Re: [Xen-devel] [RFC V9 3/4] domain snapshot design: xl

["Chun Yan Liu" <cyliu@xxxxxxxx>]

>>> On 12/19/2014 at 06:27 PM, in message 
>>> <1418984856.20028.17.camel@xxxxxxxxxx>,
Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote: 
> On Fri, 2014-12-19 at 00:03 -0700, Chun Yan Liu wrote: 
>  
> > '--name' meant to give a meaningful name (like: newinstall. Used as the 
> > memory snapshot name and disk snapshot name). 
>  
> Where is this name stored and when and where would it be presented to 
> the user?
e.g. For qcow2 internal disk snapshot, this name is stored within the disk.
When user wants to delete internal disk snapshot, it will be:
#qemu-img snapshot -d name disk

>  
> > That's good. Then we need to add some description to tell users about 
> > the auto-generated domain snapshot name, disk snapshot name, 
> > memory state file and external disk snapshot files, etc. 
>  
> We will need user docs and manpage updates, yes. 
>  
> > > > #e.g. to specify exernal disk snapshot, like this:  
> > > > #disks=['/tmp/hda_snapshot.qcow2,qcow2,hda',  
> > > >         '/tmp/hdb_snapshot.qcow2,qcow2,hdb',]  
> > > >   
> > > > #e.g. to specify internal disk snapshot, like this:  
> > > > disks=[',,hda',',,hdb',]  
> > >   
> > > Ideally one or the other of these behaviours would be possible without  
> > > needing to be quite so explicit. 
> >  
> > OK, I'll delete one. 
>  
> I don't object to having this more capable syntax as an option, so the 
> user can override things if they wish, all I was suggesting is that the 
> default ought to be something useful so the user doesn't need to say 
> anything if they just want the toolstack to "do something sensible". 

I see. By default user doesn't need to specify 'disks' at all, then xl
will do internal disk snapshot to each domain disk.

>  
> Ian. 
>  
>  
>  



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