[sheepdog] snapshot rollback ?

[Alexandre DERUMIER]

>>The way you tried is correct, but I've never seen such results... 

Just to be sure, I can make snapshot when the vm is online ?

>>What are the revisions of your qemu and sheepdog? 

qemu-kvm 1.2 rc1 and sheepdog 0.4.

I'll retry today with qemu-kvm 1.1 stable, and also sheepdog 0.4 and sheepdog git.


----- Mail original ----- 

De: "MORITA Kazutaka" <morita.kazutaka at lab.ntt.co.jp> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: "MORITA Kazutaka" <morita.kazutaka at lab.ntt.co.jp>, sheepdog at lists.wpkg.org 
Envoyé: Dimanche 26 Août 2012 12:56:43 
Objet: Re: [sheepdog] snapshot rollback ? 

At Sun, 26 Aug 2012 11:17:05 +0200 (CEST), 
Alexandre DERUMIER wrote: 
> 
> Hi, 
> Sorry to disturb you again, 
> But I really don't understand how it's works. 
> 
> #collie vdi create image1 1G 
> start qemu with file=sheepdog:image1 
> #collie vdi tree 
> image---(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 
> vm-115-disk-1---[2012-08-26 10:38]---(you are here) 
> 
> content of image1: 
> #touch aftersnap1 
> #ls -l 
> /beforesnap1 
> /aftersnap1 
> 
> Now, I stop the qemu guest. 
> and start it with file=sheepdog:image1:snap1 
> #collie vdi tree 
> image1---[2012-08-26 10:38]---(you are here) 
> #ls -l 
> /aftersnap1 
> 
> ????????? 
> 
> I expected to have 
> 
> ls -l 
> /beforesnap1 
> 
> I's like I see only datas writen after snap1 
> 
> So how can I rollback to time when snap1 was taken ? 

The way you tried is correct, but I've never seen such results... 
What are the revisions of your qemu and sheepdog? 

Thanks, 

Kazutaka 



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Alexandre D e rumier 

Ingénieur Systèmes et Réseaux 


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