Re: [Qemu-devel] [PATCH V7 0/8] add internal snapshot support at block device level

[Kevin Wolf]

Am 07.08.2013 um 05:00 hat Wenchao Xia geschrieben:
>   This series brings internal snapshot support at block devices level, now we
> have two three methods to do block snapshot lively: 1) backing chain,
> 2) internal one and 3) drive-back up approach.
> 
> Comparation:
>              Advantages:                            Disadvantages:
> 1)    delta data, taken fast, export, size        performance, delete slow.
> 2)  taken fast, delete fast, performance, size       delta data, format
> 3)      performance, export, format      taken slow, delta data, size, host 
> I/O
> 
>   I think in most case, saving vmstate in an standalone file is better than
> saving it inside qcow2, So suggest treat internal snapshot as block level
> methods and not encourage user to savevm in qcow2 any more.

Looks good and should be mergable after a rebase.

Kevin