[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] add file: migration support (r2)
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] [PATCH] add file: migration support (r2) |
Date: |
Tue, 18 Nov 2008 03:04:37 +0000 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Paul Brook wrote:
> > I'm not sure if "live" migration to a file is really useful. "Dead"
> > migration is useful for suspending a VM to disk.
>
> Right. That's the point I was trying to make.
I thought of a use for live migration to and from a file. It's when
you have to restart a host while minimising downtime of all its
guests. The liveness reduces that downtime. That could be rebooting,
or simply replacing QEMU/KVM by a newer version. It would require a
lot of guest memory (collectively), to be worth it.
-- Jamie