migrating a vm from a down node
by Bill James
I am doing some fault tolerance type testing with ovirt before we put it
in production.
One thing I noticed is if I unplug the power from a hardware node,
including iLo (fence),
that the VMs that were on that host go to unknown state.
I have found no way in the GUI to migrate the hosts, even they they are
marked HA.
The only way I've found so far is to modify the database directly.
Is that the only recovery from a host failure of this type?
engine=> update vm_dynamic set status = 0 where vm_guid =(select
engine(> vm_guid from vm_static where vm_name = 'myvm');
ovirt-engine-3.6.4.1-1.el7.centos.noarch
centos 7.2
Also is 3.6.4 a OK version to use or should I upgrade first?
(looks like 3.6.6.2-1.el7.centos is current latest)
7 years, 10 months
Accessing VM over WAN
by RK RK
Hi,
I am planning to deploy oVirt 4.0.0 in a production environment where
initially it will host 150 VDIs and will expand by 20 to 25 in subsequent
years with Windows 7, 8.1 and 10.
Users will be accessing these VDIs from their android tab or any tiny thin
client devices which will have only very small footprint OS with HTML5
supported browser.
I wish to give users to access the VDIs over WAN(from their home or on
travel). Is it possible to access the VDIs via spice-html5 over the WAN.
Any special configurations to be made to enable it? How should I make
spice-html5 as the default protocol to access the VDIs?
--
With Regards,
RK,
+91 9840483044
7 years, 10 months
VMs halt on Storage Error
by David Gerner
Hi,
I'm running into a strange issue that I've been trying to solve
unsuccessfully for a few days now, and I was hoping someone could offer
some insight.
A few days ago I needed to reboot the the server that hosts the management
engine and is also a node in the system. Following proper procedure I
selected a new host to be the SPM, migrated VMs off the Host, and put it
into maintenance mode. After the host came back up (and the management
engine was back online) I noticed that one of my VMs had halted on a
storage error, to rule out the SPM being the issue I asked oVirt to select
a new SPM and it was stuck in a contending loop where each host tries to
contend for SPM status but ultimately fails (every other VM also halted by
this point). The error was "BlockSD master file system FSCK error", after
researching the error I found a post on this list that was the same error
and the author said that a simple FSCK on the offending file system fixed
his issue. I had to force shutdown every VM from the halted state and put
all but one host into maintenance mode. On that host I ran a FSCK on the
offending volume which found a lot of short read errors which it fixed and
afterwards the contending loop was broke and hosts could now successfully
be an SPM.
Now every VM halts on start or resume, even ones that were offline at the
time of the earlier incident, with a Storage Error "abnormal vm stop device
virtio-disk0 error eio". I can't even create new disks because it fails
with an error. I've attached what I think is the relevant VDSM log portion
of a VM trying to resume, if more is needed please just let me know.
I'm worried FSCK and I mangled the file system, and have no idea how to
repair it.
Any insight is greatly appreciated.
Thank you,
Dave
oVirt Engine Version: 3.6.2.6-1.el7.centos
Storage Tech: iSCSI
4 Servers each with:
OS: RHEL - 7 - 2.1511.el7.centos.2.10
Kernel: 3.10.0 - 327.4.5.el7.x86_64
KVM Version: 2.3.0 - 31.el7_2.7.1
libVirt Version: libvirt-1.2.17-13.el7_2.5
VDSM Version: vdsm-4.17.28-0.el7.centos
7 years, 10 months
direct mounting of vm disks?
by Robert Story
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Hello,
I'm using oVirt 3.5.x w/nfs for vm file storage. I'm trying to restore a vm
from backup, which entails:
- scp backup.tar to vm
- untar backup on vm
this means all the data makes 3 trips over the network, each of which
causes a load spike on my nfs server. That nfs load, of course, affects all
other vms.
what I'd like to be able to do is
- scp backup.tar to nfs server
- stop vm
- mount vm disks on nfs server
- untar backup on nfs server (using ionice to minimze load impact)
- unmount vm disks
- start vm
I remember that I used to use kpartx to mount regular KVM disks, so I'm
hoping that it can also be done here. Anyone else tried to make this work?
