qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] Re: Live migration protocol, device features, ABIs and othe


From: Paul Brook
Subject: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts
Date: Tue, 24 Nov 2009 13:59:49 +0000
User-agent: KMail/1.12.2 (Linux/2.6.30-2-amd64; KDE/4.3.2; x86_64; ; )

> > Reading in old state files is a whole lot easier (to write
> > maintain, and stay sane) than producing state that is bug-compatible with
> > previous versions.
> 
> It seems to me that old->new and new->old migrations are
> of about the same level of difficulty.
> Supporting one of these but not the other is of course
> easier than supporting both, but I don't see where
> "a whole lot" comes from.

Migrating from old version requires the restore routine be version aware. 
Migrating to old versions requires the the save routine also be version aware, 
which I'd expect to be about double the amount of work.

Paul




reply via email to

[Prev in Thread] Current Thread [Next in Thread]