[ovirt-users] Re: Import of VMs failing - 0% progress on qemu-img

[Callum Smith]

Dear Benny and others,

So it seems I wasn’t being patient with GDB and it does show me some output. 
This error of qemu-img convert even is failing and preventing updating 
ovirt-node version from 4.3.2 to 4.3.3.1. I get a feeling this is an unrelated 
error, but I thought I’d be complete:

Excuse any typos, im having to type this manually from a remote session, but 
the error:

[733272.427922] hid-generic 0003:0624:0249.0001: usb_submit_urb(ctrl) failed: 
-19

If this bug is preventing even a local yum updatei can’t see how it’s any issue 
other than somehow involved with the hardware of the hypervisor, our network 
and storage configuration must be irrelevant to this fact at this stage?

Regards,
Callum

--

Callum Smith
Research Computing Core
Wellcome Trust Centre for Human Genetics
University of Oxford
e. cal...@well.ox.ac.uk

On 11 Apr 2019, at 12:00, Callum Smith 
mailto:cal...@well.ox.ac.uk>> wrote:

Without the sudo and running in a  dir where the root has access to, gdb has 
zero output:


Regards,
Callum

--

Callum Smith
Research Computing Core
Wellcome Trust Centre for Human Genetics
University of Oxford
e. cal...@well.ox.ac.uk

On 11 Apr 2019, at 11:54, Callum Smith 
mailto:cal...@well.ox.ac.uk>> wrote:

Some more information:

running qemu-img convert manually having captured the failed attempt from the 
previous:

sudo -u vdsm /usr/bin/qemu-img convert -p -t none -T none -f raw 
/rhev/data-center/mnt/10.141.15.248:_export_instruct_vm__storage/0e01f014-530b-4067-aa1d-4e9378626a9d/images/6597eede-9fa0-4451-84fc-9f9c070cb5f3/765fa48b-2e77-4637-b4ca-e1affcd71e48
 -O raw 
/rhev/data-center/mnt/10.141.15.248:_export_instruct_vm__storage/0e01f014-530b-4067-aa1d-4e9378626a9d/images/9cc99110-70a2-477f-b3ef-1031a912d12b/c2776107-4579-43a6-9d60-93a5ea9c64c5
 -W

Added the -W flag just to see what would happen:

gdb -p 79913 -batch -ex "t a a bt"
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x7f528d7661f0 in __poll_nocancel () from /lib64/libc.so.6

Thread 1 (Thread 0x7f528e6bb840 (LWP 79913)):
#0  0x7f528d7661f0 in __poll_nocancel () from /lib64/libc.so.6
#1  0x7f528dc510fb in sudo_ev_scan_impl () from 
/usr/libexec/sudo/libsudo_util.so.0
#2  0x7f528dc49b44 in sudo_ev_loop_v1 () from 
/usr/libexec/sudo/libsudo_util.so.0
#3  0x55e94aa0e271 in exec_nopty ()
#4  0x55e94aa0afda in sudo_execute ()
#5  0x55e94aa18a12 in run_command ()
#6  0x55e94aa0969e in main ()


And without -W:

gdb -p 85235 -batch -ex "t a a bt"
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x7fc0cc69b1f0 in __poll_nocancel () from /lib64/libc.so.6

Thread 1 (Thread 0x7fc0cd5f0840 (LWP 85235)):
#0  0x7fc0cc69b1f0 in __poll_nocancel () from /lib64/libc.so.6
#1  0x7fc0ccb860fb in sudo_ev_scan_impl () from 
/usr/libexec/sudo/libsudo_util.so.0
#2  0x7fc0ccb7eb44 in sudo_ev_loop_v1 () from 
/usr/libexec/sudo/libsudo_util.so.0
#3  0x5610f4397271 in exec_nopty ()
#4  0x5610f4393fda in sudo_execute ()
#5  0x5610f43a1a12 in run_command ()
#6  0x5610f439269e in main ()

Regards,
Callum

--

Callum Smith
Research Computing Core
Wellcome Trust Centre for Human Genetics
University of Oxford
e. cal...@well.ox.ac.uk

On 11 Apr 2019, at 09:57, Callum Smith 
mailto:cal...@well.ox.ac.uk>> wrote:

Dear Benny,

It would seem that even cloning a VM is failing, creating a VM works on the 
same storage. This is the only error i could find:

