Re: Questions about how block devices use snapshots

[Zhiyong Ye]

Hi Kevin,

Thank you for your patience and explanations. I learned a lot from our 
discussions and thank you again for your help.

Regards

Zhiyong

On 1/12/23 7:47 PM, Kevin Wolf wrote:
> Am 11.01.2023 um 17:21 hat Zhiyong Ye geschrieben:
> > Hi Kevin,
> >
> > Can I ask again how base.img + diff.qcow2 can be re-merged into one image
> > via qemu-img or hmp command when modified.img is discarded?
>
> You can either use 'qemu-img commit' to copy all of the data from
> diff.qcow2 back into base.img (this is probably what you want), or
> 'qemu-img rebase' to copy all of the data from base.img into diff.qcow2.
>
> Kevin