Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-12 09:09, Barak Korren a écrit : 

>> What that procedure describes is backing up an existing engine,
>> installing a new one and then restoring the backed up data into it.
>> This was probably written to describe migration from a stand-alone
>> engine host, not an AllInOne.
>> Theoretically this should work for your setup, but I am not sure if
>> the new hosted engine will be able to properly use the AllInOne node
>> as a hypervisor (it would probably depend on the copied configuration
>> containing enough details to allow the engine to connect to it over
>> the network. you will probably at the very last have to shut down the
>> existing engine before starting up the hosted engine)
>> I would suggest doing as many backups as you can before starting, and
>> performing the H.E. setup on a host that wasn't used by the existing
>> engine, that way if it fails you can just shut it down and bring your
>> old engine back up.

I got a backup running at this moment, scping
/gluster/ovirt/d44ee4b0-8d36-467a-9610-c682a618b698/images/ to a third
device. 

So, once done, i'll give a shot on the node2 which is running only VDSM
as Host agent. 

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Re: [ovirt-users] CEPH rbd support in EL7 libvirt

[Nir Soffer]

On Sun, Oct 11, 2015 at 12:52 PM, Nux!  wrote:
> Hi folks,
>
> I was directed here by Sandro with the question in the $subject.
> As I could not find anything conclusive in either bugzilla or the 7.2 release 
> notes, can someone clarify this for me?
> At this point it's apparently as easy as rebuilding the libvirt src.rpm with 
> "with_storage_rbd 1".[1]
>
> I see users migrating from CentOS to Ubuntu because this is missing, it's not 
> even in technology preview.
> Kind of odd RH undermining their own projects in this way.
>
> [1] - 
> http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-storage-pool-support/

RHEL 7.1 supports rbd out of the box; so should be current CentOS 7.

We do not use libvirt storage pool for ovirt, so I don't think you
need to build anything.

Also, we do not access rbd volumes via libvirt. When we run vms using
rbd: volumes, libvirt
pass the volume url to qemu, and qemu access the volume. So we may not
need any rbd
support in libvirt itself.

Did you try to use ceph with ovirt 3.6 on CentOS?

Nir
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Re: [ovirt-users] oVirt Engine redundant ?

[Barak Korren]

On 12 October 2015 at 09:52, Nico  wrote:
> Le 2015-10-12 05:37, Julian De Marchi a écrit :
>
>
> The oVirt hosted-engine will do what you want. Have a read of the below.
>
> http://www.ovirt.org/Migrate_to_Hosted_Engine
>
> --julian
> ___
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> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
> Thanks for your quick reply.
>
> I m going to follow the step described in this page.
>
> The first action is to run
>
> # hosted-engine --deploy
>
> INFO  ] Stage: Initializing
>
>   Continuing will configure this host for serving as hypervisor and
> create a VM where oVirt Engine will be installed afterwards.
>
>   Are you sure you want to continue? (Yes, No)[Yes]:
>
> In my case; i’ve already an existing install on this node (AllinOne); will
> it be ok ? nothing will be break or overriden ?.
>
>

What that procedure describes is backing up an existing engine,
installing a new one and then restoring the backed up data into it.
This was probably written to describe migration from a stand-alone
engine host, not an AllInOne.
Theoretically this should work for your setup, but I am not sure if
the new hosted engine will be able to properly use the AllInOne node
as a hypervisor (it would probably depend on the copied configuration
containing enough details to allow the engine to connect to it over
the network. you will probably at the very last have to shut down the
existing engine before starting up the hosted engine)
I would suggest doing as many backups as you can before starting, and
performing the H.E. setup on a host that wasn't used by the existing
engine, that way if it fails you can just shut it down and bring your
old engine back up.

>
> Thanks
>
> Regards
>
> Nico
>
>
>
>
>
> ___
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> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>



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Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-12 05:37, Julian De Marchi a écrit : 

> The oVirt hosted-engine will do what you want. Have a read of the below.
> 
> http://www.ovirt.org/Migrate_to_Hosted_Engine [1]
> 
> --julian
> ___
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> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users [2]

Thanks for your quick reply. 

I m going to follow the step described in this page. 

