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From Laszlo Hornyak <laszlo.horn...@gmail.com>
Subject Re: KVM - VM snapshot (round 2)
Date Mon, 08 Dec 2014 20:58:49 GMT
It is still doing the same, I suspect that this is an intentional behavior
of qemu, it keeps the disk space for future use. However I haven't found
any documentation on how users should free the space.



On Mon, Dec 8, 2014 at 12:32 PM, Wei ZHOU <ustcweizhou@gmail.com> wrote:

> As far as I know, KVM does support memory snapshot.
> The shortcoming is libvirt-java supports only internal snapshot (not
> external snapshots) for now.
> In this case, the memory snapshot will be attached to the qcow2 file, and
> the qcow2 will grow even after we remove the memory snapshot.
>
> I've changed and tested on 4.2 before, but not pushed into production.
>
> An email from the Mice, the developer of this functionality:
> http://cloudstack.markmail.org/message/c3hkpxbad6ul4mza
>
> -Wei
>
> 2014-12-08 12:11 GMT+01:00 Vadim Kimlaychuk <Vadim.Kimlaychuk@elion.ee>:
>
> > CS does not support memory snapshots for XenServer. Disk snapshots are
> > working. Not sure about VmWare, but I guess it should be the same. I
> > thought the reachest feature-set is developed for KVM. But if it does not
> > support memory snapshots - I wonder wich hypervisor does it ? This option
> > at user interface exists, but I didn't see it worked.
> >
> > Vadim.
> >
> >
> > -----Original Message-----
> > From: Andrija Panic [mailto:andrija.panic@gmail.com]
> > Sent: Monday, December 08, 2014 12:51 PM
> > To: dev@cloudstack.apache.org; users@cloudstack.apache.org
> > Subject: KVM - VM snapshot (round 2)
> >
> > Hi guys,
> >
> > still wondering is there any interest into imlementing the VM snapshoot
> > for KVM ?
> >
> > We desperately need it, so will try to contribute anyway we can (not me
> > obviosuly, not a developer, but my colegues will).
> >
> > Can you give some guidance on this subject - I'm aware of the design
> > documents here
> > https://cwiki.apache.org/confluence/display/CLOUDSTACK/VM+Snapshots but
> > any more input would be very much appriciated.
> >
> > I understand, that VMware/Xen natively support this, and that it might
> > have bigger user-base for Xen VS KVM - but this is one of the major KVM
> > missing features...
> >
> > Any input greatly appreciated...
> >
> > --
> >
> > Andrija Panić
> >
>



-- 

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