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

[dmc <dmc@filteredperception.org>]

andrzej zaborowski wrote:
> 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.

Excellent!

Those little tidbits in the documentation ( -b flag for qemu-img create 
) had completely gone under my radar.  That definitely gets me 
everything I want.

Thanks,

-dmc