Re: [Qemu-devel] [PATCH] migration: adding migration to/from a file

[Paul Brook]

On Monday 19 January 2009, Uri Lublin wrote:
> Migration to file, reuses migration-to-fd.
> Migration from file, uses qemu-fopen directly.
>
> The saved state-file should be used only once and removed (or used
> with -snapshot, or a the disk-image should be copied), as the
> disk image is not saved, only the VM state.
>
> Also there is not point of doing a _live_ migration to file (except
> for debugging migration code), so I recommend to stop the VM before
> migrating its state to a file.
>
> An advantage migration-to-file over savevm/loadvm is that for the latter
> a qcow2 is a requirement, while the former works for any image-format.

Wouldn't it be better to just implement savevm to file?

Paul