The first action is to run 

# hosted-engine --deploy 

 INFO ] Stage: Initializing 

 Continuing will configure this host for serving as hypervisor and
create a VM where oVirt Engine will be installed afterwards. 

 Are you sure you want to continue? (Yes, No)[Yes]: 

In my case; i've already an existing install on this node (AllinOne);
will it be ok ? nothing will be break or overriden ?. 

Thanks 

Regards 

Nico 

 

Links:
--
[1] http://www.ovirt.org/Migrate_to_Hosted_Engine
[2] http://lists.ovirt.org/mailman/listinfo/users
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Re: [ovirt-users] engine.log is looping with Volume XXX contains a apparently corrupt brick(s).

[Nir Soffer]

On Sun, Oct 11, 2015 at 6:43 PM, Nico  wrote:
> Recently, i built a small oVirt platform with 2 dedicated servers and 
> GlusterFS to synch the VM storage.
> Bricks:
>
> Brick1: ovirt01:/gluster/ovirt
>
> Brick2: ovirt02:/gluster/ovirt

This looks like replica 2 - this is not supported.

You can use either replica 1 (testing) or replica 3 (production).

> But when i check /var/log/ovirt/engine.log on ovirt01, there are error in 
> loop every 2 seconds:
To understand such error we need to see the vdsm log.

Nir
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Re: [ovirt-users] engine.log is looping with Volume XXX contains a apparently corrupt brick(s).

[Nico]

 

Le 2015-10-12 09:59, Nir Soffer a écrit : 

> On Sun, Oct 11, 2015 at 6:43 PM, Nico  wrote: 
> 
>> Recently, i built a small oVirt platform with 2 dedicated servers and 
>> GlusterFS to synch the VM storage.
>> Bricks:
>> 
>> Brick1: ovirt01:/gluster/ovirt
>> 
>> Brick2: ovirt02:/gluster/ovirt
> 
> This looks like replica 2 - this is not supported.
> 
> You can use either replica 1 (testing) or replica 3 (production).
> 
>> But when i check /var/log/ovirt/engine.log on ovirt01, there are error in 
>> loop every 2 seconds:
> To understand such error we need to see the vdsm log.
> 
> Nir

Yeah it is replica 2 as i've only 2 dedicated servers. 

why are you saying it is not supported ? Through oVirt GUI, it is
possible to create a Gluster Volume with 2 bricks in repllcate mode; i
tried it also. 

