huge page in ovirt 4.2.7
by Fabrice Bacchella
I'm trying to understand huge page in oVirt, I'm quite sure to understand it well.
I have an host with 128GiB. I have configured reserved huge page:
cat /proc/cmdline
... hugepagesz=1GB hugepages=120
$ grep -r . /sys/kernel/mm/hugepages
/sys/kernel/mm/hugepages/hugepages-1048576kB/nr_overcommit_hugepages:0
/sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages:120
/sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages_mempolicy:120
/sys/kernel/mm/hugepages/hugepages-1048576kB/surplus_hugepages:0
/sys/kernel/mm/hugepages/hugepages-1048576kB/resv_hugepages:0
/sys/kernel/mm/hugepages/hugepages-1048576kB/free_hugepages:120
/sys/kernel/mm/hugepages/hugepages-2048kB/nr_overcommit_hugepages:0
/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages:0
/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages_mempolicy:0
/sys/kernel/mm/hugepages/hugepages-2048kB/surplus_hugepages:0
/sys/kernel/mm/hugepages/hugepages-2048kB/resv_hugepages:0
/sys/kernel/mm/hugepages/hugepages-2048kB/free_hugepages:0
I have a big VM running on it:
<custom_properties>
<custom_property>
<name>hugepages</name>
<value>64</value>
</custom_property>
</custom_properties>
<memory>68719476736</memory>, aka 65536 MiB
<memory_policy>
<guaranteed>34359738368</guaranteed>, aka 32768 MiB
<max>68719476736</max>
</memory_policy>
And it keep failing when I want to start it:
/var/log/ovirt-engine/engine.log:2018-11-14 12:56:06,937+01 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-66) [13c13a2c-f973-4ba2-b8bd-260e5b35a047] EVENT_ID: USER_FAILED_RUN_VM(54), Failed to run VM XXX due to a failed validation: [Cannot run VM. There is no host that satisfies current scheduling constraints. See below for details:, The host XXX did not satisfy internal filter HugePages because there are not enough free huge pages to run the VM.]
The huge page fs is mounted:
$ findmnt
| |-/dev/hugepages1G hugetlbfs hugetlbfs rw,relatime,pagesize=1G
| `-/dev/hugepages hugetlbfs hugetlbfs rw,relatime
What am I missing ?
2 years, 8 months
Networking - interface and security questions
by davidk＠riavera.com
Hello,
I'm trying to setup a new ovirt install and have run into some general issues that I hope someone can help with.
I'm somewhat new to ovirt (but not virtualization).
First off, I've been doing lots of reading and I can't seem to find what the generally accepted method is for firewalling access between networks and VMs is in ovirt? I see references to network filters, but no obvious ways to set ports or modify the configuration beyond a set list of general good-practice policies (no arp spoofing, etc).
What do people use in a production environment? Trunk out to an external firewall and do the filtering there? Run iptables or some rules locally in each VM? Or just run pfSense or other firewall software as another VM and manage it there?
And lastly, I'm trying to setup a new interface using the external ovn provider but am having problems.
I can define the external provider network just fine (not connected to physical network), but can't seem to actually use it.
When I create a new VM and assign the new network to an associated interface, the VM fails to start.
The error I get is:
"VM testvm is down with error. Exit message: Cannot get interface MTU on 'br-int': No such device."
Am I missing something obvious here?
I'm running oVirt 4.2.7 with the latest oVirt Node on a few hosts (also 4.2.7).
All my configuration has been via the web interface so far.
Sincerely,
2 years, 8 months
RDP as default console for Windows VM
by Anantha Raghava
Hi,
In the past, we could set RDP as default console for Windows VM. VMs
used to reboot once we set RDP under console options & become default
for all users. In the new versions I am unable to achieve the same result.
Is there a way to set RDP as default Console for Windows VM?
--
Thanks & Regards,
Anantha Raghava
eXzaTech Consulting And Services Pvt. Ltd.
Ph: +91-9538849179, E-mail: raghav(a)exzatechconsulting.com
<mailto:raghav@exzatechconsulting.com>
URL: http://www.exzatechconsulting.com <http://www.exzatechconsulting.com/>
Dell Technology Partner, 3CX - Open Software IP PBX Partner, RedHat
Solutions Partner
Open Source Software Solutions - oVirt, SMARTDesktop, Apache Metron,
OpenVPN, OPNSense......
