and I have to restart the VMs.
1. How to work around this dying VM?
2. Is there a way to use sparse disks without VM being paused again and
Thanks in advance.
We are currently running oVirt 4.3 and upgrade/migration to 4.4 won’t be possible for few more months.
I am looking into guidelines, how to, for setting up Grafana using DataWarehouse as data source.
Did anyone already did this, and would be willing to share the steps?
Kindly awaiting your reply.
kind regards/met vriendelijke groeten
Sr. System Engineer @ System Administration
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Hope you all are doing well.
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BI Associate Software Engineer
Red Hat <https://www.redhat.com/>
I'm testing what in object in a test env with novirt1 and novirt2 as hosts.
First reinstalled host is novirt2
For this I downloaded the 4.4.8 iso of the node:
before running the restore command for the first scratched node I
pre-installed the appliance rpm on it and I got:
I selected to pause an d I arrived here with local vm engine completing its
INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Add host]
[ INFO ] changed: [localhost]
[ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Include after_add_host
[ INFO ] You can now connect to
https://novirt2.localdomain.local:6900/ovirt-engine/ and check the status
of this host and eventually remediate it, please continue only when the
host is listed as 'up'
[ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : include_tasks]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Create temporary lock
[ INFO ] changed: [localhost]
[ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Pause execution until
/tmp/ansible.4_o6a2wo_he_setup_lock is removed, delete it once ready to
But connecting t the provided
I see that only the still 4.3.10 host results up while novirt2 is not
In engine.log I see
2021-08-25 09:14:38,548+02 ERROR
(EE-ManagedThreadFactory-engine-Thread-4) [5f4541ee] Command
'HostDevListByCapsVDSCommand(HostName = novirt2.localdomain.local,
execution failed: java.net.ConnectException: Connection refused
and continuouslly this message...
I also tried to restart vdsmd on novit2 but nothing changed.
Do I have to restart the HA daemons on novirt2?
I'm trying to decommission the old master storage domain in ovirt, and
replace it with a new one. All of the VMs have been migrated off of the
old master, and everything has been running on the new storage domain
for a couple months. But when I try to put the old domain into
maintenance mode I get an error.
Old Master: vm-storage-ssd
New Domain: vm-storage-ssd2
The error is:
Failed to Reconstruct Master Domain for Data Center EDC2
As well as:
Sync Error on Master Domain between Host daccs01 and oVirt Engine.
Domain: vm-storage-ssd is marked as Master in oVirt Engine database but
not on the Storage side. Please consult with Support on how to fix this
2021-07-28 11:41:34,870-07 WARN
(EE-ManagedThreadFactory-engine-Thread-23)  Master domain version is
not in sync between DB and VDSM. Domain vm-storage-ssd
marked as master, but the version in DB: 283 and in VDSM: 280
Not stopping SPM on vds daccs01, pool id
f72ec125-69a1-4c1b-a5e1-313fcb70b6ff as there are uncleared tasks Task
'5fa9edf0-56c3-40e4-9327-47bf7764d28d', status 'finished'
After a couple minutes all the domains are marked as active again and
things continue, but vm-storage-ssd is still listed as the master
domain. Any thoughts?
This is on 220.127.116.11-1.el7 on CentOS 7.
engine=# SELECT storage_name, storage_pool_id, storage, status FROM
storage_pool_with_storage_domain ORDER BY storage_name;
storage_name | storage_pool_id
| storage | status
compute1-iscsi-ssd | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
yvUESE-yWUv-VIWL-qX90-aAq7-gK0I-EqppRL | 1
compute7-iscsi-ssd | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
8ekHdv-u0RJ-B0FO-LUUK-wDWs-iaxb-sh3W3J | 1
export-domain-storage | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
d3932528-6844-481a-bfed-542872ace9e5 | 1
iso-storage | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
f800b7a6-6a0c-4560-8476-2f294412d87d | 1
vm-storage-7200rpm | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
a0bff472-1348-4302-a5c7-f1177efa45a9 | 1
vm-storage-ssd | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
95acd9a4-a6fb-4208-80dd-1c53d6aacad0 | 1
vm-storage-ssd2 | f72ec125-69a1-4c1b-a5e1-313fcb70b6ff |
829d0600-c3f7-4dae-a749-d7f05c6a6ca4 | 1
I managed a ovirt 4.4.7 for production systems.
Last week i removed the Master storage domain (moved tamplates, vm-s well, unattached, etc), but i forgot to move isos.
Now, when i upload a new iso to a data storage domain, the system show it, but it's unbootable:
"could not read from cdrom code 0005"
We are using oVirt for several years.
And we start with Xeon v2 CPUs.
At this moment of time we got all v3 aтв we will chnage them to v4 in a month.
So i would like to change Cluster default CPU to Haswell, But got error with custom cpu on HostedEngine.
HostedEngine config is locked.
Is there a solution to chnage HostedEngine cpu type?
P.S. some problem with Cluster compability version (4.5 4.6)