here the last entries of vdsm.log 

hread-167405::DEBUG::2015-10-12
10:12:20,132::stompReactor::163::yajsonrpc.StompServer::(send) Sending
response
Thread-55245::DEBUG::2015-10-12
10:12:22,529::task::595::Storage.TaskManager.Task::(_updateState)
Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::moving from state init ->
state preparing
Thread-55245::INFO::2015-10-12
10:12:22,530::logUtils::44::dispatcher::(wrapper) Run and protect:
getVolumeSize(sdUUID='d44ee4b0-8d36-467a-9610-c682a618b698',
spUUID='0ae7120a-430d-4534-9a7e-59c53fb2e804',
imgUUID='3454b077-297b-4b89-b8ce-a77f6ec5d22e',
volUUID='933da0b6-6a05-4e64-958a-e1c030cf5ddb', options=None)
Thread-55245::INFO::2015-10-12
10:12:22,535::logUtils::47::dispatcher::(wrapper) Run and protect:
getVolumeSize, Return response: {'truesize': '158983839744',
'apparentsize': '161061273600'}
Thread-55245::DEBUG::2015-10-12
10:12:22,535::task::1191::Storage.TaskManager.Task::(prepare)
Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::finished: {'truesize':
'158983839744', 'apparentsize': '161061273600'}
Thread-55245::DEBUG::2015-10-12
10:12:22,535::task::595::Storage.TaskManager.Task::(_updateState)
Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::moving from state preparing
-> state finished
Thread-55245::DEBUG::2015-10-12
10:12:22,535::resourceManager::940::Storage.ResourceManager.Owner::(releaseAll)
Owner.releaseAll requests {} resources {}
Thread-55245::DEBUG::2015-10-12
10:12:22,536::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
Owner.cancelAll requests {}
Thread-55245::DEBUG::2015-10-12
10:12:22,536::task::993::Storage.TaskManager.Task::(_decref)
Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::ref 0 aborting False
Thread-55245::DEBUG::2015-10-12
10:12:22,545::libvirtconnection::143::root::(wrapper) Unknown
libvirterror: ecode: 80 edom: 20 level: 2 message: metadata not found:
Requested metadata element is not present
JsonRpc (StompReactor)::DEBUG::2015-10-12
10:12:23,138::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message 
JsonRpcServer::DEBUG::2015-10-12
10:12:23,139::__init__::530::jsonrpc.JsonRpcServer::(serve_requests)
Waiting for request
Thread-167406::DEBUG::2015-10-12
10:12:23,142::stompReactor::163::yajsonrpc.StompServer::(send) Sending
response
Thread-37810::DEBUG::2015-10-12
10:12:24,194::fileSD::262::Storage.Misc.excCmd::(getReadDelay)
/usr/bin/dd
if=/rhev/data-center/mnt/ovirt01:_data_iso/5aec30fa-be8b-4f4e-832e-eafb6fa4a8e0/dom_md/metadata
iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
Thread-37810::DEBUG::2015-10-12
10:12:24,201::fileSD::262::Storage.Misc.excCmd::(getReadDelay) SUCCESS:
 = '0+1 records in\n0+1 records out\n317 bytes (317 B) copied,
0.000131729 s, 2.4 MB/s\n';  = 0
JsonRpc (StompReactor)::DEBUG::2015-10-12
10:12:26,148::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message 
JsonRpcServer::DEBUG::2015-10-12
10:12:26,149::__init__::530::jsonrpc.JsonRpcServer::(serve_requests)
Waiting for request
Thread-167407::DEBUG::2015-10-12
10:12:26,151::stompReactor::163::yajsonrpc.StompServer::(send) Sending
response
VM Channels Listener::DEBUG::2015-10-12
10:12:26,972::vmchannels::96::vds::(_handle_timeouts) Timeout on fileno
35.
Thread-30::DEBUG::2015-10-12
10:12:28,358::fileSD::262::Storage.Misc.excCmd::(getReadDelay)
/usr/bin/dd
if=/rhev/data-center/mnt/glusterSD/localhost:_ovirt/d44ee4b0-8d36-467a-9610-c682a618b698/dom_md/metadata
iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
Thread-30::DEBUG::2015-10-12
10:12:28,451::fileSD::262::Storage.Misc.excCmd::(getReadDelay) SUCCESS:
 = '0+1 records in\n0+1 records out\n470 bytes (470 B) copied,
0.000152738 s, 3.1 MB/s\n';  = 0
JsonRpc (StompReactor)::DEBUG::2015-10-12
10:12:29,157::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message 
JsonRpcServer::DEBUG::2015-10-12
10:12:29,252::__init__::530::jsonrpc.JsonRpcServer::(serve_requests)
Waiting for request
Thread-167408::DEBUG::2015-10-12
10:12:29,254::stompReactor::163::yajsonrpc.StompServer::(send) Sending
response
JsonRpc (StompReactor)::DEBUG::2015-10-12
10:12:32,260::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message 

Re: [ovirt-users] CEPH rbd support in EL7 libvirt

[Nux!]

Hi Nir,

I have not tried to use Ovirt with Ceph, my question was about libvirt and was 
directed to ask the question here, sorry for the noise; I understand libvirt is 
not really ovirt's people concern.

The thing is qemu can do ceph rbd in EL7, libvirt does not, although support 
seems to be there and a simple rebuild enables it.
Was hoping you guys know more.

Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -
> From: "Nir Soffer" 
> To: "Nux!" 
> Cc: "users" 
> Sent: Monday, 12 October, 2015 09:05:00
> Subject: Re: [ovirt-users] CEPH rbd support in EL7 libvirt

> On Sun, Oct 11, 2015 at 12:52 PM, Nux!  wrote:
>> Hi folks,
>>
>> I was directed here by Sandro with the question in the $subject.
>> As I could not find anything conclusive in either bugzilla or the 7.2 release
>> notes, can someone clarify this for me?
>> At this point it's apparently as easy as rebuilding the libvirt src.rpm with
>> "with_storage_rbd 1".[1]
>>
>> I see users migrating from CentOS to Ubuntu because this is missing, it's not
>> even in technology preview.
>> Kind of odd RH undermining their own projects in this way.
>>
>> [1] -
>> http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-storage-pool-support/
> 
> RHEL 7.1 supports rbd out of the box; so should be current CentOS 7.
> 
> We do not use libvirt storage pool for ovirt, so I don't think you
> need to build anything.
> 
> Also, we do not access rbd volumes via libvirt. When we run vms using
> rbd: volumes, libvirt
> pass the volume url to qemu, and qemu access the volume. So we may not
> need any rbd
> support in libvirt itself.
> 
> Did you try to use ceph with ovirt 3.6 on CentOS?
> 
> Nir
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Re: [ovirt-users] how to remove orphaned image

[Elad Ben Aharon]

Hi Jiri,

Is the image located under the same storage pool the host is currently
connected to?
You can check the current connected storage pool by the following:
# vdsClient -s 0 getConnectedStoragePoolsList

On Fri, Oct 9, 2015 at 12:45 PM, Jiří Sléžka  wrote:

> Hello,
>
> I have some orphaned images on a storage domain which are not visible from
> manager and I would like to remove them.
>
> I found one proposed feature which would be useful but seems not exists
> yet - http://www.ovirt.org/Features/Orphaned_Images
>
> Also I found this feature http://www.ovirt.org/Features/Domain_Scan but
> there is no documentation how to use it.
>
> Could you suggest me safe manual steps to remove an orphaned image?
>
> btw. I know all info about this image - sdUUID, spUUID, imgUUID, volUUID,
> volume path, logical volume on which is stored,... I am using oVirt3.5.4
>
> Thanks in advance,
>
> Jiri Slezka
>
>
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Re: [ovirt-users] Migrate VM to new cluster

[Nathanaël Blanchet]

I've recently done the same thing, two ways are possible:

 * offline (safer) : edit the parameters of your vms and change to the
   desired cluster. If you do the same with the online vm, engine will
   tell you it will be effective at the next reboot.
 * online : you can force a live migration from a cluster to an other
   one choosing the advanced parameter tab, but your target cluster
   must support at least a smaller CPU family than the source one,
   because of the qemu capabilities.


Le 12/10/2015 17:24, Kevin COUSIN a écrit :

Hi list,

Hi upgrade my nodes from CentOS 6 to CentOS 7. I create a new cluster, but how 
can I migrate all my VM to the new cluster ?

Thanks a lot



   Kevin
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[ovirt-users] Migrate VM to new cluster

[Kevin COUSIN]

Hi list,

Hi upgrade my nodes from CentOS 6 to CentOS 7. I create a new cluster, but how 
can I migrate all my VM to the new cluster ?

Thanks a lot



  Kevin
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[ovirt-users] Best practice

[Fernando Fuentes]

Is there a best practice when upgrading from ovirt 3.4 to 3.5?
I upgraded my development server which is a self hosted server and I 
just did a regular update without putting anything under maintenance... 
Though my vm's where turned off. The migration from krb/ldap to AAA went 
smoothly and so far is running like a champ.


I am about to do the same to our production cluster and was wondering if 
I must put all Hosts under maintenance before I do the upgrade?


Thanks in advance for all/any tips from the mailing list!

Regards,

--

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Supervisor & Senior Systems Administrator
Email: ffuen...@aasteel.com
 
American Alloy Steel, Inc.

Houston, Texas
Website: http://www.aasteel.com
 
Phone: 713-744-4222

Fax:   713-300-5688

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Re: [ovirt-users] Migrate VM to new cluster

[Kevin COUSIN]

> Hi list,
> 
> Hi upgrade my nodes from CentOS 6 to CentOS 7. I create a new cluster, but how
> can I migrate all my VM to the new cluster ?

Sorry for the mistake, 

I upgrade my nodes from CentOS 6 to CentOS 7. I create a new cluster, but how
can I migrate all my VM to the new cluster ?

> 
> Thanks a lot
> 
> 
> 
>   Kevin
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Re: [ovirt-users] engine.log is looping with Volume XXX contains a apparently corrupt brick(s).