ERROR Internal server error
  Traceback (most 
recent call last):
File 
"/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 345, in 
_handle_request
  res = 
method(**params)
File 
"/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 194, in 
_dynamicMethod
  result = 
fn(*methodArgs)
File 
"", line 2, in getAllVmStats
File 
"/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 50, in method
  ret = 
func(*args, **kwargs)
File 
"/usr/lib/python2.7/site-packages/vdsm/API.py", line 1388, in getAllVmStats
  statsList = 
self._cif.getAllVmStats()
File 
"/usr/lib/python2.7/site-packages/vdsm/clientIF.py", line 567, in getAllVmStats
 

[ovirt-users] Replica 3 distribute-replicated - data placement and fault tolerance

[Leo David]

Hello Everyone,
I did some fio performance tests on a particular vm and I have noticed
things that I do not understand regarding how data is placed along the
bricks. I am sure this is a lack of knowledge, but I would really
appreciate any help in understanding this, I did a bit of research on the
internet,  but just could't find something relevant.
I have one replica 3 distributed-replicated arbitrated volume, across 18
bricks ( 9 nodes, 2 jbods per node ).
The volume was created as:
node1 - brick1, node-2, brick1,.node9-brick1, node1 - brick2, node-2,
brick2,.node9-brick2
As far as i've understood,  under the hood there are sets of 3 times
replicated data ( subvolumes ) which are assigned to the first 3 bricks,
next set of replicated data to the next set of 3 bricks,  and so on..
Now, I have this testing vm runign one node one.
When I've started the fio test, i've noticed incresed gluster traffic from
node 1 to node2,4 and 5
So I assumed that the vm disk is data resides on a subvolume allocated to
bricks from these hosts.
Then I have migrated the vm on node 2, and did the same test. Now the
increased treffic is generated from node2 to node1, 4, and 5..
What I do not understand is:
 - why gluster client ( ovirt host ) is sending data to  3 bricks if the
volume is arbitrated - shouldn't it send only to 2 of them ?
- why are there 4 brick implicated in this subvolume
- what would it be the fault tolerance level in this setup ,ie: how many
hosts can I take down and still having the volume serving IO requests; can
they be random ?
I am sorry for my lack of knowledge,  I am just trying to understand what
is happening so I can deploy a decent proper setup of an hci environment.
Thank you,
Leo


-- 
Best regards, Leo David
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[ovirt-users] Re: Ovirt gluster arbiter within hosted VM

[Alex K]

On Fri, Apr 19, 2019 at 1:14 PM Scott Worthington <
scott.c.worthing...@gmail.com> wrote:

> And where, magically, is that node's storage going to live?
>
In the disk of the VM. Let me know if I need to clarify further.

>
> You can't fake a proper setup of gluster.
>
Not trying to fake it. Trying to find a solution with the available
options.

>
> On Fri, Apr 19, 2019, 5:00 AM Alex K  wrote:
>
>> Hi all,
>>
>> I have a two node hyper-converged setup which are causing me split-brains
>> when network issues are encountered. Since I cannot add a third hardware
>> node, I was thinking to add a dedicated guest VM hosted in same
>> hyper-converged cluster which would do the arbiter for the volumes.
>>
>> What do you think about this setup in regards to stability and
>> performance?
>> I am running ovirt 4.2.
>>
>> Thanx,
>> Alex
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>
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[ovirt-users] Ovirt gluster arbiter within hosted VM

[Alex K]

Hi all,

I have a two node hyper-converged setup which are causing me split-brains
when network issues are encountered. Since I cannot add a third hardware
node, I was thinking to add a dedicated guest VM hosted in same
hyper-converged cluster which would do the arbiter for the volumes.

What do you think about this setup in regards to stability and performance?
I am running ovirt 4.2.

Thanx,
Alex
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[ovirt-users] Ovirt-engine self hostd

[Dennis Perfors]

Hi,

We have build Ovirt-engine self hosted. We have created 2 vlans 1 services and 
1 student. This works good.

Services vlan 192.168.60.0/24 gateway ip 192.168.60.1 on this card
Student vlan 192.168.10.0/24 gateway ip 192.168.10.1 on this network card
Everything seems to be oke, but the probem is on the vlan. 

On the node 192.168.60.3, there is no internet connection when we do yum update 
-y 

But there is no internet connection on the host. I cant do yum update -y or do 
anything else.

