Chinese oVirt community
by Yedidyah Bar David
Hi all,
Recently, more and more questions are posted to users(a)ovirt.org in
what seems like a result of a google translation of Chinese to
English. These are usually hard to understand, and I expect the
replies are also hard to understand. A recent example is [1].
Two years ago there was a discussion [2] about this on
users(a)ovirt.org. Now, when searching, I find:
1. There seems to have been a domain ovirt-china.org , but it's dead
now (no info about it in dns or whois). The only version of it I can
find on archive.org is [3].
2. There is a github org [4].
3. There is a google group [5] , but it requires registration to view
(and I didn't try to register).
If there is an active Chinese community of oVirt users, perhaps we
should give it more publicity, to make it easier to find. Otherwise,
perhaps we can help by creating a list on lists.ovirt.org , or
something like that.
Best regards,
[1] http://lists.ovirt.org/pipermail/users/2016-October/043732.html
[2]
http://lists.ovirt.org/pipermail/users/2014-May/024585.html
http://lists.ovirt.org/pipermail/users/2014-May/024862.html
http://lists.ovirt.org/pipermail/users/2014-May/024668.html
[3] http://web.archive.org/web/20141203033820/http://www.ovirt-china.org/
[4] https://github.com/ovirt-china
[5] https://groups.google.com/forum/#!forum/ovirt-china
--
Didi
7 years, 5 months
ovirt homeserver
by david caughey
Hi,
I'm building a homeserver to run ovirt and wanted to get opinions on the
best approach.
The server will be used as a test/studybed for
ovirt/kvm/vcloud/openstack/ceph.
The server will be based around a Xeon E5 10 core with 128GB ram.
Option 1:
Build server with CentOS 7.2 and deploy ovirt directly on top.
Option 2:
Build server with CentOS 7.2 and deploy multiple ovirt instances on top of
KVM.
Which will be the most stable versatile method?
If a GPU is used as a passthrough device can it be used on several vm's or
is it restricted to 1 vm?
If 2 GPU's are used can 1 be used as a dedicated passthrough to 1 vm and
the other shared between the remaining vm's?
Is CentOS/RH the best platform for ovirt?
Is it okay/advisable to load the latest kernel, (4.8 ish), on to CentOS
before installing ovirt?
Any and all comments/advice welcome,
David
7 years, 5 months
100% disk utilization on Hosted Engine
by Anantha Raghava
This is a multi-part message in MIME format.
--------------10436485D205AA7FD0A15C25
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Hi,
I have hit a unique problem. Using oVirt 4.0.2.7-1.el7.centos since last
one month and I have hit a unique problem. The Engine is reporting that
Disk space allocated to Hosted engine is full and is not allowing to
login to engine's console to clear some files as well. When I try to add
additional storage to Hosted engine, engine admin portal reports that as
Engine VM is not managed by oVirt Engine, it cannot extend the storage.
Now the questions are:
1. Is it that enabling advanced DWH on the engine host is the root cause
for 100GB of disk getting filled in about 1 month?
2. How do we clear the disk of some unwanted files and extend the space?
3. How do we reset the DWH database to basic?
Note: CentOS 7.2 is not even allowing us to login to console to do any
action. Booting the Hosted Engine VM with Live CD etc., looks like is
ruled out in this case.
--
Thanks & Regards,
Anantha Raghava
eXza Technology Consulting & Services
Do not print this e-mail unless required. Save Paper & trees.
