Replication with QCOW2 files

[Lucian]

Hello,

Are there any plans to support VM replication where QCOW2 files are used?

The reliance of this feature on ZFS-only storage makes things quite complicated and hacky for us. Is there anything we users can do etc?

Regards

 

[wolfgang]

Hi

Are there any plans to support VM replication where QCOW2 files are used?

There are no plans for this feature.

 

[Lucian]

Understood. Do you know how long the wait for having replication for thin/lvm?

 

[LnxBil]

Understood. Do you know how long the wait for having replication for thin/lvm?

Same as for qcow2 ... if nobody is working on it upstream, it'll not going to be in PVE. ZFS was very easy to integrate, because it is already present in the filesystem, no other filesystem or storage technology available in PVE (besides btrfs) does this. LVM uses a non-VM friendly snapshot method, so it cannot be used to transfer incremental changes - neither does qcow2.

However, there are technologies in development in QEMU that will work with any underlying storage (e.g. COLO), but it currently neither finished nor stable and therefore not integrated in PVE.

 

[Lucian]

Thanks.
So, in short, use ZFS if you want to use the replication feature.

 

[LnxBil]

So, in short, use ZFS if you want to use the replication feature.

Until there is a QEMU-based implementation, ZFS is mandatory, yes.