[Nir Soffer]

On Mon, Oct 12, 2015 at 11:14 AM, Nico  wrote:
>
>
> Le 2015-10-12 09:59, Nir Soffer a écrit :
>
> On Sun, Oct 11, 2015 at 6:43 PM, Nico  wrote:
>
> Recently, i built a small oVirt platform with 2 dedicated servers and
> GlusterFS to synch the VM storage.
> Bricks:
>
> Brick1: ovirt01:/gluster/ovirt
>
> Brick2: ovirt02:/gluster/ovirt
>
>
> This looks like replica 2 - this is not supported.
>
> You can use either replica 1 (testing) or replica 3 (production).
>
> But when i check /var/log/ovirt/engine.log on ovirt01, there are error in
> loop every 2 seconds:
>
> To understand such error we need to see the vdsm log.
>
> Nir
>
> Yeah it is replica 2 as i've only 2 dedicated servers.
>
> why are you saying it is not supported ? Through oVirt GUI, it is possible
> to create a Gluster Volume with 2 bricks in repllcate mode; i tried it also.

Yes, engine will let you use such volume in 3.5 - this is a bug. In 3.6 you will
not be able to use such setup.

replica 2 fails in a very bad way when one brick is down; the
application may get
stale data, and this breaks sanlock. You will be get stuck with spm
that cannot be
stopped and other fun stuff.

You don't want to go in this direction, and we will not be able to support that.

> here the last entries of vdsm.log

We need the whole file.

I suggest you file an ovirt bug and attach the full vdsm log file
showing the timeframe of
the error. Probably from the time you created the glusterfs domain.

Nir

>
>
>
> hread-167405::DEBUG::2015-10-12
> 10:12:20,132::stompReactor::163::yajsonrpc.StompServer::(send) Sending
> response
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,529::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::moving from state init -> state
> preparing
> Thread-55245::INFO::2015-10-12
> 10:12:22,530::logUtils::44::dispatcher::(wrapper) Run and protect:
> getVolumeSize(sdUUID='d44ee4b0-8d36-467a-9610-c682a618b698',
> spUUID='0ae7120a-430d-4534-9a7e-59c53fb2e804',
> imgUUID='3454b077-297b-4b89-b8ce-a77f6ec5d22e',
> volUUID='933da0b6-6a05-4e64-958a-e1c030cf5ddb', options=None)
> Thread-55245::INFO::2015-10-12
> 10:12:22,535::logUtils::47::dispatcher::(wrapper) Run and protect:
> getVolumeSize, Return response: {'truesize': '158983839744', 'apparentsize':
> '161061273600'}
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,535::task::1191::Storage.TaskManager.Task::(prepare)
> Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::finished: {'truesize':
> '158983839744', 'apparentsize': '161061273600'}
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,535::task::595::Storage.TaskManager.Task::(_updateState)
> Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::moving from state preparing ->
> state finished
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,535::resourceManager::940::Storage.ResourceManager.Owner::(releaseAll)
> Owner.releaseAll requests {} resources {}
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,536::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
> Owner.cancelAll requests {}
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,536::task::993::Storage.TaskManager.Task::(_decref)
> Task=`c887acfa-bd10-4dfb-9374-da607c133e68`::ref 0 aborting False
> Thread-55245::DEBUG::2015-10-12
> 10:12:22,545::libvirtconnection::143::root::(wrapper) Unknown libvirterror:
> ecode: 80 edom: 20 level: 2 message: metadata not found: Requested metadata
> element is not present
> JsonRpc (StompReactor)::DEBUG::2015-10-12
> 10:12:23,138::stompReactor::98::Broker.StompAdapter::(handle_frame) Handling
> message 
> JsonRpcServer::DEBUG::2015-10-12
> 10:12:23,139::__init__::530::jsonrpc.JsonRpcServer::(serve_requests) Waiting
> for request
> Thread-167406::DEBUG::2015-10-12
> 10:12:23,142::stompReactor::163::yajsonrpc.StompServer::(send) Sending
> response
> Thread-37810::DEBUG::2015-10-12
> 10:12:24,194::fileSD::262::Storage.Misc.excCmd::(getReadDelay) /usr/bin/dd
> if=/rhev/data-center/mnt/ovirt01:_data_iso/5aec30fa-be8b-4f4e-832e-eafb6fa4a8e0/dom_md/metadata
> iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
> Thread-37810::DEBUG::2015-10-12
> 10:12:24,201::fileSD::262::Storage.Misc.excCmd::(getReadDelay) SUCCESS:
>  = '0+1 records in\n0+1 records out\n317 bytes (317 B) copied,
> 0.000131729 s, 2.4 MB/s\n';  = 0
> JsonRpc (StompReactor)::DEBUG::2015-10-12
> 10:12:26,148::stompReactor::98::Broker.StompAdapter::(handle_frame) Handling
> message 
> JsonRpcServer::DEBUG::2015-10-12
> 10:12:26,149::__init__::530::jsonrpc.JsonRpcServer::(serve_requests) Waiting
> for request
> Thread-167407::DEBUG::2015-10-12
> 10:12:26,151::stompReactor::163::yajsonrpc.StompServer::(send) Sending
> response
> VM Channels Listener::DEBUG::2015-10-12
> 10:12:26,972::vmchannels::96::vds::(_handle_timeouts) Timeout on fileno 35.
> Thread-30::DEBUG::2015-10-12
> 10:12:28,358::fileSD::262::Storage.Misc.excCmd::(getReadDelay) /usr/bin/dd
> 

