[sheepdog] snapshot rollback ?

[MORITA Kazutaka]

At Mon, 27 Aug 2012 09:24:57 +0200 (CEST),
Alexandre DERUMIER wrote:
> 
> Ok, I have upgrade to last sheepdog git,seem to work better but
> 
> now:
> 
> #collie vdi create image1 1G 
> start qemu with file=sheepdog:image1 
> #collie vdi tree 
> image1---(you are here) 
>  
> content of image1: 
> #touch beforesnap1 / 
> #ls -l 
> /beforesnap1 
> 
> now I take a snapshot snap1: 
> #collie vdi snapshot -s snap1 image 
> #collie vdi tree 
> image1---[2012-08-27 09:07]---(you are here)

Are you trying to take a snapshot of a running VM?  Unfortunately, the
only way to take live snapshots is a 'savevm' command from qemu
monitor now.

To support live snapshots from collie or qemu-img commands, we need to
modify sheepdog block driver code so that it reloads a vdi object
after a snapshot is taken.

Thanks,

Kazutaka