Re: [ovirt-users] Ceph Cinder QoS

2018-03-14 Thread Matteo Dacrema
Hi all,

has someone experienced the same problem?
Is there someone who have a working cinder qos?

Thank you
Matteo

> Il giorno 25 gen 2018, alle ore 11:36, Matteo Dacrema <mdacr...@enter.eu> ha 
> scritto:
> 
> Hi All,
> 
> I’m running a 4.2 cluster with all VMs on Ceph using cinder external provider.
> 
> I’m trying to limit IOPS with cinder qos and volume type but it doesn’t work.
> VM xml doesn’t show anything about  
> 
> Is it expected to work or is not implemented yet?
> 
> Thank you
> 
> Matteo
> 
> 
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[ovirt-users] Ceph Cinder QoS

2018-01-25 Thread Matteo Dacrema
Hi All,

I’m running a 4.2 cluster with all VMs on Ceph using cinder external provider.

I’m trying to limit IOPS with cinder qos and volume type but it doesn’t work.
VM xml doesn’t show anything about  

Is it expected to work or is not implemented yet?

Thank you

Matteo


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[ovirt-users] RBD cache

2017-10-16 Thread Matteo Dacrema
Hi all,

I’m using oVirt 4.1 with Ceph backed VMs.

I’m trying to understand how to configure rbd cache on the nodes.
During VM boot up libvirt search for a files under  /etc/ceph/ceph.conf. After 
placing file in that directory with correct cache parameters the warning 
disappears but cache isn’t enabled yet.

Does anyone has some hint?
Thank you
Regards

Matteo

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Re: [ovirt-users] VMs HA with cinder volumes

2017-02-23 Thread Matteo Dacrema
Ok, it works.

Thank you very much Nir.

Matteo



> Il giorno 21 feb 2017, alle ore 18:26, Nir Soffer <nsof...@redhat.com> ha 
> scritto:
> 
> On Tue, Feb 21, 2017 at 3:20 PM, Matteo Dacrema <mdacr...@enter.eu> wrote:
>> Hi Nir,
>> 
>> thank you.
>> So, can I use a Ceph backed VM with a lease on gluster?
> 
> Should work.
> 
>> Also if I detach network from the node hosting the VMs it will not migrated
>> to another host.
> 
> If you have a lease, detaching the network used to access the leases will
> cause sanlock to terminate the vm and expire the lease. In this case the
> system should start the vm on another host.
> 
> Note that if you have multiple networks, and the network used by the vm
> disks is different from the network used to access the leases, all this may
> not work in a useful way.
> 
> Either the leases will not be accessible while the vm disks are accessible,
> leading to killing a good working vm, or the vm disk are not accessible,
> pausing the vm, but since the leases are still accessible, the vm will not
> release the lease and the system will not be able to start the vm elsewhere.
> 
> Maybe you can expose some of the ceph storage using cephfs for the leases?
> This will make it more likely that the leases storage domain will fail
> when there
> is some issue with your ceph cluster.
> 
> Another option is to expose ceph block device using iscsi, and use this iscsi
> storage domain for the leases. But note that this makes your iscsi gateway
> host a single point on failure.
> 
> Nir
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Re: [ovirt-users] VMs HA with cinder volumes

2017-02-21 Thread Matteo Dacrema
Hi Nir,

thank you.
So, can I use a Ceph backed VM with a lease on gluster?

Also if I detach network from the node hosting the VMs it will not migrated to 
another host.


Regards
Matteo



> Il giorno 20 feb 2017, alle ore 21:58, Nir Soffer <nsof...@redhat.com> ha 
> scritto:
> 
> On Mon, Feb 20, 2017 at 12:54 PM, Matteo Dacrema <mdacr...@enter.eu 
> <mailto:mdacr...@enter.eu>> wrote:
> Hi all,
> 
> I’ve a setup that uses Ceph through ovirt for VM storage.
> I tested out VM HA and all works well when IPMI is reachable.
> When it’s not reachable because of network or power failure VM states switch 
> to unknown and it’s not restarted to other nodes.
> 
> Is it a specific setup that I’ve missed?
> 
> Hi Matteo,
> 
> When power management is not available, we cannot do failover to other host.
> 
> In 4.1 you can use a VM lease for your HA VM, enabling failover without power
> management.
> 
> Note that the lease cannot be on Ceph storage domain, you will have to add
> other type of storage for the leases, since we don't support leases on ceph 
> yet.
> 
> Please check the vm-leases feature page for more info:
> https://www.ovirt.org/develop/release-management/features/storage/vm-leases/ 
> <https://www.ovirt.org/develop/release-management/features/storage/vm-leases/>
> 
> Nir
>  
> 
> Thank you
> Regards
> Matteo
> 
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[ovirt-users] VMs HA with cinder volumes

2017-02-20 Thread Matteo Dacrema
Hi all,

I’ve a setup that uses Ceph through ovirt for VM storage.
I tested out VM HA and all works well when IPMI is reachable.
When it’s not reachable because of network or power failure VM states switch to 
unknown and it’s not restarted to other nodes.

Is it a specific setup that I’ve missed?

Thank you
Regards
Matteo

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[ovirt-users] VMs HA with ceph and cinder

2017-02-20 Thread Matteo Dacrema
Hi all,

I’ve a setup that uses Ceph through ovirt for VM storage.
I tested out VM HA and all works well when IPMI is reachable.
When it’s not reachable because of network or power failure VM states switch to 
unknown and it’s not restarted to other nodes.

Is it a specific setup that I’ve missed?

Thank you
Regards
Matteo
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Re: [ovirt-users] 4.0.5 create vm from template on cinder/ceph backed storage

2016-11-27 Thread Matteo Dacrema
Hi all,


same problem here.
I see the same error in the logs.

Matteo


> Il giorno 25 nov 2016, alle ore 15:27, Nir Soffer  ha 
> scritto:
> 
> On Thu, Nov 24, 2016 at 11:03 PM, Jordan Conway
>  wrote:
>> I've got a problem where since upgrading to 4.0.5 I am still unable to
>> create a vm from a template.
>> The issue now is that it seems to be stuck in a loop trying to and failing
>> to create the vm, which is making my logs explode with the following
>> 
>> https://paste.fedoraproject.org/489161/14799981/
>> 
>> And in the engine UI "Failed to complete VM fromtemplate-1 creation."
>> thousands of times.
>> 
>> The issue started I believe with this sql error
>> 
>> https://paste.fedoraproject.org/489183/00010131/
>> 
>> Any insight on how I can stop the persistent error would be appreciated, as
>> it is also preventng me from running engine-setup due to running jobs, even
>> though vdsclient shows nothing.
>> 
>> vdsClient -s 0 getAllTasksStatuses
>> {'status': {'message': 'OK', 'code': 0}, 'allTasksStatus': {}}
> 
> Vdsm is not in the loop when using cinder/ceph storage, engine
> is creating volumes in ceph via cinder, not via vdsm.
> 
> Can you file a engine bug about this?
> https://bugzilla.redhat.com/enter_bug.cgi?product=ovirt-engine
> 
> Nir
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