[pve-devel] Low downtime alternative for container migration

[Teemu Grönqvist]

Yes, been reading through pve-container and pve-storage projects. As I 
am not familiar with Proxmox's code that much yet, I'd like to ask 
whether my plans sound reasonable or not:

- Create snapshot of the volume in PVE::LXC::Migrate::prepare named 
__migration__
- Migrate the snapshot as the disk of the container using 
PVE::Storage::storage_migrate in PVE::LXC::Migrate::phase1 (standard dd 
migration, but use the snapshot as the source instead of the original disk)
- Remove the snapshot
- Shutdown the container (normal migration shuts the container down in 
prepare, but we should wait until phase1 storage migration)
- Rsync the changes in PVE::LXC::Migrate::phase1
- Continue normally with the migration

How does this flow sound? I'd rather not touch pve-storage and keep the 
changes in pve-container.

Kind regards,
Teemu Grönqvist
Net9 Oy


On 04/06/2017 21:57, Dietmar Maurer wrote:
>> Would you be interested in such feature? I could work on a patch as I
>> myself have a lot of interest for this.
> yes.
>
> I assume you already read https://pve.proxmox.com/wiki/Developer_Documentation
>