Robert
--=20
Senior Software Engineer @ Parsons
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7 years, 10 months
Unofficial projects
by James Michels
Greetings,
Is there some official oVirt section where you list unofficial
oVirt-related projects? If so, what is the process for a new unofficial
project to get listed there?
If not, I think it might be a good idea to provide a minimal support by
listing them.
Thank you.
James
7 years, 10 months
no katello 3.0 errata available anymore into ovirt
by Nathanaël Blanchet
Hi,
I upgraded to the latest katello 3.0, and errata are not available
anymore for hosts or vms. There is no error, it always displays 0 errata.
The name of the host/vm is the same as into foreman.
Though, list of provisionned hosts is still available, so I suppose the
issue comes from katello API and not foreman API.
Thank you.
--
Nathanaël Blanchet
Supervision réseau
Pôle Infrastrutures Informatiques
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14
blanchet(a)abes.fr
7 years, 10 months
Migrations Guide in order to migrate to Enterprise Linux 7
by Ricky Schneberger
This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--lqvbPKPnHTdwtMCUjfMuxijuAKhJRnANe
Content-Type: multipart/mixed; boundary="mVCwoxH39T20LMeN7dVTaPAj3lpWdCIge"
From: Ricky Schneberger <ricky(a)schneberger.se>
Reply-To: ricky(a)schneberger.se
To: users <users(a)ovirt.org>
Message-ID: <57711C2E.5020500(a)schneberger.se>
Subject: Migrations Guide in order to migrate to Enterprise Linux 7
--mVCwoxH39T20LMeN7dVTaPAj3lpWdCIge
Content-Type: multipart/alternative;
boundary="------------030708040908010902070501"
This is a multi-part message in MIME format.
--------------030708040908010902070501
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Hi,
I found out that an upgrade of oVirt 3.6 to 4.0 is not supported on
Enterprise Linux 6.
The information was that I should follow an Migration Guide -
https://www.ovirt.org/release/4.0.0/documentation/migration-engine-3.6-to-4=
.0.
"Upgrade on Fedora 22 and Enterprise Linux 6 is not supported and you
should follow our Migration Guide
<https://www.ovirt.org/release/4.0.0/documentation/migration-engine-3.6-to-=
4.0/>
in order to migrate to Enterprise Linux 7 or Fedora 23."
The link only gives an 404.
Regards
--=20
Ricky Schneberger
------------------------------------
Use PGP to protect your own privacy!
Key fingerprint =3D 59E1 2B00 C28B 6E0D C8D1 D85B 39AA 7CD5 B88C 0B63
Key-ID: 0xB88C0B63
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<head>
<meta http-equiv=3D"content-type" content=3D"text/html; charset=3Dutf-8=
">
</head>
<body text=3D"#000000" bgcolor=3D"#FFFFFF">
Hi,<br>
I found out that an upgrade of oVirt 3.6 to 4.0 is not supported on
Enterprise Linux 6.<br>
The information was that I should follow an Migration Guide -
<a class=3D"moz-txt-link-freetext" href=3D"https://www.ovirt.org/release/4.=
0.0/documentation/migration-engine-3.6-to-4.0">https://www.ovirt.org/releas=
e/4.0.0/documentation/migration-engine-3.6-to-4.0</a>.<br>
<br>
"Upgrade on Fedora 22 and Enterprise Linux 6 is not supported and
you should follow our <a
href=3D"https://www.ovirt.org/release/4.0.0/documentation/migration-engine-=
3.6-to-4.0/">Migration
Guide</a> in order to migrate to Enterprise Linux 7 or Fedora 23."<br>
<br>
The link only gives an 404.<br>
<br>
Regards<br>
<pre class=3D"moz-signature" cols=3D"72">--=20
Ricky Schneberger
------------------------------------
Use PGP to protect your own privacy!
Key fingerprint =3D 59E1 2B00 C28B 6E0D C8D1 D85B 39AA 7CD5 B88C 0B63
Key-ID: 0xB88C0B63
</pre>
</body>
</html>
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--
IMPORTANT!
This message has been scanned for viruses and phishing links.