Here more information: 

^Chttp://mirror.cj2.nl/centos/7.6.1810/extras/x86_64/repodata/repomd.xml: 
[Errno 14] curl#56 - "Callback aborted"
Trying other mirror.
^Chttp://mirror.sitbv.nl/centos/7.6.1810/extras/x86_64/repodata/repomd.xml: 
[Errno 14] curl#56 - "Callback aborted"
Trying other mirror.
http://mirror.serverius.net/centos/7.6.1810/extras/x86_64/repodata/repomd.xml: 
[Errno 14] curl#7 - "Failed to connect to 2a03:3f40:1::15: Network is 
unreachable"


[root@bastion ~]# ping nu.nl
PING nu.nl (52.85.140.48) 56(84) bytes of data.
64 bytes from server-52-85-140-48.man50.r.cloudfront.net (52.85.140.48): 
icmp_seq=1 ttl=241 time=12.8 ms
^C

[root@bastion ~]# ping alibabia.com
PING alibabia.com (137.175.26.243) 56(84) bytes of data.
64 bytes from 137.175.26.243 (137.175.26.243): icmp_seq=1 ttl=115 time=144 ms
64 bytes from 137.175.26.243 (137.175.26.243): icmp_seq=2 ttl=115 time=144 ms
^C

ipv4.method:manual
ipv4.dns:   1.1.1.1
ipv4.dns-search:--
ipv4.dns-options:   ""
ipv4.dns-priority:  0
ipv4.addresses: 192.168.60.3/24
ipv4.gateway:   192.168.60.1
ipv4.routes:--
ipv4.route-metric:  -1
ipv4.route-table:   0 (unspec)
ipv4.ignore-auto-routes:no
ipv4.ignore-auto-dns:   no


public (active)
  target: default
  icmp-block-inversion: no
  interfaces: ovirtmgmt
  sources: 
  services: ssh dhcpv6-client ovirt-postgres ovirt-https 
ovn-central-firewall-service ovirt-fence-kdump-listener ovirt-imageio-proxy 
ovirt-websocket-proxy ovirt-http ovirt-vmconsole-proxy ovirt-provider-ovn https 
http cockpit libvirt-tls snmp vdsm ovirt-imageio ovirt-vmconsole
  ports: 9986/tcp 22/tcp 6081/udp 6100/tcp
  protocols: 
  masquerade: yes
  forward-ports: port=1337:proto=tcp:toport=22:toaddr=192.168.60.3
port=80:proto=tcp:toport=80:toaddr=192.168.60.5
  source-ports: 
  icmp-blocks: 
  rich rules: 
rule family="ipv4" source address="0.0.0.0/24" accept
[root@athena ~]# 


Portfowarding also works to the host 192.168.60.3. so that is no poiint. But 
only traffic from the insidehost to outside is not working.

Thanks
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[ovirt-users] Re: Undeploy oVirt Metrics Store

[toslavik]

Thanks Shirly.
This is a playbook for stopping the fluentd and collectd services on nodes. But 
if you add new nodes to the cluster, the services fluentd and collectd will be 
deployed and will try to connect to elasticsearch.
Is there a playbook to completely remove?
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[ovirt-users] Re: Any plans for oVirt and SBD fencing (a.k.a. poison pill)

[gardenheartzt]

Better workaround is to download newer python-apt from here [1] and install it 
manually with dpkg. The guest agent seems to work OK with it. 
https://run3az.com online There's much less chance of breaking something else, 
also newer python-apt will be picked-up automatically on upgrades. 
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[ovirt-users] Can't create pool after update to 4.3.3

[kiv]

Hi all.

After update my oVirt to 4.3.3 i can't create new pool.
I make new template and trying to create new  pool - but can't select any 
template, selection field is empty.

I have this error:

Uncaught exception occurred. Please try reloading the page. Details: Exception 
caught: undefined
Please have your administrator check the UI logs
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[ovirt-users] Re: Rebrandind Problems

[Simone Tiraboschi]

On Thu, Apr 18, 2019 at 7:31 PM  wrote:

> hello I made a rebranding of my ovirt 4.3.2, but something went wrong and
> I saved it from the original incorrectly without realizing it. Please I
> need the original "ovirt.brand" and "ovirt" directories when ovirt 4.3.2 is
> installed. Where can I get them to be able to restore them?
>

You can check what you need with something like:
rpm -qf /usr/share/ovirt-engine/brands/ovirt.brand


>
> Greetings
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