Migrate from RHV to ProxMox Question

[dhcolesj]

We use RAW format in RHV. (KVM based).
my question is would "qemu-img dd" work faster (or at all) than "qemu-img convert" and has anyone done such a migration?

I've seen where you can import raw format disk images into ProxMox instead of Qcow2, and was hoping just exporting the disk as raw and importing it natively would be faster (especially since we have some with large disks).

 

[bbgeek17]

Hi @dhcolesj,

If you have a disk file in RAW format and plan to keep it as a file, you can simply place it in the intended location, name it appropriately, and then use qm disk scan to bring it into the VM configuration.

If you plan to change the underlying storage type - for example, moving from a file to an LVM slice - you can use either dd or qemu-img convert/import to transfer the data accordingly.

Hope this helps!

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[dhcolesj]

So, to keep it as raw just run a cp command from the RHV hypervisor and place it where the Hypervisor can see it?

I may have to try that.

 

[dhcolesj]

Well, as it turns out the cp command doesn't work when exporting from RHV. the qemu-img convert -O raw command works flawlessly as seen on the ProxMox side. Not sure why it wouldn't since the format didn't change, but it did. I haven't tested using qemu-img dd yet.