However, it is your responsibility to evaluate the links and attachments you choose to click.
If you are uncertain, we always try to help.
Greetings helpdesk(a)actnet.se
7 years, 10 months
Network redundancy with Manual balancing per VLAN
by Fernando Frediani
Hello,
In VMware it is possible to bond two network interfaces and for each
Portgroup (equivalent to a VLAN) is possible to tell which of the
physical interfaces underneath it you wish the traffic to flow primarily
and which stays as secondary(bond mode=1 equivalent). So for certain
VLANs (Management, Live Migration, etc) is possible to force traffic
flow via one physical NIC of the bond and for other VLANs (Virtual
Machine's traffic) outs via the other NIC with failover to each other
should a cable or switch fails.
This is specially good for better utilize the fewer NICs available and
still have redundancy.
In oVirt it is also possible to have bonds, but would it still be
possible to do that same and favor the traffic per VLAN basis ? I guess
it is something related to Linux Bond module but perhaps someone has
done this already.
Thanks
Fernando
7 years, 10 months
oVirt and Ceph
by Charles Gomes
--_000_307E608C4BFFA145A1496A5FD1ACC3BC1D7FDD46exchange2010dim_
Content-Type: text/plain; charset="us-ascii"
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Hello
I've been reading lots of material about implementing oVirt with Ceph, howe=
ver all talk about using Cinder.
Is there a way to get oVirt with Ceph without having to implement entire Op=
enstack ?
I'm already currently using Foreman to deploy Ceph and KVM nodes, trying to=
minimize the amount of moving parts. I heard something about oVirt providi=
ng a managed Cinder appliance, have any seen this ?
--_000_307E608C4BFFA145A1496A5FD1ACC3BC1D7FDD46exchange2010dim_
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<p class=3D"MsoNormal">Hello<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">I’ve been reading lots of material about imple=
menting oVirt with Ceph, however all talk about using Cinder.
<o:p></o:p></p>
<p class=3D"MsoNormal">Is there a way to get oVirt with Ceph without having=
to implement entire Openstack ?
<o:p></o:p></p>
<p class=3D"MsoNormal">I’m already currently using Foreman to deploy =
Ceph and KVM nodes, trying to minimize the amount of moving parts. I heard =
something about oVirt providing a managed Cinder appliance, have any seen t=
his ?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>
--_000_307E608C4BFFA145A1496A5FD1ACC3BC1D7FDD46exchange2010dim_--
7 years, 10 months
latest CentOS libvirt updates safe?
by Robert Story
--Sig_/2+FpI4Cvur605E8SRHVCwXB
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I have oVirt 3.5.x on CentOS 7 hosts. These hosts have updates which
include livbirt:
libvirt-client x86_64 1.2.17-13.el7_2.5 updates 4=
.3 M
libvirt-daemon x86_64 1.2.17-13.el7_2.5 updates 5=
85 k
libvirt-daemon-config-nwfilter x86_64 1.2.17-13.el7_2.5 updates 1=
22 k
libvirt-daemon-driver-interface x86_64 1.2.17-13.el7_2.5 updates 1=
62 k
libvirt-daemon-driver-network x86_64 1.2.17-13.el7_2.5 updates 3=
02 k
libvirt-daemon-driver-nodedev x86_64 1.2.17-13.el7_2.5 updates 1=
61 k
libvirt-daemon-driver-nwfilter x86_64 1.2.17-13.el7_2.5 updates 1=
85 k
libvirt-daemon-driver-qemu x86_64 1.2.17-13.el7_2.5 updates 5=
71 k
libvirt-daemon-driver-secret x86_64 1.2.17-13.el7_2.5 updates 1=
55 k
libvirt-daemon-driver-storage x86_64 1.2.17-13.el7_2.5 updates 3=
28 k
libvirt-daemon-kvm x86_64 1.2.17-13.el7_2.5 updates 1=
18 k
libvirt-lock-sanlock
Is it safe to let yum update these packages while the host has running VMs?
in maintenance mode? or not at all?
Robert
--=20
Senior Software Engineer @ Parsons
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7 years, 10 months
