[PVE-User] offline VM migration node1->node2 with local storage

Aaron Lauterer a.lauterer at proxmox.com
Mon Feb 17 09:26:48 CET 2020



On 2/16/20 11:28 AM, Roland @web.de wrote:
> hello,
> 
> why do i need to have the same local storage name when migrating a vm
> from node1 to node2 in dual-node cluster with local disks ?
> 
> i'm curious that migration is possible in online state (which is much
> more complex/challenging task) without a problem, but offline i get
> "storage is not available on selected target" (because there are
> differenz zfs pools on both machines)

This is because offline and online migration use two very different 
mechanism.
AFAIK Qemu NBD is used for online migration and ZFS send->recv is used 
for offline migration.

> 
> i guess there is no real technical hurdle, it just needs to get
> implemented appropriatley !?

There is a patch in the works to make different target storages possible 
for offline migration.

> 
> regards
> roland
> 
> 
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