[ovirt-users] VMs HA with cinder volumes

[Matteo Dacrema]

Ok, it works.

Thank you very much Nir.

Matteo



> Il giorno 21 feb 2017, alle ore 18:26, Nir Soffer <nsoffer at redhat.com> ha scritto:
> 
> On Tue, Feb 21, 2017 at 3:20 PM, Matteo Dacrema <mdacrema at 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
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
> 
> --
> Questo messaggio e' stato analizzato con Libra ESVA ed e' risultato non infetto.
> Seguire il link qui sotto per segnalarlo come spam: 
> http://mx01.enter.it/cgi-bin/learn-msg.cgi?id=D2CE14011D.A4808
> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20170223/915d888e/attachment.html>