--------------10436485D205AA7FD0A15C25
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p><font face="Liberation Serif">Hi,</font></p>
<p><font face="Liberation Serif">I have hit a unique problem. Using
oVirt 4.0.2.7-1.el7.centos since last one month and I have hit a
unique problem. The Engine is reporting that Disk space
allocated to Hosted engine is full and is not allowing to login
to engine's console to clear some files as well. When I try to
add additional storage to Hosted engine, engine admin portal
reports that as Engine VM is not managed by oVirt Engine, it
cannot extend the storage.<br>
</font></p>
<p><font face="Liberation Serif">Now the questions are:</font></p>
<p><font face="Liberation Serif">1. Is it that enabling advanced DWH
on the engine host is the root cause for 100GB of disk getting
filled in about 1 month?</font></p>
<p><font face="Liberation Serif">2. How do we clear the disk of some
unwanted files and extend the space?</font></p>
<p><font face="Liberation Serif">3. How do we reset the DWH database
to basic?</font><br>
</p>
<br>
<div class="moz-signature">Note: CentOS 7.2 is not even allowing us
to login to console to do any action. Booting the Hosted Engine VM
with Live CD etc., looks like is ruled out in this case.<br>
--
<p style="margin-bottom: 0cm; line-height: 100%"><font face="Times
New Roman, serif">Thanks
& Regards,</font></p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<address style="line-height: 100%"><font face="Times New Roman,
serif">Anantha
Raghava</font></address>
<address style="line-height: 100%"><font face="Times New Roman,
serif">eXza
Technology Consulting & Services</font></address>
<br>
<p style="margin-bottom: 0cm; line-height: 100%"><font
color="#66cc00"><font face="Times New Roman, serif">Do
not print this e-mail unless required. Save Paper &
trees.</font></font></p>
</div>
</body>
</html>
--------------10436485D205AA7FD0A15C25--
7 years, 5 months
when engine broken
by 张 余歌
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7 years, 5 months
Fwd: Re: Local and Shared storage in same datacenter
by Mike
Hi Barak,
Op 30-10-2016 om 11:19 schreef Barak Korren:
>> While I understand that this makes having local storage impossible, I
>> believe there is a use case to have local storage in a shared storage
>> datacenter.
>> Consider the following:
>> I have a few applications that require 1 milli second latency and at most 2
>> milli second.
>> That is not consistenly achievable with shared storage, to that end I added
>> flash storage to a few hypervisors.
>> About 5% of my servers require this and are not that resource hungry to
>> require a dedicated physical server.
>> That same 5% also has no requirement to be migrated if a host fails.
>>
>
> I mentioned this in another thread already, please look into the VDSM
> scratchpad hook. It will allow you to attach (files on) the local SSDs
> (as disks) to VMs when those VMs start up. It will perfectly meet your
> use case if you only need to keep the data on the SSD while the VM is
> up.
>
>
The data should not be lost if we power down the VM.
If the data is lost during a host failure we have options to restore the
data, but do not want to do it on a weekly/monthly basis.
The scratchpad is useful for other options we are exploring, thanks!
7 years, 5 months
Persist files node-ng
by Jonas Israelsson
How do I persist files on a ng-node ?
I forgot to add some needed network-configuration during install. While
these manually added config files seem to survive a reboot, updating the
node via the web-ui will wipe them.
TIA
Jonas
7 years, 5 months
gluster setup in ovirt
by Thing
Hi,
I have 3 machines imported into ovirt 4.0.4 just to do storage. I have no
storage setup. I am a bit confused, can I add new storage from scratch via
ovirt? ie picking mount points (I have /gv1 so set on each) or do I create
the gluster replicated setup manually on each of the three nodes first? and
import "ready made"?