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2 years, 8 months
Ovirt VDI
by Hari Prasanth Loganathan
Hi Team,
I created a VM which has one disk.
For this VM, I created two Virtual Desktop (VDI_1 and VDI_2) using
open-UDS and it created successfully.
*Consider the following scenario* :
1) I took a console for VDI_1 and created a file in it using the console
2) I took the console for VDI_2 and checked whether the file created in
VDI_1 is available in it but as per the VDI concept it is not available
Could someone clarify the below use case,
Now when I looked at the Disk associated with the VDI, It seems the Disk of
the VM is same for the VDI_1 and VDI_2, so How does the file created in
VDI_1 is not reflecting in VDI_2?
Thanks,
Hari
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2 years, 8 months
[ANN] oVirt 4.2.7 async update is now available
by Sandro Bonazzola
The oVirt Team has just released a new version of the following packages:
- ovirt-engine
- ovirt-hosted-engine-setup
- ovirt-release42
Corresponding oVirt Node is being built and will be released tomorrow.
The async release addresses the following bugs:
- Bug 1647032 - Update gluster volume options set on the volume
- Bug 1645757 - VMs running on the deployed host are removed from the
engine after backup/restore
- Bug 1620314 - SHE disaster recovery is broken in new 4.2 deployments as
hosted_storage is master
- Bug 1568841 - Can't restore hosted-engine backup at deployment
The following enhancements are also included:
- Bug 1469908 - [RFE] Support managed/automated restore
- Bug 1406067 - [RFE] have the option to install hosted engine on specific
datacenter and cluster.
Thanks,
--
SANDRO BONAZZOLA
MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://red.ht/sig>
2 years, 8 months
Manage external KVMs
by markus.schaufler＠digit-all.at
Hi!
Is there a way to manage several external standalone KVM's with oVirt?
So to say - import the KVM Hosts (not the VM's).
regards,
Markus
2 years, 8 months
Ovirt Python - SDK
by Hari Prasanth Loganathan
Hi Team,
I get the following error, How to rectify this issue?
from ovirtsdk.xml import params
ImportError: No module named ovirtsdk.xml
*This is the complete log file, Why I get this error and How to rectify it?*
python manage.py createcachetableTraceback (most recent call last):
File "manage.py", line 9, in <module>
execute_from_command_line(sys.argv)
File "/home/hari/openuds/testuds-master/Python-2.7.14/env/lib/python2.7/site-packages/django/core/management/__init__.py",
line 353, in execute_from_command_line
utility.execute()
File "/home/hari/openuds/testuds-master/Python-2.7.14/env/lib/python2.7/site-packages/django/core/management/__init__.py",
line 327, in execute
django.setup()
File "/home/hari/openuds/testuds-master/Python-2.7.14/env/lib/python2.7/site-packages/django/__init__.py",
line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/hari/openuds/testuds-master/Python-2.7.14/env/lib/python2.7/site-packages/django/apps/registry.py",
line 115, in populate
app_config.ready()
File "/home/hari/openuds/testuds-master/server/src/uds/__init__.py",
line 72, in ready
from . import services # to make sure that the packages are
initialized at this point
File "/home/hari/openuds/testuds-master/server/src/uds/services/__init__.py",
line 73, in <module>
__init__()
File "/home/hari/openuds/testuds-master/server/src/uds/services/__init__.py",
line 63, in __init__
__import__('uds.services.' + name, globals(), locals(), [])
File "/home/hari/openuds/testuds-master/server/src/uds/services/OVirt/__init__.py",
line 31, in <module>
from .OVirtProvider import Provider
File "/home/hari/openuds/testuds-master/server/src/uds/services/OVirt/OVirtProvider.py",
line 44, in <module>
from . import client
File "/home/hari/openuds/testuds-master/server/src/uds/services/OVirt/client/__init__.py",
line 33, in <module>
from . import oVirtClient3;
File "/home/hari/openuds/testuds-master/server/src/uds/services/OVirt/client/oVirtClient3.py",
line 7, in <module>
from ovirtsdk.xml import params
*ImportError: No module named ovirtsdk.xml*
*Thanks,*
*Hari *
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DISCLAIMER - *MSysTechnologies LLC*
This email message, contents and
its attachments may contain confidential, proprietary or legally privileged
information and is intended solely for the use of the individual or entity
to whom it is actually intended. If you have erroneously received this
message, please permanently delete it immediately and notify the sender. If
you are not the intended recipient of the email message,you are notified
strictly not to disseminate,distribute or copy this e-mail.E-mail
transmission cannot be guaranteed to be secure or error-free as Information
could be intercepted, corrupted, lost, destroyed, incomplete or contain
viruses and MSysTechnologies LLC accepts no liability for the contents and
integrity of this mail or for any damage caused by the limitations of the
e-mail transmission.