Re: [ovirt-users] Collectd with Ovirt

[Yaniv Dary]

Do you see it in the REST API?
Do you see it in the DWH database?
Is the issue only in the reports?

Yaniv Dary
Technical Product Manager
Red Hat Israel Ltd.
34 Jerusalem Road
Building A, 4th floor
Ra'anana, Israel 4350109

Tel : +972 (9) 7692306
8272306
Email: yd...@redhat.com
IRC : ydary


On Mon, Oct 12, 2015 at 4:56 AM, Punit Dambiwal  wrote:

> Hi,
>
> The guest agent installed on the guest VM but still can not get the
> network usages..
>
> On Sun, Oct 11, 2015 at 10:28 PM, Yaniv Dary  wrote:
>
>>
>>
>> Yaniv Dary
>> Technical Product Manager
>> Red Hat Israel Ltd.
>> 34 Jerusalem Road
>> Building A, 4th floor
>> Ra'anana, Israel 4350109
>>
>> Tel : +972 (9) 7692306
>> 8272306
>> Email: yd...@redhat.com
>> IRC : ydary
>>
>>
>> On Mon, Oct 5, 2015 at 4:31 AM, Punit Dambiwal  wrote:
>>
>>> Hi Michal,
>>>
>>> Right now I am using DWH and Ovirt reports...for the guest vm cpu and
>>> memory it's good and ok to use but for the network usages there is nothing
>>> even the guest vm usages is too high...that's why i want to use collectd to
>>> get the proper network usages graphs of guest VM's.
>>>
>>
>> Did you install the guest agent on the VM?
>> Maybe that is why you don't see the network data, since we do collect it.
>>
>>
>>>
>>> Thanks,
>>> Punit
>>>
>>> On Fri, Oct 2, 2015 at 7:03 PM, Michal Skrivanek <
>>> michal.skriva...@redhat.com> wrote:
>>>

 On 2 Oct 2015, at 11:17, Punit Dambiwal wrote:

 Hi All,

 I want to use collectd (https://collectd.org/) to collect the guest VM
 usages in to graphs...as ovirt DWH and reports are not quite good...i want
 more good graphs and reporting of the usages...

 Please suggest me good way or tool to achieve this…


 Hi Punit,
 well…maybe you can use the DWH database? If it has the data you need
 you and you only want better graphs then the reporting package just works
 on top of those data…so you can use a different one instead
 If you need different data then you need to get them in some other
 way….least intrusive might be periodic calls to REST API to get what you
 need…but be careful as REST API has a reputation of being quite slow….
 If you need something faster you would need to move your data gathering
 closer to the source, either directly from DB or directly form hypervisors.
 Obviously the closer you try to get the implementation is increasingly more
 difficult and trickier:)

 but if you're looking for host system performance data you would better
 do it over there…sysstat/sar or collectd…I would bypass oVirt's mechanisms
 and grab it myself, then perhaps correlate other data from REST API or DWH
 tables. e.g. correlating increased CPU/mem load on the host with the amount
 of VMs running on that host (well, that one you can do with oVirt's stats,
 depends if you need/want more low level stuff we don't have)

