[ovirt-users] LVM2 Thinprovisioned

[Fernando Frediani]

Really ? That's pretty bad and another downside unfortunately.

The fact that the only option for block storage is LVM (so there is not 
suitable Clustered Filesystem to run QCOW2 files) and now that LVM2 
Thinprovisioned is not supported can be a real issue where 
Thinprovisioned LUNs are not available in the Storage Controller.

Have these topics ever came up in the feature/product management 
meetings are any of them something being considered ?
The same way CPU and Memory overprovision are key features in order to 
justify the overall solution cost Storage Thinprovision equally 
necessary otherwise the Storage stuff end up costing more than half of 
whole platform solution.

Thanks for the answer anyway. Hopefully at least LVM2 Thinprovisioning 
comes up anytime soon.

Fernando


Em 11/08/2016 12:54, Nir Soffer escreveu:
> On Tue, Aug 9, 2016 at 3:16 PM, Fernando Frediani
> <fernando.frediani at upx.com.br> wrote:
>> Hello all.
>>
>> When you use oVirt with a Block Storage the only option available to store
>> de VMs is LVM.
>>
>> Does LVM in oVirt use Thinprovisoned (supported in LVM2) instead of having
>> to use the SAN Thinprovisioned features ?
> No, we use regular lvs. thin pool are not supported in a cluster.
>
> Using thin provisioned LUN for ovirt storage domain is the best option
> (supported
> since 4.0). We discard removed lvs, so you get back the storage on the storage
> server and can use it for other thin provisioned LUNs.
>
> Nir