[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Adding Save States menu items
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] Adding Save States menu items |
Date: |
Thu, 6 Oct 2016 13:47:52 -0700 |
On 6 October 2016 at 12:59, Eric Blake <address@hidden> wrote:
> Libvirt also learned that the qemu 'migrate-to-disk' format (used by
> 'savevm' or 'migrate') is NOT self-descriptive - in order to fully and
> safely revert to an earlier state, you HAVE to store the command line
> (or a way to regenerate the command line) that was associated with the
> qemu whose state you saved, along with tracking all hotplugs. Since a
> mere 'savevm' REQUIRES external information to safely be restored, you
> would have to figure out a way to store this additional information
> alongside whatever save files you plan on creating (and please don't
> change the qcow2 file format to become a dumping grounds for this
> additional information).
Good point. I think this is a fairly strong argument for
keeping the "user friendly" interface to snapshots in the
VM management layer, not QEMU itself.
thanks
-- PMM
Re: [Qemu-devel] Adding Save States menu items, Eric Blake, 2016/10/06
Re: [Qemu-devel] Adding Save States menu items,
Peter Maydell <=
Re: [Qemu-devel] Adding Save States menu items, Kevin Wolf, 2016/10/07
Re: [Qemu-devel] Adding Save States menu items, Daniel P. Berrange, 2016/10/07