Re: [Qemu-devel] RFE- snapshot data storage location configurable

["andrzej zaborowski" <balrogg@gmail.com>]

On 01/08/07, dmc <dmc@filteredperception.org> wrote:
> I have a pretty ugly patch against qemu 0.8 which allows the location of data
> used with the -snapshot feature to be somewhere other than /var/tmp.  I have a
> use-case where I am creating many gigabytes of changes to disk in snapshot mode.
>   When 0.9 came out, I looked, but it seemed less than trivial to update my
> patch, which was a pretty ugly hack to begin with.
>
> I don't suppose anybody else thinks this would be a useful feature?  Or at least
> someone who can rattle off the top of their heads the sorts of things I should
> keep in mind while trying to put it together myself?
>
> A further extension, which I would like, but is also more complex to add, would
> be the ability to specify -snapshot, _per device_.

I also thought that would be useful earlier but now qcow2 overlays
provide much better flexibility and don't litter the commandline
syntax. I think the currently available choice between -snapshot (for
the simplest possible use case) and qcow2 overlays (for anything more
complex) is a perfect balance for usability and there's no need to add
more switches.

Regards,
Andrzej (away until mid-September(?))