[ovirt-users] Local and remote storage?

[Itamar Heim]

On 02/20/2015 09:30 AM, Simone Tiraboschi wrote:
>
>
> ----- Original Message -----
>> From: "Pat Riehecky" <riehecky at fnal.gov>
>> To: users at ovirt.org
>> Sent: Thursday, February 19, 2015 3:14:08 PM
>> Subject: [ovirt-users] Local and remote storage?
>>
>> Hello,
>>
>> I've run into an "odd" problem with oVirt 3.5.1.
>>
>> I've two sets of VMs:
>> A) some fairly critical VMs which need HA and have access to shared storage
>> B) some less important systems which can be reconstructed in the event
>> of a disaster
>>
>> My plan was to use the slack disk on my oVirt nodes to host the 'B'
>> systems while still allowing the 'A' systems to run there.  This seems
>> to not be allowed[1].
>>
>> Is there a way I can utilize both the spare disk on my compute nodes and
>> have HA configured for some VMs with shared storage?
>
> Currently indeed each datacenter must be configured as a shared or local storage one, no mix for the same datacenter.
>
> For the next release (ovirt 3.6) we are going to have oVirt and GlusterFS hyper converged: you'll can use each host both for virtualization pourposes and for storages ones sharing the local spare disks into a shared GlusterFS volume to be used by oVirt hosts.
> So you can also have HA capabilities and so on for the VM stored on the host disks shared in a GlusterFS volume; at the same time you could still use you state-of-the art SAN for critical VMs.
>
> Here you can find some info an this architecture:
> http://www.ovirt.org/images/6/6c/2015-ovirt-glusterfs-hyperconvergence.pdf
>
> Than we are also going to have self-hosted engine over GlusterFS.
>
>> Pat
>>
>> [1] http://www.ovirt.org/OVirt_Administration_Guide#Preparing_Local_Storage

also in 3.6 we are working on removing the hopefully last obstacle to 
allow mixed local/shared (which will require work to allow that, post 3.6)