7 years, 5 months
messed up gluster attempt
by Thing
Hi,
So was was trying to make a 3 way mirror and it reported failed. Now I get
these messages,
On glusterp1,
=========
[root@glusterp1 ~]# gluster peer status
Number of Peers: 1
Hostname: 192.168.1.32
Uuid: ef780f56-267f-4a6d-8412-4f1bb31fd3ac
State: Peer in Cluster (Connected)
[root@glusterp1 ~]# gluster peer probe glusterp3.graywitch.co.nz
peer probe: failed: glusterp3.graywitch.co.nz is either already part of
another cluster or having volumes configured
[root@glusterp1 ~]# gluster volume info
No volumes present
[root@glusterp1 ~]#
=========
on glusterp2,
=========
[root@glusterp2 ~]# systemctl status glusterd.service
● glusterd.service - GlusterFS, a clustered file-system server
Loaded: loaded (/usr/lib/systemd/system/glusterd.service; disabled;
vendor preset: disabled)
Active: active (running) since Fri 2016-10-28 15:22:34 NZDT; 5min ago
Main PID: 16779 (glusterd)
CGroup: /system.slice/glusterd.service
└─16779 /usr/sbin/glusterd -p /var/run/glusterd.pid --log-level
INFO
Oct 28 15:22:32 glusterp2.graywitch.co.nz systemd[1]: Starting GlusterFS, a
clustered file-system server...
Oct 28 15:22:34 glusterp2.graywitch.co.nz systemd[1]: Started GlusterFS, a
clustered file-system server.
[root@glusterp2 ~]# gluster volume info
No volumes present
[root@glusterp2 ~]# gluster peer status
Number of Peers: 2
Hostname: 192.168.1.33
Uuid: 0fde5a5b-6254-4931-b704-40a88d4e89ce
State: Sent and Received peer request (Connected)
Hostname: 192.168.1.31
Uuid: a29a93ee-e03a-46b0-a168-4d5e224d5f02
State: Peer in Cluster (Connected)
[root@glusterp2 ~]#
==========
on glusterp3,
==========
[root@glusterp3 glusterd]# systemctl status glusterd.service
● glusterd.service - GlusterFS, a clustered file-system server
Loaded: loaded (/usr/lib/systemd/system/glusterd.service; disabled;
vendor preset: disabled)
Active: active (running) since Fri 2016-10-28 15:26:40 NZDT; 1min 16s ago
Main PID: 7033 (glusterd)
CGroup: /system.slice/glusterd.service
└─7033 /usr/sbin/glusterd -p /var/run/glusterd.pid --log-level
INFO
Oct 28 15:26:37 glusterp3.graywitch.co.nz systemd[1]: Starting GlusterFS, a
clustered file-system server...
Oct 28 15:26:40 glusterp3.graywitch.co.nz systemd[1]: Started GlusterFS, a
clustered file-system server.
[root@glusterp3 glusterd]# gluster volume info
No volumes present
[root@glusterp3 glusterd]# gluster peer probe glusterp1.graywitch.co.nz
peer probe: failed: glusterp1.graywitch.co.nz is either already part of
another cluster or having volumes configured
[root@glusterp3 glusterd]# gluster volume info
No volumes present
[root@glusterp3 glusterd]# gluster peer status
Number of Peers: 1
Hostname: glusterp2.graywitch.co.nz
Uuid: ef780f56-267f-4a6d-8412-4f1bb31fd3ac
State: Sent and Received peer request (Connected)
[root@glusterp3 glusterd]#
===========
How do I clean this mess up?
thanks
7 years, 5 months
gluster how to setup a volume across 3 nodes via ovirt
by Thing
Hi,
I have 3 gluster nodes running,
======
[root@glusterp1 ~]# gluster peer status
Number of Peers: 2
Hostname: 192.168.1.33
Uuid: 0fde5a5b-6254-4931-b704-40a88d4e89ce
State: Peer in Cluster (Connected)
Hostname: 192.168.1.32
Uuid: ef780f56-267f-4a6d-8412-4f1bb31fd3ac
State: Peer in Cluster (Connected)
======
I have a 900gb partition on each of the three nodes ready to go, formatted
xfs. However when I go into host---> storage devices it says gv_1-lvgv1
is already in use and "create brick" is greyed out.
So how do I get "create brick" un-greyed?
The partition isnt mounted, just setup and xfs'd ready for use.
Or am I better to set it up via the CLI on glusterp1? I assume I can then
import it into ovirt for use?
7 years, 5 months