 HTH,
 michal


 Thanks,
 Punit


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>>>
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>>>
>>
>
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Re: [ovirt-users] CEPH rbd support in EL7 libvirt

[Sven Kieske]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1



On 12/10/15 10:13, Nux! wrote:
> Hi Nir,
> 
> I have not tried to use Ovirt with Ceph, my question was about
> libvirt and was directed to ask the question here, sorry for the
> noise; I understand libvirt is not really ovirt's people concern.
> 
> The thing is qemu can do ceph rbd in EL7, libvirt does not,
> although support seems to be there and a simple rebuild enables
> it. Was hoping you guys know more.
> 
> Lucian

I'd suggest to ask this on the virt-sig of centOS (cc'ed).

Why is there no rbd support in el7 libvirt? I don't know, maybe the
virt repo guys from centos can rebuild it (they already do rebuild
libvirt afaik, another flag might not hurt them ).

HTH


- -- 
Mit freundlichen Grüßen / Regards

Sven Kieske

Systemadministrator
Mittwald CM Service GmbH & Co. KG
Königsberger Straße 6
32339 Espelkamp
T: +495772 293100
F: +495772 29
https://www.mittwald.de
Geschäftsführer: Robert Meyer
St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhaus
en
Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad
Oeynhausen
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Re: [ovirt-users] engine.log is looping with Volume XXX contains a apparently corrupt brick(s).

[Nico]

 

Le 2015-10-12 14:04, Nir Soffer a écrit : 

>> On Mon, Oct 12, 2015 at 11:14 AM, Nico  wrote:
> 
> Yes, engine will let you use such volume in 3.5 - this is a bug. In 3.6 you 
> will
> not be able to use such setup.
> 
> replica 2 fails in a very bad way when one brick is down; the
> application may get
> stale data, and this breaks sanlock. You will be get stuck with spm
> that cannot be
> stopped and other fun stuff.
> 
> You don't want to go in this direction, and we will not be able to support 
> that.

For the record, I already rebooted node1; and the node2 took over the
existing VM from node 1 and vice-versa. 

GlusterFS worked fine, oVirt application was still working fine .. i
guess it is because it was a soft reboot which stops softly the
services. 

I got another case where i stuck the network on the 2 nodes
simultaneously after a bad manipulation on oVirt GUI and i got a split
brain. 

i kept the error at this very moment: 

root@devnix-virt-master02 nets]# gluster volume heal ovirt info
split-brain
Brick devnix-virt-master01:/gluster/ovirt/
/d44ee4b0-8d36-467a-9610-c682a618b698/dom_md/ids
Number of entries in split-brain: 1 

Brick devnix-virt-master02:/gluster/ovirt/
/d44ee4b0-8d36-467a-9610-c682a618b698/dom_md/ids
Number of entries in split-brain: 1 

This file was having same size on both nodes; so it was hard to select
one. Finally i chose the younger one and all was back online after the
heal. 

It is this kind of stuff you are talking about with 2 nodes ? 

For now, I don't have budget to take a third one; so i'm a bit stuck and
disappointing. 

I've a third device but for backup, it has lot of storage but low cpu
abilities (no VT-X) so i can't use it as hypervisor. 

I could maybe use it as a third brick but is it possible to have this
kind of configuration ? 2 actives nodes as hypervisor and 1 third only
for gluster replica 3 ? 

Cheers 

Nico 

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[ovirt-users] ovirt repository in the foreman host provisionning process

[Nathanaël Blanchet]

Hello,

In the foreman host provisionning process, should the "yum localinstall 
http://resources.ovirt.org/pub/yum-repo/ovirt-release35.rpm; be 
automatically executed in the same way as it is in a traditional way? it 
seems that whithout those repos, vdsm installation fails, even if the 
host had been previously registered with katello to a local ovirt 
repository.

Could you please help me on that point?