2 years, 8 months
Memory usage is inaccurate on ovirt web manager.
by patrickstar12358＠hotmail.com
Hi buddy,I encoutered a issue:
Enviroment:ovirt 3.5,node2+node3+engine,node2 and node3 are in the same cluster.
node2:64GB memory
node3:64GB memory
If I try to start 25 VMs on node2,node2's Memory usage is almost up to 80%
But if I start 25 VMs on node3,node3's Memory usage is normal,about 70%
VMs are all the same.
And I checked out "Hosts>General".
on node2:
Physical Memory:64301 MB total, 49512 MB used, 14789 MB free
Swap Size:28567 MB total, -858090 MB used, 886657 MB free
Shared Memory:57%
Max free Memory for scheduling new VMs:24191 MB
Memory Page Sharing:Active
on node3:
Physical Memory:64301 MB total, 37938 MB used, 26363 MB free
Swap Size:28567 MB total, 161 MB used, 28406 MB free
Shared Memory:98%
Max free Memory for scheduling new VMs:24191 MB
Memory Page Sharing:Active
Best regard
2 years, 8 months
Can I Move a Fiber Channel Domain between different environments?
by Jacob Green
We have two Ovirt environments, our existing environment is Ovirt
4.1 And we want to migrate to our 4.2 environment, we chose this path
because upgrading had a lot of issues for us, also we are migrating our
cluster environment to a new IP scheme. So this made the most sense to us.
The question we have now is can we simply move an existing Fiber Channel
domain from our Ovirt 4.1 environment to our 4.2 environment. I see
information here that suggests we can,
https://ovirt.org/documentation/admin-guide/chap-Storage/ however there
is information further down in the document that seems conflicting or I
am confused, I am willing to accept that.
*Near the top of the page I linked it says the following*
"Note:The export storage domain is deprecated. Storage data domains can
be unattached from a data center and imported to another data center in
the same environment, or in a different environment. Virtual machines,
floating virtual disk images, and templates can then be uploaded from
the imported storage domain to the attached data center. SeeImporting
Existing Storage Domains
<https://ovirt.org/documentation/admin-guide/chap-Storage/sect-Importing_E...>for
information on importing storage domains."
**Ok cool so I should be able to import the storage domain into a new
environment? According to that information it would seem so.*
*
*However further down it says the following,*
"Reusing LUNs
LUNs cannot be reused, as is, to create a storage domain or virtual
disk. If you try to reuse the LUNs, the Administration Portal displays
the following error message:"
So I do not want to make a mistake, and remove my storage domain from my
original ovirt environment just to find I cannot re add it to the new
ovirt environment, and if I do that will I be able to import the VMs?
Thank you for any guidance on this topic, It would be much appreciated.
I guess the TLDR would be is the part pasted below of the linked
documentation accurate for fiber channel?
"Data
Importing an existing data storage domain allows you to access all of
the virtual machines and templates that the data storage domain
contains. After you import the storage domain, you must manually import
virtual machines, floating disk images, and templates into the
destination data center. The process for importing the virtual machines
and templates that a data storage domain contains is similar to that for
an export storage domain. However, because data storage domains contain
all the virtual machines and templates in a given data center, importing
data storage domains is recommended for data recovery or large-scale
migration of virtual machines between data centers or environments.
Important: You can import existing data storage domains that were
attached to data centers with a compatibility level of 3.5 or higher."
Please forgive my confusion.
--
Jacob Green
Systems Admin
American Alloy Steel
713-300-5690
2 years, 8 months