--
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
blanc...@abes.fr

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[ovirt-users] It is possible to use vdsClient / virsh to start VMs in the event that engine is down?

[Liam Curtis]

Hello all,

I do not see a way to start vm's in the event that an engine is down. I see
vdsClient -s 0 destroy works to shut them down.

Also, is it still possible to use non-read-only virsh commands? i tried
using saslpasswd2 to create an account, but that did not seem to work.

Thanks!
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Re: [ovirt-users] vm cannot be started

[Zhong Qiang]

hi qinglong,
 This fixed the problem of  vm startup on my oVirt, you can try
this. visit the following URL:
   http://www.jianshu.com/p/95ae81d9864c

2015-09-25 10:08 GMT+08:00 qinglong.d...@horebdata.cn <
qinglong.d...@horebdata.cn>:

> Hi all,
> I have installed ovirt-hosted-engine-setup on one machine and it
> used iscsi shared storage on another machine. I created and sealed a
> windows xp template and then I created a vm based on the template. When the
> vm was started at the first time I attached the floppy to it and use
> sysprep to init it. Then I shutdown the vm, but after I shutdown it I
> cannot start it. Here are the logs:
>
> VM test is down with error. Exit message: internal error Process exited while 
> reading console log output: char device redirected to /dev/pts/1
>
> 2015-09-25T01:29:31.222028Z qemu-kvm: -drive 
> file=/var/run/vdsm/payload/6be72664-a80c-4d78-9a5b-f2bbe37c5b2e.4ebf24c33f6111e0dae20466f370de53.img,if=none,id=drive-fdc0-0-0,format=raw,serial=:
>  could not open disk image 
> /var/run/vdsm/payload/6be72664-a80c-4d78-9a5b-f2bbe37c5b2e.4ebf24c33f6111e0dae20466f370de53.img:
>  Permission denied.
> Anyone can help? Thanks!
> --
> Dolny
>
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[ovirt-users] oVirt - High Availability

[Indunil Jayasooriya]

Hi users,


I have setup OVIRT 3.5 with* 2 REDHAT 7.1 hosts.* Everything is ok other
than HA ( High Availability). To test HA, Documentation says, *Power
Management is needed. *

Could you pls let me know if this Power Management is a separate Device or
does it come with a BRANDED Server such as HP, IBM or Dell?

I have seen a* ILO* port in HP servers. Can I use it for HA ( High
Availability) in ovirt?

If *power management* is *present in  Branded Servers*, Could you  pls let
me know some *Branded  RHEL 7.1/CentOS 7.1 supported  servers?*

Then, I can use it for Production use.


*This is an YOU TUBE video for HA.*

https://www.youtube.com/watch?v=uHCnXGUMaS0

Is this a correct video for HA?


I did some research.

a few URLs.


http://lists.ovirt.org/pipermail/users/2013-January/011519.html

http://www.ovirt.org/OVirt_Administration_Guide#Host_Resilience

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.5/html/Administration_Guide/sect-Improving_Uptime_with_Virtual_Machine_High_Availability.html


*what is **Soft-Fencing Hosts ?* ovirt doc gives below . (
http://www.ovirt.org/OVirt_Administration_Guide#Host_Resilience )

Soft-Fencing Hosts

Sometimes a host becomes non-responsive due to an unexpected problem, and
though VDSM is unable to respond to requests, the virtual machines that
depend upon VDSM remain alive and accessible. In these situations,
restarting VDSM returns VDSM to a responsive state and resolves this issue.

oVirt 3.3 introduces "soft-fencing over SSH". Prior to oVirt 3.3,
non-responsive hosts were fenced only by external fencing devices. In oVirt
3.3, the fencing process has been expanded to include "SSH Soft Fencing", a
process whereby oVirt attempts to restart VDSM via SSH on non-responsive
hosts. If oVirt fails to restart VDSM via SSH, the responsibility for
fencing falls to the external fencing agent if an external fencing agent
has been configured.


*BUT, It does NOT say how to set it up? *

*is there any step by step doc for it? *


HOPE TO hear from you?








-- 
cat /etc/motd

Thank you
Indunil Jayasooriya
http://www.theravadanet.net/
http://www.siyabas.lk/sinhala_how_to_install.html   -  Download Sinhala
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